0.13.4

Approx. 50% less memory footprint and 40% improvement in query time

CHANGELOG.md

@@ -1,6 +1,49 @@
 CHANGELOG
 =========
 
+0.13.4
+------
+- Performance optimization
+    - Memory footprint for ascii string is reduced by 60%
+    - 15 to 20% improvement of query performance
+    - Up to 45% better performance of `--nth` with non-regex delimiters
+- Fixed invalid handling of `hidden` property of `--preview-window`
+
+0.13.3
+------
+- Fixed duplicate rendering of the last line in preview window
+
+0.13.2
+------
+- Fixed race condition where preview window is not properly cleared
+
+0.13.1
+------
+- Fixed UI issue with large `--preview` output with many ANSI codes
+
+0.13.0
+------
+- Added preview feature
+    - `--preview CMD`
+    - `--preview-window POS[:SIZE][:hidden]`
+- `{}` in execute action is now replaced to the single-quoted (instead of
+  double-quoted) string of the current line
+- Fixed to ignore control characters for bracketed paste mode
+
+0.12.2
+------
+
+- 256-color capability detection does not require `256` in `$TERM`
+- Added `print-query` action
+- More named keys for binding; <kbd>F1</kbd> ~ <kbd>F10</kbd>,
+  <kbd>ALT-/</kbd>, <kbd>ALT-space</kbd>, and <kbd>ALT-enter</kbd>
+- Added `jump` and `jump-accept` actions that implement [EasyMotion][em]-like
+  movement
+  ![][jump]
+
+[em]: https://github.com/easymotion/vim-easymotion
+[jump]: https://cloud.githubusercontent.com/assets/700826/15367574/b3999dc4-1d64-11e6-85da-28ceeb1a9bc2.png
+
 0.12.1
 ------
 

README.md

@@ -151,27 +151,6 @@ Many useful examples can be found on [the wiki
 page](https://github.com/junegunn/fzf/wiki/examples). Feel free to add your
 own as well.
 
-Key bindings for command line
------------------------------
-
-The install script will setup the following key bindings for bash, zsh, and
-fish.
-
-- `CTRL-T` - Paste the selected files and directories onto the command line
-    - Set `FZF_CTRL_T_COMMAND` to override the default command
-- `CTRL-R` - Paste the selected command from history onto the command line
-    - Sort is disabled by default to respect chronological ordering
-    - Press `CTRL-R` again to toggle sort
-- `ALT-C` - cd into the selected directory
-
-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 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.
-
 `fzf-tmux` script
 -----------------
 
@@ -191,6 +170,31 @@ 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.
 
+Key bindings for command line
+-----------------------------
+
+The install script will setup the following key bindings for bash, zsh, and
+fish.
+
+- `CTRL-T` - Paste the selected files and directories onto the command line
+    - Set `FZF_CTRL_T_COMMAND` to override the default command
+    - Set `FZF_CTRL_T_OPTS` to pass additional options
+- `CTRL-R` - Paste the selected command from history onto the command line
+    - Sort is disabled by default to respect chronological ordering
+    - Press `CTRL-R` again to toggle sort
+    - Set `FZF_CTRL_R_OPTS` to pass additional options
+- `ALT-C` - cd into the selected directory
+    - 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 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.
+
 Fuzzy completion for bash and zsh
 ---------------------------------
 
@@ -316,10 +320,10 @@ customization.
 
 [fzf-config]: https://github.com/junegunn/fzf/wiki/Configuring-FZF-command-(vim)
 
-#### `fzf#run([options])`
+#### `fzf#run`
 
-For more advanced uses, you can use `fzf#run()` function with the following
-options.
+For more advanced uses, you can use `fzf#run([options])` function with the
+following options.
 
 | Option name                | Type          | Description                                                      |
 | -------------------------- | ------------- | ---------------------------------------------------------------- |
@@ -338,6 +342,17 @@ options.
 Examples can be found on [the wiki
 page](https://github.com/junegunn/fzf/wiki/Examples-(vim)).
 
+#### `fzf#wrap`
+
+`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`.
+
+```vim
+command! -bang MyStuff
+  \ call fzf#run(fzf#wrap('my-stuff', {'dir': '~/my-stuff'}, <bang>0))
+```
+
 Tips
 ----
 

bin/fzf-tmux

@@ -2,25 +2,51 @@
 # fzf-tmux: starts fzf in a tmux pane
 # usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
 
+fail() {
+  >&2 echo "$1"
+  exit 2
+}
+
+fzf="$(command -v fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
+[[ -x "$fzf" ]] || fail 'fzf executable not found'
+
 args=()
 opt=""
 skip=""
 swap=""
 close=""
 term=""
-[ -n "$LINES" ] && lines=$LINES || lines=$(tput lines)
-while [ $# -gt 0 ]; do
+[[ -n "$LINES" ]] && lines=$LINES || lines=$(tput lines)
+
+help() {
+  >&2 echo 'usage: fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
+
+  Layout
+    -u [HEIGHT[%]]  Split above (up)
+    -d [HEIGHT[%]]  Split below (down)
+    -l [WIDTH[%]]   Split left
+    -r [WIDTH[%]]   Split right
+
+    (default: -d 50%)
+'
+  exit
+}
+
+while [[ $# -gt 0 ]]; do
   arg="$1"
-  case "$arg" in
+  shift
+  [[ -z "$skip" ]] && case "$arg" in
     -)
       term=1
       ;;
+    --help)
+      help
+      ;;
+    --version)
+      echo "fzf-tmux (with fzf $("$fzf" --version))"
+      exit
+      ;;
     -w*|-h*|-d*|-u*|-r*|-l*)
-      if [ -n "$skip" ]; then
-        args+=("$1")
-        shift
-        continue
-      fi
       if [[ "$arg" =~ ^.[lrw] ]]; then
         opt="-h"
         if [[ "$arg" =~ ^.l ]]; then
@@ -36,35 +62,33 @@ while [ $# -gt 0 ]; do
           close="; tmux swap-pane -D"
         fi
       fi
-      if [ ${#arg} -gt 2 ]; then
+      if [[ ${#arg} -gt 2 ]]; then
         size="${arg:2}"
       else
-        shift
         if [[ "$1" =~ ^[0-9]+%?$ ]]; then
           size="$1"
-        else
-          [ -n "$1" -a "$1" != "--" ] && args+=("$1")
           shift
+        else
           continue
         fi
       fi
 
       if [[ "$size" =~ %$ ]]; then
         size=${size:0:((${#size}-1))}
-        if [ -n "$swap" ]; then
+        if [[ -n "$swap" ]]; then
           opt="$opt -p $(( 100 - size ))"
         else
           opt="$opt -p $size"
         fi
       else
-        if [ -n "$swap" ]; then
+        if [[ -n "$swap" ]]; then
           if [[ "$arg" =~ ^.l ]]; then
-            [ -n "$COLUMNS" ] && max=$COLUMNS || max=$(tput cols)
+            [[ -n "$COLUMNS" ]] && max=$COLUMNS || max=$(tput cols)
           else
             max=$lines
           fi
           size=$(( max - size ))
-          [ $size -lt 0 ] && size=0
+          [[ $size -lt 0 ]] && size=0
           opt="$opt -l $size"
         else
           opt="$opt -l $size"
@@ -75,16 +99,17 @@ while [ $# -gt 0 ]; do
       # "--" can be used to separate fzf-tmux options from fzf options to
       # avoid conflicts
       skip=1
+      continue
       ;;
     *)
-      args+=("$1")
+      args+=("$arg")
       ;;
   esac
-  shift
+  [[ -n "$skip" ]] && args+=("$arg")
 done
 
-if ! [ -n "$TMUX_PANE" -a $lines -gt 15 ]; then
-  fzf "${args[@]}"
+if [[ -z "$TMUX" ]] || [[ "$lines" -le 15 ]]; then
+  "$fzf" "${args[@]}"
   exit $?
 fi
 
@@ -108,7 +133,7 @@ cleanup() {
   rm -f $argsf $fifo1 $fifo2 $fifo3
 
   # Remove temp window if we were zoomed
-  if [ -n "$zoomed" ]; then
+  if [[ -n "$zoomed" ]]; then
     tmux swap-pane -t $original_window \; \
       select-window -t $original_window \; \
       kill-window -t $tmp_window \; \
@@ -117,16 +142,9 @@ cleanup() {
 }
 trap cleanup EXIT SIGINT SIGTERM
 
-fail() {
-  >&2 echo "$1"
-  exit 2
-}
-fzf="$(which fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
-[ -x "$fzf" ] || fail "fzf executable not found"
-
 envs="env TERM=$TERM "
-[ -n "$FZF_DEFAULT_OPTS"    ] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
-[ -n "$FZF_DEFAULT_COMMAND" ] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
+[[ -n "$FZF_DEFAULT_OPTS"    ]] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
+[[ -n "$FZF_DEFAULT_COMMAND" ]] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
 
 mkfifo -m o+w $fifo2
 mkfifo -m o+w $fifo3
@@ -134,20 +152,22 @@ mkfifo -m o+w $fifo3
 # Build arguments to fzf
 opts=""
 for arg in "${args[@]}"; do
+  arg="${arg//\\/\\\\}"
   arg="${arg//\"/\\\"}"
   arg="${arg//\`/\\\`}"
+  arg="${arg//$/\\$}"
   opts="$opts \"$arg\""
 done
 
-if [ -n "$term" -o -t 0 ]; then
-  cat <<< "$fzf $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
+if [[ -n "$term" ]] || [[ -t 0 ]]; then
+  cat <<< "\"$fzf\" $opts > $fifo2; echo \$? > $fifo3 $close" > $argsf
   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" > $argsf
+  cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" > $argsf
   tmux set-window-option synchronize-panes off \;\
     set-window-option remain-on-exit off \;\
     split-window $opt "$envs bash $argsf" $swap \

install

@@ -2,13 +2,14 @@
 
 set -u
 
-[[ "$@" =~ --pre ]] && version=0.12.1 pre=1 ||
-                       version=0.12.1 pre=0
+[[ "$@" =~ --pre ]] && version=0.13.4 pre=1 ||
+                       version=0.13.4 pre=0
 
 auto_completion=
 key_bindings=
 update_config=2
 binary_arch=
+allow_legacy=
 
 help() {
   cat << EOF
@@ -37,6 +38,7 @@ for opt in "$@"; do
       auto_completion=1
       key_bindings=1
       update_config=1
+      allow_legacy=1
       ;;
     --key-bindings)    key_bindings=1    ;;
     --no-key-bindings) key_bindings=0    ;;
@@ -109,6 +111,14 @@ link_fzf_in_path() {
   return 1
 }
 
+try_curl() {
+  command -v curl > /dev/null && curl -fL $1 | tar -xz
+}
+
+try_wget() {
+  command -v wget > /dev/null && wget -O - $1 | tar -xz
+}
+
 download() {
   echo "Downloading bin/fzf ..."
   if [ $pre = 0 ]; then
@@ -128,14 +138,13 @@ download() {
   fi
 
   local url=https://github.com/junegunn/fzf-bin/releases/download/$version/${1}.tgz
-  if command -v curl > /dev/null; then
-    curl -fL $url | tar -xz
-  elif command -v wget > /dev/null; then
-    wget -O - $url | tar -xz
-  else
-    binary_error="curl or wget not found"
+  set -o pipefail
+  if ! (try_curl $url || try_wget $url); then
+    set +o pipefail
+    binary_error="Failed to download with curl and wget"
     return
   fi
+  set +o pipefail
 
   if [ ! -f $1 ]; then
     binary_error="Failed to download ${1}"
@@ -158,6 +167,9 @@ case "$archi" in
 esac
 
 install_ruby_fzf() {
+  if [ -z "$allow_legacy" ]; then
+    ask "Do you want to install legacy Ruby version instead?" && exit 1
+  fi
   echo "Installing legacy Ruby version ..."
 
   # ruby executable
@@ -229,22 +241,25 @@ cd "$fzf_base"
 if [ -n "$binary_error" ]; then
   if [ $binary_available -eq 0 ]; then
     echo "No prebuilt binary for $archi ..."
-    if command -v go > /dev/null; then
-      echo -n "Building binary (go get github.com/junegunn/fzf/src/fzf) ... "
-      if go get github.com/junegunn/fzf/src/fzf; then
-        echo "OK"
-        link_fzf_in_path
-      else
-        echo "Failed to build binary ..."
-        install_ruby_fzf
-      fi
+  else
+    echo "  - $binary_error !!!"
+  fi
+  if command -v go > /dev/null; then
+    echo -n "Building binary (go get -u github.com/junegunn/fzf/src/fzf) ... "
+    if [ -z "${GOPATH-}" ]; then
+      export GOPATH="${TMPDIR:-/tmp}/fzf-gopath"
+      mkdir -p "$GOPATH"
+    fi
+    if go get -u github.com/junegunn/fzf/src/fzf; then
+      echo "OK"
+      cp "$GOPATH/bin/fzf" "$fzf_base/bin/"
     else
-      echo "go executable not found. Cannot build binary ..."
+      echo "Failed to build binary ..."
       install_ruby_fzf
     fi
   else
-    echo "  - $binary_error !!!"
-    exit 1
+    echo "go executable not found. Cannot build binary ..."
+    install_ruby_fzf
   fi
 fi
 

man/man1/fzf-tmux.1

@@ -0,0 +1,54 @@
+.ig
+The MIT License (MIT)
+
+Copyright (c) 2016 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
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+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 0.13.4" "fzf-tmux - open fzf in tmux split pane"
+
+.SH NAME
+fzf-tmux - open fzf in tmux split pane
+
+.SH SYNOPSIS
+.B fzf-tmux [-u|-d [HEIGHT[%]]] [-l|-r [WIDTH[%]]] [--] [FZF OPTIONS]
+
+.SH DESCRIPTION
+fzf-tmux is a wrapper script for fzf that opens fzf in a tmux split pane. It is
+designed to work just like fzf except that it does not take up the whole
+screen. You can safely use fzf-tmux instead of fzf in your scripts as the extra
+options will be silently ignored if you're not on tmux.
+
+.SH OPTIONS
+.SS Layout
+
+(default: \fB-d 50%\fR)
+
+.TP
+.B "-u [height[%]]"
+Split above (up)
+.TP
+.B "-d [height[%]]"
+Split below (down)
+.TP
+.B "-l [width[%]]"
+Split left
+.TP
+.B "-r [width[%]]"
+Split right

man/man1/fzf.1

@@ -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 "Apr 2016" "fzf 0.12.1" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "Aug 2016" "fzf 0.13.4" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -50,10 +50,10 @@ Case-sensitive match
 .TP
 .BI "-n, --nth=" "N[,..]"
 Comma-separated list of field index expressions for limiting search scope.
-See \fBFIELD INDEX EXPRESSION\fR for details.
+See \fBFIELD INDEX EXPRESSION\fR for the details.
 .TP
 .BI "--with-nth=" "N[,..]"
-Transform each item using index expressions within finder
+Transform the presentation of each line using field index expressions
 .TP
 .BI "-d, --delimiter=" "STR"
 Field delimiter regex for \fB--nth\fR and \fB--with-nth\fR (default: AWK-style)
@@ -64,6 +64,7 @@ Do not sort the result
 .TP
 .B "--tac"
 Reverse the order of the input
+
 .RS
 e.g. \fBhistory | fzf --tac --no-sort\fR
 .RE
@@ -73,13 +74,13 @@ Comma-separated list of sort criteria to apply when the scores are tied.
 .br
 
 .br
-.BR length "  Prefers item with shorter length"
+.BR length "  Prefers line with shorter length"
 .br
-.BR begin "   Prefers item with matched substring closer to the beginning"
+.BR begin "   Prefers line with matched substring closer to the beginning"
 .br
-.BR end "     Prefers item with matched substring closer to the end"
+.BR end "     Prefers line with matched substring closer to the end"
 .br
-.BR index "   Prefers item that appeared earlier in the input stream"
+.BR index "   Prefers line that appeared earlier in the input stream"
 .br
 
