Merge pull request #794 from junegunn/devel

0.16.0

.github/ISSUE_TEMPLATE.md

@@ -11,6 +11,7 @@
     - [ ] Linux
     - [ ] Mac OS X
     - [ ] Windows
+    - [ ] Windows Subsystem for Linux
     - [ ] Etc.
 - Shell
     - [ ] bash

.travis.yml

@@ -1,6 +1,10 @@
 language: ruby
-rvm:
-- 2.2.0
+matrix:
+  include:
+    - env: TAGS=
+      rvm: 2.3.3
+#   - env: TAGS=tcell
+#     rvm: 2.2.0
 
 install:
 - sudo apt-get update

BUILD.md

@@ -0,0 +1,106 @@
+Building fzf
+============
+
+Build instructions
+------------------
+
+### Prerequisites
+
+- `go` executable in $PATH
+
+### Using Makefile
+
+Makefile will set up and use its own `$GOPATH` under the project root.
+
+```sh
+# Source files are located in src directory
+cd src
+
+# Build fzf binary for your platform in src/fzf
+make
+
+# Build fzf binary and copy it to bin directory
+make install
+
+# Build 32-bit and 64-bit executables and tarballs
+make release
+
+# Build executables and tarballs for Linux using Docker
+make linux
+```
+
+### Using `go get`
+
+Alternatively, you can build fzf directly with `go get` command without
+cloning the repository.
+
+```sh
+go get -u github.com/junegunn/fzf/src/fzf
+```
+
+Build options
+-------------
+
+### With ncurses 6
+
+The official binaries of fzf are built with ncurses 5 because it's widely
+supported by different platforms. However ncurses 5 is old and has a number of
+limitations.
+
+1. Does not support more than 256 color pairs (See [357][357])
+2. Does not support italics
+3. Does not support 24-bit color
+
+[357]: https://github.com/junegunn/fzf/issues/357
+
+But you can manually build fzf with ncurses 6 to overcome some of these
+limitations. ncurses 6 supports up to 32767 color pairs (1), and supports
+italics (2). To build fzf with ncurses 6, you have to install it first. On
+macOS, you can use Homebrew to install it.
+
+```sh
+brew install homebrew/dupes/ncurses
+LDFLAGS="-L/usr/local/opt/ncurses/lib" make install
+```
+
+### With tcell
+
+[tcell][tcell] is a portable alternative to ncurses and we currently use it to
+build Windows binaries. tcell has many benefits but most importantly, it
+supports 24-bit colors. To build fzf with tcell:
+
+```sh
+TAGS=tcell make install
+```
+
+However, note that tcell has its own issues.
+
+- Poor rendering performance compared to ncurses
+- Does not support bracketed-paste mode
+- Does not support italics unlike ncurses 6
+- Some wide characters are not correctly displayed
+
+Third-party libraries used
+--------------------------
+
+- [ncurses][ncurses]
+- [mattn/go-runewidth](https://github.com/mattn/go-runewidth)
+    - Licensed under [MIT](http://mattn.mit-license.org)
+- [mattn/go-shellwords](https://github.com/mattn/go-shellwords)
+    - Licensed under [MIT](http://mattn.mit-license.org)
+- [mattn/go-isatty](https://github.com/mattn/go-isatty)
+    - Licensed under [MIT](http://mattn.mit-license.org)
+- [tcell](https://github.com/gdamore/tcell)
+    - Licensed under [Apache License 2.0](https://github.com/gdamore/tcell/blob/master/LICENSE)
+
+License
+-------
+
+[MIT](LICENSE)
+
+[install]: https://github.com/junegunn/fzf#installation
+[go]:      https://golang.org/
+[gil]:     http://en.wikipedia.org/wiki/Global_Interpreter_Lock
+[ncurses]: https://www.gnu.org/software/ncurses/
+[req]:     http://golang.org/doc/install
+[tcell]:   https://github.com/gdamore/tcell

CHANGELOG.md

@@ -1,6 +1,102 @@
 CHANGELOG
 =========
 
+0.16.0
+------
+- *Added `--height HEIGHT[%]` option*
+    - fzf can now display finder without occupying the full screen
+- Preview window will truncate long lines by default. Line wrap can be enabled
+  by `:wrap` flag in `--preview-window`.
+- Latin script letters will be normalized before matching so that it's easier
+  to match against accented letters. e.g. `sodanco` can match `Só Danço Samba`.
+    - Normalization can be disabled via `--literal`
+- Added `--filepath-word` to make word-wise movements/actions (`alt-b`,
+  `alt-f`, `alt-bs`, `alt-d`) respect path separators
+
+0.15.9
+------
+- Fixed rendering glitches introduced in 0.15.8
+- The default escape delay is reduced to 50ms and is configurable via
+  `$ESCDELAY`
+- Scroll indicator at the top-right corner of the preview window is always
+  displayed when there's overflow
+- Can now be built with ncurses 6 or tcell to support extra features
+    - *ncurses 6*
+        - Supports more than 256 color pairs
+        - Supports italics
+    - *tcell*
+        - 24-bit color support
+    - See https://github.com/junegunn/fzf/blob/master/BUILD.md
+
+0.15.8
+------
+- Updated ANSI processor to handle more VT-100 escape sequences
+- Added `--no-bold` (and `--bold`) option
+- Improved escape sequence processing for WSL
+- Added support for `alt-[0-9]`, `f11`, and `f12` for `--bind` and `--expect`
+
+0.15.7
+------
+- Fixed panic when color is disabled and header lines contain ANSI colors
+
+0.15.6
+------
+- Windows binaries! (@kelleyma49)
+- Fixed the bug where header lines are cleared when preview window is toggled
+- Fixed not to display ^N and ^O on screen
+- Fixed cursor keys (or any key sequence that starts with ESC) on WSL by
+  making fzf wait for additional keystrokes after ESC for up to 100ms
+
+0.15.5
+------
+- Setting foreground color will no longer set background color to black
+    - e.g. `fzf --color fg:153`
+- `--tiebreak=end` will consider relative position instead of absolute distance
+- Updated `fzf#wrap` function to respect `g:fzf_colors`
+
+0.15.4
+------
+- Added support for range expression in preview and execute action
+    - e.g. `ls -l | fzf --preview="echo user={3} when={-4..-2}; cat {-1}" --header-lines=1`
+    - `{q}` will be replaced to the single-quoted string of the current query
+- Fixed to properly handle unicode whitespace characters
+- Display scroll indicator in preview window
+- Inverse search term will use exact matcher by default
+    - This is a breaking change, but I believe it makes much more sense. It is
+      almost impossible to predict which entries will be filtered out due to
+      a fuzzy inverse term. You can still perform inverse-fuzzy-match by
+      prepending `!'` to the term.
+
+0.15.3
+------
+- Added support for more ANSI attributes: dim, underline, blink, and reverse
+- Fixed race condition in `toggle-preview`
+
+0.15.2
+------
+- Preview window is now scrollable
+    - With mouse scroll or with bindable actions
+        - `preview-up`
+        - `preview-down`
+        - `preview-page-up`
+        - `preview-page-down`
+- Updated ANSI processor to support high intensity colors and ignore
+  some VT100-related escape sequences
+
+0.15.1
+------
+- Fixed panic when the pattern occurs after 2^15-th column
+- Fixed rendering delay when displaying extremely long lines
+
+0.15.0
+------
+- Improved fuzzy search algorithm
+    - Added `--algo=[v1|v2]` option so one can still choose the old algorithm
+      which values the search performance over the quality of the result
+- Advanced scoring criteria
+- `--read0` to read input delimited by ASCII NUL character
+- `--print0` to print output delimited by ASCII NUL character
+
 0.13.5
 ------
 - Memory and performance optimization

README.md

@@ -10,18 +10,15 @@ Pros
 
 - No dependencies
 - Blazingly fast
-    - e.g. `locate / | fzf`
-- Flexible layout
-    - Runs in fullscreen or in horizontal/vertical split using tmux
 - The most comprehensive feature set
-    - Try `fzf --help` and be surprised
+- Flexible layout using tmux panes
 - Batteries included
     - Vim/Neovim plugin, key bindings and fuzzy auto-completion
 
 Installation
 ------------
 
-fzf project consists of the following:
+fzf project consists of the following components:
 
 - `fzf` executable
 - `fzf-tmux` script for launching fzf in a tmux pane
@@ -30,12 +27,12 @@ fzf project consists of the following:
     - Fuzzy auto-completion (bash, zsh)
 - Vim/Neovim plugin
 
-You can [download fzf executable][bin] alone, but it's recommended that you
-install the extra stuff using the attached install script.
+You can [download fzf executable][bin] alone if you don't need the extra
+stuff.
 
 [bin]: https://github.com/junegunn/fzf-bin/releases
 
-#### Using git (recommended)
+### Using git
 
 Clone this repository and run
 [install](https://github.com/junegunn/fzf/blob/master/install) script.
@@ -45,7 +42,7 @@ git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
 ~/.fzf/install
 ```
 
-#### Using Homebrew
+### Using Homebrew
 
 On OS X, you can use [Homebrew](http://brew.sh/) to install fzf.
 
@@ -56,31 +53,49 @@ brew install fzf
 /usr/local/opt/fzf/install
 ```
 
-#### Install as Vim plugin
+### Vim plugin
 
-Once you have cloned the repository, add the following line to your .vimrc.
+You can manually add the directory to `&runtimepath` as follows,
 
 ```vim
+" If installed using git
 set rtp+=~/.fzf
+
+" If installed using Homebrew
+set rtp+=/usr/local/opt/fzf
 ```
 
-Or you can have [vim-plug](https://github.com/junegunn/vim-plug) manage fzf
-(recommended):
+But it's recommended that you use a plugin manager like
+[vim-plug](https://github.com/junegunn/vim-plug).
 
 ```vim
 Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
 ```
 
-#### Upgrading fzf
+### Upgrading fzf
 
 fzf is being actively developed and you might want to upgrade it once in a
 while. Please follow the instruction below depending on the installation
-method.
+method used.
 
 - git: `cd ~/.fzf && git pull && ./install`
 - brew: `brew update; brew reinstall fzf`
 - vim-plug: `:PlugUpdate fzf`
 
+### Windows
+
+Pre-built binaries for Windows can be downloaded [here][bin]. However, other
+components of the project may not work on Windows. You might want to consider
+installing fzf on [Windows Subsystem for Linux][wsl] where everything runs
+flawlessly.
+
+[wsl]: https://blogs.msdn.microsoft.com/wsl/
+
+Building fzf
+------------
+
+See [BUILD.md](BUILD.md).
+
 Usage
 -----
 
@@ -101,27 +116,50 @@ vim $(fzf)
 
 #### Using the finder
 
-- `CTRL-J` / `CTRL-K` (or `CTRL-N` / `CTRL-P)` to move cursor up and down
+- `CTRL-J` / `CTRL-K` (or `CTRL-N` / `CTRL-P`) to move cursor up and down
 - `Enter` key to select the item, `CTRL-C` / `CTRL-G` / `ESC` to exit
 - On multi-select mode (`-m`), `TAB` and `Shift-TAB` to mark multiple items
 - Emacs style key bindings
 - Mouse: scroll, click, double-click; shift-click and shift-scroll on
   multi-select mode
 
+#### Layout
+
+fzf by default starts in fullscreen mode, but you can make it start below the
+cursor with `--height` option.
+
+```sh
+vim $(fzf --height 40%)
+```
+
+Also check out `--reverse` option if you prefer "top-down" layout instead of
+the default "bottom-up" layout.
+
+```sh
+vim $(fzf --height 40% --reverse)
+```
+
+You can add these options to `$FZF_DEFAULT_OPTS` so that they're applied by
+default.
+
+```sh
+export FZF_DEFAULT_OPTS='--height 40% --reverse'
+```
+
 #### Search syntax
 
 Unless otherwise specified, fzf starts in "extended-search mode" where you can
 type in multiple search terms delimited by spaces. e.g. `^music .mp3$ sbtrkt
-!rmx`
+!fire`
 
-| Token    | Match type           | Description                      |
-| -------- | -------------------- | -------------------------------- |
-| `sbtrkt` | fuzzy-match          | Items that match `sbtrkt`        |
-| `^music` | prefix-exact-match   | Items that start with `music`    |
-| `.mp3$`  | suffix-exact-match   | Items that end with `.mp3`       |
-| `'wild`  | exact-match (quoted) | Items that include `wild`        |
-| `!rmx`   | inverse-fuzzy-match  | Items that do not match `rmx`    |
-| `!'fire` | inverse-exact-match  | Items that do not include `fire` |
+| Token    | Match type                 | Description                       |
+| -------- | -------------------------- | --------------------------------- |
+| `sbtrkt` | fuzzy-match                | Items that match `sbtrkt`         |
+| `^music` | prefix-exact-match         | Items that start with `music`     |
+| `.mp3$`  | suffix-exact-match         | Items that end with `.mp3`        |
+| `'wild`  | exact-match (quoted)       | Items that include `wild`         |
+| `!fire`  | inverse-exact-match        | Items that do not include `fire`  |
+| `!.mp3$` | inverse-suffix-exact-match | Items that do not end with `.mp3` |
 
 If you don't prefer fuzzy matching and do not wish to "quote" every word,
 start fzf with `-e` or `--exact` option. Note that when  `--exact` is set,
@@ -144,6 +182,10 @@ or `py`.
     - Default options
     - e.g. `export FZF_DEFAULT_OPTS="--reverse --inline-info"`
 
+#### Options
+
+See the man page (`man fzf`) for the full list of options.
+
 Examples
 --------
 
@@ -170,6 +212,13 @@ cat /usr/share/dict/words | fzf-tmux -l 20% --multi --reverse
 It will still work even when you're not on tmux, silently ignoring `-[udlr]`
 options, so you can invariably use `fzf-tmux` in your scripts.
 
+Alternatively, you can use `--height HEIGHT[%]` option not to start fzf in
+fullscreen mode.
+
+```sh
+fzf --height 40%
+```
+
 Key bindings for command line
 -----------------------------
 
@@ -187,14 +236,16 @@ fish.
     - Set `FZF_ALT_C_COMMAND` to override the default command
     - Set `FZF_ALT_C_OPTS` to pass additional options
 
-If you're on a tmux session, fzf will start in a split pane. You may disable
-this tmux integration by setting `FZF_TMUX` to 0, or change the height of the
-pane with `FZF_TMUX_HEIGHT` (e.g. `20`, `50%`).
+If you're on a tmux session, you can start fzf in a split pane by setting
+`FZF_TMUX` to 1, and change the height of the pane with `FZF_TMUX_HEIGHT`
+(e.g. `20`, `50%`).
 
 If you use vi mode on bash, you need to add `set -o vi` *before* `source
 ~/.fzf.bash` in your .bashrc, so that it correctly sets up key bindings for vi
 mode.
 
+More tips can be found on [the wiki page](https://github.com/junegunn/fzf/wiki/Configuring-shell-key-bindings).
+
 Fuzzy completion for bash and zsh
 ---------------------------------
 
@@ -304,7 +355,7 @@ If you have set up fzf for Vim, `:FZF` command will be added.
 :FZF ~
 
 " With options
-:FZF --no-sort -m /tmp
+:FZF --no-sort --reverse --inline-info /tmp
 
 " Bang version starts in fullscreen instead of using tmux pane or Neovim split
 :FZF!
@@ -318,7 +369,7 @@ Note that the environment variables `FZF_DEFAULT_COMMAND` and
 `FZF_DEFAULT_OPTS` also apply here. Refer to [the wiki page][fzf-config] for
 customization.
 
-[fzf-config]: https://github.com/junegunn/fzf/wiki/Configuring-FZF-command-(vim)
+[fzf-config]: https://github.com/junegunn/fzf/wiki/Configuring-Vim-plugin
 
 #### `fzf#run`
 
@@ -346,7 +397,8 @@ page](https://github.com/junegunn/fzf/wiki/Examples-(vim)).
 
 `fzf#wrap([name string,] [opts dict,] [fullscreen boolean])` is a helper
 function that decorates the options dictionary so that it understands
-`g:fzf_layout`, `g:fzf_action`, and `g:fzf_history_dir` like `:FZF`.
+`g:fzf_layout`, `g:fzf_action`, `g:fzf_colors`, and `g:fzf_history_dir` like
+`:FZF`.
 
 ```vim
 command! -bang MyStuff
@@ -390,6 +442,12 @@ fzf
 export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
 ```
 
+If you don't want to exclude hidden files, use the following command:
+
+```sh
+export FZF_DEFAULT_COMMAND='ag --hidden --ignore .git -g ""'
+```
+
 #### `git ls-tree` for fast traversal
 
 If you're running fzf in a large git repository, `git ls-tree` can boost up the
@@ -406,19 +464,41 @@ export FZF_DEFAULT_COMMAND='
 
 It's [a known bug of fish](https://github.com/fish-shell/fish-shell/issues/1362)
 that it doesn't allow reading from STDIN in command substitution, which means
-simple `vim (fzf)` won't work as expected. The workaround is to store the result
-of fzf to a temporary file.
+simple `vim (fzf)` won't work as expected. The workaround is to use the `read`
+fish command:
 
 ```sh
-fzf > $TMPDIR/fzf.result; and vim (cat $TMPDIR/fzf.result)
+fzf | read -l result; and vim $result
 ```
 
-License
--------
+or, for multiple results:
 
-[MIT](LICENSE)
+```sh
+fzf -m | while read -l r; set result $result $r; end; and vim $result
+```
 
-Author
-------
+The globbing system is different in fish and thus `**` completion will not work.
+However, the `CTRL-T` command will use the last token on the commandline as the
+root folder for the recursive search. For instance, hitting `CTRL-T` at the end
+of the following commandline
 
-Junegunn Choi
+```sh
+ls /var/
+```
+
+will list all files and folders under `/var/`.
+
+When using a custom `FZF_CTRL_T_COMMAND`, use the unexpanded `$dir` variable to
+make use of this feature. `$dir` defaults to `.` when the last token is not a
+valid directory. Example:
+
+```sh
+set -l FZF_CTRL_T_COMMAND "command find -L \$dir -type f 2> /dev/null | sed '1d; s#^\./##'"
+```
+
+[License](LICENSE)
+------------------
+
+The MIT License (MIT)
+
+Copyright (c) 2017 Junegunn Choi

bin/fzf-tmux

@@ -17,6 +17,7 @@ swap=""
 close=""
 term=""
 [[ -n "$LINES" ]] && lines=$LINES || lines=$(tput lines)
+[[ -n "$COLUMNS" ]] && columns=$COLUMNS || columns=$(tput cols)
 
 help() {
   >&2 echo 'usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
@@ -83,7 +84,7 @@ while [[ $# -gt 0 ]]; do
       else
         if [[ -n "$swap" ]]; then
           if [[ "$arg" =~ ^.l ]]; then
-            [[ -n "$COLUMNS" ]] && max=$COLUMNS || max=$(tput cols)
+            max=$columns
           else
             max=$lines
           fi
@@ -108,11 +109,14 @@ while [[ $# -gt 0 ]]; do
   [[ -n "$skip" ]] && args+=("$arg")
 done
 
-if [[ -z "$TMUX" ]] || [[ "$lines" -le 15 ]]; then
+if [[ -z "$TMUX" || "$opt" =~ ^-h && "$columns" -le 40 || ! "$opt" =~ ^-h && "$lines" -le 15 ]]; then
   "$fzf" "${args[@]}"
   exit $?
 fi
 
+# --height option is not allowed
+args+=("--no-height")
+
 # Handle zoomed tmux pane by moving it to a temp window
 if tmux list-panes -F '#F' | grep -q Z; then
   zoomed=1
@@ -161,14 +165,14 @@ done
 
 if [[ -n "$term" ]] || [[ -t 0 ]]; then
   cat <<< "\"$fzf\" $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
-  tmux set-window-option synchronize-panes off \;\
+  TMUX=$(echo $TMUX | cut -d , -f 1,2) tmux set-window-option synchronize-panes off \;\
     set-window-option remain-on-exit off \;\
     split-window $opt "cd $(printf %q "$PWD");$envs bash $argsf" $swap \
     > /dev/null 2>&1
 else
   mkfifo $fifo1
   cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" > $argsf
-  tmux set-window-option synchronize-panes off \;\
+  TMUX=$(echo $TMUX | cut -d , -f 1,2) tmux set-window-option synchronize-panes off \;\
     set-window-option remain-on-exit off \;\
     split-window $opt "$envs bash $argsf" $swap \
     > /dev/null 2>&1

install

@@ -2,9 +2,7 @@
 
 set -u
 
-[[ "$@" =~ --pre ]] && version=0.13.5 pre=1 ||
-                       version=0.13.5 pre=0
-
+version=0.16.0
 auto_completion=
 key_bindings=
 update_config=2
@@ -48,7 +46,7 @@ for opt in "$@"; do
     --no-update-rc)    update_config=0   ;;
     --32)              binary_arch=386   ;;
     --64)              binary_arch=amd64 ;;
-    --bin|--pre)       ;;
+    --bin)             ;;
     *)
       echo "unknown option: $opt"
       help
@@ -121,7 +119,7 @@ try_wget() {
 
 download() {
   echo "Downloading bin/fzf ..."
-  if [ $pre = 0 ]; then
+  if [[ ! "$version" =~ alpha ]]; then
     if [ -x "$fzf_base"/bin/fzf ]; then
       echo "  - Already exists"
       check_binary && return
@@ -137,7 +135,10 @@ download() {
     return
   fi
 
-  local url=https://github.com/junegunn/fzf-bin/releases/download/$version/${1}.tgz
+  local url
+  [[ "$version" =~ alpha ]] &&
+    url=https://github.com/junegunn/fzf-bin/releases/download/alpha/${1}.tgz ||
+    url=https://github.com/junegunn/fzf-bin/releases/download/$version/${1}.tgz
   set -o pipefail
   if ! (try_curl $url || try_wget $url); then
     set +o pipefail
@@ -301,12 +302,6 @@ if [[ ! "\$PATH" == *$fzf_base/bin* ]]; then
   export PATH="\$PATH:$fzf_base/bin"
 fi
 
-# Man path
-# --------
-if [[ ! "\$MANPATH" == *$fzf_base/man* && -d "$fzf_base/man" ]]; then
-  export MANPATH="\$MANPATH:$fzf_base/man"
-fi
-
 # Auto-completion
 # ---------------
 $fzf_completion

man/man1/fzf-tmux.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2016 Junegunn Choi
+Copyright (c) 2017 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf-tmux 1 "Aug 2016" "fzf 0.13.5" "fzf-tmux - open fzf in tmux split pane"
+.TH fzf-tmux 1 "Jan 2017" "fzf 0.16.0" "fzf-tmux - open fzf in tmux split pane"
 
 .SH NAME
 fzf-tmux - open fzf in tmux split pane

man/man1/fzf.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2016 Junegunn Choi
+Copyright (c) 2017 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf 1 "Aug 2016" "fzf 0.13.5" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "Jan 2017" "fzf 0.16.0" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -47,6 +47,19 @@ Case-insensitive match (default: smart-case match)
 .TP
 .B "+i"
 Case-sensitive match
+.TP
+.B "--literal"
+Do not normalize latin script letters for matching.
+.TP
+.BI "--algo=" TYPE
+Fuzzy matching algorithm (default: v2)
+
+.br
+.BR v2 "     Optimal scoring algorithm (quality)"
+.br
+.BR v1 "     Faster but not guaranteed to find the optimal result (performance)"
+.br
+
 .TP
 .BI "-n, --nth=" "N[,..]"
 Comma-separated list of field index expressions for limiting search scope.
@@ -116,10 +129,30 @@ Number of screen columns to keep to the right of the highlighted substring
 (default: 10). Setting it to a large value will cause the text to be positioned
 on the center of the screen.
 .TP
+.B "--filepath-word"
+Make word-wise movements and actions respect path separators. The following
+actions are affected:
+
+\fBbackward-kill-word\fR
+.br
+\fBbackward-word\fR
+.br
+\fBforward-word\fR
+.br
+\fBkill-word\fR
+.TP
 .BI "--jump-labels=" "CHARS"
 Label characters for \fBjump\fR and \fBjump-accept\fR
 .SS Layout
 .TP
+.BI "--height=" "HEIGHT[%]"
+Display fzf window below the cursor with the given height instead of using
+the full screen.
+.TP
+.BI "--min-height=" "HEIGHT"
+Minimum height when \fB--height\fR is given in percent (default: 10).
+Ignored when \fB--height\fR is not specified.
+.TP
 .B "--reverse"
 Reverse orientation
 .TP
@@ -175,7 +208,9 @@ Number of spaces for a tab character (default: 8)
 .BI "--color=" "[BASE_SCHEME][,COLOR:ANSI]"
 Color configuration. The name of the base color scheme is followed by custom
 color mappings. Ansi color code of -1 denotes terminal default
-foreground/background color.
+foreground/background color. You can also specify 24-bit color in \fB#rrggbb\fR
+format, but the support for 24-bit colors is experimental and only works when
+\fB--height\fR option is used.
 
 .RS
 e.g. \fBfzf --color=bg+:24\fR
@@ -206,6 +241,9 @@ e.g. \fBfzf --color=bg+:24\fR
     \fBheader  \fRHeader
 .RE
 .TP
+.B "--no-bold"
+Do not use bold text
+.TP
 .B "--black"
 Use black background
 .SS History
@@ -222,17 +260,24 @@ automatically truncated when the number of the lines exceeds the value.
 .TP
 .BI "--preview=" "COMMAND"
 Execute the given command for the current line and display the result on the
-preview window. \fB{}\fR is the placeholder for the quoted string of the
-current line.
+preview window. \fB{}\fR in the command is the placeholder that is replaced to
+the single-quoted string of the current line. To transform the replacement
+string, specify field index expressions between the braces (See \fBFIELD INDEX
+EXPRESSION\fR for the details). Also, \fB{q}\fR is replaced to the current
+query string.
 
 .RS
 e.g. \fBfzf --preview="head -$LINES {}"\fR
+     \fBls -l | fzf --preview="echo user={3} when={-4..-2}; cat {-1}" --header-lines=1\fR
+
+Note that you can escape a placeholder pattern by prepending a backslash.
 .RE
 .TP
-.BI "--preview-window=" "[POSITION][:SIZE[%]][:hidden]"
+.BI "--preview-window=" "[POSITION][:SIZE[%]][:wrap][:hidden]"
 Determine the layout of the preview window. If the argument ends with
 \fB:hidden\fR, the preview window will be hidden by default until
-\fBtoggle-preview\fR action is triggered.
+\fBtoggle-preview\fR action is triggered. Long lines are truncated by default.
+Line wrap can be enabled with \fB:wrap\fR flag.
 
 .RS
 .B POSITION: (default: right)
@@ -275,6 +320,12 @@ with the default enter key.
 e.g. \fBfzf --expect=ctrl-v,ctrl-t,alt-s,f1,f2,~,@\fR
 .RE
 .TP
+.B "--read0"
+Read input delimited by ASCII NUL character instead of newline character
+.TP
+.B "--print0"
+Print output delimited by ASCII NUL character instead of newline character
+.TP
 .B "--sync"
 Synchronous search for multi-staged filtering. If specified, fzf will launch
 ncurses finder only after the input stream is complete.
@@ -342,7 +393,7 @@ with the given string. An anchored-match term is also an exact-match term.
 
 .SS Negation
 If a term is prefixed by \fB!\fR, fzf will exclude the lines that satisfy the
-term from the result.
+term from the result. In this case, fzf performs exact match by default.
 
 .SS Exact-match by default
 If you don't prefer fuzzy matching and do not wish to "quote" (prefixing with
@@ -366,7 +417,8 @@ e.g. \fBfzf --bind=ctrl-j:accept,ctrl-k:kill-line\fR
 .B AVAILABLE KEYS:    (SYNONYMS)
     \fIctrl-[a-z]\fR
     \fIalt-[a-z]\fR
-    \fIf[1-10]\fR
+    \fIalt-[0-9]\fR
+    \fIf[1-12]\fR
     \fIenter\fR       (\fIreturn\fR \fIctrl-m\fR)
     \fIspace\fR
     \fIbspace\fR      (\fIbs\fR)
@@ -418,6 +470,10 @@ e.g. \fBfzf --bind=ctrl-j:accept,ctrl-k:kill-line\fR
     \fBnext-history\fR          (\fIctrl-n\fR on \fB--history\fR)
     \fBpage-down\fR             \fIpgdn\fR
     \fBpage-up\fR               \fIpgup\fR
+    \fBpreview-down\fR
+    \fBpreview-up\fR
+    \fBpreview-page-down\fR
+    \fBpreview-page-up\fR
     \fBprevious-history\fR      (\fIctrl-p\fR on \fB--history\fR)
     \fBprint-query\fR           (print query and exit)
     \fBselect-all\fR
@@ -440,9 +496,11 @@ binding \fBenter\fR key to \fBless\fR command like follows.
 
     \fBfzf --bind "enter:execute(less {})"\fR
 
-\fB{}\fR is the placeholder for the quoted string of the current line.
-If the command contains parentheses, you can use any of the following
-alternative notations to avoid parse errors.
+You can use the same placeholder expressions as in \fB--preview\fR.
+
+If the command contains parentheses, fzf may fail to parse the expression. In
+that case, you can use any of the following alternative notations to avoid
+parse errors.
 
     \fBexecute[...]\fR
     \fBexecute~...~\fR
@@ -461,7 +519,7 @@ alternative notations to avoid parse errors.
 .RS
 This is the special form that frees you from parse errors as it does not expect
 the closing character. The catch is that it should be the last one in the
-comma-separated list.
+comma-separated list of key-action pairs.
 .RE
 
 \fBexecute-multi(...)\fR is an alternative action that executes the command

plugin/fzf.vim

@@ -21,6 +21,11 @@
 " OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 " WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+if exists('g:loaded_fzf')
+  finish
+endif
+let g:loaded_fzf = 1
+
 let s:default_layout = { 'down': '~40%' }
 let s:layout_keys = ['window', 'up', 'down', 'left', 'right']
 let s:fzf_go = expand('<sfile>:h:h').'/bin/fzf'
@@ -75,7 +80,13 @@ function! s:shellesc(arg)
 endfunction
 
 function! s:escape(path)
-  return escape(a:path, ' $%#''"\')
+  let escaped_chars = '$%#''"'
+
+  if has('unix')
+    let escaped_chars .= ' \'
+  endif
+
+  return escape(a:path, escaped_chars)
 endfunction
 
 " Upgrade legacy options
@@ -144,7 +155,8 @@ function! s:common_sink(action, lines) abort
       else
         call s:open(cmd, item)
       endif
-      if exists('#BufEnter') && isdirectory(item)
+      if !has('patch-8.0.0177') && !has('nvim-0.2') && exists('#BufEnter')
+            \ && isdirectory(item)
         doautocmd BufEnter
       endif
     endfor
@@ -154,6 +166,22 @@ function! s:common_sink(action, lines) abort
   endtry
 endfunction
 
+function! s:get_color(attr, ...)
+  for group in a:000
+    let code = synIDattr(synIDtrans(hlID(group)), a:attr, 'cterm')
+    if code =~ '^[0-9]\+$'
+      return code
+    endif
+  endfor
+  return ''
+endfunction
+
+function! s:defaults()
+  let rules = copy(get(g:, 'fzf_colors', {}))
+  let colors = join(map(items(filter(map(rules, 'call("s:get_color", v:val)'), '!empty(v:val)')), 'join(v:val, ":")'), ',')
+  return empty(colors) ? '' : ('--color='.colors)
+endfunction
+
 " [name string,] [opts dict,] [fullscreen boolean]
 function! fzf#wrap(...)
   let args = ['', {}, 0]
@@ -185,8 +213,10 @@ function! fzf#wrap(...)
     endif
   endif
 
+  " Colors: g:fzf_colors
+  let opts.options = s:defaults() .' '. get(opts, 'options', '')
+
   " History: g:fzf_history_dir
-  let opts.options = get(opts, 'options', '')
   if len(name) && len(get(g:, 'fzf_history_dir', ''))
     let dir = expand(g:fzf_history_dir)
     if !isdirectory(dir)
@@ -208,10 +238,31 @@ function! fzf#wrap(...)
   return opts
 endfunction
 
+function! fzf#shellescape(path)
+  if has('win32') || has('win64')
+    let shellslash = &shellslash
+    try
+      set noshellslash
+      return shellescape(a:path)
+    finally
+      let &shellslash = shellslash
+    endtry
+  endif
+  return shellescape(a:path)
+endfunction
+
 function! fzf#run(...) abort
 try
   let oshell = &shell
-  set shell=sh
+  let useshellslash = &shellslash
+
+  if has('win32') || has('win64')
+    set shell=cmd.exe
+    set noshellslash
+  else
+    set shell=sh
+  endif
+
   if has('nvim') && len(filter(range(1, bufnr('$')), 'bufname(v:val) =~# ";#FZF"'))
     call s:warn('FZF is already running!')
     return []
@@ -228,7 +279,7 @@ try
   if !has_key(dict, 'source') && !empty($FZF_DEFAULT_COMMAND)
     let temps.source = tempname()
     call writefile(split($FZF_DEFAULT_COMMAND, "\n"), temps.source)
-    let dict.source = (empty($SHELL) ? 'sh' : $SHELL) . ' ' . s:shellesc(temps.source)
+    let dict.source = (empty($SHELL) ? &shell : $SHELL) . ' ' . s:shellesc(temps.source)
   endif
 
   if has_key(dict, 'source')
@@ -246,18 +297,30 @@ try
   else
     let prefix = ''
   endif
-  let tmux = (!has('nvim') || get(g:, 'fzf_prefer_tmux', 0)) && s:tmux_enabled() && s:splittable(dict)
+
+  let use_height = has_key(dict, 'down') &&
+        \ !(has('nvim') || has('win32') || has('win64') || s:present(dict, 'up', 'left', 'right')) &&
+        \ executable('tput') && filereadable('/dev/tty')
+  let tmux = !use_height && (!has('nvim') || get(g:, 'fzf_prefer_tmux', 0)) && s:tmux_enabled() && s:splittable(dict)
+  let term = has('nvim') && !tmux
+  if use_height
+    let optstr .= ' --height='.s:calc_size(&lines, dict.down, dict)
+  elseif term
+    let optstr .= ' --no-height'
+  endif
   let command = prefix.(tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
 
-  if has('nvim') && !tmux
+  if term
     return s:execute_term(dict, command, temps)
   endif
 
-  let lines = tmux ? s:execute_tmux(dict, command, temps) : s:execute(dict, command, temps)
+  let lines = tmux ? s:execute_tmux(dict, command, temps)
+                 \ : s:execute(dict, command, use_height, temps)
   call s:callback(dict, lines)
   return lines
 finally
   let &shell = oshell
+  let &shellslash = useshellslash
 endtry
 endfunction
 
@@ -276,10 +339,10 @@ function! s:fzf_tmux(dict)
     if s:present(a:dict, o)
       let spec = a:dict[o]
       if (o == 'up' || o == 'down') && spec[0] == '~'
-        let size = '-'.o[0].s:calc_size(&lines, spec[1:], a:dict)
+        let size = '-'.o[0].s:calc_size(&lines, spec, a:dict)
       else
         " Legacy boolean option
-        let size = '-'.o[0].(spec == 1 ? '' : spec)
+        let size = '-'.o[0].(spec == 1 ? '' : substitute(spec, '^\~', '', ''))
       endif
       break
     endif
@@ -289,7 +352,8 @@ function! s:fzf_tmux(dict)
 endfunction
 
 function! s:splittable(dict)
-  return s:present(a:dict, 'up', 'down', 'left', 'right')
+  return s:present(a:dict, 'up', 'down') && &lines > 15 ||
+        \ s:present(a:dict, 'left', 'right') && &columns > 40
 endfunction
 
 function! s:pushd(dict)
@@ -329,7 +393,11 @@ function! s:xterm_launcher()
     \ &columns, &lines/2, getwinposx(), getwinposy())
 endfunction
 unlet! s:launcher
-let s:launcher = function('s:xterm_launcher')
+if has('win32') || has('win64')
+  let s:launcher = '%s'
+else
+  let s:launcher = function('s:xterm_launcher')
+endif
 
 function! s:exit_handler(code, command, ...)
   if a:code == 130
@@ -344,18 +412,28 @@ function! s:exit_handler(code, command, ...)
   return 1
 endfunction
 
-function! s:execute(dict, command, temps) abort
+function! s:execute(dict, command, use_height, temps) abort
   call s:pushd(a:dict)
-  silent! !clear 2> /dev/null
+  if has('unix') && !a:use_height
+    silent! !clear 2> /dev/null
+  endif
   let escaped = escape(substitute(a:command, '\n', '\\n', 'g'), '%#')
   if has('gui_running')
     let Launcher = get(a:dict, 'launcher', get(g:, 'Fzf_launcher', get(g:, 'fzf_launcher', s:launcher)))
     let fmt = type(Launcher) == 2 ? call(Launcher, []) : Launcher
-    let command = printf(fmt, "'".substitute(escaped, "'", "'\"'\"'", 'g')."'")
+    if has('unix')
+      let escaped = "'".substitute(escaped, "'", "'\"'\"'", 'g')."'"
+    endif
+    let command = printf(fmt, escaped)
   else
     let command = escaped
   endif
-  execute 'silent !'.command
+  if a:use_height
+    let stdin = has_key(a:dict, 'source') ? '' : '< /dev/tty'
+    call system(printf('tput cup %d > /dev/tty; tput cnorm > /dev/tty; %s %s 2> /dev/tty', &lines, command, stdin))
+  else
+    execute 'silent !'.command
+  endif
   let exit_status = v:shell_error
   redraw!
   return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
@@ -375,10 +453,11 @@ function! s:execute_tmux(dict, command, temps) abort
 endfunction
 
 function! s:calc_size(max, val, dict)
-  if a:val =~ '%$'
-    let size = a:max * str2nr(a:val[:-2]) / 100
+  let val = substitute(a:val, '^\~', '', '')
+  if val =~ '%$'
+    let size = a:max * str2nr(val[:-2]) / 100
   else
-    let size = min([a:max, str2nr(a:val)])
+    let size = min([a:max, str2nr(val)])
   endif
 
   let srcsz = -1
@@ -404,24 +483,25 @@ function! s:split(dict)
   \ 'right': ['vertical botright', 'vertical resize', &columns] }
   let ppos = s:getpos()
   try
-    for [dir, triple] in items(directions)
-      let val = get(a:dict, dir, '')
-      if !empty(val)
-        let [cmd, resz, max] = triple
-        if (dir == 'up' || dir == 'down') && val[0] == '~'
-          let sz = s:calc_size(max, val[1:], a:dict)
-        else
-          let sz = s:calc_size(max, val, {})
-        endif
-        execute cmd sz.'new'
-        execute resz sz
-        return [ppos, {}]
-      endif
-    endfor
     if s:present(a:dict, 'window')
-      execute a:dict.window
-    else
+      execute 'keepalt' a:dict.window
+    elseif !s:splittable(a:dict)
       execute (tabpagenr()-1).'tabnew'
+    else
+      for [dir, triple] in items(directions)
+        let val = get(a:dict, dir, '')
+        if !empty(val)
+          let [cmd, resz, max] = triple
+          if (dir == 'up' || dir == 'down') && val[0] == '~'
+            let sz = s:calc_size(max, val, a:dict)
+          else
+            let sz = s:calc_size(max, val, {})
+          endif
+          execute cmd sz.'new'
+          execute resz sz
+          return [ppos, {}]
+        endif
+      endfor
     endif
     return [ppos, { '&l:wfw': &l:wfw, '&l:wfh': &l:wfh }]
   finally
@@ -430,21 +510,24 @@ function! s:split(dict)
 endfunction
 
 function! s:execute_term(dict, command, temps) abort
+  let winrest = winrestcmd()
+  let pbuf = bufnr('')
   let [ppos, winopts] = s:split(a:dict)
-  let fzf = { 'buf': bufnr('%'), 'ppos': ppos, 'dict': a:dict, 'temps': a:temps,
-            \ 'winopts': winopts, 'command': a:command }
+  let fzf = { 'buf': bufnr(''), 'pbuf': pbuf, 'ppos': ppos, 'dict': a:dict, 'temps': a:temps,
+            \ 'winopts': winopts, 'winrest': winrest, 'lines': &lines,
+            \ 'columns': &columns, 'command': a:command }
   function! fzf.switch_back(inplace)
     if a:inplace && bufnr('') == self.buf
-      " FIXME: Can't re-enter normal mode from terminal mode
-      " execute "normal! \<c-^>"
-      b #
+      if bufexists(self.pbuf)
+        execute 'keepalt b' self.pbuf
+      endif
       " No other listed buffer
       if bufnr('') == self.buf
         enew
       endif
     endif
   endfunction
-  function! fzf.on_exit(id, code)
+  function! fzf.on_exit(id, code, _event)
     if s:getpos() == self.ppos " {'window': 'enew'}
       for [opt, val] in items(self.winopts)
         execute 'let' opt '=' val
@@ -464,6 +547,10 @@ function! s:execute_term(dict, command, temps) abort
       execute 'bd!' self.buf
     endif
 
+    if &lines == self.lines && &columns == self.columns && s:getpos() == self.ppos
+      execute self.winrest
+    endif
+
     if !s:exit_handler(a:code, self.command, 1)
       return
     endif
@@ -549,13 +636,22 @@ let s:default_action = {
   \ 'ctrl-x': 'split',
   \ 'ctrl-v': 'vsplit' }
 
+function! s:shortpath()
+  let short = pathshorten(fnamemodify(getcwd(), ':~:.'))
+  return empty(short) ? '~/' : short . (short =~ '/$' ? '' : '/')
+endfunction
+
 function! s:cmd(bang, ...) abort
   let args = copy(a:000)
-  let opts = {}
+  let opts = { 'options': '--multi ' }
   if len(args) && isdirectory(expand(args[-1]))
-    let opts.dir = substitute(remove(args, -1), '\\\(["'']\)', '\1', 'g')
+    let opts.dir = substitute(substitute(remove(args, -1), '\\\(["'']\)', '\1', 'g'), '[/\\]*$', '/', '')
+    let opts.options .= ' --prompt '.fzf#shellescape(opts.dir)
+  else
+    let opts.options .= ' --prompt '.fzf#shellescape(s:shortpath())
   endif
-  call fzf#run(fzf#wrap('FZF', extend({'options': join(args)}, opts), a:bang))
+  let opts.options .= ' '.join(args)
+  call fzf#run(fzf#wrap('FZF', opts, a:bang))
 endfunction
 
 command! -nargs=* -complete=dir -bang FZF call s:cmd(<bang>0, <f-args>)

shell/completion.bash

@@ -5,7 +5,7 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/-completion.bash
 #
-# - $FZF_TMUX               (default: 1)
+# - $FZF_TMUX               (default: 0)
 # - $FZF_TMUX_HEIGHT        (default: '40%')
 # - $FZF_COMPLETION_TRIGGER (default: '**')
 # - $FZF_COMPLETION_OPTS    (default: empty)
@@ -30,9 +30,17 @@ fi
 
 ###########################################################
 
+# To redraw line after fzf closes (printf '\e[5n')
+bind '"\e[0n": redraw-current-line'
+
+__fzfcmd_complete() {
+  [ -n "$TMUX_PANE" ] && [ "${FZF_TMUX:-0}" != 0 ] && [ ${LINES:-40} -gt 15 ] &&
+    echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
+}
+
 _fzf_orig_completion_filter() {
   sed 's/^\(.*-F\) *\([^ ]*\).* \([^ ]*\)$/export _fzf_orig_completion_\3="\1 %s \3 #\2";/' |
-  awk -F= '{gsub(/[^a-z0-9_= ;]/, "_", $1); print $1"="$2}'
+  awk -F= '{gsub(/[^A-Za-z0-9_= ;]/, "_", $1); print $1"="$2}'
 }
 
 _fzf_opts_completion() {
@@ -43,35 +51,43 @@ _fzf_opts_completion() {
   opts="
     -x --extended
     -e --exact
+    --algo
     -i +i
     -n --nth
+    --with-nth
     -d --delimiter
     +s --no-sort
     --tac
     --tiebreak
-    --bind
     -m --multi
     --no-mouse
-    --color
-    --black
-    --reverse
+    --bind
+    --cycle
     --no-hscroll
+    --jump-labels
+    --height
+    --literal
+    --reverse
+    --margin
     --inline-info
     --prompt
+    --header
+    --header-lines
+    --ansi
+    --tabstop
+    --color
+    --no-bold
+    --history
+    --history-size
+    --preview
+    --preview-window
     -q --query
     -1 --select-1
     -0 --exit-0
     -f --filter
     --print-query
     --expect
-    --toggle-sort
-    --sync
-    --cycle
-    --history
-    --history-size
-    --header
-    --header-lines
-    --margin"
+    --sync"
 
   case "${prev}" in
   --tiebreak)
@@ -116,8 +132,8 @@ _fzf_handle_dynamic_completion() {
 