 .br
@@ -90,16 +91,86 @@ Comma-separated list of sort criteria to apply when the scores are tied.
 - \fBindex\fR is implicitly appended to the list when not specified
 .br
 - Default is \fBlength\fR (or equivalently \fBlength\fR,index)
+.br
+- If \fBend\fR is found in the list, fzf will scan each line backwards
 .SS Interface
 .TP
 .B "-m, --multi"
 Enable multi-select with tab/shift-tab
 .TP
+.B "--no-mouse"
+Disable mouse
+.TP
+.BI "--bind=" "KEYBINDS"
+Comma-separated list of custom key bindings. See \fBKEY BINDINGS\fR for the
+details.
+.TP
+.B "--cycle"
+Enable cyclic scroll
+.TP
+.B "--no-hscroll"
+Disable horizontal scroll
+.TP
+.BI "--hscroll-off=" "COL"
+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
+.BI "--jump-labels=" "CHARS"
+Label characters for \fBjump\fR and \fBjump-accept\fR
+.SS Layout
+.TP
+.B "--reverse"
+Reverse orientation
+.TP
+.BI "--margin=" MARGIN
+Comma-separated expression for margins around the finder.
+.br
+
+.br
+.RS
+.BR TRBL "     Same margin for top, right, bottom, and left"
+.br
+.BR TB,RL "    Vertical, horizontal margin"
+.br
+.BR T,RL,B "   Top, horizontal, bottom margin"
+.br
+.BR T,R,B,L "  Top, right, bottom, left margin"
+.br
+
+.br
+Each part can be given in absolute number or in percentage relative to the
+terminal size with \fB%\fR suffix.
+.br
+
+.br
+e.g. \fBfzf --margin 10%\fR
+     \fBfzf --margin 1,5%\fR
+.RE
+.TP
+.B "--inline-info"
+Display finder info inline with the query
+.TP
+.BI "--prompt=" "STR"
+Input prompt (default: '> ')
+.TP
+.BI "--header=" "STR"
+The given string will be printed as the sticky header. The lines are displayed
+in the given order from top to bottom regardless of \fB--reverse\fR option, and
+are not affected by \fB--with-nth\fR. ANSI color codes are processed even when
+\fB--ansi\fR is not set.
+.TP
+.BI "--header-lines=" "N"
+The first N lines of the input are treated as the sticky header. When
+\fB--with-nth\fR is set, the lines are transformed just like the other
+lines that follow.
+.SS Display
+.TP
 .B "--ansi"
 Enable processing of ANSI color codes
 .TP
-.B "--no-mouse"
-Disable mouse
+.BI "--tabstop=" SPACES
+Number of spaces for a tab character (default: 8)
 .TP
 .BI "--color=" "[BASE_SCHEME][,COLOR:ANSI]"
 Color configuration. The name of the base color scheme is followed by custom
@@ -137,172 +208,7 @@ e.g. \fBfzf --color=bg+:24\fR
 .TP
 .B "--black"
 Use black background
-.TP
-.B "--reverse"
-Reverse orientation
-.TP
-.BI "--margin=" MARGIN
-Comma-separated expression for margins around the finder.
-.br
-
-.br
-.RS
-.BR TRBL "     Same margin for top, right, bottom, and left"
-.br
-.BR TB,RL "    Vertical, horizontal margin"
-.br
-.BR T,RL,B "   Top, horizontal, bottom margin"
-.br
-.BR T,R,B,L "  Top, right, bottom, left margin"
-.br
-
-.br
-Each part can be given in absolute number or in percentage relative to the
-terminal size with \fB%\fR suffix.
-.br
-
-.br
-e.g. \fBfzf --margin 10%\fR
-     \fBfzf --margin 1,5%\fR
-.RE
-.TP
-.BI "--tabstop=" SPACES
-Number of spaces for a tab character (default: 8)
-.TP
-.B "--cycle"
-Enable cyclic scroll
-.TP
-.B "--no-hscroll"
-Disable horizontal scroll
-.TP
-.BI "--hscroll-off=" "COL"
-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 "--inline-info"
-Display finder info inline with the query
-.TP
-.BI "--prompt=" "STR"
-Input prompt (default: '> ')
-.TP
-.BI "--toggle-sort=" "KEY"
-Key to toggle sort. For the list of the allowed key names, see \fB--bind\fR.
-.TP
-.BI "--bind=" "KEYBINDS"
-Comma-separated list of custom key bindings. Each key binding expression
-follows the following format: \fBKEY:ACTION\fR
-.RS
-e.g. \fBfzf --bind=ctrl-j:accept,ctrl-k:kill-line\fR
-.RE
-
-.RS
-.B AVAILABLE KEYS:    (SYNONYMS)
-    \fIctrl-[a-z]\fR
-    \fIalt-[a-z]\fR
-    \fIf[1-4]\fR
-    \fIenter\fR       (\fIreturn\fR \fIctrl-m\fR)
-    \fIspace\fR
-    \fIbspace\fR      (\fIbs\fR)
-    \fIalt-bspace\fR  (\fIalt-bs\fR)
-    \fItab\fR
-    \fIbtab\fR        (\fIshift-tab\fR)
-    \fIesc\fR
-    \fIdel\fR
-    \fIup\fR
-    \fIdown\fR
-    \fIleft\fR
-    \fIright\fR
-    \fIhome\fR
-    \fIend\fR
-    \fIpgup\fR        (\fIpage-up\fR)
-    \fIpgdn\fR        (\fIpage-down\fR)
-    \fIshift-left\fR
-    \fIshift-right\fR
-    \fIdouble-click\fR
-    or any single character
-.RE
-
-.RS
-  \fBACTION:               DEFAULT BINDINGS (NOTES):
-    \fBabort\fR                 \fIctrl-c  ctrl-g  ctrl-q  esc\fR
-    \fBaccept\fR                \fIenter   double-click\fR
-    \fBbackward-char\fR         \fIctrl-b  left\fR
-    \fBbackward-delete-char\fR  \fIctrl-h  bspace\fR
-    \fBbackward-kill-word\fR    \fIalt-bs\fR
-    \fBbackward-word\fR         \fIalt-b   shift-left\fR
-    \fBbeginning-of-line\fR     \fIctrl-a  home\fR
-    \fBcancel\fR
-    \fBclear-screen\fR          \fIctrl-l\fR
-    \fBdelete-char\fR           \fIdel\fR
-    \fBdelete-char/eof\fR       \fIctrl-d\fR
-    \fBdeselect-all\fR
-    \fBdown\fR                  \fIctrl-j  ctrl-n  down\fR
-    \fBend-of-line\fR           \fIctrl-e  end\fR
-    \fBexecute(...)\fR          (see below for the details)
-    \fBexecute-multi(...)\fR    (see below for the details)
-    \fBforward-char\fR          \fIctrl-f  right\fR
-    \fBforward-word\fR          \fIalt-f   shift-right\fR
-    \fBignore\fR
-    \fBkill-line\fR
-    \fBkill-word\fR             \fIalt-d\fR
-    \fBnext-history\fR          (\fIctrl-n\fR on \fB--history\fR)
-    \fBpage-down\fR             \fIpgdn\fR
-    \fBpage-up\fR               \fIpgup\fR
-    \fBprevious-history\fR      (\fIctrl-p\fR on \fB--history\fR)
-    \fBselect-all\fR
-    \fBtoggle\fR
-    \fBtoggle-all\fR
-    \fBtoggle-down\fR           \fIctrl-i  (tab)\fR
-    \fBtoggle-in\fR             (\fB--reverse\fR ? \fBtoggle-up\fR : \fBtoggle-down\fR)
-    \fBtoggle-out\fR            (\fB--reverse\fR ? \fBtoggle-down\fR : \fBtoggle-up\fR)
-    \fBtoggle-sort\fR           (equivalent to \fB--toggle-sort\fR)
-    \fBtoggle-up\fR             \fIbtab    (shift-tab)\fR
-    \fBunix-line-discard\fR     \fIctrl-u\fR
-    \fBunix-word-rubout\fR      \fIctrl-w\fR
-    \fBup\fR                    \fIctrl-k  ctrl-p  up\fR
-    \fByank\fR                  \fIctrl-y\fR
-.RE
-
-.RS
-With \fBexecute(...)\fR action, you can execute arbitrary commands without
-leaving fzf. For example, you can turn fzf into a simple file browser by
-binding \fBenter\fR key to \fBless\fR command like follows.
-
-.RS
-\fBfzf --bind "enter:execute(less {})"\fR
-.RE
-
-\fB{}\fR is the placeholder for the double-quoted string of the current line.
-If the command contains parentheses, you can use any of the following
-alternative notations to avoid parse errors.
-
-    \fBexecute[...]\fR
-    \fBexecute~...~\fR
-    \fBexecute!...!\fR
-    \fBexecute@...@\fR
-    \fBexecute#...#\fR
-    \fBexecute$...$\fR
-    \fBexecute%...%\fR
-    \fBexecute^...^\fR
-    \fBexecute&...&\fR
-    \fBexecute*...*\fR
-    \fBexecute;...;\fR
-    \fBexecute/.../\fR
-    \fBexecute|...|\fR
-    \fBexecute:...\fR
-.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.
-.RE
-
-\fBexecute-multi(...)\fR is an alternative action that executes the command
-with the selected entries when multi-select is enabled (\fB--multi\fR). With
-this action, \fB{}\fR is replaced with the double-quoted strings of the
-selected entries separated by spaces.
-
-.RE
+.SS History
 .TP
 .BI "--history=" "HISTORY_FILE"
 Load search history from the specified file and update the file on completion.
@@ -312,17 +218,34 @@ When enabled, \fBCTRL-N\fR and \fBCTRL-P\fR are automatically remapped to
 .BI "--history-size=" "N"
 Maximum number of entries in the history file (default: 1000). The file is
 automatically truncated when the number of the lines exceeds the value.
+.SS Preview
 .TP
-.BI "--header=" "STR"
-The given string will be printed as the sticky header. The lines are displayed
-in the given order from top to bottom regardless of \fB--reverse\fR option, and
-are not affected by \fB--with-nth\fR. ANSI color codes are processed even when
-\fB--ansi\fR is not set.
+.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.
+
+.RS
+e.g. \fBfzf --preview="head -$LINES {}"\fR
+.RE
 .TP
-.BI "--header-lines=" "N"
-The first N lines of the input are treated as the sticky header. When
-\fB--with-nth\fR is set, the lines are transformed just like the other
-lines that follow.
+.BI "--preview-window=" "[POSITION][:SIZE[%]][: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.
+
+.RS
+.B POSITION: (default: right)
+    \fBup
+    \fBdown
+    \fBleft
+    \fBright
+.RE
+
+.RS
+e.g. \fBfzf --preview="head {}" --preview-window=up:30%\fR
+     \fBfzf --preview="file {}" --preview-window=down:1\fR
+.RE
 .SS Scripting
 .TP
 .BI "-q, --query=" "STR"
@@ -347,6 +270,7 @@ the default enter key. When this option is set, fzf will print the name of the
 key pressed as the first line of its output (or as the second line if
 \fB--print-query\fR is also used). The line will be empty if fzf is completed
 with the default enter key.
+
 .RS
 e.g. \fBfzf --expect=ctrl-v,ctrl-t,alt-s,f1,f2,~,@\fR
 .RE
@@ -354,11 +278,12 @@ e.g. \fBfzf --expect=ctrl-v,ctrl-t,alt-s,f1,f2,~,@\fR
 .B "--sync"
 Synchronous search for multi-staged filtering. If specified, fzf will launch
 ncurses finder only after the input stream is complete.
+
 .RS
 e.g. \fBfzf --multi | fzf --sync\fR
 .RE
 
-.SH ENVIRONMENT
+.SH ENVIRONMENT VARIABLES
 .TP
 .B FZF_DEFAULT_COMMAND
 Default command to use when input is tty
@@ -412,11 +337,11 @@ occurrences of the string.
 
 .SS Anchored-match
 A term can be prefixed by \fB^\fR, or suffixed by \fB$\fR to become an
-anchored-match term. Then fzf will search for the items that start with or end
+anchored-match term. Then fzf will search for the lines that start with or end
 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 items that satisfy the
+If a term is prefixed by \fB!\fR, fzf will exclude the lines that satisfy the
 term from the result.
 
 .SS Exact-match by default
@@ -431,6 +356,119 @@ query matches entries that start with \fBcore\fR and end with either \fBgo\fR,
 
 e.g. \fB^core go$ | rb$ | py$\fR
 
+.SH KEY BINDINGS
+You can customize key bindings of fzf with \fB--bind\fR option which takes
+a comma-separated list of key binding expressions. Each key binding expression
+follows the following format: \fBKEY:ACTION\fR
+
+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
+    \fIenter\fR       (\fIreturn\fR \fIctrl-m\fR)
+    \fIspace\fR
+    \fIbspace\fR      (\fIbs\fR)
+    \fIalt-enter\fR
+    \fIalt-space\fR
+    \fIalt-bspace\fR  (\fIalt-bs\fR)
+    \fIalt-/\fR
+    \fItab\fR
+    \fIbtab\fR        (\fIshift-tab\fR)
+    \fIesc\fR
+    \fIdel\fR
+    \fIup\fR
+    \fIdown\fR
+    \fIleft\fR
+    \fIright\fR
+    \fIhome\fR
+    \fIend\fR
+    \fIpgup\fR        (\fIpage-up\fR)
+    \fIpgdn\fR        (\fIpage-down\fR)
+    \fIshift-left\fR
+    \fIshift-right\fR
+    \fIdouble-click\fR
+    or any single character
+
+  \fBACTION:               DEFAULT BINDINGS (NOTES):
+    \fBabort\fR                 \fIctrl-c  ctrl-g  ctrl-q  esc\fR
+    \fBaccept\fR                \fIenter   double-click\fR
+    \fBbackward-char\fR         \fIctrl-b  left\fR
+    \fBbackward-delete-char\fR  \fIctrl-h  bspace\fR
+    \fBbackward-kill-word\fR    \fIalt-bs\fR
+    \fBbackward-word\fR         \fIalt-b   shift-left\fR
+    \fBbeginning-of-line\fR     \fIctrl-a  home\fR
+    \fBcancel\fR
+    \fBclear-screen\fR          \fIctrl-l\fR
+    \fBdelete-char\fR           \fIdel\fR
+    \fBdelete-char/eof\fR       \fIctrl-d\fR
+    \fBdeselect-all\fR
+    \fBdown\fR                  \fIctrl-j  ctrl-n  down\fR
+    \fBend-of-line\fR           \fIctrl-e  end\fR
+    \fBexecute(...)\fR          (see below for the details)
+    \fBexecute-multi(...)\fR    (see below for the details)
+    \fBforward-char\fR          \fIctrl-f  right\fR
+    \fBforward-word\fR          \fIalt-f   shift-right\fR
+    \fBignore\fR
+    \fBjump\fR                  (EasyMotion-like 2-keystroke movement)
+    \fBjump-accept\fR           (jump and accept)
+    \fBkill-line\fR
+    \fBkill-word\fR             \fIalt-d\fR
+    \fBnext-history\fR          (\fIctrl-n\fR on \fB--history\fR)
+    \fBpage-down\fR             \fIpgdn\fR
+    \fBpage-up\fR               \fIpgup\fR
+    \fBprevious-history\fR      (\fIctrl-p\fR on \fB--history\fR)
+    \fBprint-query\fR           (print query and exit)
+    \fBselect-all\fR
+    \fBtoggle\fR
+    \fBtoggle-all\fR
+    \fBtoggle-down\fR           \fIctrl-i  (tab)\fR
+    \fBtoggle-in\fR             (\fB--reverse\fR ? \fBtoggle-up\fR : \fBtoggle-down\fR)
+    \fBtoggle-out\fR            (\fB--reverse\fR ? \fBtoggle-down\fR : \fBtoggle-up\fR)
+    \fBtoggle-preview\fR
+    \fBtoggle-sort\fR           (equivalent to \fB--toggle-sort\fR)
+    \fBtoggle-up\fR             \fIbtab    (shift-tab)\fR
+    \fBunix-line-discard\fR     \fIctrl-u\fR
+    \fBunix-word-rubout\fR      \fIctrl-w\fR
+    \fBup\fR                    \fIctrl-k  ctrl-p  up\fR
+    \fByank\fR                  \fIctrl-y\fR
+
+With \fBexecute(...)\fR action, you can execute arbitrary commands without
+leaving fzf. For example, you can turn fzf into a simple file browser by
+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.
+
+    \fBexecute[...]\fR
+    \fBexecute~...~\fR
+    \fBexecute!...!\fR
+    \fBexecute@...@\fR
+    \fBexecute#...#\fR
+    \fBexecute$...$\fR
+    \fBexecute%...%\fR
+    \fBexecute^...^\fR
+    \fBexecute&...&\fR
+    \fBexecute*...*\fR
+    \fBexecute;...;\fR
+    \fBexecute/.../\fR
+    \fBexecute|...|\fR
+    \fBexecute:...\fR
+.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.
+.RE
+
+\fBexecute-multi(...)\fR is an alternative action that executes the command
+with the selected entries when multi-select is enabled (\fB--multi\fR). With
+this action, \fB{}\fR is replaced with the quoted strings of the selected
+entries separated by spaces.
+
 .SH AUTHOR
 Junegunn Choi (\fIjunegunn.c@gmail.com\fR)
 

plugin/fzf.vim

@@ -21,7 +21,8 @@
 " OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 " WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-let s:default_height = '40%'
+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'
 let s:install = expand('<sfile>:h:h').'/install'
 let s:installed = 0
@@ -49,7 +50,7 @@ function! s:fzf_exec()
       throw 'fzf executable not found'
     endif
   endif
-  return s:exec
+  return s:shellesc(s:exec)
 endfunction
 
 function! s:tmux_enabled()
@@ -104,11 +105,106 @@ function! s:warn(msg)
   echohl None
 endfunction
 
+function! s:has_any(dict, keys)
+  for key in a:keys
+    if has_key(a:dict, key)
+      return 1
+    endif
+  endfor
+  return 0
+endfunction
+
+function! s:open(cmd, target)
+  if stridx('edit', a:cmd) == 0 && fnamemodify(a:target, ':p') ==# expand('%:p')
+    return
+  endif
+  execute a:cmd s:escape(a:target)
+endfunction
+
+function! s:common_sink(action, lines) abort
+  if len(a:lines) < 2
+    return
+  endif
+  let key = remove(a:lines, 0)
+  let cmd = get(a:action, key, 'e')
+  if len(a:lines) > 1
+    augroup fzf_swap
+      autocmd SwapExists * let v:swapchoice='o'
+            \| call s:warn('fzf: E325: swap file exists: '.expand('<afile>'))
+    augroup END
+  endif
+  try
+    let empty = empty(expand('%')) && line('$') == 1 && empty(getline(1)) && !&modified
+    let autochdir = &autochdir
+    set noautochdir
+    for item in a:lines
+      if empty
+        execute 'e' s:escape(item)
+        let empty = 0
+      else
+        call s:open(cmd, item)
+      endif
+      if exists('#BufEnter') && isdirectory(item)
+        doautocmd BufEnter
+      endif
+    endfor
+  finally
+    let &autochdir = autochdir
+    silent! autocmd! fzf_swap
+  endtry
+endfunction
+
+" name string, [opts dict, [fullscreen boolean]]
+function! fzf#wrap(name, ...)
+  if type(a:name) != type('')
+    throw 'invalid name type: string expected'
+  endif
+  let opts = copy(get(a:000, 0, {}))
+  let bang = get(a:000, 1, 0)
+
+  " Layout: g:fzf_layout (and deprecated g:fzf_height)
+  if bang
+    for key in s:layout_keys
+      if has_key(opts, key)
+        call remove(opts, key)
+      endif
+    endfor
+  elseif !s:has_any(opts, s:layout_keys)
+    if !exists('g:fzf_layout') && exists('g:fzf_height')
+      let opts.down = g:fzf_height
+    else
+      let opts = extend(opts, get(g:, 'fzf_layout', s:default_layout))
+    endif
+  endif
+
+  " History: g:fzf_history_dir
+  let opts.options = get(opts, 'options', '')
+  if len(get(g:, 'fzf_history_dir', ''))
+    let dir = expand(g:fzf_history_dir)
+    if !isdirectory(dir)
+      call mkdir(dir, 'p')
+    endif
+    let opts.options = join(['--history', s:escape(dir.'/'.a:name), opts.options])
+  endif
+
+  " Action: g:fzf_action
+  if !s:has_any(opts, ['sink', 'sink*'])
+    let opts._action = get(g:, 'fzf_action', s:default_action)
+    let opts.options .= ' --expect='.join(keys(opts._action), ',')
+    function! opts.sink(lines) abort
+      return s:common_sink(self._action, a:lines)
+    endfunction
+    let opts['sink*'] = remove(opts, 'sink')
+  endif
+
+  return opts
+endfunction
+
 function! fzf#run(...) abort
 try
   let oshell = &shell
   set shell=sh
-  if has('nvim') && bufexists('term://*:FZF')
+  if has('nvim') && len(filter(range(1, bufnr('$')), 'bufname(v:val) =~# ";#FZF"'))
     call s:warn('FZF is already running!')
     return []
   endif
@@ -122,7 +218,9 @@ try
   endtry
 
   if !has_key(dict, 'source') && !empty($FZF_DEFAULT_COMMAND)
-    let dict.source = $FZF_DEFAULT_COMMAND
+    let temps.source = tempname()
+    call writefile(split($FZF_DEFAULT_COMMAND, "\n"), temps.source)
+    let dict.source = (empty($SHELL) ? 'sh' : $SHELL) . ' ' . s:shellesc(temps.source)
   endif
 
   if has_key(dict, 'source')
@@ -135,21 +233,21 @@ try
       call writefile(source, temps.input)
       let prefix = 'cat '.s:shellesc(temps.input).'|'
     else
-      throw 'Invalid source type'
+      throw 'invalid source type'
     endif
   else
     let prefix = ''
   endif
-  let tmux = !has('nvim') && s:tmux_enabled() && s:splittable(dict)
+  let tmux = (!has('nvim') || get(g:, 'fzf_prefer_tmux', 0)) && s:tmux_enabled() && s:splittable(dict)
   let command = prefix.(tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
 