 __fzf_generic_path_completion() {
   local cur base dir leftover matches trigger cmd fzf
-  [ "${FZF_TMUX:-1}" != 0 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
-  cmd=$(echo "${COMP_WORDS[0]}" | sed 's/[^a-z0-9_=]/_/g')
+  fzf="$(__fzfcmd_complete)"
+  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
   COMPREPLY=()
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
   cur="${COMP_WORDS[COMP_CWORD]}"
@@ -132,8 +148,7 @@ __fzf_generic_path_completion() {
         leftover=${leftover/#\/}
         [ -z "$dir" ] && dir='.'
         [ "$dir" != "/" ] && dir="${dir/%\//}"
-        tput sc
-        matches=$(eval "$1 $(printf %q "$dir")" | $fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read -r item; do
+        matches=$(eval "$1 $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS" $fzf $2 -q "$leftover" | while read -r item; do
           printf "%q$3 " "$item"
         done)
         matches=${matches% }
@@ -142,7 +157,7 @@ __fzf_generic_path_completion() {
         else
           COMPREPLY=( "$cur" )
         fi
-        tput rc
+        printf '\e[5n'
         return 0
       fi
       dir=$(dirname "$dir")
@@ -160,18 +175,17 @@ _fzf_complete() {
   local cur selected trigger cmd fzf post
   post="$(caller 0 | awk '{print $2}')_post"
   type -t "$post" > /dev/null 2>&1 || post=cat
-  [ "${FZF_TMUX:-1}" != 0 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+  fzf="$(__fzfcmd_complete)"
 
-  cmd=$(echo "${COMP_WORDS[0]}" | sed 's/[^a-z0-9_=]/_/g')
+  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
   cur="${COMP_WORDS[COMP_CWORD]}"
   if [[ "$cur" == *"$trigger" ]]; then
     cur=${cur:0:${#cur}-${#trigger}}
 
-    tput sc
-    selected=$(cat | $fzf $FZF_COMPLETION_OPTS $1 -q "$cur" | $post | tr '\n' ' ')
+    selected=$(cat | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS" $fzf $1 -q "$cur" | $post | tr '\n' ' ')
     selected=${selected% } # Strip trailing space not to repeat "-o nospace"
-    tput rc
+    printf '\e[5n'
 
     if [ -n "$selected" ]; then
       COMPREPLY=("$selected")
@@ -200,10 +214,9 @@ _fzf_complete_kill() {
   [ -n "${COMP_WORDS[COMP_CWORD]}" ] && return 1
 
   local selected fzf
-  [ "${FZF_TMUX:-1}" != 0 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
-  tput sc
-  selected=$(ps -ef | sed 1d | $fzf -m $FZF_COMPLETION_OPTS | awk '{print $2}' | tr '\n' ' ')
-  tput rc
+  fzf="$(__fzfcmd_complete)"
+  selected=$(ps -ef | sed 1d | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-50%} --min-height 15 --reverse $FZF_DEFAULT_OPTS --preview 'echo {}' --preview-window down:3:wrap $FZF_COMPLETION_OPTS" $fzf -m | awk '{print $2}' | tr '\n' ' ')
+  printf '\e[5n'
 
   if [ -n "$selected" ]; then
     COMPREPLY=( "$selected" )
@@ -221,7 +234,7 @@ _fzf_complete_telnet() {
 _fzf_complete_ssh() {
   _fzf_complete '+m' "$@" < <(
     cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | command grep -i '^host' | command grep -v '*') \
-        <(command grep -oE '^[^ ]+' ~/.ssh/known_hosts | tr ',' '\n' | awk '{ print $1 " " $1 }') \
+        <(command grep -oE '^[a-z0-9.,-]+' ~/.ssh/known_hosts | tr ',' '\n' | awk '{ print $1 " " $1 }') \
         <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
         awk '{if (length($2) > 0) {print $2}}' | sort -u
   )
@@ -261,12 +274,9 @@ a_cmds="
 x_cmds="kill ssh telnet unset unalias export"
 
 # Preserve existing completion
-if [ "$_fzf_completion_loaded" != '0.11.3' ]; then
-  # Really wish I could use associative array but OSX comes with bash 3.2 :(
-  eval $(complete | command grep '\-F' | command grep -v _fzf_ |
-    command grep -E " ($(echo $d_cmds $a_cmds $x_cmds | sed 's/ /|/g' | sed 's/+/\\+/g'))$" | _fzf_orig_completion_filter)
-  export _fzf_completion_loaded=0.11.3
-fi
+eval $(complete |
+  sed -E '/-F/!d; / _fzf/d; '"/ ($(echo $d_cmds $a_cmds $x_cmds | sed 's/ /|/g; s/+/\\+/g'))$/"'!d' |
+  _fzf_orig_completion_filter)
 
 if type _completion_loader > /dev/null 2>&1; then
   _fzf_completion_loader=1
@@ -277,7 +287,7 @@ _fzf_defc() {
   cmd="$1"
   func="$2"
   opts="$3"
-  orig_var="_fzf_orig_completion_$cmd"
+  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
   orig="${!orig_var}"
   if [ -n "$orig" ]; then
     printf -v def "$orig" "$func"

shell/completion.zsh

@@ -5,7 +5,7 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/-completion.zsh
 #
-# - $FZF_TMUX               (default: 1)
+# - $FZF_TMUX               (default: 0)
 # - $FZF_TMUX_HEIGHT        (default: '40%')
 # - $FZF_COMPLETION_TRIGGER (default: '**')
 # - $FZF_COMPLETION_OPTS    (default: empty)
@@ -30,6 +30,11 @@ fi
 
 ###########################################################
 
+__fzfcmd_complete() {
+  [ -n "$TMUX_PANE" ] && [ "${FZF_TMUX:-0}" != 0 ] && [ ${LINES:-40} -gt 15 ] &&
+    echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
+}
+
 __fzf_generic_path_completion() {
   local base lbuf compgen fzf_opts suffix tail fzf dir leftover matches
   # (Q) flag removes a quoting level: "foo\ bar" => "foo bar"
@@ -39,18 +44,18 @@ __fzf_generic_path_completion() {
   fzf_opts=$4
   suffix=$5
   tail=$6
-  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+  fzf="$(__fzfcmd_complete)"
 
   setopt localoptions nonomatch
   dir="$base"
   while [ 1 ]; do
-    if [ -z "$dir" -o -d ${~dir} ]; then
+    if [[ -z "$dir" || -d ${~dir} ]]; then
       leftover=${base/#"$dir"}
       leftover=${leftover/#\/}
       [ -z "$dir" ] && dir='.'
       [ "$dir" != "/" ] && dir="${dir/%\//}"
       dir=${~dir}
-      matches=$(eval "$compgen $(printf %q "$dir")" | ${=fzf} ${=FZF_COMPLETION_OPTS} ${=fzf_opts} -q "$leftover" | while read item; do
+      matches=$(eval "$compgen $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS" ${=fzf} ${=fzf_opts} -q "$leftover" | while read item; do
         echo -n "${(q)item}$suffix "
       done)
       matches=${matches% }
@@ -90,10 +95,10 @@ _fzf_complete() {
   post="${funcstack[2]}_post"
   type $post > /dev/null 2>&1 || post=cat
 
-  [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
+  fzf="$(__fzfcmd_complete)"
 
   _fzf_feed_fifo "$fifo"
-  matches=$(cat "$fifo" | ${=fzf} ${=FZF_COMPLETION_OPTS} ${=fzf_opts} -q "${(Q)prefix}" | $post | tr '\n' ' ')
+  matches=$(cat "$fifo" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS" ${=fzf} ${=fzf_opts} -q "${(Q)prefix}" | $post | tr '\n' ' ')
   if [ -n "$matches" ]; then
     LBUFFER="$lbuf$matches"
   fi
@@ -111,8 +116,8 @@ _fzf_complete_telnet() {
 
 _fzf_complete_ssh() {
   _fzf_complete '+m' "$@" < <(
-    cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | command grep -i '^host' | command grep -v '*') \
-        <(command grep -oE '^[^ ]+' ~/.ssh/known_hosts | tr ',' '\n' | awk '{ print $1 " " $1 }') \
+    command cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | command grep -i '^host' | command grep -v '*') \
+        <(command grep -oE '^[a-z0-9.,-]+' ~/.ssh/known_hosts | tr ',' '\n' | awk '{ print $1 " " $1 }') \
         <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
         awk '{if (length($2) > 0) {print $2}}' | sort -u
   )
@@ -157,8 +162,8 @@ fzf-completion() {
   tail=${LBUFFER:$(( ${#LBUFFER} - ${#trigger} ))}
   # Kill completion (do not require trigger sequence)
   if [ $cmd = kill -a ${LBUFFER[-1]} = ' ' ]; then
-    [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
-    matches=$(ps -ef | sed 1d | ${=fzf} ${=FZF_COMPLETION_OPTS} -m | awk '{print $2}' | tr '\n' ' ')
+    fzf="$(__fzfcmd_complete)"
+    matches=$(ps -ef | sed 1d | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-50%} --min-height 15 --reverse $FZF_DEFAULT_OPTS --preview 'echo {}' --preview-window down:3:wrap $FZF_COMPLETION_OPTS" ${=fzf} -m | awk '{print $2}' | tr '\n' ' ')
     if [ -n "$matches" ]; then
       LBUFFER="$LBUFFER$matches"
     fi
@@ -186,7 +191,7 @@ fzf-completion() {
 
 [ -z "$fzf_default_completion" ] && {
   binding=$(bindkey '^I')
-  [[ $binding =~ 'undefined-key' ]] || fzf_default_completion=$binding[(w)2]
+  [[ $binding =~ 'undefined-key' ]] || fzf_default_completion=$binding[(s: :w)2]
   unset binding
 }
 

shell/key-bindings.bash

@@ -1,11 +1,11 @@
 # Key bindings
 # ------------
 __fzf_select__() {
-  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
     -o -type f -print \
     -o -type d -print \
-    -o -type l -print 2> /dev/null | sed 1d | cut -b3-"}"
-  eval "$cmd | fzf -m $FZF_CTRL_T_OPTS" | while read -r item; do
+    -o -type l -print 2> /dev/null | cut -b3-"}"
+  eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS" fzf -m "$@" | while read -r item; do
     printf '%q ' "$item"
   done
   echo
@@ -13,8 +13,13 @@ __fzf_select__() {
 
 if [[ $- =~ i ]]; then
 
+__fzf_use_tmux__() {
+  [ -n "$TMUX_PANE" ] && [ "${FZF_TMUX:-0}" != 0 ] && [ ${LINES:-40} -gt 15 ]
+}
+
 __fzfcmd() {
-  [ "${FZF_TMUX:-1}" != 0 ] && echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
+  __fzf_use_tmux__ &&
+    echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
 }
 
 __fzf_select_tmux__() {
@@ -26,7 +31,7 @@ __fzf_select_tmux__() {
     height="-l $height"
   fi
 
-  tmux split-window $height "cd $(printf %q "$PWD"); FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS") PATH=$(printf %q "$PATH") FZF_CTRL_T_COMMAND=$(printf %q "$FZF_CTRL_T_COMMAND") FZF_CTRL_T_OPTS=$(printf %q "$FZF_CTRL_T_OPTS") bash -c 'source \"${BASH_SOURCE[0]}\"; RESULT=\"\$(__fzf_select__)\"; tmux setb -b fzf \"\$RESULT\" \\; pasteb -b fzf -t $TMUX_PANE \\; deleteb -b fzf || tmux send-keys -t $TMUX_PANE \"\$RESULT\"'"
+  tmux split-window $height "cd $(printf %q "$PWD"); FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS") PATH=$(printf %q "$PATH") FZF_CTRL_T_COMMAND=$(printf %q "$FZF_CTRL_T_COMMAND") FZF_CTRL_T_OPTS=$(printf %q "$FZF_CTRL_T_OPTS") bash -c 'source \"${BASH_SOURCE[0]}\"; RESULT=\"\$(__fzf_select__ --no-height)\"; tmux setb -b fzf \"\$RESULT\" \\; pasteb -b fzf -t $TMUX_PANE \\; deleteb -b fzf || tmux send-keys -t $TMUX_PANE \"\$RESULT\"'"
 }
 
 fzf-file-widget() {
@@ -41,9 +46,9 @@ fzf-file-widget() {
 
 __fzf_cd__() {
   local cmd dir
-  cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+  cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
     -o -type d -print 2> /dev/null | sed 1d | cut -b3-"}"
-  dir=$(eval "$cmd | $(__fzfcmd) +m $FZF_ALT_C_OPTS") && printf 'cd %q' "$dir"
+  dir=$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS" $(__fzfcmd) +m) && printf 'cd %q' "$dir"
 }
 
 __fzf_history__() (
@@ -51,7 +56,7 @@ __fzf_history__() (
   shopt -u nocaseglob nocasematch
   line=$(
     HISTTIMEFORMAT= history |
-    eval "$(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS" |
+    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS +s --tac --no-reverse -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS +m" $(__fzfcmd) |
     command grep '^ *[0-9]') &&
     if [[ $- =~ H ]]; then
       sed 's/^ *\([0-9]*\)\** .*/!\1/' <<< "$line"
@@ -60,25 +65,18 @@ __fzf_history__() (
     fi
 )
 
-__fzf_use_tmux__() {
-  [ -n "$TMUX_PANE" ] && [ "${FZF_TMUX:-1}" != 0 ] && [ ${LINES:-40} -gt 15 ]
-}
-
-[ $BASH_VERSINFO -gt 3 ] && __use_bind_x=1 || __use_bind_x=0
-__fzf_use_tmux__ && __use_tmux=1 || __use_tmux=0
-
 if [[ ! -o vi ]]; then
   # Required to refresh the prompt after fzf
   bind '"\er": redraw-current-line'
   bind '"\e^": history-expand-line'
 
   # CTRL-T - Paste the selected file path into the command line
-  if [ $__use_bind_x -eq 1 ]; then
+  if [ $BASH_VERSINFO -gt 3 ]; then
     bind -x '"\C-t": "fzf-file-widget"'
-  elif [ $__use_tmux -eq 1 ]; then
-    bind '"\C-t": " \C-u \C-a\C-k$(__fzf_select_tmux__)\e\C-e\C-y\C-a\C-d\C-y\ey\C-h"'
+  elif __fzf_use_tmux__; then
+    bind '"\C-t": " \C-u \C-a\C-k`__fzf_select_tmux__`\e\C-e\C-y\C-a\C-d\C-y\ey\C-h"'
   else
-    bind '"\C-t": " \C-u \C-a\C-k$(__fzf_select__)\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er \C-h"'
+    bind '"\C-t": " \C-u \C-a\C-k`__fzf_select__`\e\C-e\C-y\C-a\C-y\ey\C-h\C-e\er \C-h"'
   fi
 
   # CTRL-R - Paste the selected command from history into the command line
@@ -102,24 +100,22 @@ else
 
   # CTRL-T - Paste the selected file path into the command line
   # - FIXME: Selected items are attached to the end regardless of cursor position
-  if [ $__use_bind_x -eq 1 ]; then
+  if [ $BASH_VERSINFO -gt 3 ]; then
     bind -x '"\C-t": "fzf-file-widget"'
-  elif [ $__use_tmux -eq 1 ]; then
-    bind '"\C-t": "\C-x\C-a$a \C-x\C-addi$(__fzf_select_tmux__)\C-x\C-e\C-x\C-a0P$xa"'
+  elif __fzf_use_tmux__; then
+    bind '"\C-t": "\C-x\C-a$a \C-x\C-addi`__fzf_select_tmux__`\C-x\C-e\C-x\C-a0P$xa"'
   else
-    bind '"\C-t": "\C-x\C-a$a \C-x\C-addi$(__fzf_select__)\C-x\C-e\C-x\C-a0Px$a \C-x\C-r\C-x\C-axa "'
+    bind '"\C-t": "\C-x\C-a$a \C-x\C-addi`__fzf_select__`\C-x\C-e\C-x\C-a0Px$a \C-x\C-r\C-x\C-axa "'
   fi
   bind -m vi-command '"\C-t": "i\C-t"'
 
   # CTRL-R - Paste the selected command from history into the command line
-  bind '"\C-r": "\C-x\C-addi$(__fzf_history__)\C-x\C-e\C-x^\C-x\C-a$a\C-x\C-r"'
+  bind '"\C-r": "\C-x\C-addi`__fzf_history__`\C-x\C-e\C-x^\C-x\C-a$a\C-x\C-r"'
   bind -m vi-command '"\C-r": "i\C-r"'
 
   # ALT-C - cd into the selected directory
-  bind '"\ec": "\C-x\C-addi$(__fzf_cd__)\C-x\C-e\C-x\C-r\C-m"'
-  bind -m vi-command '"\ec": "ddi$(__fzf_cd__)\C-x\C-e\C-x\C-r\C-m"'
+  bind '"\ec": "\C-x\C-addi`__fzf_cd__`\C-x\C-e\C-x\C-r\C-m"'
+  bind -m vi-command '"\ec": "ddi`__fzf_cd__`\C-x\C-e\C-x\C-r\C-m"'
 fi
 
-unset -v __use_tmux __use_bind_x
-
 fi

shell/key-bindings.fish

@@ -1,58 +1,75 @@
 # Key bindings
 # ------------
 function fzf_key_bindings
-  # Due to a bug of fish, we cannot use command substitution,
-  # so we use temporary file instead
-  if [ -z "$TMPDIR" ]
-    set -g TMPDIR /tmp
-  end
 
-  function __fzf_escape
-    while read item
-      echo -n (echo -n "$item" | sed -E 's/([ "$~'\''([{<>})])/\\\\\\1/g')' '
+  # Store last token in $dir as root for the 'find' command
+  function fzf-file-widget -d "List files and folders"
+    set -l dir (commandline -t)
+    # The commandline token might be escaped, we need to unescape it.
+    set dir (eval "printf '%s' $dir")
+    if [ ! -d "$dir" ]
+      set dir .
     end
-  end
+    # Some 'find' versions print undesired duplicated slashes if the path ends with slashes.
+    set dir (string replace --regex '(.)/+$' '$1' "$dir")
 
-  function fzf-file-widget
+    # "-path \$dir'*/\\.*'" matches hidden files/folders inside $dir but not
+    # $dir itself, even if hidden.
     set -q FZF_CTRL_T_COMMAND; or set -l FZF_CTRL_T_COMMAND "
-    command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
-      -o -type f -print \
-      -o -type d -print \
-      -o -type l -print 2> /dev/null | sed 1d | cut -b3-"
-    eval "$FZF_CTRL_T_COMMAND | "(__fzfcmd)" -m $FZF_CTRL_T_OPTS > $TMPDIR/fzf.result"
-    and for i in (seq 20); commandline -i (cat $TMPDIR/fzf.result | __fzf_escape) 2> /dev/null; and break; sleep 0.1; end
+    command find -L \$dir -mindepth 1 \\( -path \$dir'*/\\.*' -o -fstype 'devfs' -o -fstype 'devtmpfs' \\) -prune \
+    -o -type f -print \
+    -o -type d -print \
+    -o -type l -print 2> /dev/null | sed 's#^\./##'"
+
+    set -q FZF_TMUX_HEIGHT; or set FZF_TMUX_HEIGHT 40%
+    begin
+      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT --reverse $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS"
+      eval "$FZF_CTRL_T_COMMAND | "(__fzfcmd)" -m" | while read -l r; set result $result $r; end
+    end
+    if [ -z "$result" ]
+      commandline -f repaint
+      return
+    end
+
+    if [ "$dir" != . ]
+      # Remove last token from commandline.
+      commandline -t ""
+    end
+    for i in $result
+      commandline -it -- (string escape $i)
+      commandline -it -- ' '
+    end
     commandline -f repaint
-    rm -f $TMPDIR/fzf.result
   end
 
-  function fzf-history-widget
-    history | eval (__fzfcmd) +s +m --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS > $TMPDIR/fzf.result
-    and commandline (cat $TMPDIR/fzf.result)
+  function fzf-history-widget -d "Show command history"
+    set -q FZF_TMUX_HEIGHT; or set FZF_TMUX_HEIGHT 40%
+    begin
+      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT $FZF_DEFAULT_OPTS +s --no-reverse --tiebreak=index $FZF_CTRL_R_OPTS +m"
+      history | eval (__fzfcmd) -q '(commandline)' | read -l result
+      and commandline -- $result
+    end
     commandline -f repaint
-    rm -f $TMPDIR/fzf.result
   end
 
-  function fzf-cd-widget
+  function fzf-cd-widget -d "Change directory"
     set -q FZF_ALT_C_COMMAND; or set -l FZF_ALT_C_COMMAND "
-    command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
-      -o -type d -print 2> /dev/null | sed 1d | cut -b3-"
-    # Fish hangs if the command before pipe redirects (2> /dev/null)
-    eval "$FZF_ALT_C_COMMAND | "(__fzfcmd)" +m $FZF_ALT_C_OPTS > $TMPDIR/fzf.result"
-    [ (cat $TMPDIR/fzf.result | wc -l) -gt 0 ]
-    and cd (cat $TMPDIR/fzf.result)
+    command find -L . \\( -path '*/\\.*' -o -fstype 'devfs' -o -fstype 'devtmpfs' \\) -prune \
+    -o -type d -print 2> /dev/null | sed 1d | cut -b3-"
+    set -q FZF_TMUX_HEIGHT; or set FZF_TMUX_HEIGHT 40%
+    begin
+      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT --reverse $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS"
+      eval "$FZF_ALT_C_COMMAND | "(__fzfcmd)" +m" | read -l result
+      [ "$result" ]; and cd $result
+    end
     commandline -f repaint
-    rm -f $TMPDIR/fzf.result
   end
 
   function __fzfcmd
-    set -q FZF_TMUX; or set FZF_TMUX 1
-
+    set -q FZF_TMUX; or set FZF_TMUX 0
+    set -q FZF_TMUX_HEIGHT; or set FZF_TMUX_HEIGHT 40%
     if [ $FZF_TMUX -eq 1 ]
-      if set -q FZF_TMUX_HEIGHT
-        echo "fzf-tmux -d$FZF_TMUX_HEIGHT"
-      else
-        echo "fzf-tmux -d40%"
-      end
+      echo "fzf-tmux -d$FZF_TMUX_HEIGHT"
     else
       echo "fzf"
     end
@@ -68,4 +85,3 @@ function fzf_key_bindings
     bind -M insert \ec fzf-cd-widget
   end
 end
-

shell/key-bindings.zsh

@@ -4,12 +4,12 @@ if [[ $- == *i* ]]; then
 
 # CTRL-T - Paste the selected file path(s) into the command line
 __fsel() {
-  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
     -o -type f -print \
     -o -type d -print \
-    -o -type l -print 2> /dev/null | sed 1d | cut -b3-"}"
+    -o -type l -print 2> /dev/null | cut -b3-"}"
   setopt localoptions pipefail 2> /dev/null
-  eval "$cmd | $(__fzfcmd) -m $FZF_CTRL_T_OPTS" | while read item; do
+  eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS" $(__fzfcmd) -m "$@" | while read item; do
     echo -n "${(q)item} "
   done
   local ret=$?
@@ -17,8 +17,13 @@ __fsel() {
   return $ret
 }
 
+__fzf_use_tmux__() {
+  [ -n "$TMUX_PANE" ] && [ "${FZF_TMUX:-0}" != 0 ] && [ ${LINES:-40} -gt 15 ]
+}
+
 __fzfcmd() {
-  [ ${FZF_TMUX:-1} -eq 1 ] && echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
+  __fzf_use_tmux__ &&
+    echo "fzf-tmux -d${FZF_TMUX_HEIGHT:-40%}" || echo "fzf"
 }
 
 fzf-file-widget() {
@@ -33,10 +38,10 @@ bindkey '^T' fzf-file-widget
 
 # ALT-C - cd into the selected directory
 fzf-cd-widget() {
-  local cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
+  local cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
     -o -type d -print 2> /dev/null | sed 1d | cut -b3-"}"
   setopt localoptions pipefail 2> /dev/null
-  cd "${$(eval "$cmd | $(__fzfcmd) +m $FZF_ALT_C_OPTS"):-.}"
+  cd "${$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS" $(__fzfcmd) +m):-.}"
   local ret=$?
   zle reset-prompt
   typeset -f zle-line-init >/dev/null && zle zle-line-init
@@ -49,7 +54,8 @@ bindkey '\ec' fzf-cd-widget
 fzf-history-widget() {
   local selected num
   setopt localoptions noglobsubst pipefail 2> /dev/null
-  selected=( $(fc -l 1 | eval "$(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS -q ${(q)LBUFFER}") )
+  selected=( $(fc -l 1 |
+    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS +s --tac --no-reverse -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS +m --query=${(q)LBUFFER}" $(__fzfcmd)) )
   local ret=$?
   if [ -n "$selected" ]; then
     num=$selected[1]

src/Makefile

@@ -33,17 +33,24 @@ endif
 
 all: fzf/$(BINARY)
 
+ifeq ($(GOOS),windows)
+release: fzf/$(BINARY32) fzf/$(BINARY64)
+	-cd fzf && cp $(BINARY32) $(RELEASE32).exe && zip $(RELEASE32).zip $(RELEASE32).exe
+	cd fzf && cp $(BINARY64) $(RELEASE64).exe && zip $(RELEASE64).zip $(RELEASE64).exe && \
+	rm -f $(RELEASE32).exe $(RELEASE64).exe
+else
 release: test fzf/$(BINARY32) fzf/$(BINARY64)
 	-cd fzf && cp $(BINARY32) $(RELEASE32) && tar -czf $(RELEASE32).tgz $(RELEASE32)
 	cd fzf && cp $(BINARY64) $(RELEASE64) && tar -czf $(RELEASE64).tgz $(RELEASE64) && \
 	rm -f $(RELEASE32) $(RELEASE64)
+endif
 
 $(SRCDIR):
 	mkdir -p $(shell dirname $(SRCDIR))
 	ln -s $(ROOTDIR) $(SRCDIR)
 
 deps: $(SRCDIR) $(SOURCES)
-	cd $(SRCDIR) && go get
+	cd $(SRCDIR) && go get -tags "$(TAGS)"
 
 android-build: $(SRCDIR)
 	cd $(SRCDIR) && GOARCH=arm GOARM=7 CGO_ENABLED=1 go get
@@ -52,7 +59,7 @@ android-build: $(SRCDIR)
 	rm -f $(RELEASEARM7)
 
 test: deps
-	SHELL=/bin/sh go test -v ./...
+	SHELL=/bin/sh GOOS=$(GOOS) go test -v -tags "$(TAGS)" ./...
 
 install: $(BINDIR)/fzf
 
@@ -63,10 +70,10 @@ clean:
 	cd fzf && rm -f fzf-*
 
 fzf/$(BINARY32): deps
-	cd fzf && GOARCH=386 CGO_ENABLED=1 go build -a -ldflags -w -tags "$(TAGS)" -o $(BINARY32)
+	cd fzf && GOARCH=386 CGO_ENABLED=1 go build -a -ldflags "-w -extldflags=$(LDFLAGS)" -tags "$(TAGS)" -o $(BINARY32)
 
 fzf/$(BINARY64): deps
-	cd fzf && go build -a -ldflags -w -tags "$(TAGS)" -o $(BINARY64)
+	cd fzf && go build -a -ldflags "-w -extldflags=$(LDFLAGS)" -tags "$(TAGS)" -o $(BINARY64)
 
 $(BINDIR)/fzf: fzf/$(BINARY) | $(BINDIR)
 	cp -f fzf/$(BINARY) $(BINDIR)

src/README.md

@@ -47,66 +47,40 @@ proportional to the number of CPU cores. On my MacBook Pro (Mid 2012), the new
 version was shown to be an order of magnitude faster on certain cases. It also
 starts much faster though the difference may not be noticeable.
 
-Differences with Ruby version
------------------------------
-
-The Go version is designed to be perfectly compatible with the previous Ruby
-version. The only behavioral difference is that the new version ignores the
-numeric argument to `--sort=N` option and always sorts the result regardless
-of the number of matches. The value was introduced to limit the response time
-of the query, but the Go version is blazingly fast (almost instant response
-even for 1M+ items) so I decided that it's no longer required.
-
-System requirements
--------------------
-
-Currently, prebuilt binaries are provided only for OS X and Linux. The install
-script will fall back to the legacy Ruby version on the other systems, but if
-you have Go 1.4 installed, you can try building it yourself.
-
-However, as pointed out in [golang.org/doc/install][req], the Go version may
-not run on CentOS/RHEL 5.x, and if that's the case, the install script will
-choose the Ruby version instead.
-
-The Go version depends on [ncurses][ncurses] and some Unix system calls, so it
-shouldn't run natively on Windows at the moment. But it won't be impossible to
-support Windows by falling back to a cross-platform alternative such as
-[termbox][termbox] only on Windows. If you're interested in making fzf work on
-Windows, please let me know.
-
 Build
 -----
 
+See [BUILD.md](../BUILD.md)
+
+Test
+----
+
+Unit tests can be run with `make test`. Integration tests are written in Ruby
+script that should be run on tmux.
+
 ```sh
-# Build fzf executables and tarballs
-make release
+# Unit tests
+make test
 
 # Install the executable to ../bin directory
 make install
 
-# Build executables and tarballs for Linux using Docker
-make linux
+# Integration tests
+ruby ../test/test_go.rb
 ```
 
-Contribution
-------------
-
-For the time being, I will not add or accept any new features until we can be
-sure that the implementation is stable and we have a sufficient number of test
-cases. However, fixes for obvious bugs and new test cases are welcome.
-
-I also care much about the performance of the implementation, so please make
-sure that your change does not result in performance regression. And please be
-noted that we don't have a quantitative measure of the performance yet.
-
 Third-party libraries used
 --------------------------
 
 - [ncurses][ncurses]
 - [mattn/go-runewidth](https://github.com/mattn/go-runewidth)
-    - Licensed under [MIT](http://mattn.mit-license.org/2013)
+    - Licensed under [MIT](http://mattn.mit-license.org)
 - [mattn/go-shellwords](https://github.com/mattn/go-shellwords)
-    - Licensed under [MIT](http://mattn.mit-license.org/2014)
+    - Licensed under [MIT](http://mattn.mit-license.org)
+- [mattn/go-isatty](https://github.com/mattn/go-isatty)
+    - Licensed under [MIT](http://mattn.mit-license.org)
+- [tcell](https://github.com/gdamore/tcell)
+    - Licensed under [Apache License 2.0](https://github.com/gdamore/tcell/blob/master/LICENSE)
 
 License
 -------
@@ -118,4 +92,4 @@ License
 [gil]:     http://en.wikipedia.org/wiki/Global_Interpreter_Lock
 [ncurses]: https://www.gnu.org/software/ncurses/
 [req]:     http://golang.org/doc/install
-[termbox]: https://github.com/nsf/termbox-go
+[tcell]:   https://github.com/gdamore/tcell

src/algo/algo.go

@@ -1,19 +1,91 @@
 package algo
 
+/*
+
+Algorithm
+---------
+
+FuzzyMatchV1 finds the first "fuzzy" occurrence of the pattern within the given
+text in O(n) time where n is the length of the text. Once the position of the
+last character is located, it traverses backwards to see if there's a shorter
+substring that matches the pattern.
+
+    a_____b___abc__  To find "abc"
+    *-----*-----*>   1. Forward scan
+             <***    2. Backward scan
+
+The algorithm is simple and fast, but as it only sees the first occurrence,
+it is not guaranteed to find the occurrence with the highest score.
+
+    a_____b__c__abc
+    *-----*--*  ***
+
+FuzzyMatchV2 implements a modified version of Smith-Waterman algorithm to find
+the optimal solution (highest score) according to the scoring criteria. Unlike
+the original algorithm, omission or mismatch of a character in the pattern is
+not allowed.
+
+Performance
+-----------
+
+The new V2 algorithm is slower than V1 as it examines all occurrences of the
+pattern instead of stopping immediately after finding the first one. The time
+complexity of the algorithm is O(nm) if a match is found and O(n) otherwise
+where n is the length of the item and m is the length of the pattern. Thus, the
+performance overhead may not be noticeable for a query with high selectivity.
+However, if the performance is more important than the quality of the result,
+you can still choose v1 algorithm with --algo=v1.
+
+Scoring criteria
+----------------
+
+- We prefer matches at special positions, such as the start of a word, or
+  uppercase character in camelCase words.
+
+- That is, we prefer an occurrence of the pattern with more characters
+  matching at special positions, even if the total match length is longer.
+    e.g. "fuzzyfinder" vs. "fuzzy-finder" on "ff"
+                            ````````````
+- Also, if the first character in the pattern appears at one of the special
+  positions, the bonus point for the position is multiplied by a constant
+  as it is extremely likely that the first character in the typed pattern
+  has more significance than the rest.
+    e.g. "fo-bar" vs. "foob-r" on "br"
+          ``````
+- But since fzf is still a fuzzy finder, not an acronym finder, we should also
+  consider the total length of the matched substring. This is why we have the
+  gap penalty. The gap penalty increases as the length of the gap (distance
+  between the matching characters) increases, so the effect of the bonus is
+  eventually cancelled at some point.
+    e.g. "fuzzyfinder" vs. "fuzzy-blurry-finder" on "ff"
+          ```````````
+- Consequently, it is crucial to find the right balance between the bonus
+  and the gap penalty. The parameters were chosen that the bonus is cancelled
+  when the gap size increases beyond 8 characters.
+
+- The bonus mechanism can have the undesirable side effect where consecutive
+  matches are ranked lower than the ones with gaps.
+    e.g. "foobar" vs. "foo-bar" on "foob"
+                       ```````
+- To correct this anomaly, we also give extra bonus point to each character
+  in a consecutive matching chunk.
+    e.g. "foobar" vs. "foo-bar" on "foob"
+          ``````
+- The amount of consecutive bonus is primarily determined by the bonus of the
+  first character in the chunk.
+    e.g. "foobar" vs. "out-of-bound" on "oob"
+                       ````````````
+*/
+
 import (
+	"fmt"
 	"strings"
 	"unicode"
 
 	"github.com/junegunn/fzf/src/util"
 )
 
-/*
- * String matching algorithms here do not use strings.ToLower to avoid
- * performance penalty. And they assume pattern runes are given in lowercase
- * letters when caseSensitive is false.
- *
- * In short: They try to do as little work as possible.
- */
+var DEBUG bool
 
 func indexAt(index int, max int, forward bool) int {
 	if forward {
@@ -22,16 +94,50 @@ func indexAt(index int, max int, forward bool) int {
 	return max - index - 1
 }
 
-// Result conatins the results of running a match function.
+// Result contains the results of running a match function.
 type Result struct {
+	// TODO int32 should suffice
 	Start int
 	End   int
-
-	// Items are basically sorted by the lengths of matched substrings.
-	// But we slightly adjust the score with bonus for better results.
-	Bonus int
+	Score int
 }
 
+const (
+	scoreMatch        = 16
+	scoreGapStart     = -3
+	scoreGapExtention = -1
+
+	// We prefer matches at the beginning of a word, but the bonus should not be
+	// too great to prevent the longer acronym matches from always winning over
+	// shorter fuzzy matches. The bonus point here was specifically chosen that
+	// the bonus is cancelled when the gap between the acronyms grows over
+	// 8 characters, which is approximately the average length of the words found
+	// in web2 dictionary and my file system.
+	bonusBoundary = scoreMatch / 2
+
+	// Although bonus point for non-word characters is non-contextual, we need it
+	// for computing bonus points for consecutive chunks starting with a non-word
+	// character.
+	bonusNonWord = scoreMatch / 2
+
+	// Edge-triggered bonus for matches in camelCase words.
+	// Compared to word-boundary case, they don't accompany single-character gaps
+	// (e.g. FooBar vs. foo-bar), so we deduct bonus point accordingly.
+	bonusCamel123 = bonusBoundary + scoreGapExtention
+
+	// Minimum bonus point given to characters in consecutive chunks.
+	// Note that bonus points for consecutive matches shouldn't have needed if we
+	// used fixed match score as in the original algorithm.
+	bonusConsecutive = -(scoreGapStart + scoreGapExtention)
+
+	// The first character in the typed pattern usually has more significance
+	// than the rest so it's important that it appears at special positions where
+	// bonus points are given. e.g. "to-go" vs. "ongoing" on "og" or on "ogo".
+	// The amount of the extra bonus should be limited so that the gap penalty is
+	// still respected.
+	bonusFirstCharMultiplier = 2
+)
+
 type charClass int
 
 const (
@@ -42,85 +148,374 @@ const (
 	charNumber
 )
 
-func evaluateBonus(caseSensitive bool, text util.Chars, pattern []rune, sidx int, eidx int) int {
-	var bonus int
-	pidx := 0
-	lenPattern := len(pattern)
-	consecutive := false
-	prevClass := charNonWord
-	for index := util.Max(0, sidx-1); index < eidx; index++ {
-		char := text.Get(index)
-		var class charClass
-		if unicode.IsLower(char) {
-			class = charLower
-		} else if unicode.IsUpper(char) {
-			class = charUpper
-		} else if unicode.IsLetter(char) {
-			class = charLetter
-		} else if unicode.IsNumber(char) {
-			class = charNumber
-		} else {
-			class = charNonWord
-		}
-
-		var point int
-		if prevClass == charNonWord && class != charNonWord {
-			// Word boundary
-			point = 2
-		} else if prevClass == charLower && class == charUpper ||
-			prevClass != charNumber && class == charNumber {
-			// camelCase letter123
-			point = 1
-		}
-		prevClass = class
-
-		if index >= sidx {
-			if !caseSensitive {
-				if char >= 'A' && char <= 'Z' {
-					char += 32
-				} else if char > unicode.MaxASCII {
-					char = unicode.To(unicode.LowerCase, char)
-				}
-			}
-			pchar := pattern[pidx]
-			if pchar == char {
-				// Boost bonus for the first character in the pattern
-				if pidx == 0 {
-					point *= 2
-				}
-				// Bonus to consecutive matching chars
-				if consecutive {
-					point++
-				}
-				bonus += point
-
-				if pidx++; pidx == lenPattern {
-					break
-				}
-				consecutive = true
-			} else {
-				consecutive = false
-			}
-		}
+func posArray(withPos bool, len int) *[]int {
+	if withPos {
+		pos := make([]int, 0, len)
+		return &pos
 	}
-	return bonus
+	return nil
 }
 
-// FuzzyMatch performs fuzzy-match
-func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
-	if len(pattern) == 0 {
-		return Result{0, 0, 0}
+func alloc16(offset int, slab *util.Slab, size int, clear bool) (int, []int16) {
+	if slab != nil && cap(slab.I16) > offset+size {
+		slice := slab.I16[offset : offset+size]
+		if clear {
+			for idx := range slice {
+				slice[idx] = 0
+			}
+		}
+		return offset + size, slice
+	}
+	return offset, make([]int16, size)
+}
+
+func alloc32(offset int, slab *util.Slab, size int, clear bool) (int, []int32) {
+	if slab != nil && cap(slab.I32) > offset+size {
+		slice := slab.I32[offset : offset+size]
+		if clear {
+			for idx := range slice {
+				slice[idx] = 0
+			}
+		}
+		return offset + size, slice
+	}
+	return offset, make([]int32, size)
+}
+
+func charClassOfAscii(char rune) charClass {
+	if char >= 'a' && char <= 'z' {
+		return charLower
+	} else if char >= 'A' && char <= 'Z' {
+		return charUpper
+	} else if char >= '0' && char <= '9' {
+		return charNumber
+	}
+	return charNonWord
+}
+
+func charClassOfNonAscii(char rune) charClass {
+	if unicode.IsLower(char) {
+		return charLower
+	} else if unicode.IsUpper(char) {
+		return charUpper
+	} else if unicode.IsNumber(char) {
+		return charNumber
+	} else if unicode.IsLetter(char) {
+		return charLetter
+	}
+	return charNonWord
+}
+
+func charClassOf(char rune) charClass {
+	if char <= unicode.MaxASCII {
+		return charClassOfAscii(char)
+	}
+	return charClassOfNonAscii(char)
+}
+
+func bonusFor(prevClass charClass, class charClass) int16 {
+	if prevClass == charNonWord && class != charNonWord {
+		// Word boundary
+		return bonusBoundary
+	} else if prevClass == charLower && class == charUpper ||
+		prevClass != charNumber && class == charNumber {
+		// camelCase letter123
+		return bonusCamel123
+	} else if class == charNonWord {
+		return bonusNonWord
+	}
+	return 0
+}
+
+func bonusAt(input util.Chars, idx int) int16 {
+	if idx == 0 {
+		return bonusBoundary
+	}
+	return bonusFor(charClassOf(input.Get(idx-1)), charClassOf(input.Get(idx)))
+}
+
+func normalizeRune(r rune) rune {
+	if r < 0x00C0 || r > 0x2184 {
+		return r
+	}
+
+	n := normalized[r]
+	if n > 0 {
+		return n
+	}
+	return r
+}
+
+// Algo functions make two assumptions
+// 1. "pattern" is given in lowercase if "caseSensitive" is false
+// 2. "pattern" is already normalized if "normalize" is true
+type Algo func(caseSensitive bool, normalize bool, forward bool, input util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int)
+
+func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	// Assume that pattern is given in lowercase if case-insensitive.
+	// First check if there's a match and calculate bonus for each position.
+	// If the input string is too long, consider finding the matching chars in
+	// this phase as well (non-optimal alignment).
+	N := input.Length()
+	M := len(pattern)
+	switch M {
+	case 0:
+		return Result{0, 0, 0}, posArray(withPos, M)
+	case 1:
+		return ExactMatchNaive(caseSensitive, normalize, forward, input, pattern[0:1], withPos, slab)
+	}
+
+	// Since O(nm) algorithm can be prohibitively expensive for large input,
+	// we fall back to the greedy algorithm.
+	if slab != nil && N*M > cap(slab.I16) {
+		return FuzzyMatchV1(caseSensitive, normalize, forward, input, pattern, withPos, slab)
+	}
+
+	// Reuse pre-allocated integer slice to avoid unnecessary sweeping of garbages
+	offset16 := 0
+	offset32 := 0
+	// Bonus point for each position
+	offset16, B := alloc16(offset16, slab, N, false)
+	// The first occurrence of each character in the pattern
+	offset32, F := alloc32(offset32, slab, M, false)
+	// Rune array
+	offset32, T := alloc32(offset32, slab, N, false)
+
+	// Phase 1. Check if there's a match and calculate bonus for each point
+	pidx, lastIdx, prevClass := 0, 0, charNonWord
+	for idx := 0; idx < N; idx++ {
+		char := input.Get(idx)
+		var class charClass
+		if char <= unicode.MaxASCII {
+			class = charClassOfAscii(char)
+		} else {
+			class = charClassOfNonAscii(char)
+		}
+
+		if !caseSensitive && class == charUpper {
+			if char <= unicode.MaxASCII {
+				char += 32
+			} else {
+				char = unicode.To(unicode.LowerCase, char)
+			}
+		}
+
+		if normalize {
+			char = normalizeRune(char)
+		}
+
+		T[idx] = char
+		B[idx] = bonusFor(prevClass, class)
+		prevClass = class
+
+		if pidx < M {
+			if char == pattern[pidx] {
+				lastIdx = idx
+				F[pidx] = int32(idx)
+				pidx++
+			}
+		} else {
+			if char == pattern[M-1] {
+				lastIdx = idx
+			}
+		}
+	}
+	if pidx != M {
+		return Result{-1, -1, 0}, nil
+	}
+
+	// Phase 2. Fill in score matrix (H)
+	// Unlike the original algorithm, we do not allow omission.
+	width := lastIdx - int(F[0]) + 1
+	offset16, H := alloc16(offset16, slab, width*M, false)
+
+	// Possible length of consecutive chunk at each position.
+	offset16, C := alloc16(offset16, slab, width*M, false)
+
+	maxScore, maxScorePos := int16(0), 0
+	for i := 0; i < M; i++ {
+		I := i * width
+		inGap := false
+		for j := int(F[i]); j <= lastIdx; j++ {
+			j0 := j - int(F[0])
+			var s1, s2, consecutive int16
+
+			if j > int(F[i]) {
+				if inGap {
+					s2 = H[I+j0-1] + scoreGapExtention
+				} else {
+					s2 = H[I+j0-1] + scoreGapStart
+				}
+			}
+
+			if pattern[i] == T[j] {
+				var diag int16
+				if i > 0 && j0 > 0 {
+					diag = H[I-width+j0-1]
+				}
+				s1 = diag + scoreMatch
+				b := B[j]
+				if i > 0 {
+					// j > 0 if i > 0
+					consecutive = C[I-width+j0-1] + 1
+					// Break consecutive chunk
+					if b == bonusBoundary {
+						consecutive = 1
+					} else if consecutive > 1 {
+						b = util.Max16(b, util.Max16(bonusConsecutive, B[j-int(consecutive)+1]))
+					}
+				} else {
+					consecutive = 1
+					b *= bonusFirstCharMultiplier
+				}
+				if s1+b < s2 {
+					s1 += B[j]
+					consecutive = 0
+				} else {
+					s1 += b
+				}
+			}
+			C[I+j0] = consecutive
+
+			inGap = s1 < s2
+			score := util.Max16(util.Max16(s1, s2), 0)
+			if i == M-1 && (forward && score > maxScore || !forward && score >= maxScore) {
+				maxScore, maxScorePos = score, j
+			}
+			H[I+j0] = score
+		}
+
+		if DEBUG {
+			if i == 0 {
+				fmt.Print("  ")
+				for j := int(F[i]); j <= lastIdx; j++ {
+					fmt.Printf(" " + string(input.Get(j)) + " ")
+				}
+				fmt.Println()
+			}
+			fmt.Print(string(pattern[i]) + " ")
+			for idx := int(F[0]); idx < int(F[i]); idx++ {
+				fmt.Print(" 0 ")
+			}
+			for idx := int(F[i]); idx <= lastIdx; idx++ {
+				fmt.Printf("%2d ", H[i*width+idx-int(F[0])])
+			}
+			fmt.Println()
+
+			fmt.Print("  ")
+			for idx, p := range C[I : I+width] {
+				if idx+int(F[0]) < int(F[i]) {
+					p = 0
+				}
+				fmt.Printf("%2d ", p)
+			}
+			fmt.Println()
+		}
+	}
+
+	// Phase 3. (Optional) Backtrace to find character positions
+	pos := posArray(withPos, M)
+	j := int(F[0])
+	if withPos {
+		i := M - 1
+		j = maxScorePos
+		preferMatch := true
+		for {
+			I := i * width
+			j0 := j - int(F[0])
+			s := H[I+j0]
+
+			var s1, s2 int16
+			if i > 0 && j >= int(F[i]) {
+				s1 = H[I-width+j0-1]
+			}
+			if j > int(F[i]) {
+				s2 = H[I+j0-1]
+			}
+
+			if s > s1 && (s > s2 || s == s2 && preferMatch) {
+				*pos = append(*pos, j)
+				if i == 0 {
+					break
+				}
+				i--
+			}
+			preferMatch = C[I+j0] > 1 || I+width+j0+1 < len(C) && C[I+width+j0+1] > 0
+			j--
+		}
+	}
+	// Start offset we return here is only relevant when begin tiebreak is used.
+	// However finding the accurate offset requires backtracking, and we don't
+	// want to pay extra cost for the option that has lost its importance.
+	return Result{j, maxScorePos + 1, int(maxScore)}, pos
+}
+
+// Implement the same sorting criteria as V2
+func calculateScore(caseSensitive bool, normalize bool, text util.Chars, pattern []rune, sidx int, eidx int, withPos bool) (int, *[]int) {
+	pidx, score, inGap, consecutive, firstBonus := 0, 0, false, 0, int16(0)
+	pos := posArray(withPos, len(pattern))
+	prevClass := charNonWord
+	if sidx > 0 {
+		prevClass = charClassOf(text.Get(sidx - 1))
+	}
+	for idx := sidx; idx < eidx; idx++ {
+		char := text.Get(idx)
+		class := charClassOf(char)
+		if !caseSensitive {
+			if char >= 'A' && char <= 'Z' {
+				char += 32
+			} else if char > unicode.MaxASCII {
+				char = unicode.To(unicode.LowerCase, char)
+			}
+		}
+		// pattern is already normalized
+		if normalize {
+			char = normalizeRune(char)
+		}
+		if char == pattern[pidx] {
+			if withPos {
+				*pos = append(*pos, idx)
+			}
+			score += scoreMatch
+			bonus := bonusFor(prevClass, class)
+			if consecutive == 0 {
+				firstBonus = bonus
+			} else {
+				// Break consecutive chunk
+				if bonus == bonusBoundary {
+					firstBonus = bonus
+				}
+				bonus = util.Max16(util.Max16(bonus, firstBonus), bonusConsecutive)
+			}
+			if pidx == 0 {
+				score += int(bonus * bonusFirstCharMultiplier)
+			} else {
+				score += int(bonus)
+			}
+			inGap = false
+			consecutive++
+			pidx++
+		} else {
+			if inGap {
+				score += scoreGapExtention
+			} else {
+				score += scoreGapStart
+			}
+			inGap = true
+			consecutive = 0
+			firstBonus = 0
+		}
+		prevClass = class
+	}
+	return score, pos
+}
+
+// FuzzyMatchV1 performs fuzzy-match
+func FuzzyMatchV1(caseSensitive bool, normalize bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	if len(pattern) == 0 {
+		return Result{0, 0, 0}, nil
 	}
 