-  if has('nvim')
+  if has('nvim') && !tmux
     return s:execute_term(dict, command, temps)
   endif
 
-  let ret = tmux ? s:execute_tmux(dict, command, temps) : s:execute(dict, command, temps)
-  call s:popd(dict, ret)
-  return ret
+  let lines = tmux ? s:execute_tmux(dict, command, temps) : s:execute(dict, command, temps)
+  call s:callback(dict, lines)
+  return lines
 finally
   let &shell = oshell
 endtry
@@ -179,7 +277,7 @@ function! s:fzf_tmux(dict)
     endif
   endfor
   return printf('LINES=%d COLUMNS=%d %s %s %s --',
-    \ &lines, &columns, s:fzf_tmux, size, (has_key(a:dict, 'source') ? '' : '-'))
+    \ &lines, &columns, s:shellesc(s:fzf_tmux), size, (has_key(a:dict, 'source') ? '' : '-'))
 endfunction
 
 function! s:splittable(dict)
@@ -193,29 +291,24 @@ function! s:pushd(dict)
       return 1
     endif
     let a:dict.prev_dir = cwd
-    execute 'chdir' s:escape(a:dict.dir)
+    execute 'lcd' s:escape(a:dict.dir)
     let a:dict.dir = getcwd()
     return 1
   endif
   return 0
 endfunction
 
-function! s:popd(dict, lines)
-  " Since anything can be done in the sink function, there is no telling that
-  " the change of the working directory was made by &autochdir setting.
-  "
-  " We use the following heuristic to determine whether to restore CWD:
-  " - Always restore the current directory when &autochdir is disabled.
-  "   FIXME This makes it impossible to change directory from inside the sink
-  "   function when &autochdir is not used.
-  " - In case of an error or an interrupt, a:lines will be empty.
-  "   And it will be an array of a single empty string when fzf was finished
-  "   without a match. In these cases, we presume that the change of the
-  "   directory is not expected and should be undone.
-  if has_key(a:dict, 'prev_dir') &&
-        \ (!&autochdir || (empty(a:lines) || len(a:lines) == 1 && empty(a:lines[0])))
-    execute 'chdir' s:escape(remove(a:dict, 'prev_dir'))
+augroup fzf_popd
+  autocmd!
+  autocmd WinEnter * call s:dopopd()
+augroup END
+
+function! s:dopopd()
+  if !exists('w:fzf_prev_dir') || exists('*haslocaldir') && !haslocaldir()
+    return
   endif
+  execute 'lcd' s:escape(w:fzf_prev_dir)
+  unlet w:fzf_prev_dir
 endfunction
 
 function! s:xterm_launcher()
@@ -255,8 +348,9 @@ function! s:execute(dict, command, temps) abort
     let command = escaped
   endif
   execute 'silent !'.command
+  let exit_status = v:shell_error
   redraw!
-  return s:exit_handler(v:shell_error, command) ? s:callback(a:dict, a:temps) : []
+  return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
 endfunction
 
 function! s:execute_tmux(dict, command, temps) abort
@@ -267,8 +361,9 @@ function! s:execute_tmux(dict, command, temps) abort
   endif
 
   call system(command)
+  let exit_status = v:shell_error
   redraw!
-  return s:exit_handler(v:shell_error, command) ? s:callback(a:dict, a:temps) : []
+  return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
 endfunction
 
 function! s:calc_size(max, val, dict)
@@ -285,6 +380,7 @@ function! s:calc_size(max, val, dict)
 
   let opts = get(a:dict, 'options', '').$FZF_DEFAULT_OPTS
   let margin = stridx(opts, '--inline-info') > stridx(opts, '--no-inline-info') ? 1 : 2
+  let margin += stridx(opts, '--header') > stridx(opts, '--no-header')
   return srcsz >= 0 ? min([srcsz + margin, size]) : size
 endfunction
 
@@ -298,7 +394,7 @@ function! s:split(dict)
   \ 'down':  ['botright', 'resize', &lines],
   \ 'left':  ['vertical topleft', 'vertical resize', &columns],
   \ 'right': ['vertical botright', 'vertical resize', &columns] }
-  let s:ppos = s:getpos()
+  let ppos = s:getpos()
   try
     for [dir, triple] in items(directions)
       let val = get(a:dict, dir, '')
@@ -311,7 +407,7 @@ function! s:split(dict)
         endif
         execute cmd sz.'new'
         execute resz sz
-        return {}
+        return [ppos, {}]
       endif
     endfor
     if s:present(a:dict, 'window')
@@ -319,72 +415,104 @@ function! s:split(dict)
     else
       execute (tabpagenr()-1).'tabnew'
     endif
-    return { '&l:wfw': &l:wfw, '&l:wfh': &l:wfh }
+    return [ppos, { '&l:wfw': &l:wfw, '&l:wfh': &l:wfh }]
   finally
     setlocal winfixwidth winfixheight
   endtry
 endfunction
 
 function! s:execute_term(dict, command, temps) abort
-  let winopts = s:split(a:dict)
-
-  let fzf = { 'buf': bufnr('%'), 'dict': a:dict, 'temps': a:temps, 'name': 'FZF', 'winopts': winopts }
-  let s:command = a:command
+  let [ppos, winopts] = s:split(a:dict)
+  let fzf = { 'buf': bufnr('%'), 'ppos': ppos, 'dict': a:dict, 'temps': a:temps,
+            \ 'winopts': winopts, '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 #
+      " No other listed buffer
+      if bufnr('') == self.buf
+        enew
+      endif
+    endif
+  endfunction
   function! fzf.on_exit(id, code)
-    let pos = s:getpos()
-    let inplace = pos == s:ppos " {'window': 'enew'}
-    if inplace
+    if s:getpos() == self.ppos " {'window': 'enew'}
       for [opt, val] in items(self.winopts)
         execute 'let' opt '=' val
       endfor
+      call self.switch_back(1)
     else
       if bufnr('') == self.buf
         " We use close instead of bd! since Vim does not close the split when
         " there's no other listed buffer (nvim +'set nobuflisted')
         close
       endif
-      if pos.tab == s:ppos.tab
-        wincmd p
-      endif
+      execute 'tabnext' self.ppos.tab
+      execute self.ppos.win.'wincmd w'
     endif
 
-    if !s:exit_handler(a:code, s:command, 1)
+    if bufexists(self.buf)
+      execute 'bd!' self.buf
+    endif
+
+    if !s:exit_handler(a:code, self.command, 1)
       return
     endif
 
     call s:pushd(self.dict)
-    let ret = []
-    try
-      let ret = s:callback(self.dict, self.temps)
-
-      if inplace && bufnr('') == self.buf
-        execute "normal! \<c-^>"
-        " No other listed buffer
-        if bufnr('') == self.buf
-          bd!
-        endif
-      endif
-    finally
-      call s:popd(self.dict, ret)
-    endtry
+    let lines = s:collect(self.temps)
+    call s:callback(self.dict, lines)
+    call self.switch_back(s:getpos() == self.ppos)
   endfunction
 
-  call s:pushd(a:dict)
-  call termopen(a:command, fzf)
-  call s:popd(a:dict, [])
+  try
+    if s:present(a:dict, 'dir')
+      execute 'lcd' s:escape(a:dict.dir)
+    endif
+    call termopen(a:command . ';#FZF', fzf)
+  finally
+    if s:present(a:dict, 'dir')
+      lcd -
+    endif
+  endtry
   setlocal nospell bufhidden=wipe nobuflisted
   setf fzf
   startinsert
   return []
 endfunction
 
-function! s:callback(dict, temps) abort
-let lines = []
-try
-  if filereadable(a:temps.result)
-    let lines = readfile(a:temps.result)
+function! s:collect(temps) abort
+  try
+    return filereadable(a:temps.result) ? readfile(a:temps.result) : []
+  finally
+    for tf in values(a:temps)
+      silent! call delete(tf)
+    endfor
+  endtry
+endfunction
+
+function! s:callback(dict, lines) abort
+  " Since anything can be done in the sink function, there is no telling that
+  " the change of the working directory was made by &autochdir setting.
+  "
+  " We use the following heuristic to determine whether to restore CWD:
+  " - Always restore the current directory when &autochdir is disabled.
+  "   FIXME This makes it impossible to change directory from inside the sink
+  "   function when &autochdir is not used.
+  " - In case of an error or an interrupt, a:lines will be empty.
+  "   And it will be an array of a single empty string when fzf was finished
+  "   without a match. In these cases, we presume that the change of the
+  "   directory is not expected and should be undone.
+  let popd = has_key(a:dict, 'prev_dir') &&
+        \ (!&autochdir || (empty(a:lines) || len(a:lines) == 1 && empty(a:lines[0])))
+  if popd
+    let w:fzf_prev_dir = a:dict.prev_dir
+  endif
+
+  try
     if has_key(a:dict, 'sink')
-      for line in lines
+      for line in a:lines
         if type(a:dict.sink) == 2
           call a:dict.sink(line)
         else
@@ -393,76 +521,36 @@ try
       endfor
     endif
     if has_key(a:dict, 'sink*')
-      call a:dict['sink*'](lines)
+      call a:dict['sink*'](a:lines)
     endif
-  endif
+  catch
+    if stridx(v:exception, ':E325:') < 0
+      echoerr v:exception
+    endif
+  endtry
 
-  for tf in values(a:temps)
-    silent! call delete(tf)
-  endfor
-catch
-  if stridx(v:exception, ':E325:') < 0
-    echoerr v:exception
+  " We may have opened a new window or tab
+  if popd
+    let w:fzf_prev_dir = a:dict.prev_dir
+    call s:dopopd()
   endif
-finally
-  return lines
-endtry
 endfunction
 
 let s:default_action = {
-  \ 'ctrl-m': 'e',
   \ 'ctrl-t': 'tab split',
   \ 'ctrl-x': 'split',
   \ 'ctrl-v': 'vsplit' }
 
-function! s:cmd_callback(lines) abort
-  if empty(a:lines)
-    return
-  endif
-  let key = remove(a:lines, 0)
-  let cmd = get(s:action, key, 'e')
-  if len(a:lines) > 1
-    augroup fzf_swap
-      autocmd SwapExists * let v:swapchoice='o'
-            \| call s:warn('fzf: E325: swap file exists: '.expand('<afile>'))
-    augroup END
-  endif
-  try
-    let empty = empty(expand('%')) && line('$') == 1 && empty(getline(1)) && !&modified
-    let autochdir = &autochdir
-    set noautochdir
-    for item in a:lines
-      if empty
-        execute 'e' s:escape(item)
-        let empty = 0
-      else
-        execute cmd s:escape(item)
-      endif
-      if exists('#BufEnter') && isdirectory(item)
-        doautocmd BufEnter
-      endif
-    endfor
-  finally
-    let &autochdir = autochdir
-    silent! autocmd! fzf_swap
-  endtry
-endfunction
-
 function! s:cmd(bang, ...) abort
-  let s:action = get(g:, 'fzf_action', s:default_action)
-  let args = extend(['--expect='.join(keys(s:action), ',')], a:000)
+  let args = copy(a:000)
   let opts = {}
-  if len(args) > 0 && isdirectory(expand(args[-1]))
+  if len(args) && isdirectory(expand(args[-1]))
     let opts.dir = substitute(remove(args, -1), '\\\(["'']\)', '\1', 'g')
   endif
-  if !a:bang
-    let opts.down = get(g:, 'fzf_height', get(g:, 'fzf_tmux_height', s:default_height))
-  endif
-  call fzf#run(extend({'options': join(args), 'sink*': function('<sid>cmd_callback')}, opts))
+  call fzf#run(fzf#wrap('FZF', extend({'options': join(args)}, opts), a:bang))
 endfunction
 
 command! -nargs=* -complete=dir -bang FZF call s:cmd(<bang>0, <f-args>)
 
 let &cpo = s:cpo_save
 unlet s:cpo_save
-

shell/completion.bash

@@ -14,7 +14,7 @@
 if ! declare -f _fzf_compgen_path > /dev/null; then
   _fzf_compgen_path() {
     echo "$1"
-    \find -L "$1" \
+    command find -L "$1" \
       -name .git -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
   }
@@ -22,7 +22,7 @@ fi
 
 if ! declare -f _fzf_compgen_dir > /dev/null; then
   _fzf_compgen_dir() {
-    \find -L "$1" \
+    command find -L "$1" \
       -name .git -prune -o -name .svn -prune -o -type d \
       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
   }
@@ -108,7 +108,7 @@ _fzf_handle_dynamic_completion() {
   elif [ -n "$_fzf_completion_loader" ]; then
     _completion_loader "$@"
     ret=$?
-    eval "$(complete | \grep "\-F.* $orig_cmd$" | _fzf_orig_completion_filter)"
+    eval "$(complete | command grep "\-F.* $orig_cmd$" | _fzf_orig_completion_filter)"
     source "${BASH_SOURCE[0]}"
     return $ret
   fi
@@ -213,15 +213,16 @@ _fzf_complete_kill() {
 
 _fzf_complete_telnet() {
   _fzf_complete '+m' "$@" < <(
-    \grep -v '^\s*\(#\|$\)' /etc/hosts | \grep -Fv '0.0.0.0' |
+    command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0' |
         awk '{if (length($2) > 0) {print $2}}' | sort -u
   )
 }
 
 _fzf_complete_ssh() {
   _fzf_complete '+m' "$@" < <(
-    cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | \grep -i '^host' | \grep -v '*') \
-        <(\grep -v '^\s*\(#\|$\)' /etc/hosts | \grep -Fv '0.0.0.0') |
+    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 -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
         awk '{if (length($2) > 0) {print $2}}' | sort -u
   )
 }
@@ -262,8 +263,8 @@ x_cmds="kill ssh telnet unset unalias export"
 # Preserve existing completion
 if [ "$_fzf_completion_loaded" != '0.11.3' ]; then
   # Really wish I could use associative array but OSX comes with bash 3.2 :(
-  eval $(complete | \grep '\-F' | \grep -v _fzf_ |
-    \grep -E " ($(echo $d_cmds $a_cmds $x_cmds | sed 's/ /|/g' | sed 's/+/\\+/g'))$" | _fzf_orig_completion_filter)
+  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
 

shell/completion.zsh

@@ -14,7 +14,7 @@
 if ! declare -f _fzf_compgen_path > /dev/null; then
   _fzf_compgen_path() {
     echo "$1"
-    \find -L "$1" \
+    command find -L "$1" \
       -name .git -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
   }
@@ -22,7 +22,7 @@ fi
 
 if ! declare -f _fzf_compgen_dir > /dev/null; then
   _fzf_compgen_dir() {
-    \find -L "$1" \
+    command find -L "$1" \
       -name .git -prune -o -name .svn -prune -o -type d \
       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
   }
@@ -31,7 +31,7 @@ fi
 ###########################################################
 
 __fzf_generic_path_completion() {
-  local base lbuf compgen fzf_opts suffix tail fzf dir leftover matches nnm
+  local base lbuf compgen fzf_opts suffix tail fzf dir leftover matches
   # (Q) flag removes a quoting level: "foo\ bar" => "foo bar"
   base=${(Q)1}
   lbuf=$2
@@ -41,10 +41,7 @@ __fzf_generic_path_completion() {
   tail=$6
   [ ${FZF_TMUX:-1} -eq 1 ] && fzf="fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%}" || fzf="fzf"
 
-  if ! setopt | \grep nonomatch > /dev/null; then
-    nnm=1
-    setopt nonomatch
-  fi
+  setopt localoptions nonomatch
   dir="$base"
   while [ 1 ]; do
     if [ -z "$dir" -o -d ${~dir} ]; then
@@ -61,12 +58,12 @@ __fzf_generic_path_completion() {
         LBUFFER="$lbuf$matches$tail"
       fi
       zle redisplay
+      typeset -f zle-line-init >/dev/null && zle zle-line-init
       break
     fi
     dir=$(dirname "$dir")
     dir=${dir%/}/
   done
-  [ -n "$nnm" ] && unsetopt nonomatch
 }
 
 _fzf_path_completion() {
@@ -80,7 +77,7 @@ _fzf_dir_completion() {
 }
 
 _fzf_feed_fifo() (
-  rm -f "$1"
+  command rm -f "$1"
   mkfifo "$1"
   cat <&0 > "$1" &
 )
@@ -101,20 +98,22 @@ _fzf_complete() {
     LBUFFER="$lbuf$matches"
   fi
   zle redisplay
-  rm -f "$fifo"
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  command rm -f "$fifo"
 }
 
 _fzf_complete_telnet() {
   _fzf_complete '+m' "$@" < <(
-    \grep -v '^\s*\(#\|$\)' /etc/hosts | \grep -Fv '0.0.0.0' |
+    command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0' |
         awk '{if (length($2) > 0) {print $2}}' | sort -u
   )
 }
 
 _fzf_complete_ssh() {
   _fzf_complete '+m' "$@" < <(
-    cat <(cat ~/.ssh/config /etc/ssh/ssh_config 2> /dev/null | \grep -i '^host' | \grep -v '*') \
-        <(\grep -v '^\s*\(#\|$\)' /etc/hosts | \grep -Fv '0.0.0.0') |
+    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 -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
         awk '{if (length($2) > 0) {print $2}}' | sort -u
   )
 }
@@ -139,7 +138,7 @@ _fzf_complete_unalias() {
 
 fzf-completion() {
   local tokens cmd prefix trigger tail fzf matches lbuf d_cmds
-  setopt localoptions noshwordsplit
+  setopt localoptions noshwordsplit noksh_arrays
 
   # http://zsh.sourceforge.net/FAQ/zshfaq03.html
   # http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags
@@ -164,6 +163,7 @@ fzf-completion() {
       LBUFFER="$LBUFFER$matches"
     fi
     zle redisplay
+    typeset -f zle-line-init >/dev/null && zle zle-line-init
   # Trigger sequence given
   elif [ ${#tokens} -gt 1 -a "$tail" = "$trigger" ]; then
     d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir})
@@ -184,8 +184,11 @@ fzf-completion() {
   fi
 }
 
-[ -z "$fzf_default_completion" ] &&
-  fzf_default_completion=$(bindkey '^I' | \grep -v undefined-key | awk '{print $2}')
+[ -z "$fzf_default_completion" ] && {
+  binding=$(bindkey '^I')
+  [[ $binding =~ 'undefined-key' ]] || fzf_default_completion=$binding[(w)2]
+  unset binding
+}
 
 zle     -N   fzf-completion
 bindkey '^I' fzf-completion

shell/key-bindings.bash

@@ -5,7 +5,7 @@ __fzf_select__() {
     -o -type f -print \
     -o -type d -print \
     -o -type l -print 2> /dev/null | sed 1d | cut -b3-"}"
-  eval "$cmd" | fzf -m | while read -r item; do
+  eval "$cmd | fzf -m $FZF_CTRL_T_OPTS" | while read -r item; do
     printf '%q ' "$item"
   done
   echo
@@ -26,7 +26,7 @@ __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") bash -c 'source \"${BASH_SOURCE[0]}\"; tmux send-keys -t $TMUX_PANE \"\$(__fzf_select__)\"'"
+  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\"'"
 }
 
 fzf-file-widget() {
@@ -43,7 +43,7 @@ __fzf_cd__() {
   local cmd dir
   cmd="${FZF_ALT_C_COMMAND:-"command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
     -o -type d -print 2> /dev/null | sed 1d | cut -b3-"}"
-  dir=$(eval "$cmd" | $(__fzfcmd) +m) && printf 'cd %q' "$dir"
+  dir=$(eval "$cmd | $(__fzfcmd) +m $FZF_ALT_C_OPTS") && printf 'cd %q' "$dir"
 }
 
 __fzf_history__() (
@@ -51,8 +51,8 @@ __fzf_history__() (
   shopt -u nocaseglob nocasematch
   line=$(
     HISTTIMEFORMAT= history |
-    $(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS |
-    \grep '^ *[0-9]') &&
+    eval "$(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r $FZF_CTRL_R_OPTS" |
+    command grep '^ *[0-9]') &&
     if [[ $- =~ H ]]; then
       sed 's/^ *\([0-9]*\)\** .*/!\1/' <<< "$line"
     else
@@ -67,7 +67,7 @@ __fzf_use_tmux__() {
 [ $BASH_VERSINFO -gt 3 ] && __use_bind_x=1 || __use_bind_x=0
 __fzf_use_tmux__ && __use_tmux=1 || __use_tmux=0
 
-if [[ $'\n'$(set -o) != *$'\n'vi*on* ]]; then
+if [[ ! -o vi ]]; then
   # Required to refresh the prompt after fzf
   bind '"\er": redraw-current-line'
   bind '"\e^": history-expand-line'
@@ -82,10 +82,10 @@ if [[ $'\n'$(set -o) != *$'\n'vi*on* ]]; then
   fi
 
   # CTRL-R - Paste the selected command from history into the command line
-  bind '"\C-r": " \C-e\C-u$(__fzf_history__)\e\C-e\e^\er"'
+  bind '"\C-r": " \C-e\C-u`__fzf_history__`\e\C-e\e^\er"'
 
   # ALT-C - cd into the selected directory
-  bind '"\ec": " \C-e\C-u$(__fzf_cd__)\e\C-e\er\C-m"'
+  bind '"\ec": " \C-e\C-u`__fzf_cd__`\e\C-e\er\C-m"'
 else
   # We'd usually use "\e" to enter vi-movement-mode so we can do our magic,
   # but this incurs a very noticeable delay of a half second or so,

shell/key-bindings.fish

@@ -19,7 +19,7 @@ function fzf_key_bindings
       -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 > $TMPDIR/fzf.result"
+    eval "$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
     commandline -f repaint
     rm -f $TMPDIR/fzf.result
@@ -37,7 +37,7 @@ function fzf_key_bindings
     command find -L . \\( -path '*/\\.*' -o -fstype 'dev' -o -fstype 'proc' \\) -prune \
       -o -type d -print 2> /dev/null | sed 1d | cut -b3-"
     # Fish hangs if the command before pipe redirects (2> /dev/null)
-    eval "$FZF_ALT_C_COMMAND | "(__fzfcmd)" +m > $TMPDIR/fzf.result"
+    eval "$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)
     commandline -f repaint

shell/key-bindings.zsh

@@ -8,10 +8,13 @@ __fsel() {
     -o -type f -print \
     -o -type d -print \
     -o -type l -print 2> /dev/null | sed 1d | cut -b3-"}"
-  eval "$cmd" | $(__fzfcmd) -m | while read item; do
+  setopt localoptions pipefail 2> /dev/null
+  eval "$cmd | $(__fzfcmd) -m $FZF_CTRL_T_OPTS" | while read item; do
     echo -n "${(q)item} "
   done
+  local ret=$?
   echo
+  return $ret
 }
 
 __fzfcmd() {
@@ -20,7 +23,10 @@ __fzfcmd() {
 
 fzf-file-widget() {
   LBUFFER="${LBUFFER}$(__fsel)"
+  local ret=$?
   zle redisplay
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  return $ret
 }
 zle     -N   fzf-file-widget
 bindkey '^T' fzf-file-widget
@@ -29,8 +35,12 @@ bindkey '^T' fzf-file-widget
 fzf-cd-widget() {
   local cmd="${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-"}"
-  cd "${$(eval "$cmd" | $(__fzfcmd) +m):-.}"
+  setopt localoptions pipefail 2> /dev/null
+  cd "${$(eval "$cmd | $(__fzfcmd) +m $FZF_ALT_C_OPTS"):-.}"
+  local ret=$?
   zle reset-prompt
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  return $ret
 }
 zle     -N    fzf-cd-widget
 bindkey '\ec' fzf-cd-widget
@@ -38,7 +48,9 @@ bindkey '\ec' fzf-cd-widget
 # CTRL-R - Paste the selected command from history into the command line
 fzf-history-widget() {
   local selected num
-  selected=( $(fc -l 1 | $(__fzfcmd) +s --tac +m -n2..,.. --tiebreak=index --toggle-sort=ctrl-r ${=FZF_CTRL_R_OPTS} -q "${LBUFFER//$/\\$}") )
+  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 ${(q)LBUFFER}") )
+  local ret=$?
   if [ -n "$selected" ]; then
     num=$selected[1]
     if [ -n "$num" ]; then
@@ -46,6 +58,8 @@ fzf-history-widget() {
     fi
   fi
   zle redisplay
+  typeset -f zle-line-init >/dev/null && zle zle-line-init
+  return $ret
 }
 zle     -N   fzf-history-widget
 bindkey '^R' fzf-history-widget

src/Makefile

@@ -7,10 +7,6 @@ else ifeq ($(UNAME_S),Linux)
 endif
 endif
 
-ifneq ($(shell uname -m),x86_64)
-$(error "Build on $(UNAME_M) is not supported, yet.")
-endif
-
 SOURCES     := $(wildcard *.go */*.go)
 ROOTDIR     := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 BINDIR      := $(shell dirname $(ROOTDIR))/bin
@@ -26,15 +22,22 @@ RELEASE64   := fzf-$(VERSION)-$(GOOS)_amd64
 RELEASEARM7 := fzf-$(VERSION)-$(GOOS)_arm7
 export GOPATH
 
-all: release
+UNAME_M := $(shell uname -m)
+ifeq ($(UNAME_M),x86_64)
+	BINARY := $(BINARY64)
+else ifeq ($(UNAME_M),i686)
+	BINARY := $(BINARY32)
+else
+$(error "Build on $(UNAME_M) is not supported, yet.")
+endif
 
-release: test build
+all: fzf/$(BINARY)
+
+release: test fzf/$(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)
 
-build: fzf/$(BINARY32) fzf/$(BINARY64)
-
 $(SRCDIR):
 	mkdir -p $(shell dirname $(SRCDIR))
 	ln -s $(ROOTDIR) $(SRCDIR)
@@ -44,7 +47,7 @@ deps: $(SRCDIR) $(SOURCES)
 
 android-build: $(SRCDIR)
 	cd $(SRCDIR) && GOARCH=arm GOARM=7 CGO_ENABLED=1 go get
-	cd $(SRCDIR)/fzf && GOARCH=arm GOARM=7 CGO_ENABLED=1 go build -a -ldflags="-extldflags=-pie" -o $(BINARYARM7)
+	cd $(SRCDIR)/fzf && GOARCH=arm GOARM=7 CGO_ENABLED=1 go build -a -ldflags="-w -extldflags=-pie" -o $(BINARYARM7)
 	cd $(SRCDIR)/fzf && cp $(BINARYARM7) $(RELEASEARM7) && tar -czf $(RELEASEARM7).tgz $(RELEASEARM7) && \
 	rm -f $(RELEASEARM7)
 
@@ -54,20 +57,20 @@ test: deps
 install: $(BINDIR)/fzf
 
 uninstall:
-	rm -f $(BINDIR)/fzf $(BINDIR)/$(BINARY64)
+	rm -f $(BINDIR)/fzf $(BINDIR)/$(BINARY)
 
 clean:
 	cd fzf && rm -f fzf-*
 
 fzf/$(BINARY32): deps
-	cd fzf && GOARCH=386 CGO_ENABLED=1 go build -a -tags "$(TAGS)" -o $(BINARY32)
+	cd fzf && GOARCH=386 CGO_ENABLED=1 go build -a -ldflags -w -tags "$(TAGS)" -o $(BINARY32)
 
 fzf/$(BINARY64): deps
-	cd fzf && go build -a -tags "$(TAGS)" -o $(BINARY64)
+	cd fzf && go build -a -ldflags -w -tags "$(TAGS)" -o $(BINARY64)
 
-$(BINDIR)/fzf: fzf/$(BINARY64) | $(BINDIR)
-	cp -f fzf/$(BINARY64) $(BINDIR)
-	cd $(BINDIR) && ln -sf $(BINARY64) fzf
+$(BINDIR)/fzf: fzf/$(BINARY) | $(BINDIR)
+	cp -f fzf/$(BINARY) $(BINDIR)
+	cd $(BINDIR) && ln -sf $(BINARY) fzf
 
 $(BINDIR):
 	mkdir -p $@
@@ -98,7 +101,7 @@ centos: docker-centos
 
 linux: docker-centos
 	docker run $(DOCKEROPTS) junegunn/centos-sandbox \
-		/bin/bash -ci 'cd /fzf/src; make TAGS=static'
+		/bin/bash -ci 'cd /fzf/src; make TAGS=static release'
 
 ubuntu-android: docker-android
 	docker run $(DOCKEROPTS) junegunn/android-sandbox \
@@ -108,6 +111,6 @@ android: docker-android
 	docker run $(DOCKEROPTS) junegunn/android-sandbox \
 		/bin/bash -ci 'cd /fzf/src; GOOS=android make android-build'
 
-.PHONY: all build deps release test install uninstall clean \
+.PHONY: all deps release test install uninstall clean \
 	linux arch ubuntu centos docker-arch docker-ubuntu docker-centos \
 	android-build docker-android ubuntu-android android