-	// 0. (FIXME) How to find the shortest match?
-	//    a_____b__c__abc
-	//    ^^^^^^^^^^  ^^^
-	// 1. forward scan (abc)
-	//   *-----*-----*>
-	//   a_____b___abc__
-	// 2. reverse scan (cba)
-	//   a_____b___abc__
-	//            <***
 	pidx := 0
 	sidx := -1
 	eidx := -1
@@ -142,6 +537,9 @@ func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []run
 				char = unicode.To(unicode.LowerCase, char)
 			}
 		}
+		if normalize {
+			char = normalizeRune(char)
+		}
 		pchar := pattern[indexAt(pidx, lenPattern, forward)]
 		if char == pchar {
 			if sidx < 0 {
@@ -157,7 +555,8 @@ func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []run
 	if sidx >= 0 && eidx >= 0 {
 		pidx--
 		for index := eidx - 1; index >= sidx; index-- {
-			char := text.Get(indexAt(index, lenRunes, forward))
+			tidx := indexAt(index, lenRunes, forward)
+			char := text.Get(tidx)
 			if !caseSensitive {
 				if char >= 'A' && char <= 'Z' {
 					char += 32
@@ -166,7 +565,8 @@ func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []run
 				}
 			}
 
-			pchar := pattern[indexAt(pidx, lenPattern, forward)]
+			pidx_ := indexAt(pidx, lenPattern, forward)
+			pchar := pattern[pidx_]
 			if char == pchar {
 				if pidx--; pidx < 0 {
 					sidx = index
@@ -175,16 +575,14 @@ func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []run
 			}
 		}
 
-		// Calculate the bonus. This can't be done at the same time as the
-		// pattern scan above because 'forward' may be false.
 		if !forward {
 			sidx, eidx = lenRunes-eidx, lenRunes-sidx
 		}
 
-		return Result{sidx, eidx,
-			evaluateBonus(caseSensitive, text, pattern, sidx, eidx)}
+		score, pos := calculateScore(caseSensitive, normalize, text, pattern, sidx, eidx, withPos)
+		return Result{sidx, eidx, score}, pos
 	}
-	return Result{-1, -1, 0}
+	return Result{-1, -1, 0}, nil
 }
 
 // ExactMatchNaive is a basic string searching algorithm that handles case
@@ -192,23 +590,28 @@ func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []run
 // of strings.ToLower + strings.Index for typical fzf use cases where input
 // strings and patterns are not very long.
 //
-// We might try to implement better algorithms in the future:
-// http://en.wikipedia.org/wiki/String_searching_algorithm
-func ExactMatchNaive(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
+// Since 0.15.0, this function searches for the match with the highest
+// bonus point, instead of stopping immediately after finding the first match.
+// The solution is much cheaper since there is only one possible alignment of
+// the pattern.
+func ExactMatchNaive(caseSensitive bool, normalize bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
 	if len(pattern) == 0 {
-		return Result{0, 0, 0}
+		return Result{0, 0, 0}, nil
 	}
 
 	lenRunes := text.Length()
 	lenPattern := len(pattern)
 
 	if lenRunes < lenPattern {
-		return Result{-1, -1, 0}
+		return Result{-1, -1, 0}, nil
 	}
 
+	// For simplicity, only look at the bonus at the first character position
 	pidx := 0
+	bestPos, bonus, bestBonus := -1, int16(0), int16(-1)
 	for index := 0; index < lenRunes; index++ {
-		char := text.Get(indexAt(index, lenRunes, forward))
+		index_ := indexAt(index, lenRunes, forward)
+		char := text.Get(index_)
 		if !caseSensitive {
 			if char >= 'A' && char <= 'Z' {
 				char += 32
@@ -216,33 +619,54 @@ func ExactMatchNaive(caseSensitive bool, forward bool, text util.Chars, pattern
 				char = unicode.To(unicode.LowerCase, char)
 			}
 		}
-		pchar := pattern[indexAt(pidx, lenPattern, forward)]
+		if normalize {
+			char = normalizeRune(char)
+		}
+		pidx_ := indexAt(pidx, lenPattern, forward)
+		pchar := pattern[pidx_]
 		if pchar == char {
+			if pidx_ == 0 {
+				bonus = bonusAt(text, index_)
+			}
 			pidx++
 			if pidx == lenPattern {
-				var sidx, eidx int
-				if forward {
-					sidx = index - lenPattern + 1
-					eidx = index + 1
-				} else {
-					sidx = lenRunes - (index + 1)
-					eidx = lenRunes - (index - lenPattern + 1)
+				if bonus > bestBonus {
+					bestPos, bestBonus = index, bonus
 				}
-				return Result{sidx, eidx,
-					evaluateBonus(caseSensitive, text, pattern, sidx, eidx)}
+				if bonus == bonusBoundary {
+					break
+				}
+				index -= pidx - 1
+				pidx, bonus = 0, 0
 			}
 		} else {
 			index -= pidx
-			pidx = 0
+			pidx, bonus = 0, 0
 		}
 	}
-	return Result{-1, -1, 0}
+	if bestPos >= 0 {
+		var sidx, eidx int
+		if forward {
+			sidx = bestPos - lenPattern + 1
+			eidx = bestPos + 1
+		} else {
+			sidx = lenRunes - (bestPos + 1)
+			eidx = lenRunes - (bestPos - lenPattern + 1)
+		}
+		score, _ := calculateScore(caseSensitive, normalize, text, pattern, sidx, eidx, false)
+		return Result{sidx, eidx, score}, nil
+	}
+	return Result{-1, -1, 0}, nil
 }
 
 // PrefixMatch performs prefix-match
-func PrefixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
+func PrefixMatch(caseSensitive bool, normalize bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	if len(pattern) == 0 {
+		return Result{0, 0, 0}, nil
+	}
+
 	if text.Length() < len(pattern) {
-		return Result{-1, -1, 0}
+		return Result{-1, -1, 0}, nil
 	}
 
 	for index, r := range pattern {
@@ -250,21 +674,28 @@ func PrefixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []ru
 		if !caseSensitive {
 			char = unicode.ToLower(char)
 		}
+		if normalize {
+			char = normalizeRune(char)
+		}
 		if char != r {
-			return Result{-1, -1, 0}
+			return Result{-1, -1, 0}, nil
 		}
 	}
 	lenPattern := len(pattern)
-	return Result{0, lenPattern,
-		evaluateBonus(caseSensitive, text, pattern, 0, lenPattern)}
+	score, _ := calculateScore(caseSensitive, normalize, text, pattern, 0, lenPattern, false)
+	return Result{0, lenPattern, score}, nil
 }
 
 // SuffixMatch performs suffix-match
-func SuffixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
-	trimmedLen := text.Length() - text.TrailingWhitespaces()
+func SuffixMatch(caseSensitive bool, normalize bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	lenRunes := text.Length()
+	trimmedLen := lenRunes - text.TrailingWhitespaces()
+	if len(pattern) == 0 {
+		return Result{trimmedLen, trimmedLen, 0}, nil
+	}
 	diff := trimmedLen - len(pattern)
 	if diff < 0 {
-		return Result{-1, -1, 0}
+		return Result{-1, -1, 0}, nil
 	}
 
 	for index, r := range pattern {
@@ -272,29 +703,49 @@ func SuffixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []ru
 		if !caseSensitive {
 			char = unicode.ToLower(char)
 		}
+		if normalize {
+			char = normalizeRune(char)
+		}
 		if char != r {
-			return Result{-1, -1, 0}
+			return Result{-1, -1, 0}, nil
 		}
 	}
 	lenPattern := len(pattern)
 	sidx := trimmedLen - lenPattern
 	eidx := trimmedLen
-	return Result{sidx, eidx,
-		evaluateBonus(caseSensitive, text, pattern, sidx, eidx)}
+	score, _ := calculateScore(caseSensitive, normalize, text, pattern, sidx, eidx, false)
+	return Result{sidx, eidx, score}, nil
 }
 
 // EqualMatch performs equal-match
-func EqualMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
-	// Note: EqualMatch always return a zero bonus.
-	if text.Length() != len(pattern) {
-		return Result{-1, -1, 0}
+func EqualMatch(caseSensitive bool, normalize bool, forward bool, text util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	lenPattern := len(pattern)
+	if text.Length() != lenPattern {
+		return Result{-1, -1, 0}, nil
 	}
-	runesStr := text.ToString()
-	if !caseSensitive {
-		runesStr = strings.ToLower(runesStr)
+	match := true
+	if normalize {
+		runes := text.ToRunes()
+		for idx, pchar := range pattern {
+			char := runes[idx]
+			if !caseSensitive {
+				char = unicode.To(unicode.LowerCase, char)
+			}
+			if normalizeRune(pchar) != normalizeRune(char) {
+				match = false
+				break
+			}
+		}
+	} else {
+		runesStr := text.ToString()
+		if !caseSensitive {
+			runesStr = strings.ToLower(runesStr)
+		}
+		match = runesStr == string(pattern)
 	}
-	if runesStr == string(pattern) {
-		return Result{0, len(pattern), 0}
+	if match {
+		return Result{0, lenPattern, (scoreMatch+bonusBoundary)*lenPattern +
+			(bonusFirstCharMultiplier-1)*bonusBoundary}, nil
 	}
-	return Result{-1, -1, 0}
+	return Result{-1, -1, 0}, nil
 }

src/algo/algo_test.go

@@ -1,97 +1,185 @@
 package algo
 
 import (
+	"math"
+	"sort"
 	"strings"
 	"testing"
 
 	"github.com/junegunn/fzf/src/util"
 )
 
-func assertMatch(t *testing.T, fun func(bool, bool, util.Chars, []rune) Result, caseSensitive, forward bool, input, pattern string, sidx int, eidx int, bonus int) {
+func assertMatch(t *testing.T, fun Algo, caseSensitive, forward bool, input, pattern string, sidx int, eidx int, score int) {
+	assertMatch2(t, fun, caseSensitive, false, forward, input, pattern, sidx, eidx, score)
+}
+
+func assertMatch2(t *testing.T, fun Algo, caseSensitive, normalize, forward bool, input, pattern string, sidx int, eidx int, score int) {
 	if !caseSensitive {
 		pattern = strings.ToLower(pattern)
 	}
-	res := fun(caseSensitive, forward, util.RunesToChars([]rune(input)), []rune(pattern))
-	if res.Start != sidx {
-		t.Errorf("Invalid start index: %d (expected: %d, %s / %s)", res.Start, sidx, input, pattern)
+	res, pos := fun(caseSensitive, normalize, forward, util.RunesToChars([]rune(input)), []rune(pattern), true, nil)
+	var start, end int
+	if pos == nil || len(*pos) == 0 {
+		start = res.Start
+		end = res.End
+	} else {
+		sort.Ints(*pos)
+		start = (*pos)[0]
+		end = (*pos)[len(*pos)-1] + 1
 	}
-	if res.End != eidx {
-		t.Errorf("Invalid end index: %d (expected: %d, %s / %s)", res.End, eidx, input, pattern)
+	if start != sidx {
+		t.Errorf("Invalid start index: %d (expected: %d, %s / %s)", start, sidx, input, pattern)
 	}
-	if res.Bonus != bonus {
-		t.Errorf("Invalid bonus: %d (expected: %d, %s / %s)", res.Bonus, bonus, input, pattern)
+	if end != eidx {
+		t.Errorf("Invalid end index: %d (expected: %d, %s / %s)", end, eidx, input, pattern)
+	}
+	if res.Score != score {
+		t.Errorf("Invalid score: %d (expected: %d, %s / %s)", res.Score, score, input, pattern)
 	}
 }
 
 func TestFuzzyMatch(t *testing.T) {
-	assertMatch(t, FuzzyMatch, false, true, "fooBarbaz", "oBZ", 2, 9, 2)
-	assertMatch(t, FuzzyMatch, false, true, "foo bar baz", "fbb", 0, 9, 8)
-	assertMatch(t, FuzzyMatch, false, true, "/AutomatorDocument.icns", "rdoc", 9, 13, 4)
-	assertMatch(t, FuzzyMatch, false, true, "/man1/zshcompctl.1", "zshc", 6, 10, 7)
-	assertMatch(t, FuzzyMatch, false, true, "/.oh-my-zsh/cache", "zshc", 8, 13, 8)
-	assertMatch(t, FuzzyMatch, false, true, "ab0123 456", "12356", 3, 10, 3)
-	assertMatch(t, FuzzyMatch, false, true, "abc123 456", "12356", 3, 10, 5)
+	for _, fn := range []Algo{FuzzyMatchV1, FuzzyMatchV2} {
+		for _, forward := range []bool{true, false} {
+			assertMatch(t, fn, false, forward, "fooBarbaz1", "oBZ", 2, 9,
+				scoreMatch*3+bonusCamel123+scoreGapStart+scoreGapExtention*3)
+			assertMatch(t, fn, false, forward, "foo bar baz", "fbb", 0, 9,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+					bonusBoundary*2+2*scoreGapStart+4*scoreGapExtention)
+			assertMatch(t, fn, false, forward, "/AutomatorDocument.icns", "rdoc", 9, 13,
+				scoreMatch*4+bonusCamel123+bonusConsecutive*2)
+			assertMatch(t, fn, false, forward, "/man1/zshcompctl.1", "zshc", 6, 10,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3)
+			assertMatch(t, fn, false, forward, "/.oh-my-zsh/cache", "zshc", 8, 13,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3+scoreGapStart)
+			assertMatch(t, fn, false, forward, "ab0123 456", "12356", 3, 10,
+				scoreMatch*5+bonusConsecutive*3+scoreGapStart+scoreGapExtention)
+			assertMatch(t, fn, false, forward, "abc123 456", "12356", 3, 10,
+				scoreMatch*5+bonusCamel123*bonusFirstCharMultiplier+bonusCamel123*2+bonusConsecutive+scoreGapStart+scoreGapExtention)
+			assertMatch(t, fn, false, forward, "foo/bar/baz", "fbb", 0, 9,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+					bonusBoundary*2+2*scoreGapStart+4*scoreGapExtention)
+			assertMatch(t, fn, false, forward, "fooBarBaz", "fbb", 0, 7,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+					bonusCamel123*2+2*scoreGapStart+2*scoreGapExtention)
+			assertMatch(t, fn, false, forward, "foo barbaz", "fbb", 0, 8,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary+
+					scoreGapStart*2+scoreGapExtention*3)
+			assertMatch(t, fn, false, forward, "fooBar Baz", "foob", 0, 4,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3)
+			assertMatch(t, fn, false, forward, "xFoo-Bar Baz", "foo-b", 1, 6,
+				scoreMatch*5+bonusCamel123*bonusFirstCharMultiplier+bonusCamel123*2+
+					bonusNonWord+bonusBoundary)
 
-	assertMatch(t, FuzzyMatch, false, true, "foo/bar/baz", "fbb", 0, 9, 8)
-	assertMatch(t, FuzzyMatch, false, true, "fooBarBaz", "fbb", 0, 7, 6)
-	assertMatch(t, FuzzyMatch, false, true, "foo barbaz", "fbb", 0, 8, 6)
-	assertMatch(t, FuzzyMatch, false, true, "fooBar Baz", "foob", 0, 4, 8)
-	assertMatch(t, FuzzyMatch, true, true, "fooBarbaz", "oBZ", -1, -1, 0)
-	assertMatch(t, FuzzyMatch, true, true, "fooBarbaz", "oBz", 2, 9, 2)
-	assertMatch(t, FuzzyMatch, true, true, "Foo Bar Baz", "fbb", -1, -1, 0)
-	assertMatch(t, FuzzyMatch, true, true, "Foo/Bar/Baz", "FBB", 0, 9, 8)
-	assertMatch(t, FuzzyMatch, true, true, "FooBarBaz", "FBB", 0, 7, 6)
-	assertMatch(t, FuzzyMatch, true, true, "foo BarBaz", "fBB", 0, 8, 7)
-	assertMatch(t, FuzzyMatch, true, true, "FooBar Baz", "FooB", 0, 4, 8)
-	assertMatch(t, FuzzyMatch, true, true, "fooBarbaz", "fooBarbazz", -1, -1, 0)
+			assertMatch(t, fn, true, forward, "fooBarbaz", "oBz", 2, 9,
+				scoreMatch*3+bonusCamel123+scoreGapStart+scoreGapExtention*3)
+			assertMatch(t, fn, true, forward, "Foo/Bar/Baz", "FBB", 0, 9,
+				scoreMatch*3+bonusBoundary*(bonusFirstCharMultiplier+2)+
+					scoreGapStart*2+scoreGapExtention*4)
+			assertMatch(t, fn, true, forward, "FooBarBaz", "FBB", 0, 7,
+				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+bonusCamel123*2+
+					scoreGapStart*2+scoreGapExtention*2)
+			assertMatch(t, fn, true, forward, "FooBar Baz", "FooB", 0, 4,
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*2+
+					util.Max(bonusCamel123, bonusBoundary))
+
+			// Consecutive bonus updated
+			assertMatch(t, fn, true, forward, "foo-bar", "o-ba", 2, 6,
+				scoreMatch*4+bonusBoundary*3)
+
+			// Non-match
+			assertMatch(t, fn, true, forward, "fooBarbaz", "oBZ", -1, -1, 0)
+			assertMatch(t, fn, true, forward, "Foo Bar Baz", "fbb", -1, -1, 0)
+			assertMatch(t, fn, true, forward, "fooBarbaz", "fooBarbazz", -1, -1, 0)
+		}
+	}
 }
 
 func TestFuzzyMatchBackward(t *testing.T) {
-	assertMatch(t, FuzzyMatch, false, true, "foobar fb", "fb", 0, 4, 4)
-	assertMatch(t, FuzzyMatch, false, false, "foobar fb", "fb", 7, 9, 5)
+	assertMatch(t, FuzzyMatchV1, false, true, "foobar fb", "fb", 0, 4,
+		scoreMatch*2+bonusBoundary*bonusFirstCharMultiplier+
+			scoreGapStart+scoreGapExtention)
+	assertMatch(t, FuzzyMatchV1, false, false, "foobar fb", "fb", 7, 9,
+		scoreMatch*2+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary)
 }
 
 func TestExactMatchNaive(t *testing.T) {
 	for _, dir := range []bool{true, false} {
-		assertMatch(t, ExactMatchNaive, false, dir, "fooBarbaz", "oBA", 2, 5, 3)
 		assertMatch(t, ExactMatchNaive, true, dir, "fooBarbaz", "oBA", -1, -1, 0)
 		assertMatch(t, ExactMatchNaive, true, dir, "fooBarbaz", "fooBarbazz", -1, -1, 0)
 
-		assertMatch(t, ExactMatchNaive, false, dir, "/AutomatorDocument.icns", "rdoc", 9, 13, 4)
-		assertMatch(t, ExactMatchNaive, false, dir, "/man1/zshcompctl.1", "zshc", 6, 10, 7)
-		assertMatch(t, ExactMatchNaive, false, dir, "/.oh-my-zsh/cache", "zsh/c", 8, 13, 10)
+		assertMatch(t, ExactMatchNaive, false, dir, "fooBarbaz", "oBA", 2, 5,
+			scoreMatch*3+bonusCamel123+bonusConsecutive)
+		assertMatch(t, ExactMatchNaive, false, dir, "/AutomatorDocument.icns", "rdoc", 9, 13,
+			scoreMatch*4+bonusCamel123+bonusConsecutive*2)
+		assertMatch(t, ExactMatchNaive, false, dir, "/man1/zshcompctl.1", "zshc", 6, 10,
+			scoreMatch*4+bonusBoundary*(bonusFirstCharMultiplier+3))
+		assertMatch(t, ExactMatchNaive, false, dir, "/.oh-my-zsh/cache", "zsh/c", 8, 13,
+			scoreMatch*5+bonusBoundary*(bonusFirstCharMultiplier+4))
 	}
 }
 
 func TestExactMatchNaiveBackward(t *testing.T) {
-	assertMatch(t, ExactMatchNaive, false, true, "foobar foob", "oo", 1, 3, 1)
-	assertMatch(t, ExactMatchNaive, false, false, "foobar foob", "oo", 8, 10, 1)
+	assertMatch(t, ExactMatchNaive, false, true, "foobar foob", "oo", 1, 3,
+		scoreMatch*2+bonusConsecutive)
+	assertMatch(t, ExactMatchNaive, false, false, "foobar foob", "oo", 8, 10,
+		scoreMatch*2+bonusConsecutive)
 }
 
 func TestPrefixMatch(t *testing.T) {
+	score := (scoreMatch+bonusBoundary)*3 + bonusBoundary*(bonusFirstCharMultiplier-1)
+
 	for _, dir := range []bool{true, false} {
 		assertMatch(t, PrefixMatch, true, dir, "fooBarbaz", "Foo", -1, -1, 0)
 		assertMatch(t, PrefixMatch, false, dir, "fooBarBaz", "baz", -1, -1, 0)
-		assertMatch(t, PrefixMatch, false, dir, "fooBarbaz", "Foo", 0, 3, 6)
-		assertMatch(t, PrefixMatch, false, dir, "foOBarBaZ", "foo", 0, 3, 7)
-		assertMatch(t, PrefixMatch, false, dir, "f-oBarbaz", "f-o", 0, 3, 8)
+		assertMatch(t, PrefixMatch, false, dir, "fooBarbaz", "Foo", 0, 3, score)
+		assertMatch(t, PrefixMatch, false, dir, "foOBarBaZ", "foo", 0, 3, score)
+		assertMatch(t, PrefixMatch, false, dir, "f-oBarbaz", "f-o", 0, 3, score)
 	}
 }
 
 func TestSuffixMatch(t *testing.T) {
 	for _, dir := range []bool{true, false} {
-		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz", "Foo", -1, -1, 0)
-		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz", "baz", 6, 9, 2)
-		assertMatch(t, SuffixMatch, false, dir, "fooBarBaZ", "baz", 6, 9, 5)
 		assertMatch(t, SuffixMatch, true, dir, "fooBarbaz", "Baz", -1, -1, 0)
+		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz", "Foo", -1, -1, 0)
+
+		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz", "baz", 6, 9,
+			scoreMatch*3+bonusConsecutive*2)
+		assertMatch(t, SuffixMatch, false, dir, "fooBarBaZ", "baz", 6, 9,
+			(scoreMatch+bonusCamel123)*3+bonusCamel123*(bonusFirstCharMultiplier-1))
 	}
 }
 
 func TestEmptyPattern(t *testing.T) {
 	for _, dir := range []bool{true, false} {
-		assertMatch(t, FuzzyMatch, true, dir, "foobar", "", 0, 0, 0)
+		assertMatch(t, FuzzyMatchV1, true, dir, "foobar", "", 0, 0, 0)
+		assertMatch(t, FuzzyMatchV2, true, dir, "foobar", "", 0, 0, 0)
 		assertMatch(t, ExactMatchNaive, true, dir, "foobar", "", 0, 0, 0)
 		assertMatch(t, PrefixMatch, true, dir, "foobar", "", 0, 0, 0)
 		assertMatch(t, SuffixMatch, true, dir, "foobar", "", 6, 6, 0)
 	}
 }
+
+func TestNormalize(t *testing.T) {
+	caseSensitive := false
+	normalize := true
+	forward := true
+	test := func(input, pattern string, sidx, eidx, score int, funs ...Algo) {
+		for _, fun := range funs {
+			assertMatch2(t, fun, caseSensitive, normalize, forward,
+				input, pattern, sidx, eidx, score)
+		}
+	}
+	test("Só Danço Samba", "So", 0, 2, 56, FuzzyMatchV1, FuzzyMatchV2, PrefixMatch, ExactMatchNaive)
+	test("Só Danço Samba", "sodc", 0, 7, 89, FuzzyMatchV1, FuzzyMatchV2)
+	test("Danço", "danco", 0, 5, 128, FuzzyMatchV1, FuzzyMatchV2, PrefixMatch, SuffixMatch, ExactMatchNaive, EqualMatch)
+}
+
+func TestLongString(t *testing.T) {
+	bytes := make([]byte, math.MaxUint16*2)
+	for i := range bytes {
+		bytes[i] = 'x'
+	}
+	bytes[math.MaxUint16] = 'z'
+	assertMatch(t, FuzzyMatchV2, true, true, string(bytes), "zx", math.MaxUint16, math.MaxUint16+2, scoreMatch*2+bonusConsecutive)
+}

src/algo/normalize.go

@@ -0,0 +1,424 @@
+// Normalization of latin script letters
+// Reference: http://www.unicode.org/Public/UCD/latest/ucd/Index.txt
+
+package algo
+
+var normalized map[rune]rune = map[rune]rune{
+	0x00E1: 'a', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0103: 'a', //  WITH BREVE, LATIN SMALL LETTER
+	0x01CE: 'a', //  WITH CARON, LATIN SMALL LETTER
+	0x00E2: 'a', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x00E4: 'a', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x0227: 'a', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1EA1: 'a', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0201: 'a', //  WITH DOUBLE GRAVE, LATIN SMALL LETTER
+	0x00E0: 'a', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1EA3: 'a', //  WITH HOOK ABOVE, LATIN SMALL LETTER
+	0x0203: 'a', //  WITH INVERTED BREVE, LATIN SMALL LETTER
+	0x0101: 'a', //  WITH MACRON, LATIN SMALL LETTER
+	0x0105: 'a', //  WITH OGONEK, LATIN SMALL LETTER
+	0x1E9A: 'a', //  WITH RIGHT HALF RING, LATIN SMALL LETTER
+	0x00E5: 'a', //  WITH RING ABOVE, LATIN SMALL LETTER
+	0x1E01: 'a', //  WITH RING BELOW, LATIN SMALL LETTER
+	0x00E3: 'a', //  WITH TILDE, LATIN SMALL LETTER
+	0x0363: 'a', // , COMBINING LATIN SMALL LETTER
+	0x0250: 'a', // , LATIN SMALL LETTER TURNED
+	0x1E03: 'b', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E05: 'b', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0253: 'b', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E07: 'b', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x0180: 'b', //  WITH STROKE, LATIN SMALL LETTER
+	0x0183: 'b', //  WITH TOPBAR, LATIN SMALL LETTER
+	0x0107: 'c', //  WITH ACUTE, LATIN SMALL LETTER
+	0x010D: 'c', //  WITH CARON, LATIN SMALL LETTER
+	0x00E7: 'c', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x0109: 'c', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x0255: 'c', //  WITH CURL, LATIN SMALL LETTER
+	0x010B: 'c', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x0188: 'c', //  WITH HOOK, LATIN SMALL LETTER
+	0x023C: 'c', //  WITH STROKE, LATIN SMALL LETTER
+	0x0368: 'c', // , COMBINING LATIN SMALL LETTER
+	0x0297: 'c', // , LATIN LETTER STRETCHED
+	0x2184: 'c', // , LATIN SMALL LETTER REVERSED
+	0x010F: 'd', //  WITH CARON, LATIN SMALL LETTER
+	0x1E11: 'd', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E13: 'd', //  WITH CIRCUMFLEX BELOW, LATIN SMALL LETTER
+	0x0221: 'd', //  WITH CURL, LATIN SMALL LETTER
+	0x1E0B: 'd', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E0D: 'd', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0257: 'd', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E0F: 'd', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x0111: 'd', //  WITH STROKE, LATIN SMALL LETTER
+	0x0256: 'd', //  WITH TAIL, LATIN SMALL LETTER
+	0x018C: 'd', //  WITH TOPBAR, LATIN SMALL LETTER
+	0x0369: 'd', // , COMBINING LATIN SMALL LETTER
+	0x00E9: 'e', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0115: 'e', //  WITH BREVE, LATIN SMALL LETTER
+	0x011B: 'e', //  WITH CARON, LATIN SMALL LETTER
+	0x0229: 'e', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E19: 'e', //  WITH CIRCUMFLEX BELOW, LATIN SMALL LETTER
+	0x00EA: 'e', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x00EB: 'e', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x0117: 'e', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1EB9: 'e', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0205: 'e', //  WITH DOUBLE GRAVE, LATIN SMALL LETTER
+	0x00E8: 'e', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1EBB: 'e', //  WITH HOOK ABOVE, LATIN SMALL LETTER
+	0x025D: 'e', //  WITH HOOK, LATIN SMALL LETTER REVERSED OPEN
+	0x0207: 'e', //  WITH INVERTED BREVE, LATIN SMALL LETTER
+	0x0113: 'e', //  WITH MACRON, LATIN SMALL LETTER
+	0x0119: 'e', //  WITH OGONEK, LATIN SMALL LETTER
+	0x0247: 'e', //  WITH STROKE, LATIN SMALL LETTER
+	0x1E1B: 'e', //  WITH TILDE BELOW, LATIN SMALL LETTER
+	0x1EBD: 'e', //  WITH TILDE, LATIN SMALL LETTER
+	0x0364: 'e', // , COMBINING LATIN SMALL LETTER
+	0x029A: 'e', // , LATIN SMALL LETTER CLOSED OPEN
+	0x025E: 'e', // , LATIN SMALL LETTER CLOSED REVERSED OPEN
+	0x025B: 'e', // , LATIN SMALL LETTER OPEN
+	0x0258: 'e', // , LATIN SMALL LETTER REVERSED
+	0x025C: 'e', // , LATIN SMALL LETTER REVERSED OPEN
+	0x01DD: 'e', // , LATIN SMALL LETTER TURNED
+	0x1D08: 'e', // , LATIN SMALL LETTER TURNED OPEN
+	0x1E1F: 'f', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x0192: 'f', //  WITH HOOK, LATIN SMALL LETTER
+	0x01F5: 'g', //  WITH ACUTE, LATIN SMALL LETTER
+	0x011F: 'g', //  WITH BREVE, LATIN SMALL LETTER
+	0x01E7: 'g', //  WITH CARON, LATIN SMALL LETTER
+	0x0123: 'g', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x011D: 'g', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x0121: 'g', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x0260: 'g', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E21: 'g', //  WITH MACRON, LATIN SMALL LETTER
+	0x01E5: 'g', //  WITH STROKE, LATIN SMALL LETTER
+	0x0261: 'g', // , LATIN SMALL LETTER SCRIPT
+	0x1E2B: 'h', //  WITH BREVE BELOW, LATIN SMALL LETTER
+	0x021F: 'h', //  WITH CARON, LATIN SMALL LETTER
+	0x1E29: 'h', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x0125: 'h', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x1E27: 'h', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1E23: 'h', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E25: 'h', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x02AE: 'h', //  WITH FISHHOOK, LATIN SMALL LETTER TURNED
+	0x0266: 'h', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E96: 'h', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x0127: 'h', //  WITH STROKE, LATIN SMALL LETTER
+	0x036A: 'h', // , COMBINING LATIN SMALL LETTER
+	0x0265: 'h', // , LATIN SMALL LETTER TURNED
+	0x2095: 'h', // , LATIN SUBSCRIPT SMALL LETTER
+	0x00ED: 'i', //  WITH ACUTE, LATIN SMALL LETTER
+	0x012D: 'i', //  WITH BREVE, LATIN SMALL LETTER
+	0x01D0: 'i', //  WITH CARON, LATIN SMALL LETTER
+	0x00EE: 'i', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x00EF: 'i', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1ECB: 'i', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0209: 'i', //  WITH DOUBLE GRAVE, LATIN SMALL LETTER
+	0x00EC: 'i', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1EC9: 'i', //  WITH HOOK ABOVE, LATIN SMALL LETTER
+	0x020B: 'i', //  WITH INVERTED BREVE, LATIN SMALL LETTER
+	0x012B: 'i', //  WITH MACRON, LATIN SMALL LETTER
+	0x012F: 'i', //  WITH OGONEK, LATIN SMALL LETTER
+	0x0268: 'i', //  WITH STROKE, LATIN SMALL LETTER
+	0x1E2D: 'i', //  WITH TILDE BELOW, LATIN SMALL LETTER
+	0x0129: 'i', //  WITH TILDE, LATIN SMALL LETTER
+	0x0365: 'i', // , COMBINING LATIN SMALL LETTER
+	0x0131: 'i', // , LATIN SMALL LETTER DOTLESS
+	0x1D09: 'i', // , LATIN SMALL LETTER TURNED
+	0x1D62: 'i', // , LATIN SUBSCRIPT SMALL LETTER
+	0x2071: 'i', // , SUPERSCRIPT LATIN SMALL LETTER
+	0x01F0: 'j', //  WITH CARON, LATIN SMALL LETTER
+	0x0135: 'j', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x029D: 'j', //  WITH CROSSED-TAIL, LATIN SMALL LETTER
+	0x0249: 'j', //  WITH STROKE, LATIN SMALL LETTER
+	0x025F: 'j', //  WITH STROKE, LATIN SMALL LETTER DOTLESS
+	0x0237: 'j', // , LATIN SMALL LETTER DOTLESS
+	0x1E31: 'k', //  WITH ACUTE, LATIN SMALL LETTER
+	0x01E9: 'k', //  WITH CARON, LATIN SMALL LETTER
+	0x0137: 'k', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E33: 'k', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0199: 'k', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E35: 'k', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x029E: 'k', // , LATIN SMALL LETTER TURNED
+	0x2096: 'k', // , LATIN SUBSCRIPT SMALL LETTER
+	0x013A: 'l', //  WITH ACUTE, LATIN SMALL LETTER
+	0x019A: 'l', //  WITH BAR, LATIN SMALL LETTER
+	0x026C: 'l', //  WITH BELT, LATIN SMALL LETTER
+	0x013E: 'l', //  WITH CARON, LATIN SMALL LETTER
+	0x013C: 'l', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E3D: 'l', //  WITH CIRCUMFLEX BELOW, LATIN SMALL LETTER
+	0x0234: 'l', //  WITH CURL, LATIN SMALL LETTER
+	0x1E37: 'l', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x1E3B: 'l', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x0140: 'l', //  WITH MIDDLE DOT, LATIN SMALL LETTER
+	0x026B: 'l', //  WITH MIDDLE TILDE, LATIN SMALL LETTER
+	0x026D: 'l', //  WITH RETROFLEX HOOK, LATIN SMALL LETTER
+	0x0142: 'l', //  WITH STROKE, LATIN SMALL LETTER
+	0x2097: 'l', // , LATIN SUBSCRIPT SMALL LETTER
+	0x1E3F: 'm', //  WITH ACUTE, LATIN SMALL LETTER
+	0x1E41: 'm', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E43: 'm', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0271: 'm', //  WITH HOOK, LATIN SMALL LETTER
+	0x0270: 'm', //  WITH LONG LEG, LATIN SMALL LETTER TURNED
+	0x036B: 'm', // , COMBINING LATIN SMALL LETTER
+	0x1D1F: 'm', // , LATIN SMALL LETTER SIDEWAYS TURNED
+	0x026F: 'm', // , LATIN SMALL LETTER TURNED
+	0x2098: 'm', // , LATIN SUBSCRIPT SMALL LETTER
+	0x0144: 'n', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0148: 'n', //  WITH CARON, LATIN SMALL LETTER
+	0x0146: 'n', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E4B: 'n', //  WITH CIRCUMFLEX BELOW, LATIN SMALL LETTER
+	0x0235: 'n', //  WITH CURL, LATIN SMALL LETTER
+	0x1E45: 'n', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E47: 'n', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x01F9: 'n', //  WITH GRAVE, LATIN SMALL LETTER
+	0x0272: 'n', //  WITH LEFT HOOK, LATIN SMALL LETTER
+	0x1E49: 'n', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x019E: 'n', //  WITH LONG RIGHT LEG, LATIN SMALL LETTER
+	0x0273: 'n', //  WITH RETROFLEX HOOK, LATIN SMALL LETTER
+	0x00F1: 'n', //  WITH TILDE, LATIN SMALL LETTER
+	0x2099: 'n', // , LATIN SUBSCRIPT SMALL LETTER
+	0x00F3: 'o', //  WITH ACUTE, LATIN SMALL LETTER
+	0x014F: 'o', //  WITH BREVE, LATIN SMALL LETTER
+	0x01D2: 'o', //  WITH CARON, LATIN SMALL LETTER
+	0x00F4: 'o', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x00F6: 'o', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x022F: 'o', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1ECD: 'o', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0151: 'o', //  WITH DOUBLE ACUTE, LATIN SMALL LETTER
+	0x020D: 'o', //  WITH DOUBLE GRAVE, LATIN SMALL LETTER
+	0x00F2: 'o', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1ECF: 'o', //  WITH HOOK ABOVE, LATIN SMALL LETTER
+	0x01A1: 'o', //  WITH HORN, LATIN SMALL LETTER
+	0x020F: 'o', //  WITH INVERTED BREVE, LATIN SMALL LETTER
+	0x014D: 'o', //  WITH MACRON, LATIN SMALL LETTER
+	0x01EB: 'o', //  WITH OGONEK, LATIN SMALL LETTER
+	0x00F8: 'o', //  WITH STROKE, LATIN SMALL LETTER
+	0x1D13: 'o', //  WITH STROKE, LATIN SMALL LETTER SIDEWAYS
+	0x00F5: 'o', //  WITH TILDE, LATIN SMALL LETTER
+	0x0366: 'o', // , COMBINING LATIN SMALL LETTER
+	0x0275: 'o', // , LATIN SMALL LETTER BARRED
+	0x1D17: 'o', // , LATIN SMALL LETTER BOTTOM HALF
+	0x0254: 'o', // , LATIN SMALL LETTER OPEN
+	0x1D11: 'o', // , LATIN SMALL LETTER SIDEWAYS
+	0x1D12: 'o', // , LATIN SMALL LETTER SIDEWAYS OPEN
+	0x1D16: 'o', // , LATIN SMALL LETTER TOP HALF
+	0x1E55: 'p', //  WITH ACUTE, LATIN SMALL LETTER
+	0x1E57: 'p', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x01A5: 'p', //  WITH HOOK, LATIN SMALL LETTER
+	0x209A: 'p', // , LATIN SUBSCRIPT SMALL LETTER
+	0x024B: 'q', //  WITH HOOK TAIL, LATIN SMALL LETTER
+	0x02A0: 'q', //  WITH HOOK, LATIN SMALL LETTER
+	0x0155: 'r', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0159: 'r', //  WITH CARON, LATIN SMALL LETTER
+	0x0157: 'r', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E59: 'r', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E5B: 'r', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0211: 'r', //  WITH DOUBLE GRAVE, LATIN SMALL LETTER
+	0x027E: 'r', //  WITH FISHHOOK, LATIN SMALL LETTER
+	0x027F: 'r', //  WITH FISHHOOK, LATIN SMALL LETTER REVERSED
+	0x027B: 'r', //  WITH HOOK, LATIN SMALL LETTER TURNED
+	0x0213: 'r', //  WITH INVERTED BREVE, LATIN SMALL LETTER
+	0x1E5F: 'r', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x027C: 'r', //  WITH LONG LEG, LATIN SMALL LETTER
+	0x027A: 'r', //  WITH LONG LEG, LATIN SMALL LETTER TURNED
+	0x024D: 'r', //  WITH STROKE, LATIN SMALL LETTER
+	0x027D: 'r', //  WITH TAIL, LATIN SMALL LETTER
+	0x036C: 'r', // , COMBINING LATIN SMALL LETTER
+	0x0279: 'r', // , LATIN SMALL LETTER TURNED
+	0x1D63: 'r', // , LATIN SUBSCRIPT SMALL LETTER
+	0x015B: 's', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0161: 's', //  WITH CARON, LATIN SMALL LETTER
+	0x015F: 's', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x015D: 's', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x0219: 's', //  WITH COMMA BELOW, LATIN SMALL LETTER
+	0x1E61: 's', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E9B: 's', //  WITH DOT ABOVE, LATIN SMALL LETTER LONG
+	0x1E63: 's', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0282: 's', //  WITH HOOK, LATIN SMALL LETTER
+	0x023F: 's', //  WITH SWASH TAIL, LATIN SMALL LETTER
+	0x017F: 's', // , LATIN SMALL LETTER LONG
+	0x00DF: 's', // , LATIN SMALL LETTER SHARP
+	0x209B: 's', // , LATIN SUBSCRIPT SMALL LETTER
+	0x0165: 't', //  WITH CARON, LATIN SMALL LETTER
+	0x0163: 't', //  WITH CEDILLA, LATIN SMALL LETTER
+	0x1E71: 't', //  WITH CIRCUMFLEX BELOW, LATIN SMALL LETTER
+	0x021B: 't', //  WITH COMMA BELOW, LATIN SMALL LETTER
+	0x0236: 't', //  WITH CURL, LATIN SMALL LETTER
+	0x1E97: 't', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1E6B: 't', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E6D: 't', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x01AD: 't', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E6F: 't', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x01AB: 't', //  WITH PALATAL HOOK, LATIN SMALL LETTER
+	0x0288: 't', //  WITH RETROFLEX HOOK, LATIN SMALL LETTER
+	0x0167: 't', //  WITH STROKE, LATIN SMALL LETTER
+	0x036D: 't', // , COMBINING LATIN SMALL LETTER
+	0x0287: 't', // , LATIN SMALL LETTER TURNED
+	0x209C: 't', // , LATIN SUBSCRIPT SMALL LETTER
+	0x0289: 'u', //  BAR, LATIN SMALL LETTER
+	0x00FA: 'u', //  WITH ACUTE, LATIN SMALL LETTER
+	0x016D: 'u', //  WITH BREVE, LATIN SMALL LETTER
+	0x01D4: 'u', //  WITH CARON, LATIN SMALL LETTER
+	0x1E77: 'u', //  WITH CIRCUMFLEX BELOW, LATIN SMALL LETTER
+	0x00FB: 'u', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x1E73: 'u', //  WITH DIAERESIS BELOW, LATIN SMALL LETTER
+	0x00FC: 'u', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1EE5: 'u', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0171: 'u', //  WITH DOUBLE ACUTE, LATIN SMALL LETTER
+	0x0215: 'u', //  WITH DOUBLE GRAVE, LATIN SMALL LETTER
+	0x00F9: 'u', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1EE7: 'u', //  WITH HOOK ABOVE, LATIN SMALL LETTER
+	0x01B0: 'u', //  WITH HORN, LATIN SMALL LETTER
+	0x0217: 'u', //  WITH INVERTED BREVE, LATIN SMALL LETTER
+	0x016B: 'u', //  WITH MACRON, LATIN SMALL LETTER
+	0x0173: 'u', //  WITH OGONEK, LATIN SMALL LETTER
+	0x016F: 'u', //  WITH RING ABOVE, LATIN SMALL LETTER
+	0x1E75: 'u', //  WITH TILDE BELOW, LATIN SMALL LETTER
+	0x0169: 'u', //  WITH TILDE, LATIN SMALL LETTER
+	0x0367: 'u', // , COMBINING LATIN SMALL LETTER
+	0x1D1D: 'u', // , LATIN SMALL LETTER SIDEWAYS
+	0x1D1E: 'u', // , LATIN SMALL LETTER SIDEWAYS DIAERESIZED
+	0x1D64: 'u', // , LATIN SUBSCRIPT SMALL LETTER
+	0x1E7F: 'v', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x028B: 'v', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E7D: 'v', //  WITH TILDE, LATIN SMALL LETTER
+	0x036E: 'v', // , COMBINING LATIN SMALL LETTER
+	0x028C: 'v', // , LATIN SMALL LETTER TURNED
+	0x1D65: 'v', // , LATIN SUBSCRIPT SMALL LETTER
+	0x1E83: 'w', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0175: 'w', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x1E85: 'w', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1E87: 'w', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E89: 'w', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x1E81: 'w', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1E98: 'w', //  WITH RING ABOVE, LATIN SMALL LETTER
+	0x028D: 'w', // , LATIN SMALL LETTER TURNED
+	0x1E8D: 'x', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1E8B: 'x', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x036F: 'x', // , COMBINING LATIN SMALL LETTER
+	0x00FD: 'y', //  WITH ACUTE, LATIN SMALL LETTER
+	0x0177: 'y', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x00FF: 'y', //  WITH DIAERESIS, LATIN SMALL LETTER
+	0x1E8F: 'y', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1EF5: 'y', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x1EF3: 'y', //  WITH GRAVE, LATIN SMALL LETTER
+	0x1EF7: 'y', //  WITH HOOK ABOVE, LATIN SMALL LETTER
+	0x01B4: 'y', //  WITH HOOK, LATIN SMALL LETTER
+	0x0233: 'y', //  WITH MACRON, LATIN SMALL LETTER
+	0x1E99: 'y', //  WITH RING ABOVE, LATIN SMALL LETTER
+	0x024F: 'y', //  WITH STROKE, LATIN SMALL LETTER
+	0x1EF9: 'y', //  WITH TILDE, LATIN SMALL LETTER
+	0x028E: 'y', // , LATIN SMALL LETTER TURNED
+	0x017A: 'z', //  WITH ACUTE, LATIN SMALL LETTER
+	0x017E: 'z', //  WITH CARON, LATIN SMALL LETTER
+	0x1E91: 'z', //  WITH CIRCUMFLEX, LATIN SMALL LETTER
+	0x0291: 'z', //  WITH CURL, LATIN SMALL LETTER
+	0x017C: 'z', //  WITH DOT ABOVE, LATIN SMALL LETTER
+	0x1E93: 'z', //  WITH DOT BELOW, LATIN SMALL LETTER
+	0x0225: 'z', //  WITH HOOK, LATIN SMALL LETTER
+	0x1E95: 'z', //  WITH LINE BELOW, LATIN SMALL LETTER
+	0x0290: 'z', //  WITH RETROFLEX HOOK, LATIN SMALL LETTER
+	0x01B6: 'z', //  WITH STROKE, LATIN SMALL LETTER
+	0x0240: 'z', //  WITH SWASH TAIL, LATIN SMALL LETTER
+	0x0251: 'a', // , latin small letter script
+	0x00C1: 'A', //  WITH ACUTE, LATIN CAPITAL LETTER
+	0x00C2: 'A', //  WITH CIRCUMFLEX, LATIN CAPITAL LETTER
+	0x00C4: 'A', //  WITH DIAERESIS, LATIN CAPITAL LETTER
+	0x00C0: 'A', //  WITH GRAVE, LATIN CAPITAL LETTER
+	0x00C5: 'A', //  WITH RING ABOVE, LATIN CAPITAL LETTER
+	0x023A: 'A', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x00C3: 'A', //  WITH TILDE, LATIN CAPITAL LETTER
+	0x1D00: 'A', // , LATIN LETTER SMALL CAPITAL
+	0x0181: 'B', //  WITH HOOK, LATIN CAPITAL LETTER
+	0x0243: 'B', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x0299: 'B', // , LATIN LETTER SMALL CAPITAL
+	0x1D03: 'B', // , LATIN LETTER SMALL CAPITAL BARRED
+	0x00C7: 'C', //  WITH CEDILLA, LATIN CAPITAL LETTER
+	0x023B: 'C', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x1D04: 'C', // , LATIN LETTER SMALL CAPITAL
+	0x018A: 'D', //  WITH HOOK, LATIN CAPITAL LETTER
+	0x0189: 'D', // , LATIN CAPITAL LETTER AFRICAN
+	0x1D05: 'D', // , LATIN LETTER SMALL CAPITAL
+	0x00C9: 'E', //  WITH ACUTE, LATIN CAPITAL LETTER
+	0x00CA: 'E', //  WITH CIRCUMFLEX, LATIN CAPITAL LETTER
+	0x00CB: 'E', //  WITH DIAERESIS, LATIN CAPITAL LETTER
+	0x00C8: 'E', //  WITH GRAVE, LATIN CAPITAL LETTER
+	0x0246: 'E', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x0190: 'E', // , LATIN CAPITAL LETTER OPEN
+	0x018E: 'E', // , LATIN CAPITAL LETTER REVERSED
+	0x1D07: 'E', // , LATIN LETTER SMALL CAPITAL
+	0x0193: 'G', //  WITH HOOK, LATIN CAPITAL LETTER
+	0x029B: 'G', //  WITH HOOK, LATIN LETTER SMALL CAPITAL
+	0x0262: 'G', // , LATIN LETTER SMALL CAPITAL
+	0x029C: 'H', // , LATIN LETTER SMALL CAPITAL
+	0x00CD: 'I', //  WITH ACUTE, LATIN CAPITAL LETTER
+	0x00CE: 'I', //  WITH CIRCUMFLEX, LATIN CAPITAL LETTER
+	0x00CF: 'I', //  WITH DIAERESIS, LATIN CAPITAL LETTER
+	0x0130: 'I', //  WITH DOT ABOVE, LATIN CAPITAL LETTER
+	0x00CC: 'I', //  WITH GRAVE, LATIN CAPITAL LETTER
+	0x0197: 'I', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x026A: 'I', // , LATIN LETTER SMALL CAPITAL
+	0x0248: 'J', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x1D0A: 'J', // , LATIN LETTER SMALL CAPITAL
+	0x1D0B: 'K', // , LATIN LETTER SMALL CAPITAL
+	0x023D: 'L', //  WITH BAR, LATIN CAPITAL LETTER
+	0x1D0C: 'L', //  WITH STROKE, LATIN LETTER SMALL CAPITAL
+	0x029F: 'L', // , LATIN LETTER SMALL CAPITAL
+	0x019C: 'M', // , LATIN CAPITAL LETTER TURNED
+	0x1D0D: 'M', // , LATIN LETTER SMALL CAPITAL
+	0x019D: 'N', //  WITH LEFT HOOK, LATIN CAPITAL LETTER
+	0x0220: 'N', //  WITH LONG RIGHT LEG, LATIN CAPITAL LETTER
+	0x00D1: 'N', //  WITH TILDE, LATIN CAPITAL LETTER
+	0x0274: 'N', // , LATIN LETTER SMALL CAPITAL
+	0x1D0E: 'N', // , LATIN LETTER SMALL CAPITAL REVERSED
+	0x00D3: 'O', //  WITH ACUTE, LATIN CAPITAL LETTER
+	0x00D4: 'O', //  WITH CIRCUMFLEX, LATIN CAPITAL LETTER
+	0x00D6: 'O', //  WITH DIAERESIS, LATIN CAPITAL LETTER
+	0x00D2: 'O', //  WITH GRAVE, LATIN CAPITAL LETTER
+	0x019F: 'O', //  WITH MIDDLE TILDE, LATIN CAPITAL LETTER
+	0x00D8: 'O', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x00D5: 'O', //  WITH TILDE, LATIN CAPITAL LETTER
+	0x0186: 'O', // , LATIN CAPITAL LETTER OPEN
+	0x1D0F: 'O', // , LATIN LETTER SMALL CAPITAL
+	0x1D10: 'O', // , LATIN LETTER SMALL CAPITAL OPEN
+	0x1D18: 'P', // , LATIN LETTER SMALL CAPITAL
+	0x024A: 'Q', //  WITH HOOK TAIL, LATIN CAPITAL LETTER SMALL
+	0x024C: 'R', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x0280: 'R', // , LATIN LETTER SMALL CAPITAL
+	0x0281: 'R', // , LATIN LETTER SMALL CAPITAL INVERTED
+	0x1D19: 'R', // , LATIN LETTER SMALL CAPITAL REVERSED
+	0x1D1A: 'R', // , LATIN LETTER SMALL CAPITAL TURNED
+	0x023E: 'T', //  WITH DIAGONAL STROKE, LATIN CAPITAL LETTER
+	0x01AE: 'T', //  WITH RETROFLEX HOOK, LATIN CAPITAL LETTER
+	0x1D1B: 'T', // , LATIN LETTER SMALL CAPITAL
+	0x0244: 'U', //  BAR, LATIN CAPITAL LETTER
+	0x00DA: 'U', //  WITH ACUTE, LATIN CAPITAL LETTER
+	0x00DB: 'U', //  WITH CIRCUMFLEX, LATIN CAPITAL LETTER
+	0x00DC: 'U', //  WITH DIAERESIS, LATIN CAPITAL LETTER
+	0x00D9: 'U', //  WITH GRAVE, LATIN CAPITAL LETTER
+	0x1D1C: 'U', // , LATIN LETTER SMALL CAPITAL
+	0x01B2: 'V', //  WITH HOOK, LATIN CAPITAL LETTER
+	0x0245: 'V', // , LATIN CAPITAL LETTER TURNED
+	0x1D20: 'V', // , LATIN LETTER SMALL CAPITAL
+	0x1D21: 'W', // , LATIN LETTER SMALL CAPITAL
+	0x00DD: 'Y', //  WITH ACUTE, LATIN CAPITAL LETTER
+	0x0178: 'Y', //  WITH DIAERESIS, LATIN CAPITAL LETTER
+	0x024E: 'Y', //  WITH STROKE, LATIN CAPITAL LETTER
+	0x028F: 'Y', // , LATIN LETTER SMALL CAPITAL
+	0x1D22: 'Z', // , LATIN LETTER SMALL CAPITAL
+}
+
+// NormalizeRunes normalizes latin script letters
+func NormalizeRunes(runes []rune) []rune {
+	ret := make([]rune, len(runes))
+	copy(ret, runes)
+	for idx, r := range runes {
+		if r < 0x00C0 || r > 0x2184 {
+			continue
+		}
+		n := normalized[r]
+		if n > 0 {
+			ret[idx] = normalized[r]
+		}
+	}
+	return ret
+}

src/ansi.go

@@ -6,6 +6,8 @@ import (
 	"strconv"
 	"strings"
 	"unicode/utf8"
+
+	"github.com/junegunn/fzf/src/tui"
 )
 
 type ansiOffset struct {
@@ -14,26 +16,35 @@ type ansiOffset struct {
 }
 
 type ansiState struct {
-	fg   int
-	bg   int
-	bold bool
+	fg   tui.Color
+	bg   tui.Color
+	attr tui.Attr
 }
 
 func (s *ansiState) colored() bool {
-	return s.fg != -1 || s.bg != -1 || s.bold
+	return s.fg != -1 || s.bg != -1 || s.attr > 0
 }
 
 func (s *ansiState) equals(t *ansiState) bool {
 	if t == nil {
 		return !s.colored()
 	}
-	return s.fg == t.fg && s.bg == t.bg && s.bold == t.bold
+	return s.fg == t.fg && s.bg == t.bg && s.attr == t.attr
 }
 
 var ansiRegex *regexp.Regexp
 
 func init() {
-	ansiRegex = regexp.MustCompile("\x1b\\[[0-9;]*[mK]")
+	/*
+		References:
+		- https://github.com/gnachman/iTerm2
+		- http://ascii-table.com/ansi-escape-sequences.php
+		- http://ascii-table.com/ansi-escape-sequences-vt-100.php
+		- http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
+	*/
+	// The following regular expression will include not all but most of the
+	// frequently used ANSI sequences
+	ansiRegex = regexp.MustCompile("\x1b[\\[()][0-9;]*[a-zA-Z@]|\x1b.|[\x08\x0e\x0f]")
 }
 
 func extractColor(str string, state *ansiState, proc func(string, *ansiState) bool) (string, *[]ansiOffset, *ansiState) {
@@ -94,11 +105,11 @@ func interpretCode(ansiCode string, prevState *ansiState) *ansiState {
 	// State
 	var state *ansiState
 	if prevState == nil {
-		state = &ansiState{-1, -1, false}
+		state = &ansiState{-1, -1, 0}
 	} else {
-		state = &ansiState{prevState.fg, prevState.bg, prevState.bold}
+		state = &ansiState{prevState.fg, prevState.bg, prevState.attr}
 	}
-	if ansiCode[len(ansiCode)-1] == 'K' {
+	if ansiCode[0] != '\x1b' || ansiCode[1] != '[' || ansiCode[len(ansiCode)-1] != 'm' {
 		return state
 	}
 
@@ -108,7 +119,7 @@ func interpretCode(ansiCode string, prevState *ansiState) *ansiState {
 	init := func() {
 		state.fg = -1
 		state.bg = -1
-		state.bold = false
+		state.attr = 0
 		state256 = 0
 	}
 
@@ -132,28 +143,56 @@ func interpretCode(ansiCode string, prevState *ansiState) *ansiState {
 				case 49:
 					state.bg = -1
 				case 1:
-					state.bold = true
+					state.attr = state.attr | tui.Bold
+				case 2:
+					state.attr = state.attr | tui.Dim
+				case 3:
+					state.attr = state.attr | tui.Italic
+				case 4:
+					state.attr = state.attr | tui.Underline
+				case 5:
+					state.attr = state.attr | tui.Blink
+				case 7:
+					state.attr = state.attr | tui.Reverse
 				case 0:
 					init()
 				default:
 					if num >= 30 && num <= 37 {
-						state.fg = num - 30
+						state.fg = tui.Color(num - 30)
 					} else if num >= 40 && num <= 47 {
-						state.bg = num - 40
+						state.bg = tui.Color(num - 40)
+					} else if num >= 90 && num <= 97 {
+						state.fg = tui.Color(num - 90 + 8)
+					} else if num >= 100 && num <= 107 {
+						state.bg = tui.Color(num - 100 + 8)
 					}
 				}
 			case 1:
 				switch num {
+				case 2:
+					state256 = 10 // MAGIC
 				case 5:
 					state256++
 				default:
 					state256 = 0
 				}
 			case 2:
-				*ptr = num
+				*ptr = tui.Color(num)
+				state256 = 0
+			case 10:
+				*ptr = tui.Color(1<<24) | tui.Color(num<<16)
+				state256++
+			case 11:
+				*ptr = *ptr | tui.Color(num<<8)
+				state256++
+			case 12:
+				*ptr = *ptr | tui.Color(num)
 				state256 = 0
 			}
 		}
 	}
+	if state256 > 0 {
+		*ptr = -1
+	}
 	return state
 }

src/ansi_test.go

@@ -3,13 +3,19 @@ package fzf
 import (
 	"fmt"
 	"testing"
+
+	"github.com/junegunn/fzf/src/tui"
 )
 
 func TestExtractColor(t *testing.T) {
-	assert := func(offset ansiOffset, b int32, e int32, fg int, bg int, bold bool) {
+	assert := func(offset ansiOffset, b int32, e int32, fg tui.Color, bg tui.Color, bold bool) {
+		var attr tui.Attr
+		if bold {
+			attr = tui.Bold
+		}
 		if offset.offset[0] != b || offset.offset[1] != e ||
-			offset.color.fg != fg || offset.color.bg != bg || offset.color.bold != bold {
-			t.Error(offset, b, e, fg, bg, bold)
+			offset.color.fg != fg || offset.color.bg != bg || offset.color.attr != attr {
+			t.Error(offset, b, e, fg, bg, attr)
 		}
 	}
 
@@ -20,7 +26,7 @@ func TestExtractColor(t *testing.T) {
 		output, ansiOffsets, newState := extractColor(src, state, nil)
 		state = newState
 		if output != "hello world" {
-			t.Errorf("Invalid output: {}", output)
+			t.Errorf("Invalid output: %s %s", output, []rune(output))
 		}
 		fmt.Println(src, ansiOffsets, clean)
 		assertion(ansiOffsets, state)
@@ -50,7 +56,7 @@ func TestExtractColor(t *testing.T) {
 	})
 
 	state = nil
-	src = "\x1b[1mhello \x1b[mworld"
+	src = "\x1b[1mhello \x1b[mw\x1b7o\x1b8r\x1b(Bl\x1b[2@d"
 	check(func(offsets *[]ansiOffset, state *ansiState) {
 		if len(*offsets) != 1 {
 			t.Fail()
@@ -121,7 +127,7 @@ func TestExtractColor(t *testing.T) {
 		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		if state.fg != 2 || state.bg != -1 || !state.bold {
+		if state.fg != 2 || state.bg != -1 || state.attr == 0 {
 			t.Fail()
 		}
 		assert((*offsets)[0], 6, 11, 2, -1, true)
@@ -132,7 +138,7 @@ func TestExtractColor(t *testing.T) {
 		if len(*offsets) != 1 {
 			t.Fail()
 		}
-		if state.fg != 2 || state.bg != -1 || !state.bold {
+		if state.fg != 2 || state.bg != -1 || state.attr == 0 {
 			t.Fail()
 		}
 		assert((*offsets)[0], 0, 11, 2, -1, true)
@@ -143,7 +149,7 @@ func TestExtractColor(t *testing.T) {
 		if len(*offsets) != 2 {
 			t.Fail()
 		}
-		if state.fg != 200 || state.bg != 100 || state.bold {
+		if state.fg != 200 || state.bg != 100 || state.attr > 0 {
 			t.Fail()
 		}
 		assert((*offsets)[0], 0, 6, 2, -1, true)

src/chunklist_test.go

@@ -9,7 +9,7 @@ import (
 
 func TestChunkList(t *testing.T) {
 	// FIXME global
-	sortCriteria = []criterion{byMatchLen, byLength}
+	sortCriteria = []criterion{byScore, byLength}
 
 	cl := NewChunkList(func(s []byte, i int) *Item {
 		return &Item{text: util.ToChars(s), index: int32(i * 2)}

src/constants.go

@@ -8,27 +8,33 @@ import (
 
 const (
 	// Current version
-	version = "0.13.5"
+	version = "0.16.0"
 
 	// Core
 	coordinatorDelayMax  time.Duration = 100 * time.Millisecond
 	coordinatorDelayStep time.Duration = 10 * time.Millisecond
 
 	// Reader
-	defaultCommand   = `find . -path '*/\.*' -prune -o -type f -print -o -type l -print 2> /dev/null | sed s/^..//`
 	readerBufferSize = 64 * 1024
 
 	// Terminal
-	initialDelay    = 20 * time.Millisecond
-	initialDelayTac = 100 * time.Millisecond
-	spinnerDuration = 200 * time.Millisecond
+	initialDelay     = 20 * time.Millisecond
+	initialDelayTac  = 100 * time.Millisecond
+	spinnerDuration  = 200 * time.Millisecond
+	maxPatternLength = 100
 
 	// Matcher
-	progressMinDuration = 200 * time.Millisecond
+	numPartitionsMultiplier = 8
+	maxPartitions           = 32
+	progressMinDuration     = 200 * time.Millisecond
 
 	// Capacity of each chunk
 	chunkSize int = 100
 
+	// Pre-allocated memory slices to minimize GC
+	slab16Size int = 100 * 1024 // 200KB * 32 = 12.8MB
+	slab32Size int = 2048       // 8KB * 32 = 256KB
+
 	// Do not cache results of low selectivity queries
 	queryCacheMax int = chunkSize / 5
 

src/constants_unix.go

@@ -0,0 +1,8 @@
+// +build !windows
+
+package fzf
+
+const (
+	// Reader
+	defaultCommand = `find . -path '*/\.*' -prune -o -type f -print -o -type l -print 2> /dev/null | sed s/^..//`
+)

src/constants_windows.go

@@ -0,0 +1,8 @@
+// +build windows
+
+package fzf
+
+const (
+	// Reader
+	defaultCommand = `dir /s/b`
+)

src/core.go

@@ -143,27 +143,28 @@ func Run(opts *Options) {
 	}
 	patternBuilder := func(runes []rune) *Pattern {
 		return BuildPattern(
-			opts.Fuzzy, opts.Extended, opts.Case, forward, opts.Filter == nil,
-			opts.Nth, opts.Delimiter, runes)
+			opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, opts.Normalize, forward,
+			opts.Filter == nil, opts.Nth, opts.Delimiter, runes)
 	}
 	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox)
 
 	// Filtering mode
 	if opts.Filter != nil {
 		if opts.PrintQuery {
-			fmt.Println(*opts.Filter)
+			opts.Printer(*opts.Filter)
 		}
 
 		pattern := patternBuilder([]rune(*opts.Filter))
 
 		found := false
 		if streamingFilter {
+			slab := util.MakeSlab(slab16Size, slab32Size)
 			reader := Reader{
 				func(runes []byte) bool {
 					item := chunkList.trans(runes, 0)
 					if item != nil {
-						if result, _ := pattern.MatchItem(item); result != nil {
-							fmt.Println(item.text.ToString())
+						if result, _, _ := pattern.MatchItem(item, false, slab); result != nil {
+							opts.Printer(item.text.ToString())
 							found = true
 						}
 					}
@@ -179,7 +180,7 @@ func Run(opts *Options) {
 				chunks:  snapshot,
 				pattern: pattern})
 			for i := 0; i < merger.Length(); i++ {
-				fmt.Println(merger.Get(i).item.AsString(opts.Ansi))
+				opts.Printer(merger.Get(i).item.AsString(opts.Ansi))
 				found = true
 			}
 		}
@@ -253,13 +254,13 @@ func Run(opts *Options) {
 							} else if val.final {
 								if opts.Exit0 && count == 0 || opts.Select1 && count == 1 {
 									if opts.PrintQuery {
-										fmt.Println(opts.Query)
+										opts.Printer(opts.Query)
 									}
 									if len(opts.Expect) > 0 {
-										fmt.Println()
+										opts.Printer("")
 									}
 									for i := 0; i < count; i++ {
-										fmt.Println(val.Get(i).item.AsString(opts.Ansi))
+										opts.Printer(val.Get(i).item.AsString(opts.Ansi))
 									}
 									if count > 0 {
 										os.Exit(exitOk)

src/curses/curses.go

@@ -1,704 +0,0 @@
-package curses
-
-/*
-#include <ncurses.h>
-#include <locale.h>
-#cgo !static LDFLAGS: -lncurses
-#cgo static LDFLAGS: -l:libncursesw.a -l:libtinfo.a -l:libgpm.a -ldl
-#cgo android static LDFLAGS: -l:libncurses.a -fPIE -march=armv7-a -mfpu=neon -mhard-float -Wl,--no-warn-mismatch
-
-SCREEN *c_newterm () {
-	return newterm(NULL, stderr, stdin);
-}
-
-*/
-import "C"
-
-import (
-	"fmt"
-	"os"
-	"strings"
-	"syscall"
-	"time"
-	"unicode/utf8"
-)
-
-// Types of user action
-const (
-	Rune = iota
-
-	CtrlA
-	CtrlB
-	CtrlC
-	CtrlD
-	CtrlE
-	CtrlF
-	CtrlG
-	CtrlH
-	Tab
-	CtrlJ
-	CtrlK
-	CtrlL
-	CtrlM
-	CtrlN
-	CtrlO
-	CtrlP
-	CtrlQ
-	CtrlR
-	CtrlS
-	CtrlT
-	CtrlU
-	CtrlV
-	CtrlW
-	CtrlX
-	CtrlY
-	CtrlZ
-	ESC
-
-	Invalid
-	Mouse
-	DoubleClick
-
-	BTab
-	BSpace
-
-	Del
-	PgUp
-	PgDn
-
-	Up
-	Down
-	Left
-	Right
-	Home
-	End
-
-	SLeft
-	SRight
-
-	F1
-	F2
-	F3
-	F4
-	F5
-	F6
-	F7
-	F8
-	F9
-	F10
-
-	AltEnter
-	AltSpace
-	AltSlash
-	AltBS
-	AltA
-	AltB
-	AltC
-	AltD
-	AltE
-	AltF
-
-	AltZ = AltA + 'z' - 'a'
-)
-
-// Pallete
-const (
-	ColNormal = iota
-	ColPrompt
-	ColMatch
-	ColCurrent
-	ColCurrentMatch
-	ColSpinner
-	ColInfo
-	ColCursor
-	ColSelected
-	ColHeader
-	ColBorder
-	ColUser // Should be the last entry
-)
-
-const (
-	doubleClickDuration = 500 * time.Millisecond
-	colDefault          = -1
-	colUndefined        = -2
-)
-
-type ColorTheme struct {
-	UseDefault   bool
-	Fg           int16
-	Bg           int16
-	DarkBg       int16
-	Prompt       int16
-	Match        int16
-	Current      int16
-	CurrentMatch int16
-	Spinner      int16
-	Info         int16
-	Cursor       int16
-	Selected     int16
-	Header       int16
-	Border       int16
-}
-
-type Event struct {
-	Type       int
-	Char       rune
-	MouseEvent *MouseEvent
-}
-
-type MouseEvent struct {
-	Y      int
-	X      int
-	S      int
-	Down   bool
-	Double bool
-	Mod    bool
-}
-
-var (
-	_buf          []byte
-	_in           *os.File
-	_color        func(int, bool) C.int
-	_colorMap     map[int]int
-	_prevDownTime time.Time
-	_clickY       []int
-	_screen       *C.SCREEN
-	Default16     *ColorTheme
-	Dark256       *ColorTheme
-	Light256      *ColorTheme
-	FG            int
-	CurrentFG     int
-	BG            int
-	DarkBG        int
-)
-
-type Window struct {
-	win    *C.WINDOW
-	Top    int
-	Left   int
-	Width  int
-	Height int
-}
-
-func NewWindow(top int, left int, width int, height int, border bool) *Window {
-	win := C.newwin(C.int(height), C.int(width), C.int(top), C.int(left))
-	if border {
-		attr := _color(ColBorder, false)
-		C.wattron(win, attr)
-		C.box(win, 0, 0)
-		C.wattroff(win, attr)
-	}
-	return &Window{
-		win:    win,
-		Top:    top,
-		Left:   left,
-		Width:  width,
-		Height: height,
-	}
-}
-
-func EmptyTheme() *ColorTheme {
-	return &ColorTheme{
-		UseDefault:   true,
-		Fg:           colUndefined,
-		Bg:           colUndefined,
-		DarkBg:       colUndefined,
-		Prompt:       colUndefined,
-		Match:        colUndefined,
-		Current:      colUndefined,
-		CurrentMatch: colUndefined,
-		Spinner:      colUndefined,
-		Info:         colUndefined,
-		Cursor:       colUndefined,
-		Selected:     colUndefined,
-		Header:       colUndefined,
-		Border:       colUndefined}
-}
-
-func init() {
-	_prevDownTime = time.Unix(0, 0)
-	_clickY = []int{}
-	_colorMap = make(map[int]int)
-	Default16 = &ColorTheme{
-		UseDefault:   true,
-		Fg:           15,
-		Bg:           0,
-		DarkBg:       C.COLOR_BLACK,
-		Prompt:       C.COLOR_BLUE,
-		Match:        C.COLOR_GREEN,
-		Current:      C.COLOR_YELLOW,
-		CurrentMatch: C.COLOR_GREEN,
-		Spinner:      C.COLOR_GREEN,
-		Info:         C.COLOR_WHITE,
-		Cursor:       C.COLOR_RED,
-		Selected:     C.COLOR_MAGENTA,
-		Header:       C.COLOR_CYAN,
-		Border:       C.COLOR_BLACK}
-	Dark256 = &ColorTheme{
-		UseDefault:   true,
-		Fg:           15,
-		Bg:           0,
-		DarkBg:       236,
-		Prompt:       110,
-		Match:        108,
-		Current:      254,
-		CurrentMatch: 151,
-		Spinner:      148,
-		Info:         144,
-		Cursor:       161,
-		Selected:     168,
-		Header:       109,
-		Border:       59}
-	Light256 = &ColorTheme{
-		UseDefault:   true,
-		Fg:           15,
-		Bg:           0,
-		DarkBg:       251,
-		Prompt:       25,
-		Match:        66,
-		Current:      237,
-		CurrentMatch: 23,
-		Spinner:      65,
-		Info:         101,
-		Cursor:       161,
-		Selected:     168,
-		Header:       31,
-		Border:       145}
-}
-
-func attrColored(pair int, bold bool) C.int {
-	var attr C.int
-	if pair > ColNormal {
-		attr = C.COLOR_PAIR(C.int(pair))
-	}
-	if bold {
-		attr = attr | C.A_BOLD
-	}
-	return attr
-}
-
-func attrMono(pair int, bold bool) C.int {
-	var attr C.int
-	switch pair {
-	case ColCurrent:
-		if bold {
-			attr = C.A_REVERSE
-		}
-	case ColMatch:
-		attr = C.A_UNDERLINE
-	case ColCurrentMatch:
-		attr = C.A_UNDERLINE | C.A_REVERSE
-	}
-	if bold {
-		attr = attr | C.A_BOLD
-	}
-	return attr
-}
-
-func MaxX() int {
-	return int(C.COLS)
-}
-
-func MaxY() int {
-	return int(C.LINES)
-}
-
-func getch(nonblock bool) int {
-	b := make([]byte, 1)
-	syscall.SetNonblock(int(_in.Fd()), nonblock)
-	_, err := _in.Read(b)
-	if err != nil {
-		return -1
-	}
-	return int(b[0])
-}
-
-func Init(theme *ColorTheme, black bool, mouse bool) {
-	{
-		in, err := os.OpenFile("/dev/tty", syscall.O_RDONLY, 0)
-		if err != nil {
-			panic("Failed to open /dev/tty")
-		}
-		_in = in
-		// Break STDIN
-		// syscall.Dup2(int(in.Fd()), int(os.Stdin.Fd()))
-	}
-
-	C.setlocale(C.LC_ALL, C.CString(""))
-	_screen = C.c_newterm()
-	if _screen == nil {
-		fmt.Println("Invalid $TERM: " + os.Getenv("TERM"))
-		os.Exit(2)
-	}
-	C.set_term(_screen)
-	if mouse {
-		C.mousemask(C.ALL_MOUSE_EVENTS, nil)
-	}
-	C.noecho()
-	C.raw() // stty dsusp undef
-
-	if theme != nil {
-		C.start_color()
-		var baseTheme *ColorTheme
-		if C.tigetnum(C.CString("colors")) >= 256 {
-			baseTheme = Dark256
-		} else {
-			baseTheme = Default16
-		}
-		initPairs(baseTheme, theme, black)
-		_color = attrColored
-	} else {
-		_color = attrMono
-	}
-}
-
-func override(a int16, b int16) C.short {
-	if b == colUndefined {
-		return C.short(a)
-	}
-	return C.short(b)
-}
-
-func initPairs(baseTheme *ColorTheme, theme *ColorTheme, black bool) {
-	fg := override(baseTheme.Fg, theme.Fg)
-	bg := override(baseTheme.Bg, theme.Bg)
-	if black {
-		bg = C.COLOR_BLACK
-	} else if theme.UseDefault {
-		fg = colDefault
-		bg = colDefault
-		C.use_default_colors()
-	}
-	if theme.UseDefault {
-		FG = colDefault
-		BG = colDefault
-	} else {
-		FG = int(fg)
-		BG = int(bg)
-		C.assume_default_colors(C.int(override(baseTheme.Fg, theme.Fg)), C.int(bg))
-	}
-
-	currentFG := override(baseTheme.Current, theme.Current)
-	darkBG := override(baseTheme.DarkBg, theme.DarkBg)
-	CurrentFG = int(currentFG)
-	DarkBG = int(darkBG)
-	C.init_pair(ColPrompt, override(baseTheme.Prompt, theme.Prompt), bg)
-	C.init_pair(ColMatch, override(baseTheme.Match, theme.Match), bg)
-	C.init_pair(ColCurrent, currentFG, darkBG)
-	C.init_pair(ColCurrentMatch, override(baseTheme.CurrentMatch, theme.CurrentMatch), darkBG)
-	C.init_pair(ColSpinner, override(baseTheme.Spinner, theme.Spinner), bg)
-	C.init_pair(ColInfo, override(baseTheme.Info, theme.Info), bg)
-	C.init_pair(ColCursor, override(baseTheme.Cursor, theme.Cursor), darkBG)
-	C.init_pair(ColSelected, override(baseTheme.Selected, theme.Selected), darkBG)
-	C.init_pair(ColHeader, override(baseTheme.Header, theme.Header), bg)
-	C.init_pair(ColBorder, override(baseTheme.Border, theme.Border), bg)
-}
-
-func Close() {
-	C.endwin()
-	C.delscreen(_screen)
-}
-
-func GetBytes() []byte {
-	c := getch(false)
-	_buf = append(_buf, byte(c))
-
-	for {
-		c = getch(true)
-		if c == -1 {
-			break
-		}
-		_buf = append(_buf, byte(c))
-	}
-
-	return _buf
-}
-
-// 27 (91 79) 77 type x y
-func mouseSequence(sz *int) Event {
-	if len(_buf) < 6 {
-		return Event{Invalid, 0, nil}
-	}
-	*sz = 6
-	switch _buf[3] {
-	case 32, 36, 40, 48, // mouse-down / shift / cmd / ctrl
-		35, 39, 43, 51: // mouse-up / shift / cmd / ctrl
-		mod := _buf[3] >= 36
-		down := _buf[3]%2 == 0
-		x := int(_buf[4] - 33)
-		y := int(_buf[5] - 33)
-		double := false
-		if down {
-			now := time.Now()
-			if now.Sub(_prevDownTime) < doubleClickDuration {
-				_clickY = append(_clickY, y)
-			} else {
-				_clickY = []int{y}
-			}
-			_prevDownTime = now
-		} else {
-			if len(_clickY) > 1 && _clickY[0] == _clickY[1] &&
-				time.Now().Sub(_prevDownTime) < doubleClickDuration {
-				double = true
-			}
-		}
-		return Event{Mouse, 0, &MouseEvent{y, x, 0, down, double, mod}}
-	case 96, 100, 104, 112, // scroll-up / shift / cmd / ctrl
-		97, 101, 105, 113: // scroll-down / shift / cmd / ctrl
-		mod := _buf[3] >= 100
-		s := 1 - int(_buf[3]%2)*2
-		x := int(_buf[4] - 33)
-		y := int(_buf[5] - 33)
-		return Event{Mouse, 0, &MouseEvent{y, x, s, false, false, mod}}
-	}
-	return Event{Invalid, 0, nil}
-}
-
-func escSequence(sz *int) Event {
-	if len(_buf) < 2 {
-		return Event{ESC, 0, nil}
-	}
-	*sz = 2
-	switch _buf[1] {
-	case 13:
-		return Event{AltEnter, 0, nil}
-	case 32:
-		return Event{AltSpace, 0, nil}
-	case 47:
-		return Event{AltSlash, 0, nil}
-	case 98:
-		return Event{AltB, 0, nil}
-	case 100:
-		return Event{AltD, 0, nil}
-	case 102:
-		return Event{AltF, 0, nil}
-	case 127:
-		return Event{AltBS, 0, nil}
-	case 91, 79:
-		if len(_buf) < 3 {
-			return Event{Invalid, 0, nil}
-		}
-		*sz = 3
-		switch _buf[2] {
-		case 68:
-			return Event{Left, 0, nil}
-		case 67:
-			return Event{Right, 0, nil}
-		case 66:
-			return Event{Down, 0, nil}
-		case 65:
-			return Event{Up, 0, nil}
-		case 90:
-			return Event{BTab, 0, nil}
-		case 72:
-			return Event{Home, 0, nil}
-		case 70:
-			return Event{End, 0, nil}
-		case 77:
-			return mouseSequence(sz)
-		case 80:
-			return Event{F1, 0, nil}
-		case 81:
-			return Event{F2, 0, nil}
-		case 82:
-			return Event{F3, 0, nil}
-		case 83:
-			return Event{F4, 0, nil}
-		case 49, 50, 51, 52, 53, 54:
-			if len(_buf) < 4 {
-				return Event{Invalid, 0, nil}
-			}
-			*sz = 4
-			switch _buf[2] {
-			case 50:
-				if len(_buf) == 5 && _buf[4] == 126 {
-					*sz = 5
-					switch _buf[3] {
-					case 48:
-						return Event{F9, 0, nil}
-					case 49:
-						return Event{F10, 0, nil}
-					}
-				}
-				// Bracketed paste mode \e[200~ / \e[201
-				if _buf[3] == 48 && (_buf[4] == 48 || _buf[4] == 49) && _buf[5] == 126 {
-					*sz = 6
-					return Event{Invalid, 0, nil}
-				}
-				return Event{Invalid, 0, nil} // INS
-			case 51:
-				return Event{Del, 0, nil}
-			case 52:
-				return Event{End, 0, nil}
-			case 53:
-				return Event{PgUp, 0, nil}
-			case 54:
-				return Event{PgDn, 0, nil}
-			case 49:
-				switch _buf[3] {
-				case 126:
-					return Event{Home, 0, nil}
-				case 53, 55, 56, 57:
-					if len(_buf) == 5 && _buf[4] == 126 {
-						*sz = 5
-						switch _buf[3] {
-						case 53:
-							return Event{F5, 0, nil}
-						case 55:
-							return Event{F6, 0, nil}
-						case 56:
-							return Event{F7, 0, nil}
-						case 57:
-							return Event{F8, 0, nil}
-						}
-					}
-					return Event{Invalid, 0, nil}
-				case 59:
-					if len(_buf) != 6 {
-						return Event{Invalid, 0, nil}
-					}
-					*sz = 6
-					switch _buf[4] {
-					case 50:
-						switch _buf[5] {
-						case 68:
-							return Event{Home, 0, nil}
-						case 67:
-							return Event{End, 0, nil}
-						}
-					case 53:
-						switch _buf[5] {
-						case 68:
-							return Event{SLeft, 0, nil}
-						case 67:
-							return Event{SRight, 0, nil}
-						}
-					} // _buf[4]
-				} // _buf[3]
-			} // _buf[2]
-		} // _buf[2]
-	} // _buf[1]
-	if _buf[1] >= 'a' && _buf[1] <= 'z' {
-		return Event{AltA + int(_buf[1]) - 'a', 0, nil}
-	}
-	return Event{Invalid, 0, nil}
-}
-
-func GetChar() Event {
-	if len(_buf) == 0 {
-		_buf = GetBytes()
-	}
-	if len(_buf) == 0 {
-		panic("Empty _buffer")
-	}
-
-	sz := 1
-	defer func() {
-		_buf = _buf[sz:]
-	}()
-
-	switch _buf[0] {
-	case CtrlC:
-		return Event{CtrlC, 0, nil}
-	case CtrlG:
-		return Event{CtrlG, 0, nil}
-	case CtrlQ:
-		return Event{CtrlQ, 0, nil}
-	case 127:
-		return Event{BSpace, 0, nil}
-	case ESC:
-		return escSequence(&sz)
-	}
-
-	// CTRL-A ~ CTRL-Z
-	if _buf[0] <= CtrlZ {
-		return Event{int(_buf[0]), 0, nil}
-	}
-	r, rsz := utf8.DecodeRune(_buf)
-	if r == utf8.RuneError {
-		return Event{ESC, 0, nil}
-	}
-	sz = rsz
-	return Event{Rune, r, nil}
-}
-
-func (w *Window) Close() {
-	C.delwin(w.win)
-}
-
-func (w *Window) Enclose(y int, x int) bool {
-	return bool(C.wenclose(w.win, C.int(y), C.int(x)))
-}
-
-func (w *Window) Move(y int, x int) {
-	C.wmove(w.win, C.int(y), C.int(x))
-}
-
-func (w *Window) MoveAndClear(y int, x int) {
-	w.Move(y, x)
-	C.wclrtoeol(w.win)
-}
-
-func (w *Window) Print(text string) {
-	C.waddstr(w.win, C.CString(strings.Map(func(r rune) rune {
-		if r < 32 {
-			return -1
-		}
-		return r
-	}, text)))
-}
-
-func (w *Window) CPrint(pair int, bold bool, text string) {
-	attr := _color(pair, bold)
-	C.wattron(w.win, attr)
-	w.Print(text)
-	C.wattroff(w.win, attr)
-}
-
-func Clear() {
-	C.clear()
-}
-
-func Endwin() {
-	C.endwin()
-}
-
-func Refresh() {
-	C.refresh()
-}
-
-func (w *Window) Erase() {
-	C.werase(w.win)
-}
-
-func (w *Window) Fill(str string) bool {
-	return C.waddstr(w.win, C.CString(str)) == C.OK
-}
-
-func (w *Window) CFill(str string, fg int, bg int, bold bool) bool {
-	attr := _color(PairFor(fg, bg), bold)
-	C.wattron(w.win, attr)
-	ret := w.Fill(str)
-	C.wattroff(w.win, attr)
-	return ret
-}
-
-func (w *Window) Refresh() {
-	C.wnoutrefresh(w.win)
-}
-
-func DoUpdate() {
-	C.doupdate()
-}
-
-func PairFor(fg int, bg int) int {
-	key := (fg << 8) + bg
-	if found, prs := _colorMap[key]; prs {
-		return found
-	}
-
-	id := len(_colorMap) + ColUser
-	C.init_pair(C.short(id), C.short(fg), C.short(bg))
-	_colorMap[key] = id
-	return id
-}

src/curses/curses_test.go

@@ -1,14 +0,0 @@
-package curses
-
-import (
-	"testing"
-)
-
-func TestPairFor(t *testing.T) {
-	if PairFor(30, 50) != PairFor(30, 50) {
-		t.Fail()
-	}
-	if PairFor(-1, 10) != PairFor(-1, 10) {
-		t.Fail()
-	}
-}

src/history_test.go

@@ -1,7 +1,10 @@
 package fzf
 
 import (
+	"io/ioutil"
+	"os"
 	"os/user"
+	"runtime"
 	"testing"
 )
 