src/README.md

@@ -79,7 +79,7 @@ Build
 
 ```sh
 # Build fzf executables and tarballs
-make
+make release
 
 # Install the executable to ../bin directory
 make install

src/algo/algo.go

@@ -15,11 +15,18 @@ import (
  * In short: They try to do as little work as possible.
  */
 
-func runeAt(runes []rune, index int, max int, forward bool) rune {
+func indexAt(index int, max int, forward bool) int {
 	if forward {
-		return runes[index]
+		return index
 	}
-	return runes[max-index-1]
+	return max - index - 1
+}
+
+func runeAt(text util.Chars, index int, max int, forward bool) rune {
+	if forward {
+		return text.Get(index)
+	}
+	return text.Get(max - index - 1)
 }
 
 // Result conatins the results of running a match function.
@@ -42,14 +49,14 @@ const (
 	charNumber
 )
 
-func evaluateBonus(caseSensitive bool, runes []rune, pattern []rune, sidx int, eidx int) int32 {
+func evaluateBonus(caseSensitive bool, text util.Chars, pattern []rune, sidx int, eidx int) int32 {
 	var bonus int32
 	pidx := 0
 	lenPattern := len(pattern)
 	consecutive := false
 	prevClass := charNonWord
-	for index := 0; index < eidx; index++ {
-		char := runes[index]
+	for index := util.Max(0, sidx-1); index < eidx; index++ {
+		char := text.Get(index)
 		var class charClass
 		if unicode.IsLower(char) {
 			class = charLower
@@ -107,7 +114,7 @@ func evaluateBonus(caseSensitive bool, runes []rune, pattern []rune, sidx int, e
 }
 
 // FuzzyMatch performs fuzzy-match
-func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune) Result {
+func FuzzyMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
 	if len(pattern) == 0 {
 		return Result{0, 0, 0}
 	}
@@ -125,11 +132,11 @@ func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 	sidx := -1
 	eidx := -1
 
-	lenRunes := len(runes)
+	lenRunes := text.Length()
 	lenPattern := len(pattern)
 
-	for index := range runes {
-		char := runeAt(runes, index, lenRunes, forward)
+	for index := 0; index < lenRunes; index++ {
+		char := runeAt(text, index, lenRunes, forward)
 		// This is considerably faster than blindly applying strings.ToLower to the
 		// whole string
 		if !caseSensitive {
@@ -142,7 +149,7 @@ func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 				char = unicode.To(unicode.LowerCase, char)
 			}
 		}
-		pchar := runeAt(pattern, pidx, lenPattern, forward)
+		pchar := pattern[indexAt(pidx, lenPattern, forward)]
 		if char == pchar {
 			if sidx < 0 {
 				sidx = index
@@ -157,7 +164,7 @@ func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 	if sidx >= 0 && eidx >= 0 {
 		pidx--
 		for index := eidx - 1; index >= sidx; index-- {
-			char := runeAt(runes, index, lenRunes, forward)
+			char := runeAt(text, index, lenRunes, forward)
 			if !caseSensitive {
 				if char >= 'A' && char <= 'Z' {
 					char += 32
@@ -166,7 +173,7 @@ func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 				}
 			}
 
-			pchar := runeAt(pattern, pidx, lenPattern, forward)
+			pchar := pattern[indexAt(pidx, lenPattern, forward)]
 			if char == pchar {
 				if pidx--; pidx < 0 {
 					sidx = index
@@ -182,7 +189,7 @@ func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 		}
 
 		return Result{int32(sidx), int32(eidx),
-			evaluateBonus(caseSensitive, runes, pattern, sidx, eidx)}
+			evaluateBonus(caseSensitive, text, pattern, sidx, eidx)}
 	}
 	return Result{-1, -1, 0}
 }
@@ -194,12 +201,12 @@ func FuzzyMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 //
 // We might try to implement better algorithms in the future:
 // http://en.wikipedia.org/wiki/String_searching_algorithm
-func ExactMatchNaive(caseSensitive bool, forward bool, runes []rune, pattern []rune) Result {
+func ExactMatchNaive(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
 	if len(pattern) == 0 {
 		return Result{0, 0, 0}
 	}
 
-	lenRunes := len(runes)
+	lenRunes := text.Length()
 	lenPattern := len(pattern)
 
 	if lenRunes < lenPattern {
@@ -208,7 +215,7 @@ func ExactMatchNaive(caseSensitive bool, forward bool, runes []rune, pattern []r
 
 	pidx := 0
 	for index := 0; index < lenRunes; index++ {
-		char := runeAt(runes, index, lenRunes, forward)
+		char := runeAt(text, index, lenRunes, forward)
 		if !caseSensitive {
 			if char >= 'A' && char <= 'Z' {
 				char += 32
@@ -216,7 +223,7 @@ func ExactMatchNaive(caseSensitive bool, forward bool, runes []rune, pattern []r
 				char = unicode.To(unicode.LowerCase, char)
 			}
 		}
-		pchar := runeAt(pattern, pidx, lenPattern, forward)
+		pchar := pattern[indexAt(pidx, lenPattern, forward)]
 		if pchar == char {
 			pidx++
 			if pidx == lenPattern {
@@ -229,7 +236,7 @@ func ExactMatchNaive(caseSensitive bool, forward bool, runes []rune, pattern []r
 					eidx = lenRunes - (index - lenPattern + 1)
 				}
 				return Result{int32(sidx), int32(eidx),
-					evaluateBonus(caseSensitive, runes, pattern, sidx, eidx)}
+					evaluateBonus(caseSensitive, text, pattern, sidx, eidx)}
 			}
 		} else {
 			index -= pidx
@@ -240,13 +247,13 @@ func ExactMatchNaive(caseSensitive bool, forward bool, runes []rune, pattern []r
 }
 
 // PrefixMatch performs prefix-match
-func PrefixMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune) Result {
-	if len(runes) < len(pattern) {
+func PrefixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
+	if text.Length() < len(pattern) {
 		return Result{-1, -1, 0}
 	}
 
 	for index, r := range pattern {
-		char := runes[index]
+		char := text.Get(index)
 		if !caseSensitive {
 			char = unicode.ToLower(char)
 		}
@@ -256,20 +263,19 @@ func PrefixMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune)
 	}
 	lenPattern := len(pattern)
 	return Result{0, int32(lenPattern),
-		evaluateBonus(caseSensitive, runes, pattern, 0, lenPattern)}
+		evaluateBonus(caseSensitive, text, pattern, 0, lenPattern)}
 }
 
 // SuffixMatch performs suffix-match
-func SuffixMatch(caseSensitive bool, forward bool, input []rune, pattern []rune) Result {
-	runes := util.TrimRight(input)
-	trimmedLen := len(runes)
+func SuffixMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
+	trimmedLen := text.Length() - text.TrailingWhitespaces()
 	diff := trimmedLen - len(pattern)
 	if diff < 0 {
 		return Result{-1, -1, 0}
 	}
 
 	for index, r := range pattern {
-		char := runes[index+diff]
+		char := text.Get(index + diff)
 		if !caseSensitive {
 			char = unicode.ToLower(char)
 		}
@@ -281,16 +287,16 @@ func SuffixMatch(caseSensitive bool, forward bool, input []rune, pattern []rune)
 	sidx := trimmedLen - lenPattern
 	eidx := trimmedLen
 	return Result{int32(sidx), int32(eidx),
-		evaluateBonus(caseSensitive, runes, pattern, sidx, eidx)}
+		evaluateBonus(caseSensitive, text, pattern, sidx, eidx)}
 }
 
 // EqualMatch performs equal-match
-func EqualMatch(caseSensitive bool, forward bool, runes []rune, pattern []rune) Result {
+func EqualMatch(caseSensitive bool, forward bool, text util.Chars, pattern []rune) Result {
 	// Note: EqualMatch always return a zero bonus.
-	if len(runes) != len(pattern) {
+	if text.Length() != len(pattern) {
 		return Result{-1, -1, 0}
 	}
-	runesStr := string(runes)
+	runesStr := text.ToString()
 	if !caseSensitive {
 		runesStr = strings.ToLower(runesStr)
 	}

src/algo/algo_test.go

@@ -3,13 +3,15 @@ package algo
 import (
 	"strings"
 	"testing"
+
+	"github.com/junegunn/fzf/src/util"
 )
 
-func assertMatch(t *testing.T, fun func(bool, bool, []rune, []rune) Result, caseSensitive, forward bool, input, pattern string, sidx int32, eidx int32, bonus int32) {
+func assertMatch(t *testing.T, fun func(bool, bool, util.Chars, []rune) Result, caseSensitive, forward bool, input, pattern string, sidx int32, eidx int32, bonus int32) {
 	if !caseSensitive {
 		pattern = strings.ToLower(pattern)
 	}
-	res := fun(caseSensitive, forward, []rune(input), []rune(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)
 	}

src/ansi.go

@@ -36,7 +36,7 @@ func init() {
 	ansiRegex = regexp.MustCompile("\x1b\\[[0-9;]*[mK]")
 }
 
-func extractColor(str string, state *ansiState) (string, []ansiOffset, *ansiState) {
+func extractColor(str string, state *ansiState, proc func(string, *ansiState) bool) (string, []ansiOffset, *ansiState) {
 	var offsets []ansiOffset
 	var output bytes.Buffer
 
@@ -46,7 +46,11 @@ func extractColor(str string, state *ansiState) (string, []ansiOffset, *ansiStat
 
 	idx := 0
 	for _, offset := range ansiRegex.FindAllStringIndex(str, -1) {
-		output.WriteString(str[idx:offset[0]])
+		prev := str[idx:offset[0]]
+		output.WriteString(prev)
+		if proc != nil && !proc(prev, state) {
+			return "", nil, nil
+		}
 		newState := interpretCode(str[offset[0]:offset[1]], state)
 
 		if !newState.equals(state) {
@@ -77,6 +81,9 @@ func extractColor(str string, state *ansiState) (string, []ansiOffset, *ansiStat
 			(&offsets[len(offsets)-1]).offset[1] = int32(utf8.RuneCount(output.Bytes()))
 		}
 	}
+	if proc != nil {
+		proc(rest, state)
+	}
 	return output.String(), offsets, state
 }
 

src/ansi_test.go

@@ -17,7 +17,7 @@ func TestExtractColor(t *testing.T) {
 	var state *ansiState
 	clean := "\x1b[0m"
 	check := func(assertion func(ansiOffsets []ansiOffset, state *ansiState)) {
-		output, ansiOffsets, newState := extractColor(src, state)
+		output, ansiOffsets, newState := extractColor(src, state, nil)
 		state = newState
 		if output != "hello world" {
 			t.Errorf("Invalid output: {}", output)

src/chunklist_test.go

@@ -3,6 +3,8 @@ package fzf
 import (
 	"fmt"
 	"testing"
+
+	"github.com/junegunn/fzf/src/util"
 )
 
 func TestChunkList(t *testing.T) {
@@ -10,7 +12,7 @@ func TestChunkList(t *testing.T) {
 	sortCriteria = []criterion{byMatchLen, byLength}
 
 	cl := NewChunkList(func(s []byte, i int) *Item {
-		return &Item{text: []rune(string(s)), rank: buildEmptyRank(int32(i * 2))}
+		return &Item{text: util.ToChars(s), rank: buildEmptyRank(int32(i * 2))}
 	})
 
 	// Snapshot
@@ -42,8 +44,8 @@ func TestChunkList(t *testing.T) {
 	last := func(arr [5]int32) int32 {
 		return arr[len(arr)-1]
 	}
-	if string((*chunk1)[0].text) != "hello" || last((*chunk1)[0].rank) != 0 ||
-		string((*chunk1)[1].text) != "world" || last((*chunk1)[1].rank) != 2 {
+	if (*chunk1)[0].text.ToString() != "hello" || last((*chunk1)[0].rank) != 0 ||
+		(*chunk1)[1].text.ToString() != "world" || last((*chunk1)[1].rank) != 2 {
 		t.Error("Invalid data")
 	}
 	if chunk1.IsFull() {

src/constants.go

@@ -8,7 +8,7 @@ import (
 
 const (
 	// Current version
-	version = "0.12.1"
+	version = "0.13.4"
 
 	// Core
 	coordinatorDelayMax  time.Duration = 100 * time.Millisecond
@@ -36,6 +36,9 @@ const (
 
 	// History
 	defaultHistoryMax int = 1000
+
+	// Jump labels
+	defaultJumpLabels string = "asdfghjklqwertyuiopzxcvbnm1234567890ASDFGHJKLQWERTYUIOPZXCVBNM`~;:,<.>/?'\"!@#$%^&*()[{]}-_=+"
 )
 
 // fzf events

src/core.go

@@ -63,29 +63,29 @@ func Run(opts *Options) {
 	eventBox := util.NewEventBox()
 
 	// ANSI code processor
-	ansiProcessor := func(data []byte) ([]rune, []ansiOffset) {
-		return util.BytesToRunes(data), nil
+	ansiProcessor := func(data []byte) (util.Chars, []ansiOffset) {
+		return util.ToChars(data), nil
 	}
-	ansiProcessorRunes := func(data []rune) ([]rune, []ansiOffset) {
-		return data, nil
+	ansiProcessorRunes := func(data []rune) (util.Chars, []ansiOffset) {
+		return util.RunesToChars(data), nil
 	}
 	if opts.Ansi {
 		if opts.Theme != nil {
 			var state *ansiState
-			ansiProcessor = func(data []byte) ([]rune, []ansiOffset) {
-				trimmed, offsets, newState := extractColor(string(data), state)
+			ansiProcessor = func(data []byte) (util.Chars, []ansiOffset) {
+				trimmed, offsets, newState := extractColor(string(data), state, nil)
 				state = newState
-				return []rune(trimmed), offsets
+				return util.RunesToChars([]rune(trimmed)), offsets
 			}
 		} else {
 			// When color is disabled but ansi option is given,
 			// we simply strip out ANSI codes from the input
-			ansiProcessor = func(data []byte) ([]rune, []ansiOffset) {
-				trimmed, _, _ := extractColor(string(data), nil)
-				return []rune(trimmed), nil
+			ansiProcessor = func(data []byte) (util.Chars, []ansiOffset) {
+				trimmed, _, _ := extractColor(string(data), nil, nil)
+				return util.RunesToChars([]rune(trimmed)), nil
 			}
 		}
-		ansiProcessorRunes = func(data []rune) ([]rune, []ansiOffset) {
+		ansiProcessorRunes = func(data []rune) (util.Chars, []ansiOffset) {
 			return ansiProcessor([]byte(string(data)))
 		}
 	}
@@ -100,29 +100,30 @@ func Run(opts *Options) {
 				eventBox.Set(EvtHeader, header)
 				return nil
 			}
-			runes, colors := ansiProcessor(data)
+			chars, colors := ansiProcessor(data)
 			return &Item{
-				text:   runes,
+				text:   chars,
 				colors: colors,
 				rank:   buildEmptyRank(int32(index))}
 		})
 	} else {
 		chunkList = NewChunkList(func(data []byte, index int) *Item {
-			runes := util.BytesToRunes(data)
-			tokens := Tokenize(runes, opts.Delimiter)
+			chars := util.ToChars(data)
+			tokens := Tokenize(chars, opts.Delimiter)
 			trans := Transform(tokens, opts.WithNth)
 			if len(header) < opts.HeaderLines {
 				header = append(header, string(joinTokens(trans)))
 				eventBox.Set(EvtHeader, header)
 				return nil
 			}
+			textRunes := joinTokens(trans)
 			item := Item{
-				text:     joinTokens(trans),
-				origText: &runes,
+				text:     util.RunesToChars(textRunes),
+				origText: &data,
 				colors:   nil,
 				rank:     buildEmptyRank(int32(index))}
 
-			trimmed, colors := ansiProcessorRunes(item.text)
+			trimmed, colors := ansiProcessorRunes(textRunes)
 			item.text = trimmed
 			item.colors = colors
 			return &item
@@ -170,7 +171,7 @@ func Run(opts *Options) {
 				func(runes []byte) bool {
 					item := chunkList.trans(runes, 0)
 					if item != nil && pattern.MatchItem(item) {
-						fmt.Println(string(item.text))
+						fmt.Println(item.text.ToString())
 						found = true
 					}
 					return false

src/curses/curses.go

@@ -80,7 +80,16 @@ const (
 	F2
 	F3
 	F4
+	F5
+	F6
+	F7
+	F8
+	F9
+	F10
 
+	AltEnter
+	AltSpace
+	AltSlash
 	AltBS
 	AltA
 	AltB
@@ -104,11 +113,14 @@ const (
 	ColCursor
 	ColSelected
 	ColHeader
-	ColUser
+	ColBorder
+	ColUser // Should be the last entry
 )
 
 const (
 	doubleClickDuration = 500 * time.Millisecond
+	colDefault          = -1
+	colUndefined        = -2
 )
 
 type ColorTheme struct {
@@ -125,6 +137,7 @@ type ColorTheme struct {
 	Cursor       int16
 	Selected     int16
 	Header       int16
+	Border       int16
 }
 
 type Event struct {
@@ -159,6 +172,49 @@ var (
 	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{}
@@ -176,7 +232,8 @@ func init() {
 		Info:         C.COLOR_WHITE,
 		Cursor:       C.COLOR_RED,
 		Selected:     C.COLOR_MAGENTA,
-		Header:       C.COLOR_CYAN}
+		Header:       C.COLOR_CYAN,
+		Border:       C.COLOR_BLACK}
 	Dark256 = &ColorTheme{
 		UseDefault:   true,
 		Fg:           15,
@@ -190,7 +247,8 @@ func init() {
 		Info:         144,
 		Cursor:       161,
 		Selected:     168,
-		Header:       109}
+		Header:       109,
+		Border:       59}
 	Light256 = &ColorTheme{
 		UseDefault:   true,
 		Fg:           15,
@@ -204,7 +262,8 @@ func init() {
 		Info:         101,
 		Cursor:       161,
 		Selected:     168,
-		Header:       31}
+		Header:       31,
+		Border:       145}
 }
 
 func attrColored(pair int, bold bool) C.int {
@@ -280,44 +339,59 @@ func Init(theme *ColorTheme, black bool, mouse bool) {
 
 	if theme != nil {
 		C.start_color()
-		initPairs(theme, black)
+		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 initPairs(theme *ColorTheme, black bool) {
-	fg := C.short(theme.Fg)
-	bg := C.short(theme.Bg)
+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 = -1
-		bg = -1
+		fg = colDefault
+		bg = colDefault
 		C.use_default_colors()
 	}
 	if theme.UseDefault {
-		FG = -1
-		BG = -1
+		FG = colDefault
+		BG = colDefault
 	} else {
 		FG = int(fg)
 		BG = int(bg)
-		C.assume_default_colors(C.int(theme.Fg), C.int(bg))
+		C.assume_default_colors(C.int(override(baseTheme.Fg, theme.Fg)), C.int(bg))
 	}
 
-	CurrentFG = int(theme.Current)
-	DarkBG = int(theme.DarkBg)
-	darkBG := C.short(DarkBG)
-	C.init_pair(ColPrompt, C.short(theme.Prompt), bg)
-	C.init_pair(ColMatch, C.short(theme.Match), bg)
-	C.init_pair(ColCurrent, C.short(theme.Current), darkBG)
-	C.init_pair(ColCurrentMatch, C.short(theme.CurrentMatch), darkBG)
-	C.init_pair(ColSpinner, C.short(theme.Spinner), bg)
-	C.init_pair(ColInfo, C.short(theme.Info), bg)
-	C.init_pair(ColCursor, C.short(theme.Cursor), darkBG)
-	C.init_pair(ColSelected, C.short(theme.Selected), darkBG)
-	C.init_pair(ColHeader, C.short(theme.Header), 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() {
@@ -373,7 +447,9 @@ func mouseSequence(sz *int) Event {
 		97, 101, 105, 113: // scroll-down / shift / cmd / ctrl
 		mod := _buf[3] >= 100
 		s := 1 - int(_buf[3]%2)*2
-		return Event{Mouse, 0, &MouseEvent{0, 0, s, false, false, mod}}
+		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}
 }
@@ -384,6 +460,12 @@ func escSequence(sz *int) Event {
 	}
 	*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:
@@ -429,6 +511,20 @@ func escSequence(sz *int) Event {
 			*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}
@@ -442,6 +538,21 @@ func escSequence(sz *int) Event {
 				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}
@@ -511,17 +622,25 @@ func GetChar() Event {
 	return Event{Rune, r, nil}
 }
 
-func Move(y int, x int) {
-	C.move(C.int(y), C.int(x))
+func (w *Window) Close() {
+	C.delwin(w.win)
 }
 
-func MoveAndClear(y int, x int) {
-	Move(y, x)
-	C.clrtoeol()
+func (w *Window) Enclose(y int, x int) bool {
+	return bool(C.wenclose(w.win, C.int(y), C.int(x)))
 }
 
-func Print(text string) {
-	C.addstr(C.CString(strings.Map(func(r rune) rune {