@@ -10,23 +13,34 @@ func TestHistory(t *testing.T) {
 
 	// Invalid arguments
 	user, _ := user.Current()
-	paths := []string{"/etc", "/proc"}
-	if user.Name != "root" {
-		paths = append(paths, "/etc/sudoers")
+	var paths []string
+	if runtime.GOOS == "windows" {
+		// GOPATH should exist, so we shouldn't be able to override it
+		paths = []string{os.Getenv("GOPATH")}
+	} else {
+		paths = []string{"/etc", "/proc"}
+		if user.Name != "root" {
+			paths = append(paths, "/etc/sudoers")
+		}
 	}
+
 	for _, path := range paths {
 		if _, e := NewHistory(path, maxHistory); e == nil {
 			t.Error("Error expected for: " + path)
 		}
 	}
+
+	f, _ := ioutil.TempFile("", "fzf-history")
+	f.Close()
+
 	{ // Append lines
-		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		h, _ := NewHistory(f.Name(), maxHistory)
 		for i := 0; i < maxHistory+10; i++ {
 			h.append("foobar")
 		}
 	}
 	{ // Read lines
-		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		h, _ := NewHistory(f.Name(), maxHistory)
 		if len(h.lines) != maxHistory+1 {
 			t.Errorf("Expected: %d, actual: %d\n", maxHistory+1, len(h.lines))
 		}
@@ -37,13 +51,13 @@ func TestHistory(t *testing.T) {
 		}
 	}
 	{ // Append lines
-		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		h, _ := NewHistory(f.Name(), maxHistory)
 		h.append("barfoo")
 		h.append("")
 		h.append("foobarbaz")
 	}
 	{ // Read lines again
-		h, _ := NewHistory("/tmp/fzf-history", maxHistory)
+		h, _ := NewHistory(f.Name(), maxHistory)
 		if len(h.lines) != maxHistory+1 {
 			t.Errorf("Expected: %d, actual: %d\n", maxHistory+1, len(h.lines))
 		}

src/matcher.go

@@ -26,6 +26,7 @@ type Matcher struct {
 	eventBox       *util.EventBox
 	reqBox         *util.EventBox
 	partitions     int
+	slab           []*util.Slab
 	mergerCache    map[string]*Merger
 }
 
@@ -37,13 +38,15 @@ const (
 // NewMatcher returns a new Matcher
 func NewMatcher(patternBuilder func([]rune) *Pattern,
 	sort bool, tac bool, eventBox *util.EventBox) *Matcher {
+	partitions := util.Min(numPartitionsMultiplier*runtime.NumCPU(), maxPartitions)
 	return &Matcher{
 		patternBuilder: patternBuilder,
 		sort:           sort,
 		tac:            tac,
 		eventBox:       eventBox,
 		reqBox:         util.NewEventBox(),
-		partitions:     util.Min(8*runtime.NumCPU(), 32),
+		partitions:     partitions,
+		slab:           make([]*util.Slab, partitions),
 		mergerCache:    make(map[string]*Merger)}
 }
 
@@ -153,12 +156,15 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 
 	for idx, chunks := range slices {
 		waitGroup.Add(1)
-		go func(idx int, chunks []*Chunk) {
+		if m.slab[idx] == nil {
+			m.slab[idx] = util.MakeSlab(slab16Size, slab32Size)
+		}
+		go func(idx int, slab *util.Slab, chunks []*Chunk) {
 			defer func() { waitGroup.Done() }()
 			count := 0
 			allMatches := make([][]*Result, len(chunks))
 			for idx, chunk := range chunks {
-				matches := request.pattern.Match(chunk)
+				matches := request.pattern.Match(chunk, slab)
 				allMatches[idx] = matches
 				count += len(matches)
 				if cancelled.Get() {
@@ -178,7 +184,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 				}
 			}
 			resultChan <- partialResult{idx, sliceMatches}
-		}(idx, chunks)
+		}(idx, m.slab[idx], chunks)
 	}
 
 	wait := func() bool {

src/options.go

@@ -8,7 +8,9 @@ import (
 	"strings"
 	"unicode/utf8"
 
-	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/algo"
+	"github.com/junegunn/fzf/src/tui"
+	"github.com/junegunn/fzf/src/util"
 
 	"github.com/junegunn/go-shellwords"
 )
@@ -19,8 +21,10 @@ const usage = `usage: fzf [options]
     -x, --extended        Extended-search mode
                           (enabled by default; +x or --no-extended to disable)
     -e, --exact           Enable Exact-match
+    --algo=TYPE           Fuzzy matching algorithm: [v1|v2] (default: v2)
     -i                    Case-insensitive match (default: smart-case match)
     +i                    Case-sensitive match
+    --literal             Do not normalize latin script letters before matching
     -n, --nth=N[,..]      Comma-separated list of field index expressions
                           for limiting search scope. Each can be a non-zero
                           integer or a range expression ([BEGIN]..[END]).
@@ -41,9 +45,14 @@ const usage = `usage: fzf [options]
     --no-hscroll          Disable horizontal scroll
     --hscroll-off=COL     Number of screen columns to keep to the right of the
                           highlighted substring (default: 10)
+    --filepath-word       Make word-wise movements respect path separators
     --jump-labels=CHARS   Label characters for jump and jump-accept
 
   Layout
+    --height=HEIGHT[%]    Display fzf window below the cursor with the given
+                          height instead of using fullscreen
+    --min-height=HEIGHT   Minimum height when --height is given in percent
+                          (default: 10)
     --reverse             Reverse orientation
     --margin=MARGIN       Screen margin (TRBL / TB,RL / T,RL,B / T,R,B,L)
     --inline-info         Display finder info inline with the query
@@ -55,6 +64,7 @@ const usage = `usage: fzf [options]
     --ansi                Enable processing of ANSI color codes
     --tabstop=SPACES      Number of spaces for a tab character (default: 8)
     --color=COLSPEC       Base scheme (dark|light|16|bw) and/or custom colors
+    --no-bold             Do not use bold text
 
   History
     --history=FILE        History file
@@ -63,7 +73,7 @@ const usage = `usage: fzf [options]
   Preview
     --preview=COMMAND     Command to preview highlighted line ({})
     --preview-window=OPT  Preview window layout (default: right:50%)
-                          [up|down|left|right][:SIZE[%]][:hidden]
+                          [up|down|left|right][:SIZE[%]][:wrap][:hidden]
 
   Scripting
     -q, --query=STR       Start the finder with the given query
@@ -94,8 +104,7 @@ const (
 type criterion int
 
 const (
-	byMatchLen criterion = iota
-	byBonus
+	byScore criterion = iota
 	byLength
 	byBegin
 	byEnd
@@ -124,13 +133,16 @@ type previewOpts struct {
 	position windowPosition
 	size     sizeSpec
 	hidden   bool
+	wrap     bool
 }
 
 // Options stores the values of command-line options
 type Options struct {
 	Fuzzy       bool
+	FuzzyAlgo   algo.Algo
 	Extended    bool
 	Case        Case
+	Normalize   bool
 	Nth         []Range
 	WithNth     []Range
 	Delimiter   Delimiter
@@ -140,12 +152,16 @@ type Options struct {
 	Multi       bool
 	Ansi        bool
 	Mouse       bool
-	Theme       *curses.ColorTheme
+	Theme       *tui.ColorTheme
 	Black       bool
+	Bold        bool
+	Height      sizeSpec
+	MinHeight   int
 	Reverse     bool
 	Cycle       bool
 	Hscroll     bool
 	HscrollOff  int
+	FileWord    bool
 	InlineInfo  bool
 	JumpLabels  string
 	Prompt      string
@@ -160,6 +176,7 @@ type Options struct {
 	Preview     previewOpts
 	PrintQuery  bool
 	ReadZero    bool
+	Printer     func(string)
 	Sync        bool
 	History     *History
 	Header      []string
@@ -172,23 +189,28 @@ type Options struct {
 func defaultOptions() *Options {
 	return &Options{
 		Fuzzy:       true,
+		FuzzyAlgo:   algo.FuzzyMatchV2,
 		Extended:    true,
 		Case:        CaseSmart,
+		Normalize:   true,
 		Nth:         make([]Range, 0),
 		WithNth:     make([]Range, 0),
 		Delimiter:   Delimiter{},
 		Sort:        1000,
 		Tac:         false,
-		Criteria:    []criterion{byMatchLen, byBonus, byLength},
+		Criteria:    []criterion{byScore, byLength},
 		Multi:       false,
 		Ansi:        false,
 		Mouse:       true,
-		Theme:       curses.EmptyTheme(),
+		Theme:       tui.EmptyTheme(),
 		Black:       false,
+		Bold:        true,
+		MinHeight:   10,
 		Reverse:     false,
 		Cycle:       false,
 		Hscroll:     true,
 		HscrollOff:  10,
+		FileWord:    false,
 		InlineInfo:  false,
 		JumpLabels:  defaultJumpLabels,
 		Prompt:      "> ",
@@ -200,9 +222,10 @@ func defaultOptions() *Options {
 		Expect:      make(map[int]string),
 		Keymap:      make(map[int]actionType),
 		Execmap:     make(map[int]string),
-		Preview:     previewOpts{"", posRight, sizeSpec{50, true}, false},
+		Preview:     previewOpts{"", posRight, sizeSpec{50, true}, false, false},
 		PrintQuery:  false,
 		ReadZero:    false,
+		Printer:     func(str string) { fmt.Println(str) },
 		Sync:        false,
 		History:     nil,
 		Header:      make([]string, 0),
@@ -241,7 +264,7 @@ func nextString(args []string, i *int, message string) string {
 }
 
 func optionalNextString(args []string, i *int) string {
-	if len(args) > *i+1 {
+	if len(args) > *i+1 && !strings.HasPrefix(args[*i+1], "-") {
 		*i++
 		return args[*i]
 	}
@@ -322,6 +345,22 @@ func isAlphabet(char uint8) bool {
 	return char >= 'a' && char <= 'z'
 }
 
+func isNumeric(char uint8) bool {
+	return char >= '0' && char <= '9'
+}
+
+func parseAlgo(str string) algo.Algo {
+	switch str {
+	case "v1":
+		return algo.FuzzyMatchV1
+	case "v2":
+		return algo.FuzzyMatchV2
+	default:
+		errorExit("invalid algorithm (expected: v1 or v2)")
+	}
+	return algo.FuzzyMatchV2
+}
+
 func parseKeyChords(str string, message string) map[int]string {
 	if len(str) == 0 {
 		errorExit(message)
@@ -341,60 +380,66 @@ func parseKeyChords(str string, message string) map[int]string {
 		chord := 0
 		switch lkey {
 		case "up":
-			chord = curses.Up
+			chord = tui.Up
 		case "down":
-			chord = curses.Down
+			chord = tui.Down
 		case "left":
-			chord = curses.Left
+			chord = tui.Left
 		case "right":
-			chord = curses.Right
+			chord = tui.Right
 		case "enter", "return":
-			chord = curses.CtrlM
+			chord = tui.CtrlM
 		case "space":
-			chord = curses.AltZ + int(' ')
+			chord = tui.AltZ + int(' ')
 		case "bspace", "bs":
-			chord = curses.BSpace
+			chord = tui.BSpace
 		case "alt-enter", "alt-return":
-			chord = curses.AltEnter
+			chord = tui.AltEnter
 		case "alt-space":
-			chord = curses.AltSpace
+			chord = tui.AltSpace
 		case "alt-/":
-			chord = curses.AltSlash
+			chord = tui.AltSlash
 		case "alt-bs", "alt-bspace":
-			chord = curses.AltBS
+			chord = tui.AltBS
 		case "tab":
-			chord = curses.Tab
+			chord = tui.Tab
 		case "btab", "shift-tab":
-			chord = curses.BTab
+			chord = tui.BTab
 		case "esc":
-			chord = curses.ESC
+			chord = tui.ESC
 		case "del":
-			chord = curses.Del
+			chord = tui.Del
 		case "home":
-			chord = curses.Home
+			chord = tui.Home
 		case "end":
-			chord = curses.End
+			chord = tui.End
 		case "pgup", "page-up":
-			chord = curses.PgUp
+			chord = tui.PgUp
 		case "pgdn", "page-down":
-			chord = curses.PgDn
+			chord = tui.PgDn
 		case "shift-left":
-			chord = curses.SLeft
+			chord = tui.SLeft
 		case "shift-right":
-			chord = curses.SRight
+			chord = tui.SRight
 		case "double-click":
-			chord = curses.DoubleClick
+			chord = tui.DoubleClick
 		case "f10":
-			chord = curses.F10
+			chord = tui.F10
+		case "f11":
+			chord = tui.F11
+		case "f12":
+			chord = tui.F12
 		default:
 			if len(key) == 6 && strings.HasPrefix(lkey, "ctrl-") && isAlphabet(lkey[5]) {
-				chord = curses.CtrlA + int(lkey[5]) - 'a'
+				chord = tui.CtrlA + int(lkey[5]) - 'a'
 			} else if len(key) == 5 && strings.HasPrefix(lkey, "alt-") && isAlphabet(lkey[4]) {
-				chord = curses.AltA + int(lkey[4]) - 'a'
+				chord = tui.AltA + int(lkey[4]) - 'a'
+			} else if len(key) == 5 && strings.HasPrefix(lkey, "alt-") && isNumeric(lkey[4]) {
+				chord = tui.Alt0 + int(lkey[4]) - '0'
 			} else if len(key) == 2 && strings.HasPrefix(lkey, "f") && key[1] >= '1' && key[1] <= '9' {
-				chord = curses.F1 + int(key[1]) - '1'
+				chord = tui.F1 + int(key[1]) - '1'
 			} else if utf8.RuneCountInString(key) == 1 {
-				chord = curses.AltZ + int([]rune(key)[0])
+				chord = tui.AltZ + int([]rune(key)[0])
 			} else {
 				errorExit("unsupported key: " + key)
 			}
@@ -407,7 +452,7 @@ func parseKeyChords(str string, message string) map[int]string {
 }
 
 func parseTiebreak(str string) []criterion {
-	criteria := []criterion{byMatchLen, byBonus}
+	criteria := []criterion{byScore}
 	hasIndex := false
 	hasLength := false
 	hasBegin := false
@@ -441,7 +486,7 @@ func parseTiebreak(str string) []criterion {
 	return criteria
 }
 
-func dupeTheme(theme *curses.ColorTheme) *curses.ColorTheme {
+func dupeTheme(theme *tui.ColorTheme) *tui.ColorTheme {
 	if theme != nil {
 		dupe := *theme
 		return &dupe
@@ -449,16 +494,17 @@ func dupeTheme(theme *curses.ColorTheme) *curses.ColorTheme {
 	return nil
 }
 
-func parseTheme(defaultTheme *curses.ColorTheme, str string) *curses.ColorTheme {
+func parseTheme(defaultTheme *tui.ColorTheme, str string) *tui.ColorTheme {
 	theme := dupeTheme(defaultTheme)
+	rrggbb := regexp.MustCompile("^#[0-9a-fA-F]{6}$")
 	for _, str := range strings.Split(strings.ToLower(str), ",") {
 		switch str {
 		case "dark":
-			theme = dupeTheme(curses.Dark256)
+			theme = dupeTheme(tui.Dark256)
 		case "light":
-			theme = dupeTheme(curses.Light256)
+			theme = dupeTheme(tui.Light256)
 		case "16":
-			theme = dupeTheme(curses.Default16)
+			theme = dupeTheme(tui.Default16)
 		case "bw", "no":
 			theme = nil
 		default:
@@ -474,18 +520,22 @@ func parseTheme(defaultTheme *curses.ColorTheme, str string) *curses.ColorTheme
 			if len(pair) != 2 {
 				fail()
 			}
-			ansi32, err := strconv.Atoi(pair[1])
-			if err != nil || ansi32 < -1 || ansi32 > 255 {
-				fail()
+
+			var ansi tui.Color
+			if rrggbb.MatchString(pair[1]) {
+				ansi = tui.HexToColor(pair[1])
+			} else {
+				ansi32, err := strconv.Atoi(pair[1])
+				if err != nil || ansi32 < -1 || ansi32 > 255 {
+					fail()
+				}
+				ansi = tui.Color(ansi32)
 			}
-			ansi := int16(ansi32)
 			switch pair[0] {
 			case "fg":
 				theme.Fg = ansi
-				theme.UseDefault = theme.UseDefault && ansi < 0
 			case "bg":
 				theme.Bg = ansi
-				theme.UseDefault = theme.UseDefault && ansi < 0
 			case "fg+":
 				theme.Current = ansi
 			case "bg+":
@@ -557,9 +607,9 @@ func parseKeymap(keymap map[int]actionType, execmap map[int]string, str string)
 		}
 		var key int
 		if len(pair[0]) == 1 && pair[0][0] == escapedColon {
-			key = ':' + curses.AltZ
+			key = ':' + tui.AltZ
 		} else if len(pair[0]) == 1 && pair[0][0] == escapedComma {
-			key = ',' + curses.AltZ
+			key = ',' + tui.AltZ
 		} else {
 			keys := parseKeyChords(pair[0], "key name required")
 			key = firstKey(keys)
@@ -646,6 +696,14 @@ func parseKeymap(keymap map[int]actionType, execmap map[int]string, str string)
 			keymap[key] = actTogglePreview
 		case "toggle-sort":
 			keymap[key] = actToggleSort
+		case "preview-up":
+			keymap[key] = actPreviewUp
+		case "preview-down":
+			keymap[key] = actPreviewDown
+		case "preview-page-up":
+			keymap[key] = actPreviewPageUp
+		case "preview-page-down":
+			keymap[key] = actPreviewPageDown
 		default:
 			if isExecuteAction(actLower) {
 				var offset int
@@ -723,40 +781,52 @@ func parseSize(str string, maxPercent float64, label string) sizeSpec {
 	return sizeSpec{val, percent}
 }
 
+func parseHeight(str string) sizeSpec {
+	if util.IsWindows() {
+		errorExit("--height options is currently not supported on Windows")
+	}
+	size := parseSize(str, 100, "height")
+	return size
+}
+
 func parsePreviewWindow(opts *previewOpts, input string) {
-	layout := input
+	// Default
+	opts.position = posRight
+	opts.size = sizeSpec{50, true}
 	opts.hidden = false
-	if strings.HasSuffix(layout, ":hidden") {
-		opts.hidden = true
-		layout = strings.TrimSuffix(layout, ":hidden")
-	}
+	opts.wrap = false
 
-	tokens := strings.Split(layout, ":")
-	if len(tokens) == 0 || len(tokens) > 2 {
-		errorExit("invalid window layout: " + input)
-	}
-
-	if len(tokens) > 1 {
-		opts.size = parseSize(tokens[1], 99, "window size")
-	} else {
-		opts.size = sizeSpec{50, true}
+	tokens := strings.Split(input, ":")
+	sizeRegex := regexp.MustCompile("^[1-9][0-9]*%?$")
+	for _, token := range tokens {
+		switch token {
+		case "hidden":
+			opts.hidden = true
+		case "wrap":
+			opts.wrap = true
+		case "up", "top":
+			opts.position = posUp
+		case "down", "bottom":
+			opts.position = posDown
+		case "left":
+			opts.position = posLeft
+		case "right":
+			opts.position = posRight
+		default:
+			if sizeRegex.MatchString(token) {
+				opts.size = parseSize(token, 99, "window size")
+			} else {
+				errorExit("invalid preview window layout: " + input)
+			}
+		}
 	}
 	if !opts.size.percent && opts.size.size > 0 {
 		// Adjust size for border
 		opts.size.size += 2
-	}
-
-	switch tokens[0] {
-	case "up":
-		opts.position = posUp
-	case "down":
-		opts.position = posDown
-	case "left":
-		opts.position = posLeft
-	case "right":
-		opts.position = posRight
-	default:
-		errorExit("invalid window position: " + input)
+		// And padding
+		if opts.position == posLeft || opts.position == posRight {
+			opts.size.size += 2
+		}
 	}
 }
 
@@ -834,6 +904,12 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "-f", "--filter":
 			filter := nextString(allArgs, &i, "query string required")
 			opts.Filter = &filter
+		case "--literal":
+			opts.Normalize = false
+		case "--no-literal":
+			opts.Normalize = true
+		case "--algo":
+			opts.FuzzyAlgo = parseAlgo(nextString(allArgs, &i, "algorithm required (v1|v2)"))
 		case "--expect":
 			opts.Expect = parseKeyChords(nextString(allArgs, &i, "key names required"), "key names required")
 		case "--tiebreak":
@@ -843,7 +919,7 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--color":
 			spec := optionalNextString(allArgs, &i)
 			if len(spec) == 0 {
-				opts.Theme = curses.EmptyTheme()
+				opts.Theme = tui.EmptyTheme()
 			} else {
 				opts.Theme = parseTheme(opts.Theme, spec)
 			}
@@ -880,11 +956,15 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "+c", "--no-color":
 			opts.Theme = nil
 		case "+2", "--no-256":
-			opts.Theme = curses.Default16
+			opts.Theme = tui.Default16
 		case "--black":
 			opts.Black = true
 		case "--no-black":
 			opts.Black = false
+		case "--bold":
+			opts.Bold = true
+		case "--no-bold":
+			opts.Bold = false
 		case "--reverse":
 			opts.Reverse = true
 		case "--no-reverse":
@@ -899,6 +979,10 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.Hscroll = false
 		case "--hscroll-off":
 			opts.HscrollOff = nextInt(allArgs, &i, "hscroll offset required")
+		case "--filepath-word":
+			opts.FileWord = true
+		case "--no-filepath-word":
+			opts.FileWord = false
 		case "--inline-info":
 			opts.InlineInfo = true
 		case "--no-inline-info":
@@ -918,6 +1002,10 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.ReadZero = true
 		case "--no-read0":
 			opts.ReadZero = false
+		case "--print0":
+			opts.Printer = func(str string) { fmt.Print(str, "\x00") }
+		case "--no-print0":
+			opts.Printer = func(str string) { fmt.Println(str) }
 		case "--print-query":
 			opts.PrintQuery = true
 		case "--no-print-query":
@@ -951,7 +1039,13 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.Preview.command = ""
 		case "--preview-window":
 			parsePreviewWindow(&opts.Preview,
-				nextString(allArgs, &i, "preview window layout required: [up|down|left|right][:SIZE[%]]"))
+				nextString(allArgs, &i, "preview window layout required: [up|down|left|right][:SIZE[%]][:wrap][:hidden]"))
+		case "--height":
+			opts.Height = parseHeight(nextString(allArgs, &i, "height required: HEIGHT[%]"))
+		case "--min-height":
+			opts.MinHeight = nextInt(allArgs, &i, "height required: HEIGHT")
+		case "--no-height":
+			opts.Height = sizeSpec{}
 		case "--no-margin":
 			opts.Margin = defaultMargin()
 		case "--margin":
@@ -962,7 +1056,9 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--version":
 			opts.Version = true
 		default:
-			if match, value := optString(arg, "-q", "--query="); match {
+			if match, value := optString(arg, "--algo="); match {
+				opts.FuzzyAlgo = parseAlgo(value)
+			} else if match, value := optString(arg, "-q", "--query="); match {
 				opts.Query = value
 			} else if match, value := optString(arg, "-f", "--filter="); match {
 				opts.Filter = &value
@@ -976,6 +1072,10 @@ func parseOptions(opts *Options, allArgs []string) {
 				opts.WithNth = splitNth(value)
 			} else if match, _ := optString(arg, "-s", "--sort="); match {
 				opts.Sort = 1 // Don't care
+			} else if match, value := optString(arg, "--height="); match {
+				opts.Height = parseHeight(value)
+			} else if match, value := optString(arg, "--min-height="); match {
+				opts.MinHeight = atoi(value)
 			} else if match, value := optString(arg, "--toggle-sort="); match {
 				parseToggleSort(opts.Keymap, value)
 			} else if match, value := optString(arg, "--expect="); match {
@@ -1040,11 +1140,11 @@ func parseOptions(opts *Options, allArgs []string) {
 func postProcessOptions(opts *Options) {
 	// Default actions for CTRL-N / CTRL-P when --history is set
 	if opts.History != nil {
-		if _, prs := opts.Keymap[curses.CtrlP]; !prs {
-			opts.Keymap[curses.CtrlP] = actPreviousHistory
+		if _, prs := opts.Keymap[tui.CtrlP]; !prs {
+			opts.Keymap[tui.CtrlP] = actPreviousHistory
 		}
-		if _, prs := opts.Keymap[curses.CtrlN]; !prs {
-			opts.Keymap[curses.CtrlN] = actNextHistory
+		if _, prs := opts.Keymap[tui.CtrlN]; !prs {
+			opts.Keymap[tui.CtrlN] = actNextHistory
 		}
 	}
 

src/options_test.go

@@ -2,9 +2,10 @@ package fzf
 
 import (
 	"fmt"
+	"io/ioutil"
 	"testing"
 
-	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/tui"
 	"github.com/junegunn/fzf/src/util"
 )
 
@@ -133,48 +134,48 @@ func TestParseKeys(t *testing.T) {
 	if len(pairs) != 11 {
 		t.Error(11)
 	}
-	check(curses.CtrlZ, "ctrl-z")
-	check(curses.AltZ, "alt-z")
-	check(curses.F2, "f2")
-	check(curses.AltZ+'@', "@")
-	check(curses.AltA, "Alt-a")
-	check(curses.AltZ+'!', "!")
-	check(curses.CtrlA+'g'-'a', "ctrl-G")
-	check(curses.AltZ+'J', "J")
-	check(curses.AltZ+'g', "g")
-	check(curses.AltEnter, "ALT-enter")
-	check(curses.AltSpace, "alt-SPACE")
+	check(tui.CtrlZ, "ctrl-z")
+	check(tui.AltZ, "alt-z")
+	check(tui.F2, "f2")
+	check(tui.AltZ+'@', "@")
+	check(tui.AltA, "Alt-a")
+	check(tui.AltZ+'!', "!")
+	check(tui.CtrlA+'g'-'a', "ctrl-G")
+	check(tui.AltZ+'J', "J")
+	check(tui.AltZ+'g', "g")
+	check(tui.AltEnter, "ALT-enter")
+	check(tui.AltSpace, "alt-SPACE")
 
 	// Synonyms
 	pairs = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
 	if len(pairs) != 9 {
 		t.Error(9)
 	}
-	check(curses.CtrlM, "Return")
-	check(curses.AltZ+' ', "space")
-	check(curses.Tab, "tab")
-	check(curses.BTab, "btab")
-	check(curses.ESC, "esc")
-	check(curses.Up, "up")
-	check(curses.Down, "down")
-	check(curses.Left, "left")
-	check(curses.Right, "right")
+	check(tui.CtrlM, "Return")
+	check(tui.AltZ+' ', "space")
+	check(tui.Tab, "tab")
+	check(tui.BTab, "btab")
+	check(tui.ESC, "esc")
+	check(tui.Up, "up")
+	check(tui.Down, "down")
+	check(tui.Left, "left")
+	check(tui.Right, "right")
 
 	pairs = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
 	if len(pairs) != 11 {
 		t.Error(11)
 	}
-	check(curses.Tab, "Ctrl-I")
-	check(curses.PgUp, "page-up")
-	check(curses.PgDn, "Page-Down")
-	check(curses.Home, "Home")
-	check(curses.End, "End")
-	check(curses.AltBS, "Alt-BSpace")
-	check(curses.SLeft, "shift-left")
-	check(curses.SRight, "shift-right")
-	check(curses.BTab, "shift-tab")
-	check(curses.CtrlM, "Enter")
-	check(curses.BSpace, "bspace")
+	check(tui.Tab, "Ctrl-I")
+	check(tui.PgUp, "page-up")
+	check(tui.PgDn, "Page-Down")
+	check(tui.Home, "Home")
+	check(tui.End, "End")
+	check(tui.AltBS, "Alt-BSpace")
+	check(tui.SLeft, "shift-left")
+	check(tui.SRight, "shift-right")
+	check(tui.BTab, "shift-tab")
+	check(tui.CtrlM, "Enter")
+	check(tui.BSpace, "bspace")
 }
 
 func TestParseKeysWithComma(t *testing.T) {
@@ -191,36 +192,36 @@ func TestParseKeysWithComma(t *testing.T) {
 
 	pairs := parseKeyChords(",", "")
 	checkN(len(pairs), 1)
-	check(pairs, curses.AltZ+',', ",")
+	check(pairs, tui.AltZ+',', ",")
 
 	pairs = parseKeyChords(",,a,b", "")
 	checkN(len(pairs), 3)
-	check(pairs, curses.AltZ+'a', "a")
-	check(pairs, curses.AltZ+'b', "b")
-	check(pairs, curses.AltZ+',', ",")
+	check(pairs, tui.AltZ+'a', "a")
+	check(pairs, tui.AltZ+'b', "b")
+	check(pairs, tui.AltZ+',', ",")
 
 	pairs = parseKeyChords("a,b,,", "")
 	checkN(len(pairs), 3)
-	check(pairs, curses.AltZ+'a', "a")
-	check(pairs, curses.AltZ+'b', "b")
-	check(pairs, curses.AltZ+',', ",")
+	check(pairs, tui.AltZ+'a', "a")
+	check(pairs, tui.AltZ+'b', "b")
+	check(pairs, tui.AltZ+',', ",")
 
 	pairs = parseKeyChords("a,,,b", "")
 	checkN(len(pairs), 3)
-	check(pairs, curses.AltZ+'a', "a")
-	check(pairs, curses.AltZ+'b', "b")
-	check(pairs, curses.AltZ+',', ",")
+	check(pairs, tui.AltZ+'a', "a")
+	check(pairs, tui.AltZ+'b', "b")
+	check(pairs, tui.AltZ+',', ",")
 
 	pairs = parseKeyChords("a,,,b,c", "")
 	checkN(len(pairs), 4)
-	check(pairs, curses.AltZ+'a', "a")
-	check(pairs, curses.AltZ+'b', "b")
-	check(pairs, curses.AltZ+'c', "c")
-	check(pairs, curses.AltZ+',', ",")
+	check(pairs, tui.AltZ+'a', "a")
+	check(pairs, tui.AltZ+'b', "b")
+	check(pairs, tui.AltZ+'c', "c")
+	check(pairs, tui.AltZ+',', ",")
 
 	pairs = parseKeyChords(",,,", "")
 	checkN(len(pairs), 1)
-	check(pairs, curses.AltZ+',', ",")
+	check(pairs, tui.AltZ+',', ",")
 }
 
 func TestBind(t *testing.T) {
@@ -236,41 +237,41 @@ func TestBind(t *testing.T) {
 	}
 	keymap := defaultKeymap()
 	execmap := make(map[int]string)
-	check(actBeginningOfLine, keymap[curses.CtrlA])
+	check(actBeginningOfLine, keymap[tui.CtrlA])
 	parseKeymap(keymap, execmap,
 		"ctrl-a:kill-line,ctrl-b:toggle-sort,c:page-up,alt-z:page-down,"+
 			"f1:execute(ls {}),f2:execute/echo {}, {}, {}/,f3:execute[echo '({})'],f4:execute;less {};,"+
 			"alt-a:execute@echo (,),[,],/,:,;,%,{}@,alt-b:execute;echo (,),[,],/,:,@,%,{};"+
 			",,:abort,::accept,X:execute:\nfoobar,Y:execute(baz)")
-	check(actKillLine, keymap[curses.CtrlA])
-	check(actToggleSort, keymap[curses.CtrlB])
-	check(actPageUp, keymap[curses.AltZ+'c'])
-	check(actAbort, keymap[curses.AltZ+','])
-	check(actAccept, keymap[curses.AltZ+':'])
-	check(actPageDown, keymap[curses.AltZ])
-	check(actExecute, keymap[curses.F1])
-	check(actExecute, keymap[curses.F2])
-	check(actExecute, keymap[curses.F3])
-	check(actExecute, keymap[curses.F4])
-	checkString("ls {}", execmap[curses.F1])
-	checkString("echo {}, {}, {}", execmap[curses.F2])
-	checkString("echo '({})'", execmap[curses.F3])
-	checkString("less {}", execmap[curses.F4])
-	checkString("echo (,),[,],/,:,;,%,{}", execmap[curses.AltA])
-	checkString("echo (,),[,],/,:,@,%,{}", execmap[curses.AltB])
-	checkString("\nfoobar,Y:execute(baz)", execmap[curses.AltZ+'X'])
+	check(actKillLine, keymap[tui.CtrlA])
+	check(actToggleSort, keymap[tui.CtrlB])
+	check(actPageUp, keymap[tui.AltZ+'c'])
+	check(actAbort, keymap[tui.AltZ+','])
+	check(actAccept, keymap[tui.AltZ+':'])
+	check(actPageDown, keymap[tui.AltZ])
+	check(actExecute, keymap[tui.F1])
+	check(actExecute, keymap[tui.F2])
+	check(actExecute, keymap[tui.F3])
+	check(actExecute, keymap[tui.F4])
+	checkString("ls {}", execmap[tui.F1])
+	checkString("echo {}, {}, {}", execmap[tui.F2])
+	checkString("echo '({})'", execmap[tui.F3])
+	checkString("less {}", execmap[tui.F4])
+	checkString("echo (,),[,],/,:,;,%,{}", execmap[tui.AltA])
+	checkString("echo (,),[,],/,:,@,%,{}", execmap[tui.AltB])
+	checkString("\nfoobar,Y:execute(baz)", execmap[tui.AltZ+'X'])
 
 	for idx, char := range []rune{'~', '!', '@', '#', '$', '%', '^', '&', '*', '|', ';', '/'} {
 		parseKeymap(keymap, execmap, fmt.Sprintf("%d:execute%cfoobar%c", idx%10, char, char))
-		checkString("foobar", execmap[curses.AltZ+int([]rune(fmt.Sprintf("%d", idx%10))[0])])
+		checkString("foobar", execmap[tui.AltZ+int([]rune(fmt.Sprintf("%d", idx%10))[0])])
 	}
 
 	parseKeymap(keymap, execmap, "f1:abort")
-	check(actAbort, keymap[curses.F1])
+	check(actAbort, keymap[tui.F1])
 }
 
 func TestColorSpec(t *testing.T) {
-	theme := curses.Dark256
+	theme := tui.Dark256
 	dark := parseTheme(theme, "dark")
 	if *dark != *theme {
 		t.Errorf("colors should be equivalent")
@@ -283,7 +284,7 @@ func TestColorSpec(t *testing.T) {
 	if *light == *theme {
 		t.Errorf("should not be equivalent")
 	}
-	if *light != *curses.Light256 {
+	if *light != *tui.Light256 {
 		t.Errorf("colors should be equivalent")
 	}
 	if light == theme {
@@ -294,29 +295,23 @@ func TestColorSpec(t *testing.T) {
 	if customized.Fg != 231 || customized.Bg != 232 {
 		t.Errorf("color not customized")
 	}
-	if *curses.Dark256 == *customized {
+	if *tui.Dark256 == *customized {
 		t.Errorf("colors should not be equivalent")
 	}
-	customized.Fg = curses.Dark256.Fg
-	customized.Bg = curses.Dark256.Bg
-	if *curses.Dark256 == *customized {
-		t.Errorf("colors should now be equivalent")
+	customized.Fg = tui.Dark256.Fg
+	customized.Bg = tui.Dark256.Bg
+	if *tui.Dark256 != *customized {
+		t.Errorf("colors should now be equivalent: %v, %v", tui.Dark256, customized)
 	}
 
 	customized = parseTheme(theme, "fg:231,dark,bg:232")
-	if customized.Fg != curses.Dark256.Fg || customized.Bg == curses.Dark256.Bg {
+	if customized.Fg != tui.Dark256.Fg || customized.Bg == tui.Dark256.Bg {
 		t.Errorf("color not customized")
 	}
-	if customized.UseDefault {
-		t.Errorf("not using default colors")
-	}
-	if !curses.Dark256.UseDefault {
-		t.Errorf("using default colors")
-	}
 }
 
 func TestParseNilTheme(t *testing.T) {
-	var theme *curses.ColorTheme
+	var theme *tui.ColorTheme
 	newTheme := parseTheme(theme, "prompt:12")
 	if newTheme != nil {
 		t.Errorf("color is disabled. keep it that way.")
@@ -336,21 +331,23 @@ func TestDefaultCtrlNP(t *testing.T) {
 			t.Error()
 		}
 	}
-	check([]string{}, curses.CtrlN, actDown)
-	check([]string{}, curses.CtrlP, actUp)
+	check([]string{}, tui.CtrlN, actDown)
+	check([]string{}, tui.CtrlP, actUp)
 
-	check([]string{"--bind=ctrl-n:accept"}, curses.CtrlN, actAccept)
-	check([]string{"--bind=ctrl-p:accept"}, curses.CtrlP, actAccept)
+	check([]string{"--bind=ctrl-n:accept"}, tui.CtrlN, actAccept)
+	check([]string{"--bind=ctrl-p:accept"}, tui.CtrlP, actAccept)
 
-	hist := "--history=/tmp/foo"
-	check([]string{hist}, curses.CtrlN, actNextHistory)
-	check([]string{hist}, curses.CtrlP, actPreviousHistory)
+	f, _ := ioutil.TempFile("", "fzf-history")
+	f.Close()
+	hist := "--history=" + f.Name()
+	check([]string{hist}, tui.CtrlN, actNextHistory)
+	check([]string{hist}, tui.CtrlP, actPreviousHistory)
 
-	check([]string{hist, "--bind=ctrl-n:accept"}, curses.CtrlN, actAccept)
-	check([]string{hist, "--bind=ctrl-n:accept"}, curses.CtrlP, actPreviousHistory)
+	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlN, actAccept)
+	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlP, actPreviousHistory)
 
-	check([]string{hist, "--bind=ctrl-p:accept"}, curses.CtrlN, actNextHistory)
-	check([]string{hist, "--bind=ctrl-p:accept"}, curses.CtrlP, actAccept)
+	check([]string{hist, "--bind=ctrl-p:accept"}, tui.CtrlN, actNextHistory)
+	check([]string{hist, "--bind=ctrl-p:accept"}, tui.CtrlP, actAccept)
 }
 
 func optsFor(words ...string) *Options {
@@ -381,26 +378,37 @@ func TestPreviewOpts(t *testing.T) {
 	opts := optsFor()
 	if !(opts.Preview.command == "" &&
 		opts.Preview.hidden == false &&
+		opts.Preview.wrap == false &&
 		opts.Preview.position == posRight &&
 		opts.Preview.size.percent == true &&
 		opts.Preview.size.size == 50) {
 		t.Error()
 	}
-	opts = optsFor("--preview", "cat {}", "--preview-window=left:15:hidden")
+	opts = optsFor("--preview", "cat {}", "--preview-window=left:15:hidden:wrap")
 	if !(opts.Preview.command == "cat {}" &&
 		opts.Preview.hidden == true &&
+		opts.Preview.wrap == true &&
 		opts.Preview.position == posLeft &&
 		opts.Preview.size.percent == false &&
-		opts.Preview.size.size == 15+2) {
+		opts.Preview.size.size == 15+2+2) {
 		t.Error(opts.Preview)
 	}
-
-	opts = optsFor("--preview-window=left:15:hidden", "--preview-window=down")
+	opts = optsFor("--preview-window=up:15:wrap:hidden", "--preview-window=down")
 	if !(opts.Preview.command == "" &&
 		opts.Preview.hidden == false &&
+		opts.Preview.wrap == false &&
 		opts.Preview.position == posDown &&
 		opts.Preview.size.percent == true &&
 		opts.Preview.size.size == 50) {
 		t.Error(opts.Preview)
 	}
+	opts = optsFor("--preview-window=up:15:wrap:hidden")
+	if !(opts.Preview.command == "" &&
+		opts.Preview.hidden == true &&
+		opts.Preview.wrap == true &&
+		opts.Preview.position == posUp &&
+		opts.Preview.size.percent == false &&
+		opts.Preview.size.size == 15+2) {
+		t.Error(opts.Preview)
+	}
 }

src/pattern.go

@@ -40,15 +40,17 @@ type termSet []term
 // Pattern represents search pattern
 type Pattern struct {
 	fuzzy         bool
+	fuzzyAlgo     algo.Algo
 	extended      bool
 	caseSensitive bool
+	normalize     bool
 	forward       bool
 	text          []rune
 	termSets      []termSet
 	cacheable     bool
 	delimiter     Delimiter
 	nth           []Range
-	procFun       map[termType]func(bool, bool, util.Chars, []rune) algo.Result
+	procFun       map[termType]algo.Algo
 }
 
 var (
@@ -74,7 +76,7 @@ func clearChunkCache() {
 }
 
 // BuildPattern builds Pattern object from the given arguments
-func BuildPattern(fuzzy bool, extended bool, caseMode Case, forward bool,
+func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
 	cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
 
 	var asString string
@@ -93,7 +95,7 @@ func BuildPattern(fuzzy bool, extended bool, caseMode Case, forward bool,
 	termSets := []termSet{}
 
 	if extended {
-		termSets = parseTerms(fuzzy, caseMode, asString)
+		termSets = parseTerms(fuzzy, caseMode, normalize, asString)
 	Loop:
 		for _, termSet := range termSets {
 			for idx, term := range termSet {
@@ -116,17 +118,19 @@ func BuildPattern(fuzzy bool, extended bool, caseMode Case, forward bool,
 
 	ptr := &Pattern{
 		fuzzy:         fuzzy,
+		fuzzyAlgo:     fuzzyAlgo,
 		extended:      extended,
 		caseSensitive: caseSensitive,
+		normalize:     normalize,
 		forward:       forward,
 		text:          []rune(asString),
 		termSets:      termSets,
 		cacheable:     cacheable,
 		nth:           nth,
 		delimiter:     delimiter,
-		procFun:       make(map[termType]func(bool, bool, util.Chars, []rune) algo.Result)}
+		procFun:       make(map[termType]algo.Algo)}
 
-	ptr.procFun[termFuzzy] = algo.FuzzyMatch
+	ptr.procFun[termFuzzy] = fuzzyAlgo
 	ptr.procFun[termEqual] = algo.EqualMatch
 	ptr.procFun[termExact] = algo.ExactMatchNaive
 	ptr.procFun[termPrefix] = algo.PrefixMatch
@@ -136,7 +140,7 @@ func BuildPattern(fuzzy bool, extended bool, caseMode Case, forward bool,
 	return ptr
 }
 
-func parseTerms(fuzzy bool, caseMode Case, str string) []termSet {
+func parseTerms(fuzzy bool, caseMode Case, normalize bool, str string) []termSet {
 	tokens := _splitRegex.Split(str, -1)
 	sets := []termSet{}
 	set := termSet{}
@@ -161,12 +165,13 @@ func parseTerms(fuzzy bool, caseMode Case, str string) []termSet {
 
 		if strings.HasPrefix(text, "!") {
 			inv = true
+			typ = termExact
 			text = text[1:]
 		}
 
 		if strings.HasPrefix(text, "'") {
 			// Flip exactness
-			if fuzzy {
+			if fuzzy && !inv {
 				typ = termExact
 				text = text[1:]
 			} else {
@@ -191,10 +196,14 @@ func parseTerms(fuzzy bool, caseMode Case, str string) []termSet {
 				sets = append(sets, set)
 				set = termSet{}
 			}
+			textRunes := []rune(text)
+			if normalize {
+				textRunes = algo.NormalizeRunes(textRunes)
+			}
 			set = append(set, term{
 				typ:           typ,
 				inv:           inv,
-				text:          []rune(text),
+				text:          textRunes,
 				caseSensitive: caseSensitive,
 				origText:      origText})
 			switchSet = true
@@ -234,7 +243,7 @@ func (p *Pattern) CacheKey() string {
 }
 
 // Match returns the list of matches Items in the given Chunk
-func (p *Pattern) Match(chunk *Chunk) []*Result {
+func (p *Pattern) Match(chunk *Chunk, slab *util.Slab) []*Result {
 	// ChunkCache: Exact match
 	cacheKey := p.CacheKey()
 	if p.cacheable {
@@ -260,7 +269,7 @@ Loop:
 		}
 	}
 
-	matches := p.matchChunk(chunk, space)
+	matches := p.matchChunk(chunk, space, slab)
 
 	if p.cacheable {
 		_cache.Add(chunk, cacheKey, matches)
@@ -268,18 +277,18 @@ Loop:
 	return matches
 }
 
-func (p *Pattern) matchChunk(chunk *Chunk, space []*Result) []*Result {
+func (p *Pattern) matchChunk(chunk *Chunk, space []*Result, slab *util.Slab) []*Result {
 	matches := []*Result{}
 
 	if space == nil {
 		for _, item := range *chunk {
-			if match, _ := p.MatchItem(item); match != nil {
+			if match, _, _ := p.MatchItem(item, false, slab); match != nil {
 				matches = append(matches, match)
 			}
 		}
 	} else {
 		for _, result := range space {
-			if match, _ := p.MatchItem(result.item); match != nil {
+			if match, _, _ := p.MatchItem(result.item, false, slab); match != nil {
 				matches = append(matches, match)
 			}
 		}
@@ -288,62 +297,75 @@ func (p *Pattern) matchChunk(chunk *Chunk, space []*Result) []*Result {
 }
 
 // MatchItem returns true if the Item is a match
-func (p *Pattern) MatchItem(item *Item) (*Result, []Offset) {
+func (p *Pattern) MatchItem(item *Item, withPos bool, slab *util.Slab) (*Result, []Offset, *[]int) {
 	if p.extended {
-		if offsets, bonus, trimLen := p.extendedMatch(item); len(offsets) == len(p.termSets) {
-			return buildResult(item, offsets, bonus, trimLen), offsets
+		if offsets, bonus, trimLen, pos := p.extendedMatch(item, withPos, slab); len(offsets) == len(p.termSets) {
+			return buildResult(item, offsets, bonus, trimLen), offsets, pos
 		}
-		return nil, nil
+		return nil, nil, nil
 	}
-	offset, bonus, trimLen := p.basicMatch(item)
+	offset, bonus, trimLen, pos := p.basicMatch(item, withPos, slab)
 	if sidx := offset[0]; sidx >= 0 {
 		offsets := []Offset{offset}
-		return buildResult(item, offsets, bonus, trimLen), offsets
+		return buildResult(item, offsets, bonus, trimLen), offsets, pos
 	}
-	return nil, nil
+	return nil, nil, nil
 }
 
-func (p *Pattern) basicMatch(item *Item) (Offset, int, int) {
+func (p *Pattern) basicMatch(item *Item, withPos bool, slab *util.Slab) (Offset, int, int, *[]int) {
 	input := p.prepareInput(item)
 	if p.fuzzy {
-		return p.iter(algo.FuzzyMatch, input, p.caseSensitive, p.forward, p.text)
+		return p.iter(p.fuzzyAlgo, input, p.caseSensitive, p.normalize, p.forward, p.text, withPos, slab)
 	}
-	return p.iter(algo.ExactMatchNaive, input, p.caseSensitive, p.forward, p.text)
+	return p.iter(algo.ExactMatchNaive, input, p.caseSensitive, p.normalize, p.forward, p.text, withPos, slab)
 }
 
-func (p *Pattern) extendedMatch(item *Item) ([]Offset, int, int) {
+func (p *Pattern) extendedMatch(item *Item, withPos bool, slab *util.Slab) ([]Offset, int, int, *[]int) {
 	input := p.prepareInput(item)
 	offsets := []Offset{}
-	var totalBonus int
+	var totalScore int
 	var totalTrimLen int
+	var allPos *[]int
+	if withPos {
+		allPos = &[]int{}
+	}
 	for _, termSet := range p.termSets {
 		var offset Offset
-		var bonus int
+		var currentScore int
 		var trimLen int
 		matched := false
 		for _, term := range termSet {
 			pfun := p.procFun[term.typ]
-			off, pen, tLen := p.iter(pfun, input, term.caseSensitive, p.forward, term.text)
+			off, score, tLen, pos := p.iter(pfun, input, term.caseSensitive, p.normalize, p.forward, term.text, withPos, slab)
 			if sidx := off[0]; sidx >= 0 {
 				if term.inv {
 					continue
 				}
-				offset, bonus, trimLen = off, pen, tLen
+				offset, currentScore, trimLen = off, score, tLen
 				matched = true
+				if withPos {
+					if pos != nil {
+						*allPos = append(*allPos, *pos...)
+					} else {
+						for idx := off[0]; idx < off[1]; idx++ {
+							*allPos = append(*allPos, int(idx))
+						}
+					}
+				}
 				break
 			} else if term.inv {
-				offset, bonus, trimLen = Offset{0, 0}, 0, 0
+				offset, currentScore, trimLen = Offset{0, 0}, 0, 0
 				matched = true
 				continue
 			}
 		}
 		if matched {
 			offsets = append(offsets, offset)
-			totalBonus += bonus
+			totalScore += currentScore
 			totalTrimLen += trimLen
 		}
 	}
-	return offsets, totalBonus, totalTrimLen
+	return offsets, totalScore, totalTrimLen, allPos
 }
 
 func (p *Pattern) prepareInput(item *Item) []Token {
@@ -362,14 +384,18 @@ func (p *Pattern) prepareInput(item *Item) []Token {
 	return ret
 }
 
-func (p *Pattern) iter(pfun func(bool, bool, util.Chars, []rune) algo.Result,
-	tokens []Token, caseSensitive bool, forward bool, pattern []rune) (Offset, int, int) {
+func (p *Pattern) iter(pfun algo.Algo, tokens []Token, caseSensitive bool, normalize bool, forward bool, pattern []rune, withPos bool, slab *util.Slab) (Offset, int, int, *[]int) {
 	for _, part := range tokens {
-		if res := pfun(caseSensitive, forward, *part.text, pattern); res.Start >= 0 {
+		if res, pos := pfun(caseSensitive, normalize, forward, *part.text, pattern, withPos, slab); res.Start >= 0 {
 			sidx := int32(res.Start) + part.prefixLength
 			eidx := int32(res.End) + part.prefixLength
-			return Offset{sidx, eidx}, res.Bonus, int(part.trimLength)
+			if pos != nil {
+				for idx := range *pos {
+					(*pos)[idx] += int(part.prefixLength)
+				}
+			}
+			return Offset{sidx, eidx}, res.Score, int(part.trimLength), pos
 		}
 	}
-	return Offset{-1, -1}, 0, -1
+	return Offset{-1, -1}, 0, -1, nil
 }

src/pattern_test.go

@@ -8,23 +8,29 @@ import (
 	"github.com/junegunn/fzf/src/util"
 )
 
+var slab *util.Slab
+
+func init() {
+	slab = util.MakeSlab(slab16Size, slab32Size)
+}
+
 func TestParseTermsExtended(t *testing.T) {
-	terms := parseTerms(true, CaseSmart,
+	terms := parseTerms(true, CaseSmart, false,
 		"| aaa 'bbb ^ccc ddd$ !eee !'fff !^ggg !hhh$ | ^iii$ ^xxx | 'yyy | | zzz$ | !ZZZ |")
 	if len(terms) != 9 ||
 		terms[0][0].typ != termFuzzy || terms[0][0].inv ||
 		terms[1][0].typ != termExact || terms[1][0].inv ||
 		terms[2][0].typ != termPrefix || terms[2][0].inv ||
 		terms[3][0].typ != termSuffix || terms[3][0].inv ||
-		terms[4][0].typ != termFuzzy || !terms[4][0].inv ||
-		terms[5][0].typ != termExact || !terms[5][0].inv ||
+		terms[4][0].typ != termExact || !terms[4][0].inv ||
+		terms[5][0].typ != termFuzzy || !terms[5][0].inv ||
 		terms[6][0].typ != termPrefix || !terms[6][0].inv ||
 		terms[7][0].typ != termSuffix || !terms[7][0].inv ||
 		terms[7][1].typ != termEqual || terms[7][1].inv ||
 		terms[8][0].typ != termPrefix || terms[8][0].inv ||
 		terms[8][1].typ != termExact || terms[8][1].inv ||
 		terms[8][2].typ != termSuffix || terms[8][2].inv ||
-		terms[8][3].typ != termFuzzy || !terms[8][3].inv {
+		terms[8][3].typ != termExact || !terms[8][3].inv {
 		t.Errorf("%s", terms)
 	}
 	for idx, termSet := range terms[:8] {
@@ -44,7 +50,7 @@ func TestParseTermsExtended(t *testing.T) {
 }
 
 func TestParseTermsExtendedExact(t *testing.T) {
-	terms := parseTerms(false, CaseSmart,
+	terms := parseTerms(false, CaseSmart, false,
 		"aaa 'bbb ^ccc ddd$ !eee !'fff !^ggg !hhh$")
 	if len(terms) != 8 ||
 		terms[0][0].typ != termExact || terms[0][0].inv || len(terms[0][0].text) != 3 ||
@@ -60,7 +66,7 @@ func TestParseTermsExtendedExact(t *testing.T) {
 }
 
 func TestParseTermsEmpty(t *testing.T) {
-	terms := parseTerms(true, CaseSmart, "' $ ^ !' !^ !$")
+	terms := parseTerms(true, CaseSmart, false, "' $ ^ !' !^ !$")
 	if len(terms) != 0 {
 		t.Errorf("%s", terms)
 	}
@@ -69,26 +75,32 @@ func TestParseTermsEmpty(t *testing.T) {
 func TestExact(t *testing.T) {
 	defer clearPatternCache()
 	clearPatternCache()
-	pattern := BuildPattern(true, true, CaseSmart, true, true,
+	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, true,
 		[]Range{}, Delimiter{}, []rune("'abc"))
-	res := algo.ExactMatchNaive(
-		pattern.caseSensitive, pattern.forward, util.RunesToChars([]rune("aabbcc abc")), pattern.termSets[0][0].text)
+	res, pos := algo.ExactMatchNaive(
+		pattern.caseSensitive, pattern.normalize, pattern.forward, util.RunesToChars([]rune("aabbcc abc")), pattern.termSets[0][0].text, true, nil)
 	if res.Start != 7 || res.End != 10 {
 		t.Errorf("%s / %d / %d", pattern.termSets, res.Start, res.End)
 	}
+	if pos != nil {
+		t.Errorf("pos is expected to be nil")
+	}
 }
 
 func TestEqual(t *testing.T) {
 	defer clearPatternCache()
 	clearPatternCache()
-	pattern := BuildPattern(true, true, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("^AbC$"))
+	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("^AbC$"))
 
 	match := func(str string, sidxExpected int, eidxExpected int) {
-		res := algo.EqualMatch(
-			pattern.caseSensitive, pattern.forward, util.RunesToChars([]rune(str)), pattern.termSets[0][0].text)
+		res, pos := algo.EqualMatch(
+			pattern.caseSensitive, pattern.normalize, pattern.forward, util.RunesToChars([]rune(str)), pattern.termSets[0][0].text, true, nil)
 		if res.Start != sidxExpected || res.End != eidxExpected {
 			t.Errorf("%s / %d / %d", pattern.termSets, res.Start, res.End)
 		}
+		if pos != nil {
+			t.Errorf("pos is expected to be nil")
+		}
 	}
 	match("ABC", -1, -1)
 	match("AbC", 0, 3)
@@ -97,17 +109,17 @@ func TestEqual(t *testing.T) {
 func TestCaseSensitivity(t *testing.T) {
 	defer clearPatternCache()
 	clearPatternCache()
-	pat1 := BuildPattern(true, false, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat1 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("abc"))
 	clearPatternCache()
-	pat2 := BuildPattern(true, false, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat2 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 	clearPatternCache()
-	pat3 := BuildPattern(true, false, CaseIgnore, true, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat3 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, true, []Range{}, Delimiter{}, []rune("abc"))
 	clearPatternCache()
-	pat4 := BuildPattern(true, false, CaseIgnore, true, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat4 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 	clearPatternCache()
-	pat5 := BuildPattern(true, false, CaseRespect, true, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat5 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, true, []Range{}, Delimiter{}, []rune("abc"))
 	clearPatternCache()
-	pat6 := BuildPattern(true, false, CaseRespect, true, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat6 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 
 	if string(pat1.text) != "abc" || pat1.caseSensitive != false ||
 		string(pat2.text) != "Abc" || pat2.caseSensitive != true ||
@@ -120,7 +132,7 @@ func TestCaseSensitivity(t *testing.T) {
 }
 
 func TestOrigTextAndTransformed(t *testing.T) {
-	pattern := BuildPattern(true, true, CaseSmart, true, true, []Range{}, Delimiter{}, []rune("jg"))
+	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("jg"))
 	tokens := Tokenize(util.RunesToChars([]rune("junegunn")), Delimiter{})
 	trans := Transform(tokens, []Range{Range{1, 1}})
 
@@ -133,24 +145,29 @@ func TestOrigTextAndTransformed(t *testing.T) {
 				transformed: trans},
 		}
 		pattern.extended = extended
-		matches := pattern.matchChunk(&chunk, nil) // No cache
-		if matches[0].item.text.ToString() != "junegunn" || string(*matches[0].item.origText) != "junegunn.choi" ||
-			!reflect.DeepEqual(matches[0].item.transformed, trans) {
+		matches := pattern.matchChunk(&chunk, nil, slab) // No cache
+		if !(matches[0].item.text.ToString() == "junegunn" &&
+			string(*matches[0].item.origText) == "junegunn.choi" &&
+			reflect.DeepEqual(matches[0].item.transformed, trans)) {
 			t.Error("Invalid match result", matches)
 		}
 
-		match, offsets := pattern.MatchItem(chunk[0])
-		if match.item.text.ToString() != "junegunn" || string(*match.item.origText) != "junegunn.choi" ||
-			offsets[0][0] != 0 || offsets[0][1] != 5 ||
-			!reflect.DeepEqual(match.item.transformed, trans) {
-			t.Error("Invalid match result", match)
+		match, offsets, pos := pattern.MatchItem(chunk[0], true, slab)
+		if !(match.item.text.ToString() == "junegunn" &&
+			string(*match.item.origText) == "junegunn.choi" &&
+			offsets[0][0] == 0 && offsets[0][1] == 5 &&
+			reflect.DeepEqual(match.item.transformed, trans)) {
+			t.Error("Invalid match result", match, offsets, extended)
+		}
+		if !((*pos)[0] == 4 && (*pos)[1] == 0) {
+			t.Error("Invalid pos array", *pos)
 		}
 	}
 }
 
 func TestCacheKey(t *testing.T) {
 	test := func(extended bool, patStr string, expected string, cacheable bool) {
-		pat := BuildPattern(true, extended, CaseSmart, true, true, []Range{}, Delimiter{}, []rune(patStr))
+		pat := BuildPattern(true, algo.FuzzyMatchV2, extended, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune(patStr))
 		if pat.CacheKey() != expected {
 			t.Errorf("Expected: %s, actual: %s", expected, pat.CacheKey())
 		}

src/reader.go

@@ -39,9 +39,15 @@ func (r *Reader) feed(src io.Reader) {
 		// ReadBytes returns err != nil if and only if the returned data does not
 		// end in delim.
 		bytea, err := reader.ReadBytes(delim)
+		byteaLen := len(bytea)
 		if len(bytea) > 0 {
 			if err == nil {
-				bytea = bytea[:len(bytea)-1]
+				// get rid of carriage return if under Windows:
+				if util.IsWindows() && byteaLen >= 2 && bytea[byteaLen-2] == byte('\r') {
+					bytea = bytea[:byteaLen-2]
+				} else {
+					bytea = bytea[:byteaLen-1]
+				}
 			}
 			if r.pusher(bytea) {
 				r.eventBox.Set(EvtReadNew, nil)

src/result.go

@@ -3,8 +3,9 @@ package fzf
 import (
 	"math"
 	"sort"
+	"unicode"
 
-	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/tui"
 	"github.com/junegunn/fzf/src/util"
 )
 
@@ -13,14 +14,13 @@ type Offset [2]int32
 
 type colorOffset struct {
 	offset [2]int32
-	color  int
-	bold   bool
+	color  tui.ColorPair
+	attr   tui.Attr
 	index  int32
 }
 
 type rank struct {
-	// byMatchLen, byBonus, ...
-	points [5]uint16
+	points [4]uint16
 	index  int32
 }
 
@@ -29,66 +29,49 @@ type Result struct {
 	rank rank
 }
 
-func buildResult(item *Item, offsets []Offset, bonus int, trimLen int) *Result {
+func buildResult(item *Item, offsets []Offset, score int, trimLen int) *Result {
 	if len(offsets) > 1 {
 		sort.Sort(ByOrder(offsets))
 	}
 
 	result := Result{item: item, rank: rank{index: item.index}}
-
-	matchlen := 0
-	prevEnd := 0
-	minBegin := math.MaxInt32
 	numChars := item.text.Length()
+	minBegin := math.MaxUint16
+	maxEnd := 0
+	validOffsetFound := false
 	for _, offset := range offsets {
-		begin := int(offset[0])
-		end := int(offset[1])
-		if prevEnd > begin {
-			begin = prevEnd
-		}
-		if end > prevEnd {
-			prevEnd = end
-		}
-		if end > begin {
-			if begin < minBegin {
-				minBegin = begin
-			}
-			matchlen += end - begin
+		b, e := int(offset[0]), int(offset[1])
+		if b < e {
+			minBegin = util.Min(b, minBegin)
+			maxEnd = util.Max(e, maxEnd)
+			validOffsetFound = true
 		}
 	}
 
 	for idx, criterion := range sortCriteria {
-		var val uint16
+		val := uint16(math.MaxUint16)
 		switch criterion {
-		case byMatchLen:
-			if matchlen == 0 {
-				val = math.MaxUint16
-			} else {
-				val = util.AsUint16(matchlen)
-			}
-		case byBonus:
+		case byScore:
 			// Higher is better
-			val = math.MaxUint16 - util.AsUint16(bonus)
+			val = math.MaxUint16 - util.AsUint16(score)
 		case byLength:
 			// If offsets is empty, trimLen will be 0, but we don't care
 			val = util.AsUint16(trimLen)
-		case byBegin:
-			// We can't just look at item.offsets[0][0] because it can be an inverse term
-			whitePrefixLen := 0
-			for idx := 0; idx < numChars; idx++ {
-				r := item.text.Get(idx)
-				whitePrefixLen = idx
-				if idx == minBegin || r != ' ' && r != '\t' {
-					break
+		case byBegin, byEnd:
+			if validOffsetFound {
+				whitePrefixLen := 0
+				for idx := 0; idx < numChars; idx++ {
+					r := item.text.Get(idx)
+					whitePrefixLen = idx
+					if idx == minBegin || !unicode.IsSpace(r) {
+						break
+					}
+				}
+				if criterion == byBegin {
+					val = util.AsUint16(minBegin - whitePrefixLen)
+				} else {
+					val = util.AsUint16(math.MaxUint16 - math.MaxUint16*(maxEnd-whitePrefixLen)/trimLen)
 				}
-			}
-			val = util.AsUint16(minBegin - whitePrefixLen)
-		case byEnd:
-			if prevEnd > 0 {
-				val = util.AsUint16(1 + numChars - prevEnd)
-			} else {
-				// Empty offsets due to inverse terms.
-				val = 1
 			}
 		}
 		result.rank.points[idx] = val
@@ -106,17 +89,17 @@ func (result *Result) Index() int32 {
 }
 
 func minRank() rank {
-	return rank{index: 0, points: [5]uint16{0, math.MaxUint16, 0, 0, 0}}
+	return rank{index: 0, points: [4]uint16{math.MaxUint16, 0, 0, 0}}
 }
 
-func (result *Result) colorOffsets(matchOffsets []Offset, color int, bold bool, current bool) []colorOffset {
+func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme, color tui.ColorPair, attr tui.Attr, current bool) []colorOffset {
 	itemColors := result.item.Colors()
 
+	// No ANSI code, or --color=no
 	if len(itemColors) == 0 {
 		var offsets []colorOffset
 		for _, off := range matchOffsets {
-
-			offsets = append(offsets, colorOffset{offset: [2]int32{off[0], off[1]}, color: color, bold: bold})
+			offsets = append(offsets, colorOffset{offset: [2]int32{off[0], off[1]}, color: color, attr: attr})
 		}
 		return offsets
 	}
@@ -160,29 +143,31 @@ func (result *Result) colorOffsets(matchOffsets []Offset, color int, bold bool,
 		if curr != 0 && idx > start {
 			if curr == -1 {
 				colors = append(colors, colorOffset{
-					offset: [2]int32{int32(start), int32(idx)}, color: color, bold: bold})
+					offset: [2]int32{int32(start), int32(idx)}, color: color, attr: attr})
 			} else {
 				ansi := itemColors[curr-1]
 				fg := ansi.color.fg
-				if fg == -1 {
-					if current {
-						fg = curses.CurrentFG
-					} else {
-						fg = curses.FG
-					}
-				}
 				bg := ansi.color.bg
-				if bg == -1 {
-					if current {
-						bg = curses.DarkBG
-					} else {
-						bg = curses.BG
+				if theme != nil {
+					if fg == -1 {
+						if current {
+							fg = theme.Current
+						} else {
+							fg = theme.Fg
+						}
+					}
+					if bg == -1 {
+						if current {
+							bg = theme.DarkBg
+						} else {
+							bg = theme.Bg
+						}
 					}
 				}
 				colors = append(colors, colorOffset{
 					offset: [2]int32{int32(start), int32(idx)},
-					color:  curses.PairFor(fg, bg),
-					bold:   ansi.color.bold || bold})
+					color:  tui.NewColorPair(fg, bg),
+					attr:   ansi.color.attr.Merge(attr)})
 			}
 		}
 	}
@@ -245,7 +230,7 @@ func (a ByRelevanceTac) Less(i, j int) bool {
 }
 
 func compareRanks(irank rank, jrank rank, tac bool) bool {
-	for idx := 0; idx < 5; idx++ {
+	for idx := 0; idx < 4; idx++ {
 		left := irank.points[idx]
 		right := jrank.points[idx]
 		if left < right {

src/result_test.go

@@ -1,3 +1,5 @@
+// +build !tcell
+
 package fzf
 
 import (
@@ -5,7 +7,7 @@ import (
 	"sort"
 	"testing"
 
-	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/tui"
 	"github.com/junegunn/fzf/src/util"
 )
 
@@ -26,7 +28,7 @@ func TestOffsetSort(t *testing.T) {
 func TestRankComparison(t *testing.T) {
 	rank := func(vals ...uint16) rank {
 		return rank{
-			points: [5]uint16{vals[0], 0, vals[1], vals[2], vals[3]},
+			points: [4]uint16{vals[0], vals[1], vals[2], vals[3]},
 			index:  int32(vals[4])}
 	}
 	if compareRanks(rank(3, 0, 0, 0, 5), rank(2, 0, 0, 0, 7), false) ||
@@ -47,11 +49,15 @@ func TestRankComparison(t *testing.T) {
 // Match length, string length, index
 func TestResultRank(t *testing.T) {
 	// FIXME global
-	sortCriteria = []criterion{byMatchLen, byBonus, byLength}
+	sortCriteria = []criterion{byScore, byLength}
 
 	strs := [][]rune{[]rune("foo"), []rune("foobar"), []rune("bar"), []rune("baz")}
 	item1 := buildResult(&Item{text: util.RunesToChars(strs[0]), index: 1}, []Offset{}, 2, 3)
-	if item1.rank.points[0] != math.MaxUint16 || item1.rank.points[1] != math.MaxUint16-2 || item1.rank.points[2] != 3 || item1.item.index != 1 {
+	if item1.rank.points[0] != math.MaxUint16-2 || // Bonus
+		item1.rank.points[1] != 3 || // Length
+		item1.rank.points[2] != 0 || // Unused
+		item1.rank.points[3] != 0 || // Unused
+		item1.item.index != 1 {
 		t.Error(item1.rank)
 	}
 	// Only differ in index
@@ -71,16 +77,16 @@ func TestResultRank(t *testing.T) {
 	}
 
 	// Sort by relevance
-	item3 := buildResult(&Item{index: 2}, []Offset{Offset{1, 3}, Offset{5, 7}}, 0, 0)
-	item4 := buildResult(&Item{index: 2}, []Offset{Offset{1, 2}, Offset{6, 7}}, 0, 0)
-	item5 := buildResult(&Item{index: 2}, []Offset{Offset{1, 3}, Offset{5, 7}}, 0, 0)
-	item6 := buildResult(&Item{index: 2}, []Offset{Offset{1, 2}, Offset{6, 7}}, 0, 0)
+	item3 := buildResult(&Item{index: 2}, []Offset{Offset{1, 3}, Offset{5, 7}}, 3, 0)
+	item4 := buildResult(&Item{index: 2}, []Offset{Offset{1, 2}, Offset{6, 7}}, 4, 0)
+	item5 := buildResult(&Item{index: 2}, []Offset{Offset{1, 3}, Offset{5, 7}}, 5, 0)
+	item6 := buildResult(&Item{index: 2}, []Offset{Offset{1, 2}, Offset{6, 7}}, 6, 0)
 	items = []*Result{item1, item2, item3, item4, item5, item6}
 	sort.Sort(ByRelevance(items))
-	if items[0] != item6 || items[1] != item4 ||
-		items[2] != item5 || items[3] != item3 ||
-		items[4] != item2 || items[5] != item1 {
-		t.Error(items)
+	if !(items[0] == item6 && items[1] == item5 &&
+		items[2] == item4 && items[3] == item3 &&
+		items[4] == item2 && items[5] == item1) {
+		t.Error(items, item1, item2, item3, item4, item5, item6)
 	}
 }
 
@@ -93,23 +99,28 @@ func TestColorOffset(t *testing.T) {
 	item := Result{
 		item: &Item{
 			colors: &[]ansiOffset{
-				ansiOffset{[2]int32{0, 20}, ansiState{1, 5, false}},
-				ansiOffset{[2]int32{22, 27}, ansiState{2, 6, true}},
-				ansiOffset{[2]int32{30, 32}, ansiState{3, 7, false}},
-				ansiOffset{[2]int32{33, 40}, ansiState{4, 8, true}}}}}
+				ansiOffset{[2]int32{0, 20}, ansiState{1, 5, 0}},
+				ansiOffset{[2]int32{22, 27}, ansiState{2, 6, tui.Bold}},
+				ansiOffset{[2]int32{30, 32}, ansiState{3, 7, 0}},
+				ansiOffset{[2]int32{33, 40}, ansiState{4, 8, tui.Bold}}}}}
 	// [{[0 5] 9 false} {[5 15] 99 false} {[15 20] 9 false} {[22 25] 10 true} {[25 35] 99 false} {[35 40] 11 true}]
 
-	colors := item.colorOffsets(offsets, 99, false, true)
-	assert := func(idx int, b int32, e int32, c int, bold bool) {
+	pair := tui.NewColorPair(99, 199)
+	colors := item.colorOffsets(offsets, tui.Dark256, pair, tui.AttrRegular, true)
+	assert := func(idx int, b int32, e int32, c tui.ColorPair, bold bool) {
+		var attr tui.Attr
+		if bold {
+			attr = tui.Bold
+		}
 		o := colors[idx]
-		if o.offset[0] != b || o.offset[1] != e || o.color != c || o.bold != bold {
+		if o.offset[0] != b || o.offset[1] != e || o.color != c || o.attr != attr {
 			t.Error(o)
 		}
 	}
-	assert(0, 0, 5, curses.ColUser, false)
-	assert(1, 5, 15, 99, false)
-	assert(2, 15, 20, curses.ColUser, false)
-	assert(3, 22, 25, curses.ColUser+1, true)
-	assert(4, 25, 35, 99, false)
-	assert(5, 35, 40, curses.ColUser+2, true)
+	assert(0, 0, 5, tui.NewColorPair(1, 5), false)
+	assert(1, 5, 15, pair, false)
+	assert(2, 15, 20, tui.NewColorPair(1, 5), false)
+	assert(3, 22, 25, tui.NewColorPair(2, 6), true)
+	assert(4, 25, 35, pair, false)
+	assert(5, 35, 40, tui.NewColorPair(4, 8), true)
 }

src/terminal_test.go

@@ -0,0 +1,73 @@
+package fzf
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/junegunn/fzf/src/util"
+)
+
+func newItem(str string) *Item {
+	bytes := []byte(str)
+	trimmed, _, _ := extractColor(str, nil, nil)
+	return &Item{origText: &bytes, text: util.RunesToChars([]rune(trimmed))}
+}
+
+func TestReplacePlaceholder(t *testing.T) {
+	items1 := []*Item{newItem("  foo'bar \x1b[31mbaz\x1b[m")}
+	items2 := []*Item{
+		newItem("foo'bar \x1b[31mbaz\x1b[m"),
+		newItem("FOO'BAR \x1b[31mBAZ\x1b[m")}
+
+	var result string
+	check := func(expected string) {
+		if result != expected {
+			t.Errorf("expected: %s, actual: %s", expected, result)
+		}
+	}
+
+	// {}, preserve ansi
+	result = replacePlaceholder("echo {}", false, Delimiter{}, "query", items1)
+	check("echo '  foo'\\''bar \x1b[31mbaz\x1b[m'")
+
+	// {}, strip ansi
+	result = replacePlaceholder("echo {}", true, Delimiter{}, "query", items1)
+	check("echo '  foo'\\''bar baz'")
+
+	// {}, with multiple items
+	result = replacePlaceholder("echo {}", true, Delimiter{}, "query", items2)
+	check("echo 'foo'\\''bar baz' 'FOO'\\''BAR BAZ'")
+
+	// {..}, strip leading whitespaces, preserve ansi
+	result = replacePlaceholder("echo {..}", false, Delimiter{}, "query", items1)
+	check("echo 'foo'\\''bar \x1b[31mbaz\x1b[m'")
+
+	// {..}, strip leading whitespaces, strip ansi
+	result = replacePlaceholder("echo {..}", true, Delimiter{}, "query", items1)
+	check("echo 'foo'\\''bar baz'")
+
+	// {q}
+	result = replacePlaceholder("echo {} {q}", true, Delimiter{}, "query", items1)
+	check("echo '  foo'\\''bar baz' 'query'")
+
+	// {q}, multiple items
+	result = replacePlaceholder("echo {}{q}{}", true, Delimiter{}, "query 'string'", items2)
+	check("echo 'foo'\\''bar baz' 'FOO'\\''BAR BAZ''query '\\''string'\\''''foo'\\''bar baz' 'FOO'\\''BAR BAZ'")
+
+	result = replacePlaceholder("echo {1}/{2}/{2,1}/{-1}/{-2}/{}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, "query", items1)
+	check("echo 'foo'\\''bar'/'baz'/'bazfoo'\\''bar'/'baz'/'foo'\\''bar'/'  foo'\\''bar baz'/'foo'\\''bar baz'/{n.t}/{}/{1}/{q}/''")
+
+	result = replacePlaceholder("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, "query", items2)
+	check("echo 'foo'\\''bar' 'FOO'\\''BAR'/'baz' 'BAZ'/'baz' 'BAZ'/'foo'\\''bar' 'FOO'\\''BAR'/'foo'\\''bar baz' 'FOO'\\''BAR BAZ'/{n.t}/{}/{1}/{q}/'' ''")
+
+	// String delimiter
+	delim := "'"
+	result = replacePlaceholder("echo {}/{1}/{2}", true, Delimiter{str: &delim}, "query", items1)
+	check("echo '  foo'\\''bar baz'/'foo'/'bar baz'")
+
+	// Regex delimiter
+	regex := regexp.MustCompile("[oa]+")
+	// foo'bar baz
+	result = replacePlaceholder("echo {}/{1}/{3}/{2..3}", true, Delimiter{regex: regex}, "query", items1)
+	check("echo '  foo'\\''bar baz'/'f'/'r b'/''\\''bar b'")
+}

src/terminal_unix.go

@@ -0,0 +1,13 @@
+// +build !windows
+
+package fzf
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func notifyOnResize(resizeChan chan<- os.Signal) {
+	signal.Notify(resizeChan, syscall.SIGWINCH)
+}

src/terminal_windows.go

@@ -0,0 +1,11 @@
+// +build windows
+
+package fzf
+
+import (
+	"os"
+)
+
+func notifyOnResize(resizeChan chan<- os.Signal) {
+	// TODO
+}

src/tui/light.go

@@ -0,0 +1,820 @@
+package tui
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"syscall"
+	"time"
+	"unicode/utf8"
+
+	"github.com/junegunn/fzf/src/util"
+
+	"golang.org/x/crypto/ssh/terminal"
+)
+
+const (
+	defaultWidth  = 80
+	defaultHeight = 24
+
+	escPollInterval = 5
+)
+
+const consoleDevice string = "/dev/tty"
+
+func openTtyIn() *os.File {
+	in, err := os.OpenFile(consoleDevice, syscall.O_RDONLY, 0)
+	if err != nil {
+		panic("Failed to open " + consoleDevice)
+	}
+	return in
+}
+
+func (r *LightRenderer) stderr(str string) {
+	r.stderrInternal(str, true)
+}
+
+// FIXME: Need better handling of non-displayable characters
+func (r *LightRenderer) stderrInternal(str string, allowNLCR bool) {
+	bytes := []byte(str)
+	runes := []rune{}
+	for len(bytes) > 0 {
+		r, sz := utf8.DecodeRune(bytes)
+		if r == utf8.RuneError || r < 32 &&
+			r != '\x1b' && (!allowNLCR || r != '\n' && r != '\r') {
+			runes = append(runes, '?')
+		} else {
+			runes = append(runes, r)
+		}
+		bytes = bytes[sz:]
+	}
+	r.queued += string(runes)
+}
+
+func (r *LightRenderer) csi(code string) {
+	r.stderr("\x1b[" + code)
+}
+
+func (r *LightRenderer) flush() {
+	if len(r.queued) > 0 {
+		fmt.Fprint(os.Stderr, r.queued)
+		r.queued = ""
+	}
+}
+
+// Light renderer
+type LightRenderer struct {
+	theme         *ColorTheme
+	mouse         bool
+	forceBlack    bool
+	prevDownTime  time.Time
+	clickY        []int
+	ttyin         *os.File
+	buffer        []byte
+	origState     *terminal.State
+	width         int
+	height        int
+	yoffset       int
+	tabstop       int
+	escDelay      int
+	upOneLine     bool
+	queued        string
+	y             int
+	x             int
+	maxHeightFunc func(int) int
+}
+
+type LightWindow struct {
+	renderer *LightRenderer
+	colored  bool
+	border   bool
+	top      int
+	left     int
+	width    int
+	height   int
+	posx     int
+	posy     int
+	tabstop  int
+	bg       Color
+}
+
+func NewLightRenderer(theme *ColorTheme, forceBlack bool, mouse bool, tabstop int, maxHeightFunc func(int) int) Renderer {
+	r := LightRenderer{
+		theme:         theme,
+		forceBlack:    forceBlack,
+		mouse:         mouse,
+		ttyin:         openTtyIn(),
+		yoffset:       -1,
+		tabstop:       tabstop,
+		upOneLine:     false,
+		maxHeightFunc: maxHeightFunc}
+	return &r
+}
+
+func (r *LightRenderer) fd() int {
+	return int(r.ttyin.Fd())
+}
+
+func (r *LightRenderer) defaultTheme() *ColorTheme {
+	if strings.Contains(os.Getenv("TERM"), "256") {
+		return Dark256
+	}
+	colors, err := exec.Command("tput", "colors").Output()
+	if err == nil && atoi(strings.TrimSpace(string(colors)), 16) > 16 {
+		return Dark256
+	}
+	return Default16
+}
+
+func (r *LightRenderer) findOffset() (row int, col int) {
+	r.csi("6n")
+	r.flush()
+	bytes := r.getBytesInternal([]byte{})
+
+	// ^[[*;*R
+	if len(bytes) > 5 && bytes[0] == 27 && bytes[1] == 91 && bytes[len(bytes)-1] == 'R' {
+		nums := strings.Split(string(bytes[2:len(bytes)-1]), ";")
+		if len(nums) == 2 {
+			return atoi(nums[0], 0) - 1, atoi(nums[1], 0) - 1
+		}
+		return -1, -1
+	}
+
+	// No idea
+	return -1, -1
+}
+
+func repeat(s string, times int) string {
+	if times > 0 {
+		return strings.Repeat(s, times)
+	}
+	return ""
+}
+
+func atoi(s string, defaultValue int) int {
+	value, err := strconv.Atoi(s)
+	if err != nil {
+		return defaultValue
+	}
+	return value
+}
+
+func (r *LightRenderer) Init() {
+	delay := 100
+	delayEnv := os.Getenv("ESCDELAY")
+	if len(delayEnv) > 0 {
+		num, err := strconv.Atoi(delayEnv)
+		if err == nil && num >= 0 {
+			delay = num
+		}
+	}
+	r.escDelay = delay
+
+	fd := r.fd()
+	origState, err := terminal.GetState(fd)
+	if err != nil {
+		errorExit(err.Error())
+	}
+	r.origState = origState
+	terminal.MakeRaw(fd)
+	r.updateTerminalSize()
+	initTheme(r.theme, r.defaultTheme(), r.forceBlack)
+
+	_, x := r.findOffset()
+	if x > 0 {
+		r.upOneLine = true
+		r.stderr("\n")
+	}
+	for i := 1; i < r.MaxY(); i++ {
+		r.stderr("\n")
+		r.csi("G")
+	}
+
+	if r.mouse {
+		r.csi("?1000h")
+	}
+	r.csi(fmt.Sprintf("%dA", r.MaxY()-1))
+	r.csi("G")
+	// r.csi("s")
+	if r.mouse {
+		r.yoffset, _ = r.findOffset()
+	}
+}
+
+func (r *LightRenderer) move(y int, x int) {
+	// w.csi("u")
+	if r.y < y {
+		r.csi(fmt.Sprintf("%dB", y-r.y))
+	} else if r.y > y {
+		r.csi(fmt.Sprintf("%dA", r.y-y))
+	}
+	r.stderr("\r")
+	if x > 0 {
+		r.csi(fmt.Sprintf("%dC", x))
+	}
+	r.y = y
+	r.x = x
+}
+
+func (r *LightRenderer) origin() {
+	r.move(0, 0)
+}
+
+func getEnv(name string, defaultValue int) int {
+	env := os.Getenv(name)
+	if len(env) == 0 {
+		return defaultValue
+	}
+	return atoi(env, defaultValue)
+}
+
+func (r *LightRenderer) updateTerminalSize() {
+	width, height, err := terminal.GetSize(r.fd())
+	if err == nil {
+		r.width = width
+		r.height = r.maxHeightFunc(height)
+	} else {
+		r.width = getEnv("COLUMNS", defaultWidth)
+		r.height = r.maxHeightFunc(getEnv("LINES", defaultHeight))
+	}
+}
+
+func (r *LightRenderer) getch(nonblock bool) (int, bool) {
+	b := make([]byte, 1)
+	util.SetNonblock(r.ttyin, nonblock)
+	_, err := r.ttyin.Read(b)
+	if err != nil {
+		return 0, false
+	}
+	return int(b[0]), true
+}
+
+func (r *LightRenderer) getBytes() []byte {
+	return r.getBytesInternal(r.buffer)
+}
+
+func (r *LightRenderer) getBytesInternal(buffer []byte) []byte {
+	c, ok := r.getch(false)
+	if !ok {
+		r.Close()
+		errorExit("Failed to read " + consoleDevice)
+	}
+
+	retries := 0
+	if c == ESC {
+		retries = r.escDelay / escPollInterval
+	}
+	buffer = append(buffer, byte(c))
+
+	for {
+		c, ok = r.getch(true)
+		if !ok {
+			if retries > 0 {
+				retries--
+				time.Sleep(escPollInterval * time.Millisecond)
+				continue
+			}
+			break
+		}
+		retries = 0
+		buffer = append(buffer, byte(c))
+	}
+
+	return buffer
+}
+
+func (r *LightRenderer) GetChar() Event {
+	if len(r.buffer) == 0 {
+		r.buffer = r.getBytes()
+	}
+	if len(r.buffer) == 0 {
+		panic("Empty buffer")
+	}
+
+	sz := 1
+	defer func() {
+		r.buffer = r.buffer[sz:]
+	}()
+
+	switch r.buffer[0] {
+	case CtrlC:
+		return Event{CtrlC, 0, nil}
+	case CtrlG:
+		return Event{CtrlG, 0, nil}
+	case CtrlQ:
+		return Event{CtrlQ, 0, nil}
+	case 127:
+		return Event{BSpace, 0, nil}
+	case ESC:
+		ev := r.escSequence(&sz)
+		// Second chance
+		if ev.Type == Invalid {
+			r.buffer = r.getBytes()
+			ev = r.escSequence(&sz)
+		}
+		return ev
+	}
+
+	// CTRL-A ~ CTRL-Z
+	if r.buffer[0] <= CtrlZ {
+		return Event{int(r.buffer[0]), 0, nil}
+	}
+	char, rsz := utf8.DecodeRune(r.buffer)
+	if char == utf8.RuneError {
+		return Event{ESC, 0, nil}
+	}
+	sz = rsz
+	return Event{Rune, char, nil}
+}
+
+func (r *LightRenderer) escSequence(sz *int) Event {
+	if len(r.buffer) < 2 {
+		return Event{ESC, 0, nil}
+	}
+	*sz = 2
+	switch r.buffer[1] {
+	case 13:
+		return Event{AltEnter, 0, nil}
+	case 32:
+		return Event{AltSpace, 0, nil}
+	case 47:
+		return Event{AltSlash, 0, nil}
+	case 98:
+		return Event{AltB, 0, nil}
+	case 100:
+		return Event{AltD, 0, nil}
+	case 102:
+		return Event{AltF, 0, nil}
+	case 127:
+		return Event{AltBS, 0, nil}
+	case 91, 79:
+		if len(r.buffer) < 3 {
+			return Event{Invalid, 0, nil}
+		}
+		*sz = 3
+		switch r.buffer[2] {
+		case 68:
+			return Event{Left, 0, nil}
+		case 67:
+			return Event{Right, 0, nil}
+		case 66:
+			return Event{Down, 0, nil}
+		case 65:
+			return Event{Up, 0, nil}
+		case 90:
+			return Event{BTab, 0, nil}
+		case 72:
+			return Event{Home, 0, nil}
+		case 70:
+			return Event{End, 0, nil}
+		case 77:
+			return r.mouseSequence(sz)
+		case 80:
+			return Event{F1, 0, nil}
+		case 81:
+			return Event{F2, 0, nil}
+		case 82:
+			return Event{F3, 0, nil}
+		case 83:
+			return Event{F4, 0, nil}
+		case 49, 50, 51, 52, 53, 54:
+			if len(r.buffer) < 4 {
+				return Event{Invalid, 0, nil}
+			}
+			*sz = 4
+			switch r.buffer[2] {
+			case 50:
+				if len(r.buffer) == 5 && r.buffer[4] == 126 {
+					*sz = 5
+					switch r.buffer[3] {
+					case 48:
+						return Event{F9, 0, nil}
+					case 49:
+						return Event{F10, 0, nil}
+					case 51:
+						return Event{F11, 0, nil}
+					case 52:
+						return Event{F12, 0, nil}
+					}
+				}
+				// Bracketed paste mode \e[200~ / \e[201
+				if r.buffer[3] == 48 && (r.buffer[4] == 48 || r.buffer[4] == 49) && r.buffer[5] == 126 {
+					*sz = 6
+					return Event{Invalid, 0, nil}
+				}
+				return Event{Invalid, 0, nil} // INS
+			case 51:
+				return Event{Del, 0, nil}
+			case 52:
+				return Event{End, 0, nil}
+			case 53:
+				return Event{PgUp, 0, nil}
+			case 54:
+				return Event{PgDn, 0, nil}
+			case 49:
+				switch r.buffer[3] {
+				case 126:
+					return Event{Home, 0, nil}
+				case 53, 55, 56, 57:
+					if len(r.buffer) == 5 && r.buffer[4] == 126 {
+						*sz = 5
+						switch r.buffer[3] {
+						case 53:
+							return Event{F5, 0, nil}
+						case 55:
+							return Event{F6, 0, nil}
+						case 56:
+							return Event{F7, 0, nil}
+						case 57:
+							return Event{F8, 0, nil}
+						}
+					}
+					return Event{Invalid, 0, nil}
+				case 59:
+					if len(r.buffer) != 6 {
+						return Event{Invalid, 0, nil}
+					}
+					*sz = 6
+					switch r.buffer[4] {
+					case 50:
+						switch r.buffer[5] {
+						case 68:
+							return Event{Home, 0, nil}
+						case 67:
+							return Event{End, 0, nil}
+						}
+					case 53:
+						switch r.buffer[5] {
+						case 68:
+							return Event{SLeft, 0, nil}
+						case 67:
+							return Event{SRight, 0, nil}
+						}
+					} // r.buffer[4]
+				} // r.buffer[3]
+			} // r.buffer[2]
+		} // r.buffer[2]
+	} // r.buffer[1]
+	if r.buffer[1] >= 'a' && r.buffer[1] <= 'z' {
+		return Event{AltA + int(r.buffer[1]) - 'a', 0, nil}
+	}
+	return Event{Invalid, 0, nil}
+}
+
+func (r *LightRenderer) mouseSequence(sz *int) Event {
+	if len(r.buffer) < 6 || r.yoffset < 0 {
+		return Event{Invalid, 0, nil}
+	}
+	*sz = 6
+	switch r.buffer[3] {
+	case 32, 36, 40, 48, // mouse-down / shift / cmd / ctrl
+		35, 39, 43, 51: // mouse-up / shift / cmd / ctrl
+		mod := r.buffer[3] >= 36
+		down := r.buffer[3]%2 == 0
+		x := int(r.buffer[4] - 33)
+		y := int(r.buffer[5]-33) - r.yoffset
+		double := false
+		if down {
+			now := time.Now()
+			if now.Sub(r.prevDownTime) < doubleClickDuration {
+				r.clickY = append(r.clickY, y)
+			} else {
+				r.clickY = []int{y}
+			}
+			r.prevDownTime = now
+		} else {
+			if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
+				time.Now().Sub(r.prevDownTime) < doubleClickDuration {
+				double = true
+			}
+		}
+
+		return Event{Mouse, 0, &MouseEvent{y, x, 0, down, double, mod}}
+	case 96, 100, 104, 112, // scroll-up / shift / cmd / ctrl
+		97, 101, 105, 113: // scroll-down / shift / cmd / ctrl
+		mod := r.buffer[3] >= 100
+		s := 1 - int(r.buffer[3]%2)*2
+		x := int(r.buffer[4] - 33)
+		y := int(r.buffer[5]-33) - r.yoffset
+		return Event{Mouse, 0, &MouseEvent{y, x, s, false, false, mod}}
+	}
+	return Event{Invalid, 0, nil}
+}
+
+func (r *LightRenderer) Pause() {
+	terminal.Restore(r.fd(), r.origState)
+	r.csi("?1049h")
+	r.flush()
+}
+
+func (r *LightRenderer) Resume() bool {
+	terminal.MakeRaw(r.fd())
+	r.csi("?1049l")
+	r.flush()
+	// Should redraw
+	return true
+}
+
+func (r *LightRenderer) Clear() {
+	// r.csi("u")
+	r.origin()
+	r.csi("J")
+	r.flush()
+}
+
+func (r *LightRenderer) RefreshWindows(windows []Window) {
+	r.flush()
+}
+
+func (r *LightRenderer) Refresh() {
+	r.updateTerminalSize()
+}
+
+func (r *LightRenderer) Close() {
+	// r.csi("u")
+	r.origin()
+	r.csi("J")
+	if r.mouse {
+		r.csi("?1000l")
+	}
+	if r.upOneLine {
+		r.csi("A")
+	}
+	r.flush()
+	terminal.Restore(r.fd(), r.origState)
+}
+
+func (r *LightRenderer) MaxX() int {
+	return r.width
+}
+
+func (r *LightRenderer) MaxY() int {
+	return r.height
+}
+
+func (r *LightRenderer) DoesAutoWrap() bool {
+	return true
+}
+
+func (r *LightRenderer) IsOptimized() bool {
+	return false
+}
+
+func (r *LightRenderer) NewWindow(top int, left int, width int, height int, border bool) Window {
+	w := &LightWindow{
+		renderer: r,
+		colored:  r.theme != nil,
+		border:   border,
+		top:      top,
+		left:     left,
+		width:    width,
+		height:   height,
+		tabstop:  r.tabstop,
+		bg:       colDefault}
+	if r.theme != nil {
+		w.bg = r.theme.Bg
+	}
+	if w.border {
+		w.drawBorder()
+	}
+	return w
+}
+
+func (w *LightWindow) drawBorder() {
+	w.Move(0, 0)
+	w.CPrint(ColBorder, AttrRegular, "┌"+repeat("─", w.width-2)+"┐")
+	for y := 1; y < w.height-1; y++ {
+		w.Move(y, 0)
+		w.CPrint(ColBorder, AttrRegular, "│")
+		w.cprint2(colDefault, w.bg, AttrRegular, repeat(" ", w.width-2))
+		w.CPrint(ColBorder, AttrRegular, "│")
+	}
+	w.Move(w.height-1, 0)
+	w.CPrint(ColBorder, AttrRegular, "└"+repeat("─", w.width-2)+"┘")
+}
+
+func (w *LightWindow) csi(code string) {
+	w.renderer.csi(code)
+}
+
+func (w *LightWindow) stderr(str string) {
+	w.renderer.stderr(str)
+}
+
+func (w *LightWindow) stderrInternal(str string, allowNLCR bool) {
+	w.renderer.stderrInternal(str, allowNLCR)
+}
+
+func (w *LightWindow) Top() int {
+	return w.top
+}
+
+func (w *LightWindow) Left() int {
+	return w.left
+}
+
+func (w *LightWindow) Width() int {
+	return w.width
+}
+
+func (w *LightWindow) Height() int {
+	return w.height
+}
+
+func (w *LightWindow) Refresh() {
+}
+
+func (w *LightWindow) Close() {
+}
+
+func (w *LightWindow) X() int {
+	return w.posx
+}
+
+func (w *LightWindow) Enclose(y int, x int) bool {
+	return x >= w.left && x < (w.left+w.width) &&
+		y >= w.top && y < (w.top+w.height)
+}
+
+func (w *LightWindow) Move(y int, x int) {
+	w.posx = x
+	w.posy = y
+
+	w.renderer.move(w.Top()+y, w.Left()+x)
+}
+
+func (w *LightWindow) MoveAndClear(y int, x int) {
+	w.Move(y, x)
+	// We should not delete preview window on the right
+	// csi("K")
+	w.Print(repeat(" ", w.width-x))
+	w.Move(y, x)
+}
+
+func attrCodes(attr Attr) []string {
+	codes := []string{}
+	if (attr & Bold) > 0 {
+		codes = append(codes, "1")
+	}
+	if (attr & Dim) > 0 {
+		codes = append(codes, "2")
+	}
+	if (attr & Italic) > 0 {
+		codes = append(codes, "3")
+	}
+	if (attr & Underline) > 0 {
+		codes = append(codes, "4")
+	}
+	if (attr & Blink) > 0 {
+		codes = append(codes, "5")
+	}
+	if (attr & Reverse) > 0 {
+		codes = append(codes, "7")
+	}
+	return codes
+}
+
+func colorCodes(fg Color, bg Color) []string {
+	codes := []string{}
+	appendCode := func(c Color, offset int) {
+		if c == colDefault {
+			return
+		}
+		if c.is24() {
+			r := (c >> 16) & 0xff
+			g := (c >> 8) & 0xff
+			b := (c) & 0xff
+			codes = append(codes, fmt.Sprintf("%d;2;%d;%d;%d", 38+offset, r, g, b))
+		} else if c >= colBlack && c <= colWhite {
+			codes = append(codes, fmt.Sprintf("%d", int(c)+30+offset))
+		} else if c > colWhite && c < 16 {
+			codes = append(codes, fmt.Sprintf("%d", int(c)+90+offset-8))
+		} else if c >= 16 && c < 256 {
+			codes = append(codes, fmt.Sprintf("%d;5;%d", 38+offset, c))
+		}
+	}
+	appendCode(fg, 0)
+	appendCode(bg, 10)
+	return codes
+}
+
+func (w *LightWindow) csiColor(fg Color, bg Color, attr Attr) bool {
+	codes := append(attrCodes(attr), colorCodes(fg, bg)...)
+	w.csi(";" + strings.Join(codes, ";") + "m")
+	return len(codes) > 0
+}
+
+func (w *LightWindow) Print(text string) {
+	w.cprint2(colDefault, w.bg, AttrRegular, text)
+}
+
+func (w *LightWindow) CPrint(pair ColorPair, attr Attr, text string) {
+	if !w.colored {
+		w.csiColor(colDefault, colDefault, attrFor(pair, attr))
+	} else {
+		w.csiColor(pair.Fg(), pair.Bg(), attr)
+	}
+	w.stderrInternal(text, false)
+	w.csi("m")
+}
+
+func (w *LightWindow) cprint2(fg Color, bg Color, attr Attr, text string) {
+	if w.csiColor(fg, bg, attr) {
+		defer w.csi("m")
+	}
+	w.stderrInternal(text, false)
+}
+
+type wrappedLine struct {
+	text         string
+	displayWidth int
+}
+
+func wrapLine(input string, prefixLength int, max int, tabstop int) []wrappedLine {
+	lines := []wrappedLine{}
+	width := 0
+	line := ""
+	for _, r := range input {
+		w := util.Max(util.RuneWidth(r, prefixLength+width, 8), 1)
+		width += w
+		str := string(r)
+		if r == '\t' {
+			str = repeat(" ", w)
+		}
+		if prefixLength+width <= max {
+			line += str
+		} else {
+			lines = append(lines, wrappedLine{string(line), width - w})
+			line = str
+			prefixLength = 0
+			width = util.RuneWidth(r, prefixLength, 8)
+		}
+	}
+	lines = append(lines, wrappedLine{string(line), width})
+	return lines
+}
+
+func (w *LightWindow) fill(str string, onMove func()) FillReturn {
+	allLines := strings.Split(str, "\n")
+	for i, line := range allLines {
+		lines := wrapLine(line, w.posx, w.width, w.tabstop)
+		for j, wl := range lines {
+			if w.posx >= w.Width()-1 && wl.displayWidth == 0 {
+				if w.posy < w.height-1 {
+					w.MoveAndClear(w.posy+1, 0)
+				}
+				return FillNextLine
+			}
+			w.stderrInternal(wl.text, false)
+			w.posx += wl.displayWidth
+			if j < len(lines)-1 || i < len(allLines)-1 {
+				if w.posy+1 >= w.height {
+					return FillSuspend
+				}
+				w.MoveAndClear(w.posy+1, 0)
+				onMove()
+			}
+		}
+	}
+	return FillContinue
+}
+
+func (w *LightWindow) setBg() {
+	if w.bg != colDefault {
+		w.csiColor(colDefault, w.bg, AttrRegular)
+	}
+}
+
+func (w *LightWindow) Fill(text string) FillReturn {
+	w.MoveAndClear(w.posy, w.posx)
+	w.setBg()
+	return w.fill(text, w.setBg)
+}
+
+func (w *LightWindow) CFill(fg Color, bg Color, attr Attr, text string) FillReturn {
+	w.MoveAndClear(w.posy, w.posx)
+	if bg == colDefault {
+		bg = w.bg
+	}
+	if w.csiColor(fg, bg, attr) {
+		return w.fill(text, func() { w.csiColor(fg, bg, attr) })
+		defer w.csi("m")
+	}
+	return w.fill(text, w.setBg)
+}
+
+func (w *LightWindow) FinishFill() {
+	for y := w.posy + 1; y < w.height; y++ {
+		w.MoveAndClear(y, 0)
+	}
+}
+
+func (w *LightWindow) Erase() {
+	if w.border {
+		w.drawBorder()
+	}
+	// We don't erase the window here to avoid flickering during scroll
+	w.Move(0, 0)
+}