+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
 		}
@@ -529,11 +648,11 @@ func Print(text string) {
 	}, text)))
 }
 
-func CPrint(pair int, bold bool, text string) {
+func (w *Window) CPrint(pair int, bold bool, text string) {
 	attr := _color(pair, bold)
-	C.attron(attr)
-	Print(text)
-	C.attroff(attr)
+	C.wattron(w.win, attr)
+	w.Print(text)
+	C.wattroff(w.win, attr)
 }
 
 func Clear() {
@@ -548,6 +667,30 @@ 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 {

src/item.go

@@ -4,6 +4,7 @@ import (
 	"math"
 
 	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
 )
 
 // Offset holds three 32-bit integers denoting the offsets of a matched substring
@@ -17,8 +18,8 @@ type colorOffset struct {
 
 // Item represents each input line
 type Item struct {
-	text        []rune
-	origText    *[]rune
+	text        util.Chars
+	origText    *[]byte
 	transformed []Token
 	offsets     []Offset
 	colors      []ansiOffset
@@ -43,6 +44,7 @@ func buildEmptyRank(index int32) [5]int32 {
 	return [5]int32{0, 0, 0, 0, index}
 }
 
+// Index returns ordinal index of the Item
 func (item *Item) Index() int32 {
 	return item.rank[4]
 }
@@ -91,12 +93,14 @@ func (item *Item) Rank(cache bool) [5]int32 {
 				// If offsets is empty, lenSum will be 0, but we don't care
 				val = int32(lenSum)
 			} else {
-				val = int32(len(item.text))
+				val = int32(item.text.Length())
 			}
 		case byBegin:
 			// We can't just look at item.offsets[0][0] because it can be an inverse term
 			whitePrefixLen := 0
-			for idx, r := range item.text {
+			numChars := item.text.Length()
+			for idx := 0; idx < numChars; idx++ {
+				r := item.text.Get(idx)
 				whitePrefixLen = idx
 				if idx == minBegin || r != ' ' && r != '\t' {
 					break
@@ -105,7 +109,7 @@ func (item *Item) Rank(cache bool) [5]int32 {
 			val = int32(minBegin - whitePrefixLen)
 		case byEnd:
 			if prevEnd > 0 {
-				val = int32(1 + len(item.text) - prevEnd)
+				val = int32(1 + item.text.Length() - prevEnd)
 			} else {
 				// Empty offsets due to inverse terms.
 				val = 1
@@ -128,13 +132,13 @@ func (item *Item) AsString(stripAnsi bool) string {
 func (item *Item) StringPtr(stripAnsi bool) *string {
 	if item.origText != nil {
 		if stripAnsi {
-			trimmed, _, _ := extractColor(string(*item.origText), nil)
+			trimmed, _, _ := extractColor(string(*item.origText), nil, nil)
 			return &trimmed
 		}
 		orig := string(*item.origText)
 		return &orig
 	}
-	str := string(item.text)
+	str := item.text.ToString()
 	return &str
 }
 

src/item_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
 )
 
 func TestOffsetSort(t *testing.T) {
@@ -44,13 +45,13 @@ func TestItemRank(t *testing.T) {
 	sortCriteria = []criterion{byMatchLen, byLength}
 
 	strs := [][]rune{[]rune("foo"), []rune("foobar"), []rune("bar"), []rune("baz")}
-	item1 := Item{text: strs[0], offsets: []Offset{}, rank: [5]int32{0, 0, 0, 0, 1}}
+	item1 := Item{text: util.RunesToChars(strs[0]), offsets: []Offset{}, rank: [5]int32{0, 0, 0, 0, 1}}
 	rank1 := item1.Rank(true)
 	if rank1[0] != math.MaxInt32 || rank1[1] != 3 || rank1[4] != 1 {
 		t.Error(item1.Rank(true))
 	}
 	// Only differ in index
-	item2 := Item{text: strs[0], offsets: []Offset{}}
+	item2 := Item{text: util.RunesToChars(strs[0]), offsets: []Offset{}}
 
 	items := []*Item{&item1, &item2}
 	sort.Sort(ByRelevance(items))
@@ -66,10 +67,10 @@ func TestItemRank(t *testing.T) {
 	}
 
 	// Sort by relevance
-	item3 := Item{text: strs[1], rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
-	item4 := Item{text: strs[1], rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
-	item5 := Item{text: strs[2], rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
-	item6 := Item{text: strs[2], rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
+	item3 := Item{text: util.RunesToChars(strs[1]), rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
+	item4 := Item{text: util.RunesToChars(strs[1]), rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
+	item5 := Item{text: util.RunesToChars(strs[2]), rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 3}, Offset{5, 7}}}
+	item6 := Item{text: util.RunesToChars(strs[2]), rank: [5]int32{0, 0, 0, 0, 2}, offsets: []Offset{Offset{1, 2}, Offset{6, 7}}}
 	items = []*Item{&item1, &item2, &item3, &item4, &item5, &item6}
 	sort.Sort(ByRelevance(items))
 	if items[0] != &item6 || items[1] != &item4 ||

src/matcher.go

@@ -200,7 +200,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 	}
 
 	partialResults := make([][]*Item, numSlices)
-	for _, _ = range slices {
+	for _ = range slices {
 		partialResult := <-resultChan
 		partialResults[partialResult.index] = partialResult.matches
 	}

src/merger.go

@@ -2,7 +2,7 @@ package fzf
 
 import "fmt"
 
-// Merger with no data
+// EmptyMerger is a Merger with no data
 var EmptyMerger = NewMerger([][]*Item{}, false, false)
 
 // Merger holds a set of locally sorted lists of items and provides the view of

src/merger_test.go

@@ -5,6 +5,8 @@ import (
 	"math/rand"
 	"sort"
 	"testing"
+
+	"github.com/junegunn/fzf/src/util"
 )
 
 func assert(t *testing.T, cond bool, msg ...string) {
@@ -22,7 +24,7 @@ func randItem() *Item {
 		offsets[idx] = Offset{sidx, eidx}
 	}
 	return &Item{
-		text:    []rune(str),
+		text:    util.RunesToChars([]rune(str)),
 		rank:    buildEmptyRank(rand.Int31()),
 		offsets: offsets}
 }

src/options.go

@@ -1,6 +1,7 @@
 package fzf
 
 import (
+	"fmt"
 	"os"
 	"regexp"
 	"strconv"
@@ -23,35 +24,47 @@ const usage = `usage: fzf [options]
     -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]).
-    --with-nth=N[,..]     Transform item using index expressions within finder
-    -d, --delimiter=STR   Field delimiter regex for --nth (default: AWK-style)
+    --with-nth=N[,..]     Transform the presentation of each line using
+                          field index expressions
+    -d, --delimiter=STR   Field delimiter regex (default: AWK-style)
     +s, --no-sort         Do not sort the result
     --tac                 Reverse the order of the input
     --tiebreak=CRI[,..]   Comma-separated list of sort criteria to apply
-                          when the scores are tied;
-                          [length|begin|end|index] (default: length)
+                          when the scores are tied [length|begin|end|index]
+                          (default: length)
 
   Interface
     -m, --multi           Enable multi-select with tab/shift-tab
-    --ansi                Enable processing of ANSI color codes
     --no-mouse            Disable mouse
-    --color=COLSPEC       Base scheme (dark|light|16|bw) and/or custom colors
-    --black               Use black background
-    --reverse             Reverse orientation
-    --margin=MARGIN       Screen margin (TRBL / TB,RL / T,RL,B / T,R,B,L)
-    --tabstop=SPACES      Number of spaces for a tab character (default: 8)
+    --bind=KEYBINDS       Custom key bindings. Refer to the man page.
     --cycle               Enable cyclic scroll
     --no-hscroll          Disable horizontal scroll
     --hscroll-off=COL     Number of screen columns to keep to the right of the
                           highlighted substring (default: 10)
+    --jump-labels=CHARS   Label characters for jump and jump-accept
+
+  Layout
+    --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
     --prompt=STR          Input prompt (default: '> ')
-    --bind=KEYBINDS       Custom key bindings. Refer to the man page.
-    --history=FILE        History file
-    --history-size=N      Maximum number of history entries (default: 1000)
     --header=STR          String to print as header
     --header-lines=N      The first N lines of the input are treated as header
 
+  Display
+    --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
+
+  History
+    --history=FILE        History file
+    --history-size=N      Maximum number of history entries (default: 1000)
+
+  Preview
+    --preview=COMMAND     Command to preview highlighted line ({})
+    --preview-window=OPT  Preview window layout (default: right:50%)
+                          [up|down|left|right][:SIZE[%]][:hidden]
+
   Scripting
     -q, --query=STR       Start the finder with the given query
     -1, --select-1        Automatically select the only match
@@ -87,8 +100,29 @@ const (
 	byEnd
 )
 
-func defaultMargin() [4]string {
-	return [4]string{"0", "0", "0", "0"}
+type sizeSpec struct {
+	size    float64
+	percent bool
+}
+
+func defaultMargin() [4]sizeSpec {
+	return [4]sizeSpec{}
+}
+
+type windowPosition int
+
+const (
+	posUp windowPosition = iota
+	posDown
+	posLeft
+	posRight
+)
+
+type previewOpts struct {
+	command  string
+	position windowPosition
+	size     sizeSpec
+	hidden   bool
 }
 
 // Options stores the values of command-line options
@@ -112,6 +146,7 @@ type Options struct {
 	Hscroll     bool
 	HscrollOff  int
 	InlineInfo  bool
+	JumpLabels  string
 	Prompt      string
 	Query       string
 	Select1     bool
@@ -121,24 +156,18 @@ type Options struct {
 	Expect      map[int]string
 	Keymap      map[int]actionType
 	Execmap     map[int]string
+	Preview     previewOpts
 	PrintQuery  bool
 	ReadZero    bool
 	Sync        bool
 	History     *History
 	Header      []string
 	HeaderLines int
-	Margin      [4]string
+	Margin      [4]sizeSpec
 	Tabstop     int
 	Version     bool
 }
 
-func defaultTheme() *curses.ColorTheme {
-	if strings.Contains(os.Getenv("TERM"), "256") {
-		return curses.Dark256
-	}
-	return curses.Default16
-}
-
 func defaultOptions() *Options {
 	return &Options{
 		Fuzzy:       true,
@@ -153,13 +182,14 @@ func defaultOptions() *Options {
 		Multi:       false,
 		Ansi:        false,
 		Mouse:       true,
-		Theme:       defaultTheme(),
+		Theme:       curses.EmptyTheme(),
 		Black:       false,
 		Reverse:     false,
 		Cycle:       false,
 		Hscroll:     true,
 		HscrollOff:  10,
 		InlineInfo:  false,
+		JumpLabels:  defaultJumpLabels,
 		Prompt:      "> ",
 		Query:       "",
 		Select1:     false,
@@ -169,6 +199,7 @@ 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},
 		PrintQuery:  false,
 		ReadZero:    false,
 		Sync:        false,
@@ -322,6 +353,12 @@ func parseKeyChords(str string, message string) map[int]string {
 			chord = curses.AltZ + int(' ')
 		case "bspace", "bs":
 			chord = curses.BSpace
+		case "alt-enter", "alt-return":
+			chord = curses.AltEnter
+		case "alt-space":
+			chord = curses.AltSpace
+		case "alt-/":
+			chord = curses.AltSlash
 		case "alt-bs", "alt-bspace":
 			chord = curses.AltBS
 		case "tab":
@@ -346,12 +383,14 @@ func parseKeyChords(str string, message string) map[int]string {
 			chord = curses.SRight
 		case "double-click":
 			chord = curses.DoubleClick
+		case "f10":
+			chord = curses.F10
 		default:
 			if len(key) == 6 && strings.HasPrefix(lkey, "ctrl-") && isAlphabet(lkey[5]) {
 				chord = curses.CtrlA + int(lkey[5]) - 'a'
 			} else if len(key) == 5 && strings.HasPrefix(lkey, "alt-") && isAlphabet(lkey[4]) {
 				chord = curses.AltA + int(lkey[4]) - 'a'
-			} else if len(key) == 2 && strings.HasPrefix(lkey, "f") && key[1] >= '1' && key[1] <= '4' {
+			} else if len(key) == 2 && strings.HasPrefix(lkey, "f") && key[1] >= '1' && key[1] <= '9' {
 				chord = curses.F1 + int(key[1]) - '1'
 			} else if utf8.RuneCountInString(key) == 1 {
 				chord = curses.AltZ + int([]rune(key)[0])
@@ -454,6 +493,8 @@ func parseTheme(defaultTheme *curses.ColorTheme, str string) *curses.ColorTheme
 				theme.Match = ansi
 			case "hl+":
 				theme.CurrentMatch = ansi
+			case "border":
+				theme.Border = ansi
 			case "prompt":
 				theme.Prompt = ansi
 			case "spinner":
@@ -534,6 +575,8 @@ func parseKeymap(keymap map[int]actionType, execmap map[int]string, str string)
 			keymap[key] = actAbort
 		case "accept":
 			keymap[key] = actAccept
+		case "print-query":
+			keymap[key] = actPrintQuery
 		case "backward-char":
 			keymap[key] = actBackwardChar
 		case "backward-delete-char":
@@ -554,6 +597,10 @@ func parseKeymap(keymap map[int]actionType, execmap map[int]string, str string)
 			keymap[key] = actForwardChar
 		case "forward-word":
 			keymap[key] = actForwardWord
+		case "jump":
+			keymap[key] = actJump
+		case "jump-accept":
+			keymap[key] = actJumpAccept
 		case "kill-line":
 			keymap[key] = actKillLine
 		case "kill-word":
@@ -594,6 +641,8 @@ func parseKeymap(keymap map[int]actionType, execmap map[int]string, str string)
 			keymap[key] = actPreviousHistory
 		case "next-history":
 			keymap[key] = actNextHistory
+		case "toggle-preview":
+			keymap[key] = actTogglePreview
 		case "toggle-sort":
 			keymap[key] = actToggleSort
 		default:
@@ -649,40 +698,87 @@ func strLines(str string) []string {
 	return strings.Split(strings.TrimSuffix(str, "\n"), "\n")
 }
 
-func parseMargin(margin string) [4]string {
-	margins := strings.Split(margin, ",")
-	checked := func(str string) string {
-		if strings.HasSuffix(str, "%") {
-			val := atof(str[:len(str)-1])
-			if val < 0 {
-				errorExit("margin must be non-negative")
-			}
-			if val > 100 {
-				errorExit("margin too large")
-			}
-		} else {
-			val := atoi(str)
-			if val < 0 {
-				errorExit("margin must be non-negative")
-			}
+func parseSize(str string, maxPercent float64, label string) sizeSpec {
+	var val float64
+	percent := strings.HasSuffix(str, "%")
+	if percent {
+		val = atof(str[:len(str)-1])
+		if val < 0 {
+			errorExit(label + " must be non-negative")
 		}
-		return str
+		if val > maxPercent {
+			errorExit(fmt.Sprintf("%s too large (max: %d%%)", label, int(maxPercent)))
+		}
+	} else {
+		if strings.Contains(str, ".") {
+			errorExit(label + " (without %) must be a non-negative integer")
+		}
+
+		val = float64(atoi(str))
+		if val < 0 {
+			errorExit(label + " must be non-negative")
+		}
+	}
+	return sizeSpec{val, percent}
+}
+
+func parsePreviewWindow(opts *previewOpts, input string) {
+	layout := input
+	opts.hidden = false
+	if strings.HasSuffix(layout, ":hidden") {
+		opts.hidden = true
+		layout = strings.TrimSuffix(layout, ":hidden")
+	}
+
+	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}
+	}
+	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)
+	}
+}
+
+func parseMargin(margin string) [4]sizeSpec {
+	margins := strings.Split(margin, ",")
+	checked := func(str string) sizeSpec {
+		return parseSize(str, 49, "margin")
 	}
 	switch len(margins) {
 	case 1:
 		m := checked(margins[0])
-		return [4]string{m, m, m, m}
+		return [4]sizeSpec{m, m, m, m}
 	case 2:
 		tb := checked(margins[0])
 		rl := checked(margins[1])
-		return [4]string{tb, rl, tb, rl}
+		return [4]sizeSpec{tb, rl, tb, rl}
 	case 3:
 		t := checked(margins[0])
 		rl := checked(margins[1])
 		b := checked(margins[2])
-		return [4]string{t, rl, b, rl}
+		return [4]sizeSpec{t, rl, b, rl}
 	case 4:
-		return [4]string{
+		return [4]sizeSpec{
 			checked(margins[0]), checked(margins[1]),
 			checked(margins[2]), checked(margins[3])}
 	default:
@@ -714,6 +810,7 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.History.maxSize = historyMax
 		}
 	}
+	validateJumpLabels := false
 	for i := 0; i < len(allArgs); i++ {
 		arg := allArgs[i]
 		switch arg {
@@ -745,7 +842,7 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--color":
 			spec := optionalNextString(allArgs, &i)
 			if len(spec) == 0 {
-				opts.Theme = defaultTheme()
+				opts.Theme = curses.EmptyTheme()
 			} else {
 				opts.Theme = parseTheme(opts.Theme, spec)
 			}
@@ -805,6 +902,9 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.InlineInfo = true
 		case "--no-inline-info":
 			opts.InlineInfo = false
+		case "--jump-labels":
+			opts.JumpLabels = nextString(allArgs, &i, "label characters required")
+			validateJumpLabels = true
 		case "-1", "--select-1":
 			opts.Select1 = true
 		case "+1", "--no-select-1":
@@ -844,6 +944,13 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--header-lines":
 			opts.HeaderLines = atoi(
 				nextString(allArgs, &i, "number of header lines required"))
+		case "--preview":
+			opts.Preview.command = nextString(allArgs, &i, "preview command required")
+		case "--no-preview":
+			opts.Preview.command = ""
+		case "--preview-window":
+			parsePreviewWindow(&opts.Preview,
+				nextString(allArgs, &i, "preview window layout required: [up|down|left|right][:SIZE[%]]"))
 		case "--no-margin":
 			opts.Margin = defaultMargin()
 		case "--margin":
@@ -886,12 +993,18 @@ func parseOptions(opts *Options, allArgs []string) {
 				opts.Header = strLines(value)
 			} else if match, value := optString(arg, "--header-lines="); match {
 				opts.HeaderLines = atoi(value)
+			} else if match, value := optString(arg, "--preview="); match {
+				opts.Preview.command = value
+			} else if match, value := optString(arg, "--preview-window="); match {
+				parsePreviewWindow(&opts.Preview, value)
 			} else if match, value := optString(arg, "--margin="); match {
 				opts.Margin = parseMargin(value)
 			} else if match, value := optString(arg, "--tabstop="); match {
 				opts.Tabstop = atoi(value)
 			} else if match, value := optString(arg, "--hscroll-off="); match {
 				opts.HscrollOff = atoi(value)
+			} else if match, value := optString(arg, "--jump-labels="); match {
+				opts.JumpLabels = value
 			} else {
 				errorExit("unknown option: " + arg)
 			}
@@ -909,6 +1022,18 @@ func parseOptions(opts *Options, allArgs []string) {
 	if opts.Tabstop < 1 {
 		errorExit("tab stop must be a positive integer")
 	}
+
+	if len(opts.JumpLabels) == 0 {
+		errorExit("empty jump labels")
+	}
+
+	if validateJumpLabels {
+		for _, r := range opts.JumpLabels {
+			if r < 32 || r > 126 {
+				errorExit("non-ascii jump labels are not allowed")
+			}
+		}
+	}
 }
 
 func postProcessOptions(opts *Options) {

src/options_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/junegunn/fzf/src/curses"
+	"github.com/junegunn/fzf/src/util"
 )
 
 func TestDelimiterRegex(t *testing.T) {
@@ -42,24 +43,24 @@ func TestDelimiterRegex(t *testing.T) {
 
 func TestDelimiterRegexString(t *testing.T) {
 	delim := delimiterRegexp("*")
-	tokens := Tokenize([]rune("-*--*---**---"), delim)
+	tokens := Tokenize(util.RunesToChars([]rune("-*--*---**---")), delim)
 	if delim.regex != nil ||
-		string(tokens[0].text) != "-*" ||
-		string(tokens[1].text) != "--*" ||
-		string(tokens[2].text) != "---*" ||
-		string(tokens[3].text) != "*" ||
-		string(tokens[4].text) != "---" {
+		tokens[0].text.ToString() != "-*" ||
+		tokens[1].text.ToString() != "--*" ||
+		tokens[2].text.ToString() != "---*" ||
+		tokens[3].text.ToString() != "*" ||
+		tokens[4].text.ToString() != "---" {
 		t.Errorf("%s %s %d", delim, tokens, len(tokens))
 	}
 }
 
 func TestDelimiterRegexRegex(t *testing.T) {
 	delim := delimiterRegexp("--\\*")
-	tokens := Tokenize([]rune("-*--*---**---"), delim)
+	tokens := Tokenize(util.RunesToChars([]rune("-*--*---**---")), delim)
 	if delim.str != nil ||
-		string(tokens[0].text) != "-*--*" ||
-		string(tokens[1].text) != "---*" ||
-		string(tokens[2].text) != "*---" {
+		tokens[0].text.ToString() != "-*--*" ||
+		tokens[1].text.ToString() != "---*" ||
+		tokens[2].text.ToString() != "*---" {
 		t.Errorf("%s %d", tokens, len(tokens))
 	}
 }
@@ -123,14 +124,14 @@ func TestIrrelevantNth(t *testing.T) {
 }
 
 func TestParseKeys(t *testing.T) {
-	pairs := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g", "")
+	pairs := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ALT-enter,alt-SPACE", "")
 	check := func(i int, s string) {
 		if pairs[i] != s {
 			t.Errorf("%s != %s", pairs[i], s)
 		}
 	}
-	if len(pairs) != 9 {
-		t.Error(9)
+	if len(pairs) != 11 {
+		t.Error(11)
 	}
 	check(curses.CtrlZ, "ctrl-z")
 	check(curses.AltZ, "alt-z")
@@ -141,6 +142,8 @@ func TestParseKeys(t *testing.T) {
 	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")
 
 	// Synonyms
 	pairs = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
@@ -350,14 +353,14 @@ func TestDefaultCtrlNP(t *testing.T) {
 	check([]string{hist, "--bind=ctrl-p:accept"}, curses.CtrlP, actAccept)
 }
 
-func TestToggle(t *testing.T) {
-	optsFor := func(words ...string) *Options {
-		opts := defaultOptions()
-		parseOptions(opts, words)
-		postProcessOptions(opts)
-		return opts
-	}
+func optsFor(words ...string) *Options {
+	opts := defaultOptions()
+	parseOptions(opts, words)
+	postProcessOptions(opts)
+	return opts
+}
 
+func TestToggle(t *testing.T) {
 	opts := optsFor()
 	if opts.ToggleSort {
 		t.Error()
@@ -373,3 +376,31 @@ func TestToggle(t *testing.T) {
 		t.Error()
 	}
 }
+
+func TestPreviewOpts(t *testing.T) {
+	opts := optsFor()
+	if !(opts.Preview.command == "" &&
+		opts.Preview.hidden == 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")
+	if !(opts.Preview.command == "cat {}" &&
+		opts.Preview.hidden == true &&
+		opts.Preview.position == posLeft &&
+		opts.Preview.size.percent == false &&
+		opts.Preview.size.size == 15+2) {
+		t.Error(opts.Preview)
+	}
+
+	opts = optsFor("--preview-window=left:15:hidden", "--preview-window=down")
+	if !(opts.Preview.command == "" &&
+		opts.Preview.hidden == false &&
+		opts.Preview.position == posDown &&
+		opts.Preview.size.percent == true &&
+		opts.Preview.size.size == 50) {
+		t.Error(opts.Preview)
+	}
+}

src/pattern.go

@@ -49,7 +49,7 @@ type Pattern struct {
 	cacheable     bool
 	delimiter     Delimiter
 	nth           []Range
-	procFun       map[termType]func(bool, bool, []rune, []rune) algo.Result
+	procFun       map[termType]func(bool, bool, util.Chars, []rune) algo.Result
 }
 
 var (
@@ -125,7 +125,7 @@ func BuildPattern(fuzzy bool, extended bool, caseMode Case, forward bool,
 		cacheable:     cacheable,
 		nth:           nth,
 		delimiter:     delimiter,
-		procFun:       make(map[termType]func(bool, bool, []rune, []rune) algo.Result)}
+		procFun:       make(map[termType]func(bool, bool, util.Chars, []rune) algo.Result)}
 
 	ptr.procFun[termFuzzy] = algo.FuzzyMatch
 	ptr.procFun[termEqual] = algo.EqualMatch
@@ -361,19 +361,19 @@ func (p *Pattern) prepareInput(item *Item) []Token {
 		tokens := Tokenize(item.text, p.delimiter)
 		ret = Transform(tokens, p.nth)
 	} else {
-		ret = []Token{Token{text: item.text, prefixLength: 0, trimLength: util.TrimLen(item.text)}}
+		ret = []Token{Token{text: item.text, prefixLength: 0, trimLength: item.text.TrimLength()}}
 	}
 	item.transformed = ret
 	return ret
 }
 
-func (p *Pattern) iter(pfun func(bool, bool, []rune, []rune) algo.Result,
+func (p *Pattern) iter(pfun func(bool, bool, util.Chars, []rune) algo.Result,
 	tokens []Token, caseSensitive bool, forward bool, pattern []rune) (Offset, int32) {
 	for _, part := range tokens {
 		prefixLength := int32(part.prefixLength)
 		if res := pfun(caseSensitive, forward, part.text, pattern); res.Start >= 0 {
-			var sidx int32 = res.Start + prefixLength
-			var eidx int32 = res.End + prefixLength
+			sidx := res.Start + prefixLength
+			eidx := res.End + prefixLength
 			return Offset{sidx, eidx, int32(part.trimLength)}, res.Bonus
 		}
 	}

src/pattern_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/junegunn/fzf/src/algo"
+	"github.com/junegunn/fzf/src/util"
 )
 
 func TestParseTermsExtended(t *testing.T) {
@@ -71,7 +72,7 @@ func TestExact(t *testing.T) {
 	pattern := BuildPattern(true, true, CaseSmart, true,
 		[]Range{}, Delimiter{}, []rune("'abc"))
 	res := algo.ExactMatchNaive(
-		pattern.caseSensitive, pattern.forward, []rune("aabbcc abc"), pattern.termSets[0][0].text)
+		pattern.caseSensitive, pattern.forward, util.RunesToChars([]rune("aabbcc abc")), pattern.termSets[0][0].text)
 	if res.Start != 7 || res.End != 10 {
 		t.Errorf("%s / %d / %d", pattern.termSets, res.Start, res.End)
 	}
@@ -84,7 +85,7 @@ func TestEqual(t *testing.T) {
 
 	match := func(str string, sidxExpected int32, eidxExpected int32) {
 		res := algo.EqualMatch(
-			pattern.caseSensitive, pattern.forward, []rune(str), pattern.termSets[0][0].text)
+			pattern.caseSensitive, pattern.forward, util.RunesToChars([]rune(str)), pattern.termSets[0][0].text)
 		if res.Start != sidxExpected || res.End != eidxExpected {
 			t.Errorf("%s / %d / %d", pattern.termSets, res.Start, res.End)
 		}
@@ -120,20 +121,20 @@ func TestCaseSensitivity(t *testing.T) {
 
 func TestOrigTextAndTransformed(t *testing.T) {
 	pattern := BuildPattern(true, true, CaseSmart, true, []Range{}, Delimiter{}, []rune("jg"))
-	tokens := Tokenize([]rune("junegunn"), Delimiter{})
+	tokens := Tokenize(util.RunesToChars([]rune("junegunn")), Delimiter{})
 	trans := Transform(tokens, []Range{Range{1, 1}})
 
-	origRunes := []rune("junegunn.choi")
+	origBytes := []byte("junegunn.choi")
 	for _, extended := range []bool{false, true} {
 		chunk := Chunk{
 			&Item{
-				text:        []rune("junegunn"),
-				origText:    &origRunes,
+				text:        util.RunesToChars([]rune("junegunn")),
+				origText:    &origBytes,
 				transformed: trans},
 		}
 		pattern.extended = extended
 		matches := pattern.matchChunk(&chunk)
-		if string(matches[0].text) != "junegunn" || string(*matches[0].origText) != "junegunn.choi" ||
+		if matches[0].text.ToString() != "junegunn" || string(*matches[0].origText) != "junegunn.choi" ||
 			matches[0].offsets[0][0] != 0 || matches[0].offsets[0][1] != 5 ||
 			!reflect.DeepEqual(matches[0].transformed, trans) {
 			t.Error("Invalid match result", matches)

src/terminal.go

@@ -7,7 +7,6 @@ import (
 	"os/signal"
 	"regexp"
 	"sort"
-	"strconv"
 	"strings"
 	"sync"
 	"syscall"
@@ -19,6 +18,14 @@ import (
 	"github.com/junegunn/go-runewidth"
 )
 
+type jumpMode int
+
+const (
+	jumpDisabled jumpMode = iota
+	jumpEnabled
+	jumpAcceptEnabled
+)
+
 // Terminal represents terminal input/output
 type Terminal struct {
 	initDelay  time.Duration
@@ -45,14 +52,22 @@ type Terminal struct {
 	header     []string
 	header0    []string
 	ansi       bool
-	margin     [4]string
-	marginInt  [4]int
+	margin     [4]sizeSpec
+	window     *C.Window
+	bwindow    *C.Window
+	pwindow    *C.Window
 	count      int
 	progress   int
 	reading    bool
+	jumping    jumpMode
+	jumpLabels string
 	merger     *Merger
 	selected   map[int32]selectedItem
 	reqBox     *util.EventBox
+	preview    previewOpts
+	previewing bool
+	previewTxt string
+	previewBox *util.EventBox
 	eventBox   *util.EventBox
 	mutex      sync.Mutex
 	initFunc   func()
@@ -67,6 +82,11 @@ type selectedItem struct {
 
 type byTimeOrder []selectedItem
 
+type previewRequest struct {
+	ok  bool
+	str string
+}
+
 func (a byTimeOrder) Len() int {
 	return len(a)
 }
@@ -88,9 +108,13 @@ const (
 	reqInfo
 	reqHeader
 	reqList
+	reqJump
 	reqRefresh
 	reqRedraw
 	reqClose
+	reqPrintQuery
+	reqPreviewEnqueue
+	reqPreviewDisplay
 	reqQuit
 )
 
@@ -132,7 +156,11 @@ const (
 	actUp
 	actPageUp
 	actPageDown
+	actJump
+	actJumpAccept
+	actPrintQuery
 	actToggleSort
+	actTogglePreview
 	actPreviousHistory
 	actNextHistory
 	actExecute
@@ -205,6 +233,10 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 	} else {
 		delay = initialDelay
 	}
+	var previewBox *util.EventBox
+	if len(opts.Preview.command) > 0 {
+		previewBox = util.NewEventBox()
+	}
 	return &Terminal{
 		initDelay:  delay,
 		inlineInfo: opts.InlineInfo,
@@ -227,15 +259,20 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		printQuery: opts.PrintQuery,
 		history:    opts.History,
 		margin:     opts.Margin,
-		marginInt:  [4]int{0, 0, 0, 0},
 		cycle:      opts.Cycle,
 		header:     header,
 		header0:    header,
 		ansi:       opts.Ansi,
 		reading:    true,
+		jumping:    jumpDisabled,
+		jumpLabels: opts.JumpLabels,
 		merger:     EmptyMerger,
 		selected:   make(map[int32]selectedItem),
 		reqBox:     util.NewEventBox(),
+		preview:    opts.Preview,
+		previewing: previewBox != nil && !opts.Preview.hidden,
+		previewTxt: "",
+		previewBox: previewBox,
 		eventBox:   eventBox,
 		mutex:      sync.Mutex{},
 		suppress:   true,
@@ -315,7 +352,7 @@ func (t *Terminal) output() bool {
 	if !found {
 		cnt := t.merger.Length()
 		if cnt > 0 && cnt > t.cy {
-			fmt.Println(t.merger.Get(t.cy).AsString(t.ansi))
+			fmt.Println(t.current())
 			found = true
 		}
 	} else {
@@ -355,56 +392,113 @@ func displayWidth(runes []rune) int {
 	return l
 }
 
-const minWidth = 16
-const minHeight = 4
+const (
+	minWidth  = 16
+	minHeight = 4
+)
 
-func (t *Terminal) calculateMargins() {
+func calculateSize(base int, size sizeSpec, margin int, minSize int) int {
+	max := base - margin
+	if size.percent {
+		return util.Constrain(int(float64(base)*0.01*size.size), minSize, max)
+	}
+	return util.Constrain(int(size.size), minSize, max)
+}
+
+func (t *Terminal) resizeWindows() {
 	screenWidth := C.MaxX()
 	screenHeight := C.MaxY()
-	for idx, str := range t.margin {
-		if str == "0" {
-			t.marginInt[idx] = 0
-		} else if strings.HasSuffix(str, "%") {
-			num, _ := strconv.ParseFloat(str[:len(str)-1], 64)
-			var val float64
+	marginInt := [4]int{}
+	for idx, sizeSpec := range t.margin {
+		if sizeSpec.percent {
+			var max float64
 			if idx%2 == 0 {
-				val = float64(screenHeight)
+				max = float64(screenHeight)
 			} else {
-				val = float64(screenWidth)
+				max = float64(screenWidth)
 			}
-			t.marginInt[idx] = int(val * num * 0.01)
+			marginInt[idx] = int(max * sizeSpec.size * 0.01)
 		} else {
-			num, _ := strconv.Atoi(str)
-			t.marginInt[idx] = num
+			marginInt[idx] = int(sizeSpec.size)
 		}
 	}
 	adjust := func(idx1 int, idx2 int, max int, min int) {
 		if max >= min {
-			margin := t.marginInt[idx1] + t.marginInt[idx2]
+			margin := marginInt[idx1] + marginInt[idx2]
 			if max-margin < min {
 				desired := max - min
-				t.marginInt[idx1] = desired * t.marginInt[idx1] / margin
-				t.marginInt[idx2] = desired * t.marginInt[idx2] / margin
+				marginInt[idx1] = desired * marginInt[idx1] / margin
+				marginInt[idx2] = desired * marginInt[idx2] / margin
 			}
 		}
 	}
-	adjust(1, 3, screenWidth, minWidth)
-	adjust(0, 2, screenHeight, minHeight)
+	minAreaWidth := minWidth
+	minAreaHeight := minHeight
+	if t.isPreviewEnabled() {
+		switch t.preview.position {
+		case posUp, posDown:
+			minAreaHeight *= 2
+		case posLeft, posRight:
+			minAreaWidth *= 2
+		}
+	}
+	adjust(1, 3, screenWidth, minAreaWidth)
+	adjust(0, 2, screenHeight, minAreaHeight)
+	if t.window != nil {
+		t.window.Close()
+	}
+	if t.bwindow != nil {
+		t.bwindow.Close()
+		t.pwindow.Close()
+	}
+
+	width := screenWidth - marginInt[1] - marginInt[3]
+	height := screenHeight - marginInt[0] - marginInt[2]
+	if t.isPreviewEnabled() {
+		createPreviewWindow := func(y int, x int, w int, h int) {
+			t.bwindow = C.NewWindow(y, x, w, h, true)
+			t.pwindow = C.NewWindow(y+1, x+2, w-4, h-2, false)
+		}
+		switch t.preview.position {
+		case posUp:
+			pheight := calculateSize(height, t.preview.size, minHeight, 3)
+			t.window = C.NewWindow(
+				marginInt[0]+pheight, marginInt[3], width, height-pheight, false)
+			createPreviewWindow(marginInt[0], marginInt[3], width, pheight)
+		case posDown:
+			pheight := calculateSize(height, t.preview.size, minHeight, 3)
+			t.window = C.NewWindow(
+				marginInt[0], marginInt[3], width, height-pheight, false)
+			createPreviewWindow(marginInt[0]+height-pheight, marginInt[3], width, pheight)
+		case posLeft:
+			pwidth := calculateSize(width, t.preview.size, minWidth, 5)
+			t.window = C.NewWindow(
+				marginInt[0], marginInt[3]+pwidth, width-pwidth, height, false)
+			createPreviewWindow(marginInt[0], marginInt[3], pwidth, height)
+		case posRight:
+			pwidth := calculateSize(width, t.preview.size, minWidth, 5)
+			t.window = C.NewWindow(
+				marginInt[0], marginInt[3], width-pwidth, height, false)
+			createPreviewWindow(marginInt[0], marginInt[3]+width-pwidth, pwidth, height)
+		}
+	} else {
+		t.window = C.NewWindow(
+			marginInt[0],
+			marginInt[3],
+			width,
+			height, false)
+	}
 }
 
 func (t *Terminal) move(y int, x int, clear bool) {
-	x += t.marginInt[3]
-	maxy := C.MaxY()
 	if !t.reverse {
-		y = maxy - y - 1 - t.marginInt[2]
-	} else {
-		y += t.marginInt[0]
+		y = t.window.Height - y - 1
 	}
 
 	if clear {
-		C.MoveAndClear(y, x)
+		t.window.MoveAndClear(y, x)
 	} else {
-		C.Move(y, x)
+		t.window.Move(y, x)
 	}
 }
 
@@ -414,24 +508,24 @@ func (t *Terminal) placeCursor() {
 
 func (t *Terminal) printPrompt() {
 	t.move(0, 0, true)
-	C.CPrint(C.ColPrompt, true, t.prompt)
-	C.CPrint(C.ColNormal, true, string(t.input))
+	t.window.CPrint(C.ColPrompt, true, t.prompt)
+	t.window.CPrint(C.ColNormal, true, string(t.input))
 }
 
 func (t *Terminal) printInfo() {
 	if t.inlineInfo {
 		t.move(0, displayWidth([]rune(t.prompt))+displayWidth(t.input)+1, true)
 		if t.reading {
-			C.CPrint(C.ColSpinner, true, " < ")
+			t.window.CPrint(C.ColSpinner, true, " < ")
 		} else {
-			C.CPrint(C.ColPrompt, true, " < ")
+			t.window.CPrint(C.ColPrompt, true, " < ")
 		}
 	} else {
 		t.move(1, 0, true)
 		if t.reading {
 			duration := int64(spinnerDuration)
 			idx := (time.Now().UnixNano() % (duration * int64(len(_spinner)))) / duration
-			C.CPrint(C.ColSpinner, true, _spinner[idx])
+			t.window.CPrint(C.ColSpinner, true, _spinner[idx])
 		}
 		t.move(1, 2, false)
 	}
@@ -450,18 +544,14 @@ func (t *Terminal) printInfo() {
 	if t.progress > 0 && t.progress < 100 {
 		output += fmt.Sprintf(" (%d%%)", t.progress)
 	}
-	C.CPrint(C.ColInfo, false, output)
-}
-
-func (t *Terminal) maxHeight() int {
-	return C.MaxY() - t.marginInt[0] - t.marginInt[2]
+	t.window.CPrint(C.ColInfo, false, output)
 }
 
 func (t *Terminal) printHeader() {
 	if len(t.header) == 0 {
 		return
 	}
-	max := t.maxHeight()
+	max := t.window.Height
 	var state *ansiState
 	for idx, lineStr := range t.header {
 		line := idx + 2
@@ -471,10 +561,10 @@ func (t *Terminal) printHeader() {
 		if line >= max {
 			continue
 		}
-		trimmed, colors, newState := extractColor(lineStr, state)
+		trimmed, colors, newState := extractColor(lineStr, state, nil)
 		state = newState
 		item := &Item{
-			text:   []rune(trimmed),
+			text:   util.RunesToChars([]rune(trimmed)),
 			colors: colors,
 			rank:   buildEmptyRank(0)}
 
@@ -495,27 +585,36 @@ func (t *Terminal) printList() {
 		}
 		t.move(line, 0, true)
 		if i < count {
-			t.printItem(t.merger.Get(i+t.offset), i == t.cy-t.offset)
+			t.printItem(t.merger.Get(i+t.offset), i, i == t.cy-t.offset)
 		}
 	}
 }
 
-func (t *Terminal) printItem(item *Item, current bool) {
+func (t *Terminal) printItem(item *Item, i int, current bool) {
 	_, selected := t.selected[item.Index()]
+	label := " "
+	if t.jumping != jumpDisabled {
+		if i < len(t.jumpLabels) {
+			// Striped
+			current = i%2 == 0
+			label = t.jumpLabels[i : i+1]
+		}
+	} else if current {
+		label = ">"
+	}
+	t.window.CPrint(C.ColCursor, true, label)
 	if current {
-		C.CPrint(C.ColCursor, true, ">")
 		if selected {
-			C.CPrint(C.ColSelected, true, ">")
+			t.window.CPrint(C.ColSelected, true, ">")
 		} else {
-			C.CPrint(C.ColCurrent, true, " ")
+			t.window.CPrint(C.ColCurrent, true, " ")
 		}
 		t.printHighlighted(item, true, C.ColCurrent, C.ColCurrentMatch, true)
 	} else {
-		C.CPrint(C.ColCursor, true, " ")
 		if selected {
-			C.CPrint(C.ColSelected, true, ">")
+			t.window.CPrint(C.ColSelected, true, ">")
 		} else {
-			C.Print(" ")
+			t.window.Print(" ")
 		}
 		t.printHighlighted(item, false, 0, C.ColMatch, false)
 	}
@@ -557,6 +656,17 @@ func trimLeft(runes []rune, width int) ([]rune, int32) {
 	return runes, trimmed
 }
 
+func overflow(runes []rune, max int) bool {
+	l := 0
+	for _, r := range runes {