src/tui/ncurses.go

@@ -0,0 +1,498 @@
+// +build !windows
+// +build !tcell
+
+package tui
+
+/*
+#include <ncurses.h>
+#include <locale.h>
+#cgo !static LDFLAGS: -lncurses
+#cgo static LDFLAGS: -l:libncursesw.a -l:libtinfo.a -l:libgpm.a -ldl
+#cgo android static LDFLAGS: -l:libncurses.a -fPIE -march=armv7-a -mfpu=neon -mhard-float -Wl,--no-warn-mismatch
+
+FILE* c_tty() {
+	return fopen("/dev/tty", "r");
+}
+
+SCREEN* c_newterm(FILE* tty) {
+	return newterm(NULL, stderr, tty);
+}
+
+int c_getcurx(WINDOW* win) {
+	return getcurx(win);
+}
+*/
+import "C"
+
+import (
+	"os"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+type Attr C.uint
+
+type CursesWindow struct {
+	impl   *C.WINDOW
+	top    int
+	left   int
+	width  int
+	height int
+}
+
+func (w *CursesWindow) Top() int {
+	return w.top
+}
+
+func (w *CursesWindow) Left() int {
+	return w.left
+}
+
+func (w *CursesWindow) Width() int {
+	return w.width
+}
+
+func (w *CursesWindow) Height() int {
+	return w.height
+}
+
+func (w *CursesWindow) Refresh() {
+	C.wnoutrefresh(w.impl)
+}
+
+func (w *CursesWindow) FinishFill() {
+	// NO-OP
+}
+
+const (
+	Bold      Attr = C.A_BOLD
+	Dim            = C.A_DIM
+	Blink          = C.A_BLINK
+	Reverse        = C.A_REVERSE
+	Underline      = C.A_UNDERLINE
+)
+
+var Italic Attr = C.A_VERTICAL << 1 // FIXME
+
+const (
+	AttrRegular Attr = 0
+)
+
+var (
+	_screen   *C.SCREEN
+	_colorMap map[int]int16
+	_colorFn  func(ColorPair, Attr) (C.short, C.int)
+)
+
+func init() {
+	_colorMap = make(map[int]int16)
+	if strings.HasPrefix(C.GoString(C.curses_version()), "ncurses 5") {
+		Italic = C.A_NORMAL
+	}
+}
+
+func (a Attr) Merge(b Attr) Attr {
+	return a | b
+}
+
+func (r *FullscreenRenderer) defaultTheme() *ColorTheme {
+	if C.tigetnum(C.CString("colors")) >= 256 {
+		return Dark256
+	}
+	return Default16
+}
+
+func (r *FullscreenRenderer) Init() {
+	C.setlocale(C.LC_ALL, C.CString(""))
+	tty := C.c_tty()
+	if tty == nil {
+		errorExit("Failed to open /dev/tty")
+	}
+	_screen = C.c_newterm(tty)
+	if _screen == nil {
+		errorExit("Invalid $TERM: " + os.Getenv("TERM"))
+	}
+	C.set_term(_screen)
+	if r.mouse {
+		C.mousemask(C.ALL_MOUSE_EVENTS, nil)
+		C.mouseinterval(0)
+	}
+	C.noecho()
+	C.raw() // stty dsusp undef
+	C.nonl()
+	C.keypad(C.stdscr, true)
+
+	delay := 50
+	delayEnv := os.Getenv("ESCDELAY")
+	if len(delayEnv) > 0 {
+		num, err := strconv.Atoi(delayEnv)
+		if err == nil && num >= 0 {
+			delay = num
+		}
+	}
+	C.set_escdelay(C.int(delay))
+
+	if r.theme != nil {
+		C.start_color()
+		initTheme(r.theme, r.defaultTheme(), r.forceBlack)
+		initPairs(r.theme)
+		C.bkgd(C.chtype(C.COLOR_PAIR(C.int(ColNormal.index()))))
+		_colorFn = attrColored
+	} else {
+		initTheme(r.theme, nil, r.forceBlack)
+		_colorFn = attrMono
+	}
+
+	C.nodelay(C.stdscr, true)
+	ch := C.getch()
+	if ch != C.ERR {
+		C.ungetch(ch)
+	}
+	C.nodelay(C.stdscr, false)
+}
+
+func initPairs(theme *ColorTheme) {
+	C.assume_default_colors(C.int(theme.Fg), C.int(theme.Bg))
+	for _, pair := range []ColorPair{
+		ColNormal,
+		ColPrompt,
+		ColMatch,
+		ColCurrent,
+		ColCurrentMatch,
+		ColSpinner,
+		ColInfo,
+		ColCursor,
+		ColSelected,
+		ColHeader,
+		ColBorder} {
+		C.init_pair(C.short(pair.index()), C.short(pair.Fg()), C.short(pair.Bg()))
+	}
+}
+
+func (r *FullscreenRenderer) Pause() {
+	C.endwin()
+}
+
+func (r *FullscreenRenderer) Resume() bool {
+	return false
+}
+
+func (r *FullscreenRenderer) Close() {
+	C.endwin()
+	C.delscreen(_screen)
+}
+
+func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int, border bool) Window {
+	win := C.newwin(C.int(height), C.int(width), C.int(top), C.int(left))
+	if r.theme != nil {
+		C.wbkgd(win, C.chtype(C.COLOR_PAIR(C.int(ColNormal.index()))))
+	}
+	if border {
+		pair, attr := _colorFn(ColBorder, 0)
+		C.wcolor_set(win, pair, nil)
+		C.wattron(win, attr)
+		C.box(win, 0, 0)
+		C.wattroff(win, attr)
+		C.wcolor_set(win, 0, nil)
+	}
+
+	return &CursesWindow{
+		impl:   win,
+		top:    top,
+		left:   left,
+		width:  width,
+		height: height,
+	}
+}
+
+func attrColored(color ColorPair, a Attr) (C.short, C.int) {
+	return C.short(color.index()), C.int(a)
+}
+
+func attrMono(color ColorPair, a Attr) (C.short, C.int) {
+	return 0, C.int(attrFor(color, a))
+}
+
+func (r *FullscreenRenderer) MaxX() int {
+	return int(C.COLS)
+}
+
+func (r *FullscreenRenderer) MaxY() int {
+	return int(C.LINES)
+}
+
+func (w *CursesWindow) Close() {
+	C.delwin(w.impl)
+}
+
+func (w *CursesWindow) Enclose(y int, x int) bool {
+	return bool(C.wenclose(w.impl, C.int(y), C.int(x)))
+}
+
+func (w *CursesWindow) Move(y int, x int) {
+	C.wmove(w.impl, C.int(y), C.int(x))
+}
+
+func (w *CursesWindow) MoveAndClear(y int, x int) {
+	w.Move(y, x)
+	C.wclrtoeol(w.impl)
+}
+
+func (w *CursesWindow) Print(text string) {
+	C.waddstr(w.impl, C.CString(strings.Map(func(r rune) rune {
+		if r < 32 {
+			return -1
+		}
+		return r
+	}, text)))
+}
+
+func (w *CursesWindow) CPrint(color ColorPair, attr Attr, text string) {
+	p, a := _colorFn(color, attr)
+	C.wcolor_set(w.impl, p, nil)
+	C.wattron(w.impl, a)
+	w.Print(text)
+	C.wattroff(w.impl, a)
+	C.wcolor_set(w.impl, 0, nil)
+}
+
+func (r *FullscreenRenderer) Clear() {
+	C.clear()
+	C.endwin()
+}
+
+func (r *FullscreenRenderer) Refresh() {
+	C.refresh()
+}
+
+func (w *CursesWindow) Erase() {
+	C.werase(w.impl)
+}
+
+func (w *CursesWindow) X() int {
+	return int(C.c_getcurx(w.impl))
+}
+
+func (r *FullscreenRenderer) DoesAutoWrap() bool {
+	return true
+}
+
+func (r *FullscreenRenderer) IsOptimized() bool {
+	return true
+}
+
+func (w *CursesWindow) Fill(str string) FillReturn {
+	if C.waddstr(w.impl, C.CString(str)) == C.OK {
+		return FillContinue
+	}
+	return FillSuspend
+}
+
+func (w *CursesWindow) CFill(fg Color, bg Color, attr Attr, str string) FillReturn {
+	index := ColorPair{fg, bg, -1}.index()
+	C.wcolor_set(w.impl, C.short(index), nil)
+	C.wattron(w.impl, C.int(attr))
+	ret := w.Fill(str)
+	C.wattroff(w.impl, C.int(attr))
+	C.wcolor_set(w.impl, 0, nil)
+	return ret
+}
+
+func (r *FullscreenRenderer) RefreshWindows(windows []Window) {
+	for _, w := range windows {
+		w.Refresh()
+	}
+	C.doupdate()
+}
+
+func (p ColorPair) index() int16 {
+	if p.id >= 0 {
+		return p.id
+	}
+
+	// ncurses does not support 24-bit colors
+	if p.is24() {
+		return ColDefault.index()
+	}
+
+	key := p.key()
+	if found, prs := _colorMap[key]; prs {
+		return found
+	}
+
+	id := int16(len(_colorMap)) + ColUser.id
+	C.init_pair(C.short(id), C.short(p.Fg()), C.short(p.Bg()))
+	_colorMap[key] = id
+	return id
+}
+
+func consume(expects ...rune) bool {
+	for _, r := range expects {
+		if int(C.getch()) != int(r) {
+			return false
+		}
+	}
+	return true
+}
+
+func escSequence() Event {
+	C.nodelay(C.stdscr, true)
+	defer func() {
+		C.nodelay(C.stdscr, false)
+	}()
+	c := C.getch()
+	switch c {
+	case C.ERR:
+		return Event{ESC, 0, nil}
+	case CtrlM:
+		return Event{AltEnter, 0, nil}
+	case '/':
+		return Event{AltSlash, 0, nil}
+	case ' ':
+		return Event{AltSpace, 0, nil}
+	case 127, C.KEY_BACKSPACE:
+		return Event{AltBS, 0, nil}
+	case '[':
+		// Bracketed paste mode (printf "\e[?2004h")
+		// \e[200~ TEXT \e[201~
+		if consume('2', '0', '0', '~') {
+			return Event{Invalid, 0, nil}
+		}
+	}
+	if c >= 'a' && c <= 'z' {
+		return Event{AltA + int(c) - 'a', 0, nil}
+	}
+
+	if c >= '0' && c <= '9' {
+		return Event{Alt0 + int(c) - '0', 0, nil}
+	}
+
+	// Don't care. Ignore the rest.
+	for ; c != C.ERR; c = C.getch() {
+	}
+	return Event{Invalid, 0, nil}
+}
+
+func (r *FullscreenRenderer) GetChar() Event {
+	c := C.getch()
+	switch c {
+	case C.ERR:
+		// Unexpected error from blocking read
+		r.Close()
+		errorExit("Failed to read /dev/tty")
+	case C.KEY_UP:
+		return Event{Up, 0, nil}
+	case C.KEY_DOWN:
+		return Event{Down, 0, nil}
+	case C.KEY_LEFT:
+		return Event{Left, 0, nil}
+	case C.KEY_RIGHT:
+		return Event{Right, 0, nil}
+	case C.KEY_HOME:
+		return Event{Home, 0, nil}
+	case C.KEY_END:
+		return Event{End, 0, nil}
+	case C.KEY_BACKSPACE:
+		return Event{BSpace, 0, nil}
+	case C.KEY_F0 + 1:
+		return Event{F1, 0, nil}
+	case C.KEY_F0 + 2:
+		return Event{F2, 0, nil}
+	case C.KEY_F0 + 3:
+		return Event{F3, 0, nil}
+	case C.KEY_F0 + 4:
+		return Event{F4, 0, nil}
+	case C.KEY_F0 + 5:
+		return Event{F5, 0, nil}
+	case C.KEY_F0 + 6:
+		return Event{F6, 0, nil}
+	case C.KEY_F0 + 7:
+		return Event{F7, 0, nil}
+	case C.KEY_F0 + 8:
+		return Event{F8, 0, nil}
+	case C.KEY_F0 + 9:
+		return Event{F9, 0, nil}
+	case C.KEY_F0 + 10:
+		return Event{F10, 0, nil}
+	case C.KEY_F0 + 11:
+		return Event{F11, 0, nil}
+	case C.KEY_F0 + 12:
+		return Event{F12, 0, nil}
+	case C.KEY_DC:
+		return Event{Del, 0, nil}
+	case C.KEY_PPAGE:
+		return Event{PgUp, 0, nil}
+	case C.KEY_NPAGE:
+		return Event{PgDn, 0, nil}
+	case C.KEY_BTAB:
+		return Event{BTab, 0, nil}
+	case C.KEY_ENTER:
+		return Event{CtrlM, 0, nil}
+	case C.KEY_SLEFT:
+		return Event{SLeft, 0, nil}
+	case C.KEY_SRIGHT:
+		return Event{SRight, 0, nil}
+	case C.KEY_MOUSE:
+		var me C.MEVENT
+		if C.getmouse(&me) != C.ERR {
+			mod := ((me.bstate & C.BUTTON_SHIFT) | (me.bstate & C.BUTTON_CTRL) | (me.bstate & C.BUTTON_ALT)) > 0
+			x := int(me.x)
+			y := int(me.y)
+			/* Cannot use BUTTON1_DOUBLE_CLICKED due to mouseinterval(0) */
+			if (me.bstate & C.BUTTON1_PRESSED) > 0 {
+				now := time.Now()
+				if now.Sub(r.prevDownTime) < doubleClickDuration {
+					r.clickY = append(r.clickY, y)
+				} else {
+					r.clickY = []int{y}
+					r.prevDownTime = now
+				}
+				return Event{Mouse, 0, &MouseEvent{y, x, 0, true, false, mod}}
+			} else if (me.bstate & C.BUTTON1_RELEASED) > 0 {
+				double := false
+				if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
+					time.Now().Sub(r.prevDownTime) < doubleClickDuration {
+					double = true
+				}
+				return Event{Mouse, 0, &MouseEvent{y, x, 0, false, double, mod}}
+			} else if (me.bstate&0x8000000) > 0 || (me.bstate&0x80) > 0 {
+				return Event{Mouse, 0, &MouseEvent{y, x, -1, false, false, mod}}
+			} else if (me.bstate & C.BUTTON4_PRESSED) > 0 {
+				return Event{Mouse, 0, &MouseEvent{y, x, 1, false, false, mod}}
+			}
+		}
+		return Event{Invalid, 0, nil}
+	case C.KEY_RESIZE:
+		return Event{Resize, 0, nil}
+	case ESC:
+		return escSequence()
+	case 127:
+		return Event{BSpace, 0, nil}
+	}
+	// CTRL-A ~ CTRL-Z
+	if c >= CtrlA && c <= CtrlZ {
+		return Event{int(c), 0, nil}
+	}
+
+	// Multi-byte character
+	buffer := []byte{byte(c)}
+	for {
+		r, _ := utf8.DecodeRune(buffer)
+		if r != utf8.RuneError {
+			return Event{Rune, r, nil}
+		}
+
+		c := C.getch()
+		if c == C.ERR {
+			break
+		}
+		if c >= C.KEY_CODE_YES {
+			C.ungetch(c)
+			break
+		}
+		buffer = append(buffer, byte(c))
+	}
+	return Event{Invalid, 0, nil}
+}

src/tui/tcell.go

@@ -0,0 +1,560 @@
+// +build tcell windows
+
+package tui
+
+import (
+	"time"
+	"unicode/utf8"
+
+	"runtime"
+
+	// https://github.com/gdamore/tcell/pull/135
+	"github.com/junegunn/tcell"
+	"github.com/junegunn/tcell/encoding"
+
+	"github.com/junegunn/go-runewidth"
+)
+
+func (p ColorPair) style() tcell.Style {
+	style := tcell.StyleDefault
+	return style.Foreground(tcell.Color(p.Fg())).Background(tcell.Color(p.Bg()))
+}
+
+type Attr tcell.Style
+
+type TcellWindow struct {
+	color      bool
+	top        int
+	left       int
+	width      int
+	height     int
+	lastX      int
+	lastY      int
+	moveCursor bool
+	border     bool
+}
+
+func (w *TcellWindow) Top() int {
+	return w.top
+}
+
+func (w *TcellWindow) Left() int {
+	return w.left
+}
+
+func (w *TcellWindow) Width() int {
+	return w.width
+}
+
+func (w *TcellWindow) Height() int {
+	return w.height
+}
+
+func (w *TcellWindow) Refresh() {
+	if w.moveCursor {
+		_screen.ShowCursor(w.left+w.lastX, w.top+w.lastY)
+		w.moveCursor = false
+	}
+	w.lastX = 0
+	w.lastY = 0
+	if w.border {
+		w.drawBorder()
+	}
+}
+
+func (w *TcellWindow) FinishFill() {
+	// NO-OP
+}
+
+const (
+	Bold      Attr = Attr(tcell.AttrBold)
+	Dim            = Attr(tcell.AttrDim)
+	Blink          = Attr(tcell.AttrBlink)
+	Reverse        = Attr(tcell.AttrReverse)
+	Underline      = Attr(tcell.AttrUnderline)
+	Italic         = Attr(tcell.AttrNone) // Not supported
+)
+
+const (
+	AttrRegular Attr = 0
+)
+
+func (r *FullscreenRenderer) defaultTheme() *ColorTheme {
+	if _screen.Colors() >= 256 {
+		return Dark256
+	}
+	return Default16
+}
+
+var (
+	_colorToAttribute = []tcell.Color{
+		tcell.ColorBlack,
+		tcell.ColorRed,
+		tcell.ColorGreen,
+		tcell.ColorYellow,
+		tcell.ColorBlue,
+		tcell.ColorDarkMagenta,
+		tcell.ColorLightCyan,
+		tcell.ColorWhite,
+	}
+)
+
+func (c Color) Style() tcell.Color {
+	if c <= colDefault {
+		return tcell.ColorDefault
+	} else if c >= colBlack && c <= colWhite {
+		return _colorToAttribute[int(c)]
+	} else {
+		return tcell.Color(c)
+	}
+}
+
+func (a Attr) Merge(b Attr) Attr {
+	return a | b
+}
+
+var (
+	_screen tcell.Screen
+)
+
+func (r *FullscreenRenderer) initScreen() {
+	s, e := tcell.NewScreen()
+	if e != nil {
+		errorExit(e.Error())
+	}
+	if e = s.Init(); e != nil {
+		errorExit(e.Error())
+	}
+	if r.mouse {
+		s.EnableMouse()
+	} else {
+		s.DisableMouse()
+	}
+	_screen = s
+}
+
+func (r *FullscreenRenderer) Init() {
+	encoding.Register()
+
+	r.initScreen()
+	initTheme(r.theme, r.defaultTheme(), r.forceBlack)
+}
+
+func (r *FullscreenRenderer) MaxX() int {
+	ncols, _ := _screen.Size()
+	return int(ncols)
+}
+
+func (r *FullscreenRenderer) MaxY() int {
+	_, nlines := _screen.Size()
+	return int(nlines)
+}
+
+func (w *TcellWindow) X() int {
+	return w.lastX
+}
+
+func (r *FullscreenRenderer) DoesAutoWrap() bool {
+	return false
+}
+
+func (r *FullscreenRenderer) IsOptimized() bool {
+	return false
+}
+
+func (r *FullscreenRenderer) Clear() {
+	_screen.Sync()
+	_screen.Clear()
+}
+
+func (r *FullscreenRenderer) Refresh() {
+	// noop
+}
+
+func (r *FullscreenRenderer) GetChar() Event {
+	ev := _screen.PollEvent()
+	switch ev := ev.(type) {
+	case *tcell.EventResize:
+		return Event{Resize, 0, nil}
+
+	// process mouse events:
+	case *tcell.EventMouse:
+		x, y := ev.Position()
+		button := ev.Buttons()
+		mod := ev.Modifiers() != 0
+		if button&tcell.WheelDown != 0 {
+			return Event{Mouse, 0, &MouseEvent{y, x, -1, false, false, mod}}
+		} else if button&tcell.WheelUp != 0 {
+			return Event{Mouse, 0, &MouseEvent{y, x, +1, false, false, mod}}
+		} else if runtime.GOOS != "windows" {
+			// double and single taps on Windows don't quite work due to
+			// the console acting on the events and not allowing us
+			// to consume them.
+
+			down := button&tcell.Button1 != 0 // left
+			double := false
+			if down {
+				now := time.Now()
+				if now.Sub(r.prevDownTime) < doubleClickDuration {
+					r.clickY = append(r.clickY, x)
+				} else {
+					r.clickY = []int{x}
+					r.prevDownTime = now
+				}
+			} else {
+				if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
+					time.Now().Sub(r.prevDownTime) < doubleClickDuration {
+					double = true
+				}
+			}
+
+			return Event{Mouse, 0, &MouseEvent{y, x, 0, down, double, mod}}
+		}
+
+		// process keyboard:
+	case *tcell.EventKey:
+		alt := (ev.Modifiers() & tcell.ModAlt) > 0
+		switch ev.Key() {
+		case tcell.KeyCtrlA:
+			return Event{CtrlA, 0, nil}
+		case tcell.KeyCtrlB:
+			return Event{CtrlB, 0, nil}
+		case tcell.KeyCtrlC:
+			return Event{CtrlC, 0, nil}
+		case tcell.KeyCtrlD:
+			return Event{CtrlD, 0, nil}
+		case tcell.KeyCtrlE:
+			return Event{CtrlE, 0, nil}
+		case tcell.KeyCtrlF:
+			return Event{CtrlF, 0, nil}
+		case tcell.KeyCtrlG:
+			return Event{CtrlG, 0, nil}
+		case tcell.KeyCtrlJ:
+			return Event{CtrlJ, 0, nil}
+		case tcell.KeyCtrlK:
+			return Event{CtrlK, 0, nil}
+		case tcell.KeyCtrlL:
+			return Event{CtrlL, 0, nil}
+		case tcell.KeyCtrlM:
+			if alt {
+				return Event{AltEnter, 0, nil}
+			}
+			return Event{CtrlM, 0, nil}
+		case tcell.KeyCtrlN:
+			return Event{CtrlN, 0, nil}
+		case tcell.KeyCtrlO:
+			return Event{CtrlO, 0, nil}
+		case tcell.KeyCtrlP:
+			return Event{CtrlP, 0, nil}
+		case tcell.KeyCtrlQ:
+			return Event{CtrlQ, 0, nil}
+		case tcell.KeyCtrlR:
+			return Event{CtrlR, 0, nil}
+		case tcell.KeyCtrlS:
+			return Event{CtrlS, 0, nil}
+		case tcell.KeyCtrlT:
+			return Event{CtrlT, 0, nil}
+		case tcell.KeyCtrlU:
+			return Event{CtrlU, 0, nil}
+		case tcell.KeyCtrlV:
+			return Event{CtrlV, 0, nil}
+		case tcell.KeyCtrlW:
+			return Event{CtrlW, 0, nil}
+		case tcell.KeyCtrlX:
+			return Event{CtrlX, 0, nil}
+		case tcell.KeyCtrlY:
+			return Event{CtrlY, 0, nil}
+		case tcell.KeyCtrlZ:
+			return Event{CtrlZ, 0, nil}
+		case tcell.KeyBackspace, tcell.KeyBackspace2:
+			if alt {
+				return Event{AltBS, 0, nil}
+			}
+			return Event{BSpace, 0, nil}
+
+		case tcell.KeyUp:
+			return Event{Up, 0, nil}
+		case tcell.KeyDown:
+			return Event{Down, 0, nil}
+		case tcell.KeyLeft:
+			return Event{Left, 0, nil}
+		case tcell.KeyRight:
+			return Event{Right, 0, nil}
+
+		case tcell.KeyHome:
+			return Event{Home, 0, nil}
+		case tcell.KeyDelete:
+			return Event{Del, 0, nil}
+		case tcell.KeyEnd:
+			return Event{End, 0, nil}
+		case tcell.KeyPgUp:
+			return Event{PgUp, 0, nil}
+		case tcell.KeyPgDn:
+			return Event{PgDn, 0, nil}
+
+		case tcell.KeyTab:
+			return Event{Tab, 0, nil}
+		case tcell.KeyBacktab:
+			return Event{BTab, 0, nil}
+
+		case tcell.KeyF1:
+			return Event{F1, 0, nil}
+		case tcell.KeyF2:
+			return Event{F2, 0, nil}
+		case tcell.KeyF3:
+			return Event{F3, 0, nil}
+		case tcell.KeyF4:
+			return Event{F4, 0, nil}
+		case tcell.KeyF5:
+			return Event{F5, 0, nil}
+		case tcell.KeyF6:
+			return Event{F6, 0, nil}
+		case tcell.KeyF7:
+			return Event{F7, 0, nil}
+		case tcell.KeyF8:
+			return Event{F8, 0, nil}
+		case tcell.KeyF9:
+			return Event{F9, 0, nil}
+		case tcell.KeyF10:
+			return Event{F10, 0, nil}
+		case tcell.KeyF11:
+			return Event{F11, 0, nil}
+		case tcell.KeyF12:
+			return Event{F12, 0, nil}
+
+		// ev.Ch doesn't work for some reason for space:
+		case tcell.KeyRune:
+			r := ev.Rune()
+			if alt {
+				switch r {
+				case ' ':
+					return Event{AltSpace, 0, nil}
+				case '/':
+					return Event{AltSlash, 0, nil}
+				}
+				if r >= 'a' && r <= 'z' {
+					return Event{AltA + int(r) - 'a', 0, nil}
+				}
+				if r >= '0' && r <= '9' {
+					return Event{Alt0 + int(r) - '0', 0, nil}
+				}
+			}
+			return Event{Rune, r, nil}
+
+		case tcell.KeyEsc:
+			return Event{ESC, 0, nil}
+
+		}
+	}
+
+	return Event{Invalid, 0, nil}
+}
+
+func (r *FullscreenRenderer) Pause() {
+	_screen.Fini()
+}
+
+func (r *FullscreenRenderer) Resume() bool {
+	r.initScreen()
+	return true
+}
+
+func (r *FullscreenRenderer) Close() {
+	_screen.Fini()
+}
+
+func (r *FullscreenRenderer) RefreshWindows(windows []Window) {
+	// TODO
+	for _, w := range windows {
+		w.Refresh()
+	}
+	_screen.Show()
+}
+
+func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int, border bool) Window {
+	// TODO
+	return &TcellWindow{
+		color:  r.theme != nil,
+		top:    top,
+		left:   left,
+		width:  width,
+		height: height,
+		border: border}
+}
+
+func (w *TcellWindow) Close() {
+	// TODO
+}
+
+func fill(x, y, w, h int, r rune) {
+	for ly := 0; ly <= h; ly++ {
+		for lx := 0; lx <= w; lx++ {
+			_screen.SetContent(x+lx, y+ly, r, nil, ColDefault.style())
+		}
+	}
+}
+
+func (w *TcellWindow) Erase() {
+	// TODO
+	fill(w.left, w.top, w.width, w.height, ' ')
+}
+
+func (w *TcellWindow) Enclose(y int, x int) bool {
+	return x >= w.left && x < (w.left+w.width) &&
+		y >= w.top && y < (w.top+w.height)
+}
+
+func (w *TcellWindow) Move(y int, x int) {
+	w.lastX = x
+	w.lastY = y
+	w.moveCursor = true
+}
+
+func (w *TcellWindow) MoveAndClear(y int, x int) {
+	w.Move(y, x)
+	for i := w.lastX; i < w.width; i++ {
+		_screen.SetContent(i+w.left, w.lastY+w.top, rune(' '), nil, ColDefault.style())
+	}
+	w.lastX = x
+}
+
+func (w *TcellWindow) Print(text string) {
+	w.printString(text, ColDefault, 0)
+}
+
+func (w *TcellWindow) printString(text string, pair ColorPair, a Attr) {
+	t := text
+	lx := 0
+
+	var style tcell.Style
+	if w.color {
+		style = pair.style().
+			Reverse(a&Attr(tcell.AttrReverse) != 0).
+			Underline(a&Attr(tcell.AttrUnderline) != 0)
+	} else {
+		style = ColDefault.style().
+			Reverse(a&Attr(tcell.AttrReverse) != 0 || pair == ColCurrent || pair == ColCurrentMatch).
+			Underline(a&Attr(tcell.AttrUnderline) != 0 || pair == ColMatch || pair == ColCurrentMatch)
+	}
+	style = style.
+		Blink(a&Attr(tcell.AttrBlink) != 0).
+		Bold(a&Attr(tcell.AttrBold) != 0).
+		Dim(a&Attr(tcell.AttrDim) != 0)
+
+	for {
+		if len(t) == 0 {
+			break
+		}
+		r, size := utf8.DecodeRuneInString(t)
+		t = t[size:]
+
+		if r < rune(' ') { // ignore control characters
+			continue
+		}
+
+		if r == '\n' {
+			w.lastY++
+			lx = 0
+		} else {
+
+			if r == '\u000D' { // skip carriage return
+				continue
+			}
+
+			var xPos = w.left + w.lastX + lx
+			var yPos = w.top + w.lastY
+			if xPos < (w.left+w.width) && yPos < (w.top+w.height) {
+				_screen.SetContent(xPos, yPos, r, nil, style)
+			}
+			lx += runewidth.RuneWidth(r)
+		}
+	}
+	w.lastX += lx
+}
+
+func (w *TcellWindow) CPrint(pair ColorPair, attr Attr, text string) {
+	w.printString(text, pair, attr)
+}
+
+func (w *TcellWindow) fillString(text string, pair ColorPair, a Attr) FillReturn {
+	lx := 0
+
+	var style tcell.Style
+	if w.color {
+		style = pair.style()
+	} else {
+		style = ColDefault.style()
+	}
+	style = style.
+		Blink(a&Attr(tcell.AttrBlink) != 0).
+		Bold(a&Attr(tcell.AttrBold) != 0).
+		Dim(a&Attr(tcell.AttrDim) != 0).
+		Reverse(a&Attr(tcell.AttrReverse) != 0).
+		Underline(a&Attr(tcell.AttrUnderline) != 0)
+
+	for _, r := range text {
+		if r == '\n' {
+			w.lastY++
+			w.lastX = 0
+			lx = 0
+		} else {
+			var xPos = w.left + w.lastX + lx
+
+			// word wrap:
+			if xPos >= (w.left + w.width) {
+				w.lastY++
+				w.lastX = 0
+				lx = 0
+				xPos = w.left
+			}
+			var yPos = w.top + w.lastY
+
+			if yPos >= (w.top + w.height) {
+				return FillSuspend
+			}
+
+			_screen.SetContent(xPos, yPos, r, nil, style)
+			lx += runewidth.RuneWidth(r)
+		}
+	}
+	w.lastX += lx
+
+	return FillContinue
+}
+
+func (w *TcellWindow) Fill(str string) FillReturn {
+	return w.fillString(str, ColDefault, 0)
+}
+
+func (w *TcellWindow) CFill(fg Color, bg Color, a Attr, str string) FillReturn {
+	return w.fillString(str, ColorPair{fg, bg, -1}, a)
+}
+
+func (w *TcellWindow) drawBorder() {
+	left := w.left
+	right := left + w.width
+	top := w.top
+	bot := top + w.height
+
+	var style tcell.Style
+	if w.color {
+		style = ColBorder.style()
+	} else {
+		style = ColDefault.style()
+	}
+
+	for x := left; x < right; x++ {
+		_screen.SetContent(x, top, tcell.RuneHLine, nil, style)
+		_screen.SetContent(x, bot-1, tcell.RuneHLine, nil, style)
+	}
+
+	for y := top; y < bot; y++ {
+		_screen.SetContent(left, y, tcell.RuneVLine, nil, style)
+		_screen.SetContent(right-1, y, tcell.RuneVLine, nil, style)
+	}
+
+	_screen.SetContent(left, top, tcell.RuneULCorner, nil, style)
+	_screen.SetContent(right-1, top, tcell.RuneURCorner, nil, style)
+	_screen.SetContent(left, bot-1, tcell.RuneLLCorner, nil, style)
+	_screen.SetContent(right-1, bot-1, tcell.RuneLRCorner, nil, style)
+}

src/tui/tui.go

@@ -0,0 +1,412 @@
+package tui
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"time"
+)
+
+// Types of user action
+const (
+	Rune = iota
+
+	CtrlA
+	CtrlB
+	CtrlC
+	CtrlD
+	CtrlE
+	CtrlF
+	CtrlG
+	CtrlH
+	Tab
+	CtrlJ
+	CtrlK
+	CtrlL
+	CtrlM
+	CtrlN
+	CtrlO
+	CtrlP
+	CtrlQ
+	CtrlR
+	CtrlS
+	CtrlT
+	CtrlU
+	CtrlV
+	CtrlW
+	CtrlX
+	CtrlY
+	CtrlZ
+	ESC
+
+	Invalid
+	Resize
+	Mouse
+	DoubleClick
+
+	BTab
+	BSpace
+
+	Del
+	PgUp
+	PgDn
+
+	Up
+	Down
+	Left
+	Right
+	Home
+	End
+
+	SLeft
+	SRight
+
+	F1
+	F2
+	F3
+	F4
+	F5
+	F6
+	F7
+	F8
+	F9
+	F10
+	F11
+	F12
+
+	AltEnter
+	AltSpace
+	AltSlash
+	AltBS
+
+	Alt0
+)
+
+const ( // Reset iota
+	AltA = Alt0 + 'a' - '0' + iota
+	AltB
+	AltC
+	AltD
+	AltE
+	AltF
+	AltZ = AltA + 'z' - 'a'
+)
+
+const (
+	doubleClickDuration = 500 * time.Millisecond
+)
+
+type Color int32
+
+func (c Color) is24() bool {
+	return c > 0 && (c&(1<<24)) > 0
+}
+
+const (
+	colUndefined Color = -2
+	colDefault         = -1
+)
+
+const (
+	colBlack Color = iota
+	colRed
+	colGreen
+	colYellow
+	colBlue
+	colMagenta
+	colCyan
+	colWhite
+)
+
+type FillReturn int
+
+const (
+	FillContinue FillReturn = iota
+	FillNextLine
+	FillSuspend
+)
+
+type ColorPair struct {
+	fg Color
+	bg Color
+	id int16
+}
+
+func HexToColor(rrggbb string) Color {
+	r, _ := strconv.ParseInt(rrggbb[1:3], 16, 0)
+	g, _ := strconv.ParseInt(rrggbb[3:5], 16, 0)
+	b, _ := strconv.ParseInt(rrggbb[5:7], 16, 0)
+	return Color((1 << 24) + (r << 16) + (g << 8) + b)
+}
+
+func NewColorPair(fg Color, bg Color) ColorPair {
+	return ColorPair{fg, bg, -1}
+}
+
+func (p ColorPair) Fg() Color {
+	return p.fg
+}
+
+func (p ColorPair) Bg() Color {
+	return p.bg
+}
+
+func (p ColorPair) key() int {
+	return (int(p.Fg()) << 8) + int(p.Bg())
+}
+
+func (p ColorPair) is24() bool {
+	return p.Fg().is24() || p.Bg().is24()
+}
+
+type ColorTheme struct {
+	Fg           Color
+	Bg           Color
+	DarkBg       Color
+	Prompt       Color
+	Match        Color
+	Current      Color
+	CurrentMatch Color
+	Spinner      Color
+	Info         Color
+	Cursor       Color
+	Selected     Color
+	Header       Color
+	Border       Color
+}
+
+type Event struct {
+	Type       int
+	Char       rune
+	MouseEvent *MouseEvent
+}
+
+type MouseEvent struct {
+	Y      int
+	X      int
+	S      int
+	Down   bool
+	Double bool
+	Mod    bool
+}
+
+type Renderer interface {
+	Init()
+	Pause()
+	Resume() bool
+	Clear()
+	RefreshWindows(windows []Window)
+	Refresh()
+	Close()
+
+	GetChar() Event
+
+	MaxX() int
+	MaxY() int
+	DoesAutoWrap() bool
+	IsOptimized() bool
+
+	NewWindow(top int, left int, width int, height int, border bool) Window
+}
+
+type Window interface {
+	Top() int
+	Left() int
+	Width() int
+	Height() int
+
+	Refresh()
+	FinishFill()
+	Close()
+
+	X() int
+	Enclose(y int, x int) bool
+
+	Move(y int, x int)
+	MoveAndClear(y int, x int)
+	Print(text string)
+	CPrint(color ColorPair, attr Attr, text string)
+	Fill(text string) FillReturn
+	CFill(fg Color, bg Color, attr Attr, text string) FillReturn
+	Erase()
+}
+
+type FullscreenRenderer struct {
+	theme        *ColorTheme
+	mouse        bool
+	forceBlack   bool
+	prevDownTime time.Time
+	clickY       []int
+}
+
+func NewFullscreenRenderer(theme *ColorTheme, forceBlack bool, mouse bool) Renderer {
+	r := &FullscreenRenderer{
+		theme:        theme,
+		mouse:        mouse,
+		forceBlack:   forceBlack,
+		prevDownTime: time.Unix(0, 0),
+		clickY:       []int{}}
+	return r
+}
+
+var (
+	Default16 *ColorTheme
+	Dark256   *ColorTheme
+	Light256  *ColorTheme
+
+	ColDefault      ColorPair
+	ColNormal       ColorPair
+	ColPrompt       ColorPair
+	ColMatch        ColorPair
+	ColCurrent      ColorPair
+	ColCurrentMatch ColorPair
+	ColSpinner      ColorPair
+	ColInfo         ColorPair
+	ColCursor       ColorPair
+	ColSelected     ColorPair
+	ColHeader       ColorPair
+	ColBorder       ColorPair
+	ColUser         ColorPair
+)
+
+func EmptyTheme() *ColorTheme {
+	return &ColorTheme{
+		Fg:           colUndefined,
+		Bg:           colUndefined,
+		DarkBg:       colUndefined,
+		Prompt:       colUndefined,
+		Match:        colUndefined,
+		Current:      colUndefined,
+		CurrentMatch: colUndefined,
+		Spinner:      colUndefined,
+		Info:         colUndefined,
+		Cursor:       colUndefined,
+		Selected:     colUndefined,
+		Header:       colUndefined,
+		Border:       colUndefined}
+}
+
+func errorExit(message string) {
+	fmt.Fprintln(os.Stderr, message)
+	os.Exit(2)
+}
+
+func init() {
+	Default16 = &ColorTheme{
+		Fg:           colDefault,
+		Bg:           colDefault,
+		DarkBg:       colBlack,
+		Prompt:       colBlue,
+		Match:        colGreen,
+		Current:      colYellow,
+		CurrentMatch: colGreen,
+		Spinner:      colGreen,
+		Info:         colWhite,
+		Cursor:       colRed,
+		Selected:     colMagenta,
+		Header:       colCyan,
+		Border:       colBlack}
+	Dark256 = &ColorTheme{
+		Fg:           colDefault,
+		Bg:           colDefault,
+		DarkBg:       236,
+		Prompt:       110,
+		Match:        108,
+		Current:      254,
+		CurrentMatch: 151,
+		Spinner:      148,
+		Info:         144,
+		Cursor:       161,
+		Selected:     168,
+		Header:       109,
+		Border:       59}
+	Light256 = &ColorTheme{
+		Fg:           colDefault,
+		Bg:           colDefault,
+		DarkBg:       251,
+		Prompt:       25,
+		Match:        66,
+		Current:      237,
+		CurrentMatch: 23,
+		Spinner:      65,
+		Info:         101,
+		Cursor:       161,
+		Selected:     168,
+		Header:       31,
+		Border:       145}
+}
+
+func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
+	if theme == nil {
+		initPalette(theme)
+		return
+	}
+
+	if forceBlack {
+		theme.Bg = colBlack
+	}
+
+	o := func(a Color, b Color) Color {
+		if b == colUndefined {
+			return a
+		}
+		return b
+	}
+	theme.Fg = o(baseTheme.Fg, theme.Fg)
+	theme.Bg = o(baseTheme.Bg, theme.Bg)
+	theme.DarkBg = o(baseTheme.DarkBg, theme.DarkBg)
+	theme.Prompt = o(baseTheme.Prompt, theme.Prompt)
+	theme.Match = o(baseTheme.Match, theme.Match)
+	theme.Current = o(baseTheme.Current, theme.Current)
+	theme.CurrentMatch = o(baseTheme.CurrentMatch, theme.CurrentMatch)
+	theme.Spinner = o(baseTheme.Spinner, theme.Spinner)
+	theme.Info = o(baseTheme.Info, theme.Info)
+	theme.Cursor = o(baseTheme.Cursor, theme.Cursor)
+	theme.Selected = o(baseTheme.Selected, theme.Selected)
+	theme.Header = o(baseTheme.Header, theme.Header)
+	theme.Border = o(baseTheme.Border, theme.Border)
+
+	initPalette(theme)
+}
+
+func initPalette(theme *ColorTheme) {
+	ColDefault = ColorPair{colDefault, colDefault, 0}
+	if theme != nil {
+		ColNormal = ColorPair{theme.Fg, theme.Bg, 1}
+		ColPrompt = ColorPair{theme.Prompt, theme.Bg, 2}
+		ColMatch = ColorPair{theme.Match, theme.Bg, 3}
+		ColCurrent = ColorPair{theme.Current, theme.DarkBg, 4}
+		ColCurrentMatch = ColorPair{theme.CurrentMatch, theme.DarkBg, 5}
+		ColSpinner = ColorPair{theme.Spinner, theme.Bg, 6}
+		ColInfo = ColorPair{theme.Info, theme.Bg, 7}
+		ColCursor = ColorPair{theme.Cursor, theme.DarkBg, 8}
+		ColSelected = ColorPair{theme.Selected, theme.DarkBg, 9}
+		ColHeader = ColorPair{theme.Header, theme.Bg, 10}
+		ColBorder = ColorPair{theme.Border, theme.Bg, 11}
+	} else {
+		ColNormal = ColorPair{colDefault, colDefault, 1}
+		ColPrompt = ColorPair{colDefault, colDefault, 2}
+		ColMatch = ColorPair{colDefault, colDefault, 3}
+		ColCurrent = ColorPair{colDefault, colDefault, 4}
+		ColCurrentMatch = ColorPair{colDefault, colDefault, 5}
+		ColSpinner = ColorPair{colDefault, colDefault, 6}
+		ColInfo = ColorPair{colDefault, colDefault, 7}
+		ColCursor = ColorPair{colDefault, colDefault, 8}
+		ColSelected = ColorPair{colDefault, colDefault, 9}
+		ColHeader = ColorPair{colDefault, colDefault, 10}
+		ColBorder = ColorPair{colDefault, colDefault, 11}
+	}
+	ColUser = ColorPair{colDefault, colDefault, 12}
+}
+
+func attrFor(color ColorPair, attr Attr) Attr {
+	switch color {
+	case ColCurrent:
+		return attr | Reverse
+	case ColMatch:
+		return attr | Underline
+	case ColCurrentMatch:
+		return attr | Underline | Reverse
+	}
+	return attr
+}

src/tui/tui_test.go

@@ -0,0 +1,20 @@
+package tui
+
+import "testing"
+
+func TestHexToColor(t *testing.T) {
+	assert := func(expr string, r, g, b int) {
+		color := HexToColor(expr)
+		if !color.is24() ||
+			int((color>>16)&0xff) != r ||
+			int((color>>8)&0xff) != g ||
+			int((color)&0xff) != b {
+			t.Fail()
+		}
+	}
+
+	assert("#ff0000", 255, 0, 0)
+	assert("#010203", 1, 2, 3)
+	assert("#102030", 16, 32, 48)
+	assert("#ffffff", 255, 255, 255)
+}

src/util/chars.go

@@ -1,6 +1,7 @@
 package util
 
 import (
+	"unicode"
 	"unicode/utf8"
 )
 
@@ -63,7 +64,7 @@ func (chars *Chars) TrimLength() int {
 	len := chars.Length()
 	for i = len - 1; i >= 0; i-- {
 		char := chars.Get(i)
-		if char != ' ' && char != '\t' {
+		if !unicode.IsSpace(char) {
 			break
 		}
 	}
@@ -75,7 +76,7 @@ func (chars *Chars) TrimLength() int {
 	var j int
 	for j = 0; j < len; j++ {
 		char := chars.Get(j)
-		if char != ' ' && char != '\t' {
+		if !unicode.IsSpace(char) {
 			break
 		}
 	}
@@ -86,7 +87,7 @@ func (chars *Chars) TrailingWhitespaces() int {
 	whitespaces := 0
 	for i := chars.Length() - 1; i >= 0; i-- {
 		char := chars.Get(i)
-		if char != ' ' && char != '\t' {
+		if !unicode.IsSpace(char) {
 			break
 		}
 		whitespaces++

src/util/slab.go

@@ -0,0 +1,12 @@
+package util
+
+type Slab struct {
+	I16 []int16
+	I32 []int32
+}
+
+func MakeSlab(size16 int, size32 int) *Slab {
+	return &Slab{
+		I16: make([]int16, size16),
+		I32: make([]int32, size32)}
+}

src/util/util.go

@@ -1,15 +1,29 @@
 package util
 
-// #include <unistd.h>
-import "C"
-
 import (
 	"math"
 	"os"
-	"os/exec"
 	"time"
+
+	"github.com/junegunn/go-isatty"
+	"github.com/junegunn/go-runewidth"
 )
 
+var _runeWidths = make(map[rune]int)
+
+// RuneWidth returns rune width
+func RuneWidth(r rune, prefixWidth int, tabstop int) int {
+	if r == '\t' {
+		return tabstop - prefixWidth%tabstop
+	} else if w, found := _runeWidths[r]; found {
+		return w
+	} else {
+		w := Max(runewidth.RuneWidth(r), 1)
+		_runeWidths[r] = w
+		return w
+	}
+}
+
 // Max returns the largest integer
 func Max(first int, second int) int {
 	if first >= second {
@@ -18,6 +32,22 @@ func Max(first int, second int) int {
 	return second
 }
 
+// Max16 returns the largest integer
+func Max16(first int16, second int16) int16 {
+	if first >= second {
+		return first
+	}
+	return second
+}
+
+// Max32 returns the largest 32-bit integer
+func Max32(first int32, second int32) int32 {
+	if first > second {
+		return first
+	}
+	return second
+}
+
 // Min returns the smallest integer
 func Min(first int, second int) int {
 	if first <= second {
@@ -34,14 +64,6 @@ func Min32(first int32, second int32) int32 {
 	return second
 }
 
-// Max32 returns the largest 32-bit integer
-func Max32(first int32, second int32) int32 {
-	if first > second {
-		return first
-	}
-	return second
-}
-
 // Constrain32 limits the given 32-bit integer with the upper and lower bounds
 func Constrain32(val int32, min int32, max int32) int32 {
 	if val < min {
@@ -87,14 +109,5 @@ func DurWithin(
 
 // IsTty returns true is stdin is a terminal
 func IsTty() bool {
-	return int(C.isatty(C.int(os.Stdin.Fd()))) != 0
-}
-
-// ExecCommand executes the given command with $SHELL
-func ExecCommand(command string) *exec.Cmd {
-	shell := os.Getenv("SHELL")
-	if len(shell) == 0 {
-		shell = "sh"
-	}
-	return exec.Command(shell, "-c", command)
+	return isatty.IsTerminal(os.Stdin.Fd())
 }

src/util/util_unix.go

@@ -0,0 +1,28 @@
+// +build !windows
+
+package util
+
+import (
+	"os"
+	"os/exec"
+	"syscall"
+)
+
+// ExecCommand executes the given command with $SHELL
+func ExecCommand(command string) *exec.Cmd {
+	shell := os.Getenv("SHELL")
+	if len(shell) == 0 {
+		shell = "sh"
+	}
+	return exec.Command(shell, "-c", command)
+}
+
+// IsWindows returns true on Windows
+func IsWindows() bool {
+	return false
+}
+
+// SetNonBlock executes syscall.SetNonblock on file descriptor
+func SetNonblock(file *os.File, nonblock bool) {
+	syscall.SetNonblock(int(file.Fd()), nonblock)
+}

src/util/util_windows.go

@@ -0,0 +1,34 @@
+// +build windows
+
+package util
+
+import (
+	"os"
+	"os/exec"
+	"syscall"
+
+	"github.com/junegunn/go-shellwords"
+)
+
+// ExecCommand executes the given command with $SHELL
+func ExecCommand(command string) *exec.Cmd {
+	shell := os.Getenv("SHELL")
+	if len(shell) == 0 {
+		shell = "cmd"
+	}
+	args, _ := shellwords.Parse(command)
+	allArgs := make([]string, len(args)+1)
+	allArgs[0] = "/c"
+	copy(allArgs[1:], args)
+	return exec.Command(shell, allArgs...)
+}
+
+// IsWindows returns true on Windows
+func IsWindows() bool {
+	return true
+}
+
+// SetNonBlock executes syscall.SetNonblock on file descriptor
+func SetNonblock(file *os.File, nonblock bool) {
+	syscall.SetNonblock(syscall.Handle(file.Fd()), nonblock)
+}

test/fzf.vader

@@ -143,6 +143,10 @@ Execute (fzf#wrap):
   Assert opts.options =~ '--history /tmp/foobar'
   Assert opts.options =~ '--color light'
 
+  let g:fzf_colors = { 'fg': ['fg', 'Error'] }
+  let opts = fzf#wrap({})
+  Assert opts.options =~ '^--color=fg:'
+
 Execute (Cleanup):
   unlet g:dir
   Restore

test/test_go.rb

@@ -117,8 +117,28 @@ class Tmux
       wait do
         lines = capture(pane)
         class << lines
+          def counts
+            self.lazy
+              .map { |l| l.scan /^. ([0-9]+)\/([0-9]+)( \(([0-9]+)\))?/ }
+              .reject(&:empty?)
+              .first&.first&.map(&:to_i)&.values_at(0, 1, 3) || [0, 0, 0]
+          end
+
+          def match_count
+            counts[0]
+          end
+
           def item_count
-            self[-2] ? self[-2].strip.split('/').last.to_i : 0
+            counts[1]
+          end
+
+          def select_count
+            counts[2]
+          end
+
+          def any_include? val
+            method = val.is_a?(Regexp) ? :match : :include?
+            self.select { |line| line.send method, val }.first
           end
         end
         yield lines
@@ -136,8 +156,10 @@ class Tmux
   def prepare
     tries = 0
     begin
-      self.send_keys 'C-u', 'hello', 'Right'
-      self.until { |lines| lines[-1].end_with?('hello') }
+      self.until do |lines|
+        self.send_keys 'C-u', 'hello'
+        lines[-1].end_with?('hello')
+      end
     rescue Exception
       (tries += 1) < 5 ? retry : raise
     end
@@ -161,6 +183,11 @@ class TestBase < Minitest::Test
      @temp_suffix].join '-'
   end
 
+  def writelines path, lines
+    File.unlink path while File.exists? path
+    File.open(path, 'w') { |f| f << lines.join($/) + $/ }
+  end
+
   def readonce
     wait { File.exists?(tempname) }
     File.read(tempname)
@@ -295,6 +322,19 @@ class TestGoFZF < TestBase
     tmux.until { |lines| lines.last !~ /^>/ }
   end
 
+  def test_file_word
+    tmux.send_keys "#{FZF} -q '--/foo bar/foo-bar/baz' --filepath-word", :Enter
+    tmux.until { |lines| lines.last =~ /^>/ }
+
+    tmux.send_keys :Escape, :b
+    tmux.send_keys :Escape, :b
+    tmux.send_keys :Escape, :b
+    tmux.send_keys :Escape, :d
+    tmux.send_keys :Escape, :f
+    tmux.send_keys :Escape, :BSpace
+    tmux.until { |lines| lines.last == '> --///baz' }
+  end
+
   def test_multi_order
     tmux.send_keys "seq 1 10 | #{fzf :multi}", :Enter
     tmux.until { |lines| lines.last =~ /^>/ }
@@ -452,6 +492,15 @@ class TestGoFZF < TestBase
     assert_equal ['55', 'alt-z', '55'], readonce.split($/)
   end
 
+  def test_expect_printable_character_print_query
+    tmux.send_keys "seq 1 100 | #{fzf '--expect=z --print-query'}", :Enter
+    tmux.until { |lines| lines[-2].include? '100/100' }
+    tmux.send_keys '55'
+    tmux.until { |lines| lines[-2].include? '1/100' }
+    tmux.send_keys 'z'
+    assert_equal ['55', 'z', '55'], readonce.split($/)
+  end
+
   def test_expect_print_query_select_1
     tmux.send_keys "seq 1 100 | #{fzf '-q55 -1 --expect=alt-z --print-query'}", :Enter
     assert_equal ['55', '', '55'], readonce.split($/)
@@ -517,162 +566,91 @@ class TestGoFZF < TestBase
     assert_equal input, `#{FZF} -f"!z" -x --tiebreak end < #{tempname}`.split($/)
   end
 
-  # Since 0.11.2
-  def test_tiebreak_list
-    input = %w[
-      f-o-o-b-a-r
-      foobar----
-      --foobar
-      ----foobar
-      foobar--
-      --foobar--
-      foobar
+  def test_tiebreak_index_begin
+    writelines tempname, [
+      'xoxxxxxoxx',
+      'xoxxxxxox',
+      'xxoxxxoxx',
+      'xxxoxoxxx',
+      'xxxxoxox',
+      '  xxoxoxxx',
     ]
-    writelines tempname, input
 
-    assert_equal %w[
-      foobar----
-      --foobar
-      ----foobar
-      foobar--
-      --foobar--
-      foobar
-      f-o-o-b-a-r
-    ], `#{FZF} -ffb --tiebreak=index < #{tempname}`.split($/)
+    assert_equal [
+      'xxxxoxox',
+      '  xxoxoxxx',
+      'xxxoxoxxx',
+      'xxoxxxoxx',
+      'xoxxxxxox',
+      'xoxxxxxoxx',
+    ], `#{FZF} -foo < #{tempname}`.split($/)
 
-    by_length = %w[
-      foobar
-      --foobar
-      foobar--
-      foobar----
-      ----foobar
-      --foobar--
-      f-o-o-b-a-r
-    ]
-    assert_equal by_length, `#{FZF} -ffb < #{tempname}`.split($/)
-    assert_equal by_length, `#{FZF} -ffb --tiebreak=length < #{tempname}`.split($/)
+    assert_equal [
+      'xxxoxoxxx',
+      'xxxxoxox',
+      '  xxoxoxxx',
+      'xxoxxxoxx',
+      'xoxxxxxoxx',
+      'xoxxxxxox',
+    ], `#{FZF} -foo --tiebreak=index < #{tempname}`.split($/)
 
-    assert_equal %w[
-      foobar
-      foobar--
-      --foobar
-      foobar----
-      --foobar--
-      ----foobar
-      f-o-o-b-a-r
-    ], `#{FZF} -ffb --tiebreak=length,begin < #{tempname}`.split($/)
+    # Note that --tiebreak=begin is now based on the first occurrence of the
+    # first character on the pattern
+    assert_equal [
+      '  xxoxoxxx',
+      'xxxoxoxxx',
+      'xxxxoxox',
+      'xxoxxxoxx',
+      'xoxxxxxoxx',
+      'xoxxxxxox',
+    ], `#{FZF} -foo --tiebreak=begin < #{tempname}`.split($/)
 
-    assert_equal %w[
-      foobar
-      --foobar
-      foobar--
-      ----foobar
-      --foobar--
-      foobar----
-      f-o-o-b-a-r
-    ], `#{FZF} -ffb --tiebreak=length,end < #{tempname}`.split($/)
-
-    assert_equal %w[
-      foobar----
-      foobar--
-      foobar
-      --foobar
-      --foobar--
-      ----foobar
-      f-o-o-b-a-r
-    ], `#{FZF} -ffb --tiebreak=begin < #{tempname}`.split($/)
-
-    by_begin_end = %w[
-      foobar
-      foobar--
-      foobar----
-      --foobar
-      --foobar--
-      ----foobar
-      f-o-o-b-a-r
-    ]
-    assert_equal by_begin_end, `#{FZF} -ffb --tiebreak=begin,length < #{tempname}`.split($/)
-    assert_equal by_begin_end, `#{FZF} -ffb --tiebreak=begin,end < #{tempname}`.split($/)
-
-    assert_equal %w[
-      --foobar
-      ----foobar
-      foobar
-      foobar--
-      --foobar--
-      foobar----
-      f-o-o-b-a-r
-    ], `#{FZF} -ffb --tiebreak=end < #{tempname}`.split($/)
-
-    by_begin_end = %w[
-      foobar
-      --foobar
-      ----foobar
-      foobar--
-      --foobar--
-      foobar----
-      f-o-o-b-a-r
-    ]
-    assert_equal by_begin_end, `#{FZF} -ffb --tiebreak=end,begin < #{tempname}`.split($/)
-    assert_equal by_begin_end, `#{FZF} -ffb --tiebreak=end,length < #{tempname}`.split($/)
+    assert_equal [
+      '  xxoxoxxx',
+      'xxxoxoxxx',
+      'xxxxoxox',
+      'xxoxxxoxx',
+      'xoxxxxxox',
+      'xoxxxxxoxx',
+    ], `#{FZF} -foo --tiebreak=begin,length < #{tempname}`.split($/)
   end
 
-  def test_tiebreak_white_prefix
+  def test_tiebreak_end
     writelines tempname, [
-      'f o o b a r',
-      '    foo bar',
-      '    foobar',
-      '----foo bar',
-      '----foobar',
-      '  foo bar',
-      '  foobar--',
-      '  foobar',
-      '--foo bar',
-      '--foobar',
-      'foobar',
+      'xoxxxxxxxx',
+      'xxoxxxxxxx',
+      'xxxoxxxxxx',
+      'xxxxoxxxx',
+      'xxxxxoxxx',
+      '  xxxxoxxx',
     ]
 
     assert_equal [
-      '    foobar',
-      '  foobar',
-      'foobar',
-      '  foobar--',
-      '--foobar',
-      '----foobar',
-      '    foo bar',
-      '  foo bar',
-      '--foo bar',
-      '----foo bar',
-      'f o o b a r',
-    ], `#{FZF} -ffb < #{tempname}`.split($/)
+      '  xxxxoxxx',
+      'xxxxoxxxx',
+      'xxxxxoxxx',
+      'xoxxxxxxxx',
+      'xxoxxxxxxx',
+      'xxxoxxxxxx',
+    ], `#{FZF} -fo < #{tempname}`.split($/)
 
     assert_equal [
-      '    foobar',
-      '  foobar--',
-      '  foobar',
-      'foobar',
-      '--foobar',
-      '----foobar',
-      '    foo bar',
-      '  foo bar',
-      '--foo bar',
-      '----foo bar',
-      'f o o b a r',
-    ], `#{FZF} -ffb --tiebreak=begin < #{tempname}`.split($/)
+      'xxxxxoxxx',
+      '  xxxxoxxx',
+      'xxxxoxxxx',
+      'xxxoxxxxxx',
+      'xxoxxxxxxx',
+      'xoxxxxxxxx',
+    ], `#{FZF} -fo --tiebreak=end < #{tempname}`.split($/)
 
     assert_equal [
-      '    foobar',
-      '  foobar',
-      'foobar',
-      '  foobar--',
-      '--foobar',
-      '----foobar',
-      '    foo bar',
-      '  foo bar',
-      '--foo bar',
-      '----foo bar',
-      'f o o b a r',
-    ], `#{FZF} -ffb --tiebreak=begin,length < #{tempname}`.split($/)
+      'xxxxxoxxx',
+      '  xxxxoxxx',
+      'xxxxoxxxx',
+      'xxxoxxxxxx',
+      'xxoxxxxxxx',
+      'xoxxxxxxxx',
+    ], `#{FZF} -fo --tiebreak=end,length,begin < #{tempname}`.split($/)
   end
 
   def test_tiebreak_length_with_nth
@@ -748,17 +726,6 @@ class TestGoFZF < TestBase
     assert_equal output, `#{FZF} -fi -n2,1..2 < #{tempname}`.split($/)
   end
 
-  def test_tiebreak_end_backward_scan
-    input = %w[
-      foobar-fb
-      fubar
-    ]
-    writelines tempname, input
-
-    assert_equal input.reverse, `#{FZF} -f fb < #{tempname}`.split($/)
-    assert_equal input, `#{FZF} -f fb --tiebreak=end < #{tempname}`.split($/)
-  end
-
   def test_invalid_cache
     tmux.send_keys "(echo d; echo D; echo x) | #{fzf '-q d'}", :Enter
     tmux.until { |lines| lines[-2].include? '2/3' }
@@ -1127,9 +1094,9 @@ class TestGoFZF < TestBase
   end
 
   def test_invalid_term
-    lines = `TERM=xxx #{FZF}`
+    lines = `TERM=xxx #{FZF} 2>&1`
     assert_equal 2, $?.exitstatus
-    assert lines.include?('Invalid $TERM: xxx')
+    assert lines.include?('Invalid $TERM: xxx') || lines.include?('terminal entry not found')
   end
 
   def test_invalid_option
@@ -1261,12 +1228,6 @@ class TestGoFZF < TestBase
     tmux.send_keys '?'
     tmux.until { |lines| lines[-1] == '> 555' }
   end
-
-private
-  def writelines path, lines
-    File.unlink path while File.exists? path
-    File.open(path, 'w') { |f| f << lines.join($/) + $/ }
-  end
 end
 
 module TestShell
@@ -1284,74 +1245,66 @@ module TestShell
     tmux.prepare
   end
 
-  def test_ctrl_t
+  def unset_var name
+    tmux.prepare
+    tmux.send_keys "unset #{name}", :Enter
     tmux.prepare
-    tmux.send_keys 'C-t', pane: 0
-    lines = tmux.until(1) { |lines| lines.item_count > 1 }
-    expected = lines.values_at(-3, -4).map { |line| line[2..-1] }.join(' ')
-    tmux.send_keys :BTab, :BTab, pane: 1
-    tmux.until(1) { |lines| lines[-2].include?('(2)') }
-    tmux.send_keys :Enter, pane: 1
-    tmux.until(0) { |lines| lines[-1].include? expected }
-    tmux.send_keys 'C-c'
-
-    # FZF_TMUX=0
-    new_shell
-    tmux.send_keys 'C-t', pane: 0
-    lines = tmux.until(0) { |lines| lines.item_count > 1 }
-    expected = lines.values_at(-3, -4).map { |line| line[2..-1] }.join(' ')
-    tmux.send_keys :BTab, :BTab, pane: 0
-    tmux.until(0) { |lines| lines[-2].include?('(2)') }
-    tmux.send_keys :Enter, pane: 0
-    tmux.until(0) { |lines| lines[-1].include? expected }
-    tmux.send_keys 'C-c', 'C-d'
   end
 
-  def test_ctrl_t_command
+  def test_ctrl_t
     set_var "FZF_CTRL_T_COMMAND", "seq 100"
-    tmux.send_keys 'C-t', pane: 0
-    lines = tmux.until(1) { |lines| lines.item_count == 100 }
-    tmux.send_keys :BTab, :BTab, :BTab, pane: 1
-    tmux.until(1) { |lines| lines[-2].include?('(3)') }
-    tmux.send_keys :Enter, pane: 1
-    tmux.until(0) { |lines| lines[-1].include? '1 2 3' }
+
+    lines = retries do
+      tmux.prepare
+      tmux.send_keys 'C-t'
+      tmux.until { |lines| lines.item_count == 100 }
+    end
+    tmux.send_keys :Tab, :Tab, :Tab
+    tmux.until { |lines| lines.any_include? ' (3)' }
+    tmux.send_keys :Enter
+    tmux.until { |lines| lines.any_include? '1 2 3' }
+    tmux.send_keys 'C-c'
   end
 
   def test_ctrl_t_unicode
-    FileUtils.mkdir_p '/tmp/fzf-test'
-    tmux.paste 'cd /tmp/fzf-test; echo -n test1 > "fzf-unicode 테스트1"; echo -n test2 > "fzf-unicode 테스트2"'
-    tmux.prepare
-    tmux.send_keys 'cat ', 'C-t', pane: 0
-    tmux.until(1) { |lines| lines.item_count >= 1 }
-    tmux.send_keys 'fzf-unicode', pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  2/' }
+    writelines tempname, ['fzf-unicode 테스트1', 'fzf-unicode 테스트2']
+    set_var "FZF_CTRL_T_COMMAND", "cat #{tempname}"
 
-    tmux.send_keys '1', pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  1/' }
-    tmux.send_keys :BTab, pane: 1
-    tmux.until(1) { |lines| lines[-2].include? '(1)' }
+    retries do
+      tmux.prepare
+      tmux.send_keys 'echo ', 'C-t'
+      tmux.until { |lines| lines.item_count == 2 }
+    end
+    tmux.send_keys 'fzf-unicode'
+    tmux.until { |lines| lines.match_count == 2 }
 
-    tmux.send_keys :BSpace, pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  2/' }
+    tmux.send_keys '1'
+    tmux.until { |lines| lines.match_count == 1 }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines.select_count == 1 }
 
-    tmux.send_keys '2', pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  1/' }
-    tmux.send_keys :BTab, pane: 1
-    tmux.until(1) { |lines| lines[-2].include? '(2)' }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| lines.match_count == 2 }
+
+    tmux.send_keys '2'
+    tmux.until { |lines| lines.match_count == 1 }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines.select_count == 2 }
 
-    tmux.send_keys :Enter, pane: 1
-    tmux.until { |lines| lines[-1].include?('cat') || lines[-2].include?('cat') }
-    tmux.until { |lines| lines[-1].include?('fzf-unicode') || lines[-2].include?('fzf-unicode') }
     tmux.send_keys :Enter
-    tmux.until { |lines| lines[-1].include? 'test1test2' }
+    tmux.until { |lines| lines.any_include? /echo.*fzf-unicode.*1.*fzf-unicode.*2/ }
+    tmux.send_keys :Enter
+    tmux.until { |lines| lines.any_include? /^fzf-unicode.*1.*fzf-unicode.*2/ }
   end
 
   def test_alt_c
-    tmux.prepare
-    tmux.send_keys :Escape, :c, pane: 0
-    lines = tmux.until(1) { |lines| lines.item_count > 0 && lines[-3][2..-1] }
-    expected = lines[-3][2..-1]
-    tmux.send_keys :Enter, pane: 1
+    lines = retries do
+      tmux.prepare
+      tmux.send_keys :Escape, :c
+      tmux.until { |lines| lines.item_count > 0 }
+    end
+    expected = lines.reverse.select { |l| l.start_with? '>' }.first[2..-1]
+    tmux.send_keys :Enter
     tmux.prepare
     tmux.send_keys :pwd, :Enter
     tmux.until { |lines| lines[-1].end_with?(expected) }
@@ -1363,10 +1316,12 @@ module TestShell
     tmux.prepare
     tmux.send_keys 'cd /', :Enter
 
-    tmux.prepare
-    tmux.send_keys :Escape, :c, pane: 0
-    lines = tmux.until(1) { |lines| lines.item_count == 1 }
-    tmux.send_keys :Enter, pane: 1
+    retries do
+      tmux.prepare
+      tmux.send_keys :Escape, :c
+      lines = tmux.until { |lines| lines.item_count == 1 }
+    end
+    tmux.send_keys :Enter
 
     tmux.prepare
     tmux.send_keys :pwd, :Enter
@@ -1379,16 +1334,29 @@ module TestShell
     tmux.send_keys 'echo 2nd', :Enter; tmux.prepare
     tmux.send_keys 'echo 3d',  :Enter; tmux.prepare
     tmux.send_keys 'echo 3rd', :Enter; tmux.prepare
-    tmux.send_keys 'echo 4th', :Enter; tmux.prepare
-    tmux.send_keys 'C-r', pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
-    tmux.send_keys '3d', pane: 1
-    tmux.until(1) { |lines| lines[-3].end_with? 'echo 3rd' } # --no-sort
-    tmux.send_keys :Enter, pane: 1
+    tmux.send_keys 'echo 4th', :Enter
+    retries do
+      tmux.prepare
+      tmux.send_keys 'C-r'
+      tmux.until { |lines| lines.item_count > 0 }
+    end
+    tmux.send_keys '3d'
+    tmux.until { |lines| lines[-3].end_with? 'echo 3rd' }
+    tmux.send_keys :Enter
     tmux.until { |lines| lines[-1] == 'echo 3rd' }
     tmux.send_keys :Enter
     tmux.until { |lines| lines[-1] == '3rd' }
   end
+
+  def retries times = 3, &block
+    (times - 1).times do |t|
+      begin
+        return block.call
+      rescue RuntimeError
+      end
+    end
+    block.call
+  end
 end
 
 module CompletionTest
@@ -1400,12 +1368,12 @@ module CompletionTest
       FileUtils.touch File.expand_path(f)
     end
     tmux.prepare
-    tmux.send_keys 'cat /tmp/fzf-test/10**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
+    tmux.send_keys 'cat /tmp/fzf-test/10**', :Tab
+    tmux.until { |lines| lines.item_count > 0 }
     tmux.send_keys ' !d'
-    tmux.until(1) { |lines| lines[-2].include?(' 2/') }
-    tmux.send_keys :BTab, :BTab
-    tmux.until(1) { |lines| lines[-2].include?('(2)') }
+    tmux.until { |lines| lines.match_count == 2 }
+    tmux.send_keys :Tab, :Tab
+    tmux.until { |lines| lines.select_count == 2 }
     tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
@@ -1415,10 +1383,10 @@ module CompletionTest
 
     # ~USERNAME**<TAB>
     tmux.send_keys 'C-u'
-    tmux.send_keys "cat ~#{ENV['USER']}**", :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
-    tmux.send_keys '.fzf-home'
-    tmux.until(1) { |lines| lines[-3].end_with? '.fzf-home' }
+    tmux.send_keys "cat ~#{ENV['USER']}**", :Tab
+    tmux.until { |lines| lines.item_count > 0 }
+    tmux.send_keys "'.fzf-home"
+    tmux.until { |lines| lines.select { |l| l.include? '.fzf-home' }.count > 1 }
     tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
@@ -1427,8 +1395,8 @@ module CompletionTest
 
     # ~INVALID_USERNAME**<TAB>
     tmux.send_keys 'C-u'
-    tmux.send_keys "cat ~such**", :Tab, pane: 0
-    tmux.until(1) { |lines| lines[-3].end_with? 'no~such~user' }
+    tmux.send_keys "cat ~such**", :Tab
+    tmux.until { |lines| lines.any_include? 'no~such~user' }
     tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
@@ -1437,9 +1405,11 @@ module CompletionTest
 
     # /tmp/fzf\ test**<TAB>
     tmux.send_keys 'C-u'
-    tmux.send_keys 'cat /tmp/fzf\ test/**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
-    tmux.send_keys 'C-K', :Enter
+    tmux.send_keys 'cat /tmp/fzf\ test/**', :Tab
+    tmux.until { |lines| lines.item_count > 0 }
+    tmux.send_keys 'foobar$'
+    tmux.until { |lines| lines.match_count == 1 }
+    tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
       lines[-1].end_with?('/tmp/fzf\ test/foobar')
@@ -1448,11 +1418,10 @@ module CompletionTest
     # Should include hidden files
     (1..100).each { |i| FileUtils.touch "/tmp/fzf-test/.hidden-#{i}" }
     tmux.send_keys 'C-u'
-    tmux.send_keys 'cat /tmp/fzf-test/hidden**', :Tab, pane: 0
-    tmux.until(1) do |lines|
+    tmux.send_keys 'cat /tmp/fzf-test/hidden**', :Tab
+    tmux.until do |lines|
       tmux.send_keys 'C-L'
-      lines[-2].include?('100/') &&
-      lines[-3].include?('/tmp/fzf-test/.hidden-')
+      lines.match_count == 100 && lines.any_include?('/tmp/fzf-test/.hidden-')
     end
     tmux.send_keys :Enter
   ensure
@@ -1462,19 +1431,22 @@ module CompletionTest
   end
 
   def test_file_completion_root
-    tmux.send_keys 'ls /**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
+    tmux.send_keys 'ls /**', :Tab
+    tmux.until { |lines| lines.item_count > 0 }
     tmux.send_keys :Enter
   end
 
   def test_dir_completion
-    tmux.send_keys 'mkdir -p /tmp/fzf-test/d{1..100}; touch /tmp/fzf-test/d55/xxx', :Enter
+    (1..100).each do |idx|
+      FileUtils.mkdir_p "/tmp/fzf-test/d#{idx}"
+    end
+    FileUtils.touch '/tmp/fzf-test/d55/xxx'
     tmux.prepare
-    tmux.send_keys 'cd /tmp/fzf-test/**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
-    tmux.send_keys :BTab, :BTab # BTab does not work here
+    tmux.send_keys 'cd /tmp/fzf-test/**', :Tab
+    tmux.until { |lines| lines.item_count > 0 }
+    tmux.send_keys :Tab, :Tab # Tab does not work here
     tmux.send_keys 55
-    tmux.until(1) { |lines| lines[-2].start_with? '  1/' }
+    tmux.until { |lines| lines.match_count == 1 }
     tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
@@ -1501,14 +1473,15 @@ module CompletionTest
     lines = tmux.until { |lines| lines[-1].start_with? '[1]' }
     pid = lines[-1].split.last
     tmux.prepare
-    tmux.send_keys 'kill ', :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count > 0 }
+    tmux.send_keys 'C-L'
+    tmux.send_keys 'kill ', :Tab
+    tmux.until { |lines| lines.item_count > 0 }
     tmux.send_keys 'sleep12345'
-    tmux.until(1) { |lines| lines[-3].include? 'sleep 12345' }
+    tmux.until { |lines| lines.any_include? 'sleep 12345' }
     tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
-      lines[-1] == "kill #{pid}"
+      lines[-1].include? "kill #{pid}"
     end
   ensure
     Process.kill 'KILL', pid.to_i rescue nil if pid
@@ -1517,10 +1490,10 @@ module CompletionTest
   def test_custom_completion
     tmux.send_keys '_fzf_compgen_path() { echo "\$1"; seq 10; }', :Enter
     tmux.prepare
-    tmux.send_keys 'ls /tmp/**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines.item_count == 11 }
-    tmux.send_keys :BTab, :BTab, :BTab
-    tmux.until(1) { |lines| lines[-2].include? '(3)' }
+    tmux.send_keys 'ls /tmp/**', :Tab
+    tmux.until { |lines| lines.item_count == 11 }
+    tmux.send_keys :Tab, :Tab, :Tab
+    tmux.until { |lines| lines.select_count == 3 }
     tmux.send_keys :Enter
     tmux.until do |lines|
       tmux.send_keys 'C-L'
@@ -1529,46 +1502,49 @@ module CompletionTest
   end
 
   def test_unset_completion
-    tmux.send_keys 'export FOO=BAR', :Enter
+    tmux.send_keys 'export FZFFOOBAR=BAZ', :Enter
     tmux.prepare
 
     # Using tmux
-    tmux.send_keys 'unset FOO**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines[-2].include? ' 1/' }
+    tmux.send_keys 'unset FZFFOO**', :Tab
+    tmux.until { |lines| lines.match_count == 1 }
     tmux.send_keys :Enter
-    tmux.until { |lines| lines[-1] == 'unset FOO' }
+    tmux.until { |lines| lines[-1].include? 'unset FZFFOOBAR' }
     tmux.send_keys 'C-c'
 
-    # FZF_TMUX=0
+    # FZF_TMUX=1
     new_shell
-    tmux.send_keys 'unset FOO**', :Tab
-    tmux.until { |lines| lines[-2].include? ' 1/' }
+    tmux.send_keys 'unset FZFFO**', :Tab, pane: 0
+    tmux.until(1) { |lines| lines.match_count == 1 }
     tmux.send_keys :Enter
-    tmux.until { |lines| lines[-1] == 'unset FOO' }
+    tmux.until { |lines| lines[-1].include? 'unset FZFFOOBAR' }
   end
 
   def test_file_completion_unicode
     FileUtils.mkdir_p '/tmp/fzf-test'
     tmux.paste 'cd /tmp/fzf-test; echo -n test3 > "fzf-unicode 테스트1"; echo -n test4 > "fzf-unicode 테스트2"'
     tmux.prepare
-    tmux.send_keys 'cat fzf-unicode**', :Tab, pane: 0
-    tmux.until(1) { |lines| lines[-2].start_with? '  2/' }
+    tmux.send_keys 'cat fzf-unicode**', :Tab
+    tmux.until { |lines| lines.match_count == 2 }
 
-    tmux.send_keys '1', pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  1/' }
-    tmux.send_keys :BTab, pane: 1
-    tmux.until(1) { |lines| lines[-2].include? '(1)' }
+    tmux.send_keys '1'
+    tmux.until { |lines| lines.match_count == 1 }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines.select_count == 1 }
 
-    tmux.send_keys :BSpace, pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  2/' }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| lines.match_count == 2 }
 
-    tmux.send_keys '2', pane: 1
-    tmux.until(1) { |lines| lines[-2].start_with? '  1/' }
-    tmux.send_keys :BTab, pane: 1
-    tmux.until(1) { |lines| lines[-2].include? '(2)' }
+    tmux.send_keys '2'
+    tmux.until { |lines| lines.select_count == 1 }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines.select_count == 2 }
 
-    tmux.send_keys :Enter, pane: 1
-    tmux.until { |lines| lines[-1].include?('cat') || lines[-2].include?('cat') }
+    tmux.send_keys :Enter
+    tmux.until do |lines|
+      tmux.send_keys 'C-l'
+      lines.any_include? 'cat'
+    end
     tmux.send_keys :Enter
     tmux.until { |lines| lines[-1].include? 'test3test4' }
   end
@@ -1580,7 +1556,7 @@ class TestBash < TestBase
 
   def new_shell
     tmux.prepare
-    tmux.send_keys "FZF_TMUX=0 #{Shell.bash}", :Enter
+    tmux.send_keys "FZF_TMUX=1 #{Shell.bash}", :Enter
     tmux.prepare
   end
 
@@ -1595,7 +1571,7 @@ class TestZsh < TestBase
   include CompletionTest
 
   def new_shell
-    tmux.send_keys "FZF_TMUX=0 #{Shell.zsh}", :Enter
+    tmux.send_keys "FZF_TMUX=1 #{Shell.zsh}", :Enter
     tmux.prepare
   end
 
@@ -1609,7 +1585,7 @@ class TestFish < TestBase
   include TestShell
 
   def new_shell
-    tmux.send_keys 'env FZF_TMUX=0 fish', :Enter
+    tmux.send_keys 'env FZF_TMUX=1 fish', :Enter
     tmux.send_keys 'function fish_prompt; end; clear', :Enter
     tmux.until { |lines| lines.empty? }
   end