+		l += runeWidth(r, l)
+		if l > max {
+			return true
+		}
+	}
+	return false
+}
+
 func (t *Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int, current bool) {
 	var maxe int
 	for _, offset := range item.offsets {
@@ -564,22 +674,20 @@ func (t *Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int, c
 	}
 
 	// Overflow
-	text := make([]rune, len(item.text))
-	copy(text, item.text)
+	text := make([]rune, item.text.Length())
+	copy(text, item.text.ToRunes())
 	offsets := item.colorOffsets(col2, bold, current)
-	maxWidth := C.MaxX() - 3 - t.marginInt[1] - t.marginInt[3]
+	maxWidth := t.window.Width - 3
 	maxe = util.Constrain(maxe+util.Min(maxWidth/2-2, t.hscrollOff), 0, len(text))
-	fullWidth := displayWidth(text)
-	if fullWidth > maxWidth {
+	if overflow(text, maxWidth) {
 		if t.hscroll {
 			// Stri..
-			matchEndWidth := displayWidth(text[:maxe])
-			if matchEndWidth <= maxWidth-2 {
+			if !overflow(text[:maxe], maxWidth-2) {
 				text, _ = trimRight(text, maxWidth-2)
 				text = append(text, []rune("..")...)
 			} else {
 				// Stri..
-				if matchEndWidth < fullWidth-2 {
+				if overflow(text[maxe:], 2) {
 					text = append(text[:maxe], []rune("..")...)
 				}
 				// ..ri..
@@ -617,11 +725,11 @@ func (t *Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int, c
 		e := util.Constrain32(offset.offset[1], index, maxOffset)
 
 		substr, prefixWidth = processTabs(text[index:b], prefixWidth)
-		C.CPrint(col1, bold, substr)
+		t.window.CPrint(col1, bold, substr)
 
 		if b < e {
 			substr, prefixWidth = processTabs(text[b:e], prefixWidth)
-			C.CPrint(offset.color, offset.bold, substr)
+			t.window.CPrint(offset.color, offset.bold, substr)
 		}
 
 		index = e
@@ -631,10 +739,20 @@ func (t *Terminal) printHighlighted(item *Item, bold bool, col1 int, col2 int, c
 	}
 	if index < maxOffset {
 		substr, _ = processTabs(text[index:], prefixWidth)
-		C.CPrint(col1, bold, substr)
+		t.window.CPrint(col1, bold, substr)
 	}
 }
 
+func (t *Terminal) printPreview() {
+	t.pwindow.Erase()
+	extractColor(t.previewTxt, nil, func(str string, ansi *ansiState) bool {
+		if ansi != nil && ansi.colored() {
+			return t.pwindow.CFill(str, ansi.fg, ansi.bg, ansi.bold)
+		}
+		return t.pwindow.Fill(str)
+	})
+}
+
 func processTabs(runes []rune, prefixWidth int) (string, int) {
 	var strbuf bytes.Buffer
 	l := prefixWidth
@@ -651,16 +769,24 @@ func processTabs(runes []rune, prefixWidth int) (string, int) {
 }
 
 func (t *Terminal) printAll() {
-	t.calculateMargins()
+	t.resizeWindows()
 	t.printList()
 	t.printPrompt()
 	t.printInfo()
 	t.printHeader()
+	if t.isPreviewEnabled() {
+		t.printPreview()
+	}
 }
 
 func (t *Terminal) refresh() {
 	if !t.suppress {
-		C.Refresh()
+		if t.isPreviewEnabled() {
+			t.bwindow.Refresh()
+			t.pwindow.Refresh()
+		}
+		t.window.Refresh()
+		C.DoUpdate()
 	}
 }
 
@@ -717,10 +843,10 @@ func keyMatch(key int, event C.Event) bool {
 }
 
 func quoteEntry(entry string) string {
-	return fmt.Sprintf("%q", entry)
+	return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
 }
 
-func executeCommand(template string, replacement string) {
+func (t *Terminal) executeCommand(template string, replacement string) {
 	command := strings.Replace(template, "{}", replacement, -1)
 	cmd := util.ExecCommand(command)
 	cmd.Stdin = os.Stdin
@@ -728,7 +854,19 @@ func executeCommand(template string, replacement string) {
 	cmd.Stderr = os.Stderr
 	C.Endwin()
 	cmd.Run()
-	C.Refresh()
+	t.refresh()
+}
+
+func (t *Terminal) hasPreviewWindow() bool {
+	return t.previewBox != nil
+}
+
+func (t *Terminal) isPreviewEnabled() bool {
+	return t.previewBox != nil && t.previewing
+}
+
+func (t *Terminal) current() string {
+	return t.merger.Get(t.cy).AsString(t.ansi)
 }
 
 // Loop is called to start Terminal I/O
@@ -753,10 +891,10 @@ func (t *Terminal) Loop() {
 
 		t.mutex.Lock()
 		t.initFunc()
-		t.calculateMargins()
+		t.resizeWindows()
 		t.printPrompt()
 		t.placeCursor()
-		C.Refresh()
+		t.refresh()
 		t.printInfo()
 		t.printHeader()
 		t.mutex.Unlock()
@@ -781,6 +919,31 @@ func (t *Terminal) Loop() {
 		}()
 	}
 
+	if t.hasPreviewWindow() {
+		go func() {
+			for {
+				request := previewRequest{false, ""}
+				t.previewBox.Wait(func(events *util.Events) {
+					for req, value := range *events {
+						switch req {
+						case reqPreviewEnqueue:
+							request = value.(previewRequest)
+						}
+					}
+					events.Clear()
+				})
+				if request.ok {
+					command := strings.Replace(t.preview.command, "{}", quoteEntry(request.str), -1)
+					cmd := util.ExecCommand(command)
+					out, _ := cmd.CombinedOutput()
+					t.reqBox.Set(reqPreviewDisplay, string(out))
+				} else {
+					t.reqBox.Set(reqPreviewDisplay, "")
+				}
+			}
+		}()
+	}
+
 	exit := func(code int) {
 		if code <= exitNoMatch && t.history != nil {
 			t.history.append(string(t.input))
@@ -789,11 +952,12 @@ func (t *Terminal) Loop() {
 	}
 
 	go func() {
+		focused := previewRequest{false, ""}
 		for {
 			t.reqBox.Wait(func(events *util.Events) {
 				defer events.Clear()
 				t.mutex.Lock()
-				for req := range *events {
+				for req, value := range *events {
 					switch req {
 					case reqPrompt:
 						t.printPrompt()
@@ -804,6 +968,24 @@ func (t *Terminal) Loop() {
 						t.printInfo()
 					case reqList:
 						t.printList()
+						cnt := t.merger.Length()
+						var currentFocus previewRequest
+						if cnt > 0 && cnt > t.cy {
+							currentFocus = previewRequest{true, t.current()}
+						} else {
+							currentFocus = previewRequest{false, ""}
+						}
+						if currentFocus != focused {
+							focused = currentFocus
+							if t.isPreviewEnabled() {
+								t.previewBox.Set(reqPreviewEnqueue, focused)
+							}
+						}
+					case reqJump:
+						if t.merger.Length() == 0 {
+							t.jumping = jumpDisabled
+						}
+						t.printList()
 					case reqHeader:
 						t.printHeader()
 					case reqRefresh:
@@ -819,6 +1001,13 @@ func (t *Terminal) Loop() {
 							exit(exitOk)
 						}
 						exit(exitNoMatch)
+					case reqPreviewDisplay:
+						t.previewTxt = value.(string)
+						t.printPreview()
+					case reqPrintQuery:
+						C.Close()
+						fmt.Println(string(t.input))
+						exit(exitOk)
 					case reqQuit:
 						C.Close()
 						exit(exitInterrupt)
@@ -880,7 +1069,7 @@ func (t *Terminal) Loop() {
 			case actExecute:
 				if t.cy >= 0 && t.cy < t.merger.Length() {
 					item := t.merger.Get(t.cy)
-					executeCommand(t.execmap[mapkey], quoteEntry(item.AsString(t.ansi)))
+					t.executeCommand(t.execmap[mapkey], quoteEntry(item.AsString(t.ansi)))
 				}
 			case actExecuteMulti:
 				if len(t.selected) > 0 {
@@ -888,13 +1077,23 @@ func (t *Terminal) Loop() {
 					for i, sel := range t.sortSelected() {
 						sels[i] = quoteEntry(*sel.text)
 					}
-					executeCommand(t.execmap[mapkey], strings.Join(sels, " "))
+					t.executeCommand(t.execmap[mapkey], strings.Join(sels, " "))
 				} else {
 					return doAction(actExecute, mapkey)
 				}
 			case actInvalid:
 				t.mutex.Unlock()
 				return false
+			case actTogglePreview:
+				if t.hasPreviewWindow() {
+					t.previewing = !t.previewing
+					t.resizeWindows()
+					cnt := t.merger.Length()
+					if t.previewing && cnt > 0 && cnt > t.cy {
+						t.previewBox.Set(reqPreviewEnqueue, previewRequest{true, t.current()})
+					}
+					req(reqList, reqInfo)
+				}
 			case actToggleSort:
 				t.sort = !t.sort
 				t.eventBox.Set(EvtSearchNew, t.sort)
@@ -906,6 +1105,8 @@ func (t *Terminal) Loop() {
 				if t.cx > 0 {
 					t.cx--
 				}
+			case actPrintQuery:
+				req(reqPrintQuery)
 			case actAbort:
 				req(reqQuit)
 			case actDeleteChar:
@@ -1017,6 +1218,12 @@ func (t *Terminal) Loop() {
 			case actPageDown:
 				t.vmove(-(t.maxItems() - 1))
 				req(reqList)
+			case actJump:
+				t.jumping = jumpEnabled
+				req(reqJump)
+			case actJumpAccept:
+				t.jumping = jumpAcceptEnabled
+				req(reqJump)
 			case actBackwardWord:
 				t.cx = findLastMatch("[^[:alnum:]][[:alnum:]]", string(t.input[:t.cx])) + 1
 			case actForwardWord:
@@ -1054,20 +1261,19 @@ func (t *Terminal) Loop() {
 				mx, my := me.X, me.Y
 				if me.S != 0 {
 					// Scroll
-					if t.merger.Length() > 0 {
+					if t.window.Enclose(my, mx) && t.merger.Length() > 0 {
 						if t.multi && me.Mod {
 							toggle()
 						}
 						t.vmove(me.S)
 						req(reqList)
 					}
-				} else if mx >= t.marginInt[3] && mx < C.MaxX()-t.marginInt[1] &&
-					my >= t.marginInt[0] && my < C.MaxY()-t.marginInt[2] {
-					mx -= t.marginInt[3]
-					my -= t.marginInt[0]
+				} else if t.window.Enclose(my, mx) {
+					mx -= t.window.Left
+					my -= t.window.Top
 					mx = util.Constrain(mx-displayWidth([]rune(t.prompt)), 0, len(t.input))
 					if !t.reverse {
-						my = t.maxHeight() - my - 1
+						my = t.window.Height - my - 1
 					}
 					min := 2 + len(t.header)
 					if t.inlineInfo {
@@ -1096,18 +1302,32 @@ func (t *Terminal) Loop() {
 			}
 			return true
 		}
-		action := t.keymap[event.Type]
+		changed := false
 		mapkey := event.Type
-		if event.Type == C.Rune {
-			mapkey = int(event.Char) + int(C.AltZ)
-			if act, prs := t.keymap[mapkey]; prs {
-				action = act
+		if t.jumping == jumpDisabled {
+			action := t.keymap[mapkey]
+			if mapkey == C.Rune {
+				mapkey = int(event.Char) + int(C.AltZ)
+				if act, prs := t.keymap[mapkey]; prs {
+					action = act
+				}
 			}
+			if !doAction(action, mapkey) {
+				continue
+			}
+			changed = string(previousInput) != string(t.input)
+		} else {
+			if mapkey == C.Rune {
+				if idx := strings.IndexRune(t.jumpLabels, event.Char); idx >= 0 && idx < t.maxItems() && idx < t.merger.Length() {
+					t.cy = idx + t.offset
+					if t.jumping == jumpAcceptEnabled {
+						req(reqClose)
+					}
+				}
+			}
+			t.jumping = jumpDisabled
+			req(reqList)
 		}
-		if !doAction(action, mapkey) {
-			continue
-		}
-		changed := string(previousInput) != string(t.input)
 		t.mutex.Unlock() // Must be unlocked before touching reqBox
 
 		if changed {
@@ -1160,7 +1380,7 @@ func (t *Terminal) vset(o int) bool {
 }
 
 func (t *Terminal) maxItems() int {
-	max := t.maxHeight() - 2 - len(t.header)
+	max := t.window.Height - 2 - len(t.header)
 	if t.inlineInfo {
 		max++
 	}

src/tokenizer.go

@@ -18,7 +18,7 @@ type Range struct {
 
 // Token contains the tokenized part of the strings and its prefix length
 type Token struct {
-	text         []rune
+	text         util.Chars
 	prefixLength int
 	trimLength   int
 }
@@ -75,15 +75,15 @@ func ParseRange(str *string) (Range, bool) {
 	return newRange(n, n), true
 }
 
-func withPrefixLengths(tokens [][]rune, begin int) []Token {
+func withPrefixLengths(tokens []util.Chars, begin int) []Token {
 	ret := make([]Token, len(tokens))
 
 	prefixLength := begin
 	for idx, token := range tokens {
 		// Need to define a new local variable instead of the reused token to take
 		// the pointer to it
-		ret[idx] = Token{token, prefixLength, util.TrimLen(token)}
-		prefixLength += len(token)
+		ret[idx] = Token{token, prefixLength, token.TrimLength()}
+		prefixLength += token.Length()
 	}
 	return ret
 }
@@ -94,59 +94,60 @@ const (
 	awkWhite
 )
 
-func awkTokenizer(input []rune) ([][]rune, int) {
+func awkTokenizer(input util.Chars) ([]util.Chars, int) {
 	// 9, 32
-	ret := [][]rune{}
-	str := []rune{}
+	ret := []util.Chars{}
 	prefixLength := 0
 	state := awkNil
-	for _, r := range input {
+	numChars := input.Length()
+	begin := 0
+	end := 0
+	for idx := 0; idx < numChars; idx++ {
+		r := input.Get(idx)
 		white := r == 9 || r == 32
 		switch state {
 		case awkNil:
 			if white {
 				prefixLength++
 			} else {
-				state = awkBlack
-				str = append(str, r)
+				state, begin, end = awkBlack, idx, idx+1
 			}
 		case awkBlack:
-			str = append(str, r)
+			end = idx + 1
 			if white {
 				state = awkWhite
 			}
 		case awkWhite:
 			if white {
-				str = append(str, r)
+				end = idx + 1
 			} else {
-				ret = append(ret, str)
-				state = awkBlack
-				str = []rune{r}
+				ret = append(ret, input.Slice(begin, end))
+				state, begin, end = awkBlack, idx, idx+1
 			}
 		}
 	}
-	if len(str) > 0 {
-		ret = append(ret, str)
+	if begin < end {
+		ret = append(ret, input.Slice(begin, end))
 	}
 	return ret, prefixLength
 }
 
 // Tokenize tokenizes the given string with the delimiter
-func Tokenize(runes []rune, delimiter Delimiter) []Token {
+func Tokenize(text util.Chars, delimiter Delimiter) []Token {
 	if delimiter.str == nil && delimiter.regex == nil {
 		// AWK-style (\S+\s*)
-		tokens, prefixLength := awkTokenizer(runes)
+		tokens, prefixLength := awkTokenizer(text)
 		return withPrefixLengths(tokens, prefixLength)
 	}
 
-	var tokens []string
 	if delimiter.str != nil {
-		tokens = strings.Split(string(runes), *delimiter.str)
-		for i := 0; i < len(tokens)-1; i++ {
-			tokens[i] = tokens[i] + *delimiter.str
-		}
-	} else if delimiter.regex != nil {
-		str := string(runes)
+		return withPrefixLengths(text.Split(*delimiter.str), 0)
+	}
+
+	// FIXME performance
+	var tokens []string
+	if delimiter.regex != nil {
+		str := text.ToString()
 		for len(str) > 0 {
 			loc := delimiter.regex.FindStringIndex(str)
 			if loc == nil {
@@ -157,9 +158,9 @@ func Tokenize(runes []rune, delimiter Delimiter) []Token {
 			str = str[last:]
 		}
 	}
-	asRunes := make([][]rune, len(tokens))
+	asRunes := make([]util.Chars, len(tokens))
 	for i, token := range tokens {
-		asRunes[i] = []rune(token)
+		asRunes[i] = util.RunesToChars([]rune(token))
 	}
 	return withPrefixLengths(asRunes, 0)
 }
@@ -167,7 +168,7 @@ func Tokenize(runes []rune, delimiter Delimiter) []Token {
 func joinTokens(tokens []Token) []rune {
 	ret := []rune{}
 	for _, token := range tokens {
-		ret = append(ret, token.text...)
+		ret = append(ret, token.text.ToRunes()...)
 	}
 	return ret
 }
@@ -175,7 +176,7 @@ func joinTokens(tokens []Token) []rune {
 func joinTokensAsRunes(tokens []Token) []rune {
 	ret := []rune{}
 	for _, token := range tokens {
-		ret = append(ret, token.text...)
+		ret = append(ret, token.text.ToRunes()...)
 	}
 	return ret
 }
@@ -185,19 +186,19 @@ func Transform(tokens []Token, withNth []Range) []Token {
 	transTokens := make([]Token, len(withNth))
 	numTokens := len(tokens)
 	for idx, r := range withNth {
-		part := []rune{}
+		parts := []util.Chars{}
 		minIdx := 0
 		if r.begin == r.end {
 			idx := r.begin
 			if idx == rangeEllipsis {
-				part = append(part, joinTokensAsRunes(tokens)...)
+				parts = append(parts, util.RunesToChars(joinTokensAsRunes(tokens)))
 			} else {
 				if idx < 0 {
 					idx += numTokens + 1
 				}
 				if idx >= 1 && idx <= numTokens {
 					minIdx = idx - 1
-					part = append(part, tokens[idx-1].text...)
+					parts = append(parts, tokens[idx-1].text)
 				}
 			}
 		} else {
@@ -224,17 +225,32 @@ func Transform(tokens []Token, withNth []Range) []Token {
 			minIdx = util.Max(0, begin-1)
 			for idx := begin; idx <= end; idx++ {
 				if idx >= 1 && idx <= numTokens {
-					part = append(part, tokens[idx-1].text...)
+					parts = append(parts, tokens[idx-1].text)
 				}
 			}
 		}
+		// Merge multiple parts
+		var merged util.Chars
+		switch len(parts) {
+		case 0:
+			merged = util.RunesToChars([]rune{})
+		case 1:
+			merged = parts[0]
+		default:
+			runes := []rune{}
+			for _, part := range parts {
+				runes = append(runes, part.ToRunes()...)
+			}
+			merged = util.RunesToChars(runes)
+		}
+
 		var prefixLength int
 		if minIdx < numTokens {
 			prefixLength = tokens[minIdx].prefixLength
 		} else {
 			prefixLength = 0
 		}
-		transTokens[idx] = Token{part, prefixLength, util.TrimLen(part)}
+		transTokens[idx] = Token{merged, prefixLength, merged.TrimLength()}
 	}
 	return transTokens
 }

src/tokenizer_test.go

@@ -1,6 +1,10 @@
 package fzf
 
-import "testing"
+import (
+	"testing"
+
+	"github.com/junegunn/fzf/src/util"
+)
 
 func TestParseRange(t *testing.T) {
 	{
@@ -43,23 +47,23 @@ func TestParseRange(t *testing.T) {
 func TestTokenize(t *testing.T) {
 	// AWK-style
 	input := "  abc:  def:  ghi  "
-	tokens := Tokenize([]rune(input), Delimiter{})
-	if string(tokens[0].text) != "abc:  " || tokens[0].prefixLength != 2 || tokens[0].trimLength != 4 {
+	tokens := Tokenize(util.RunesToChars([]rune(input)), Delimiter{})
+	if tokens[0].text.ToString() != "abc:  " || tokens[0].prefixLength != 2 || tokens[0].trimLength != 4 {
 		t.Errorf("%s", tokens)
 	}
 
 	// With delimiter
-	tokens = Tokenize([]rune(input), delimiterRegexp(":"))
-	if string(tokens[0].text) != "  abc:" || tokens[0].prefixLength != 0 || tokens[0].trimLength != 4 {
+	tokens = Tokenize(util.RunesToChars([]rune(input)), delimiterRegexp(":"))
+	if tokens[0].text.ToString() != "  abc:" || tokens[0].prefixLength != 0 || tokens[0].trimLength != 4 {
 		t.Errorf("%s", tokens)
 	}
 
 	// With delimiter regex
-	tokens = Tokenize([]rune(input), delimiterRegexp("\\s+"))
-	if string(tokens[0].text) != "  " || tokens[0].prefixLength != 0 || tokens[0].trimLength != 0 ||
-		string(tokens[1].text) != "abc:  " || tokens[1].prefixLength != 2 || tokens[1].trimLength != 4 ||
-		string(tokens[2].text) != "def:  " || tokens[2].prefixLength != 8 || tokens[2].trimLength != 4 ||
-		string(tokens[3].text) != "ghi  " || tokens[3].prefixLength != 14 || tokens[3].trimLength != 3 {
+	tokens = Tokenize(util.RunesToChars([]rune(input)), delimiterRegexp("\\s+"))
+	if tokens[0].text.ToString() != "  " || tokens[0].prefixLength != 0 || tokens[0].trimLength != 0 ||
+		tokens[1].text.ToString() != "abc:  " || tokens[1].prefixLength != 2 || tokens[1].trimLength != 4 ||
+		tokens[2].text.ToString() != "def:  " || tokens[2].prefixLength != 8 || tokens[2].trimLength != 4 ||
+		tokens[3].text.ToString() != "ghi  " || tokens[3].prefixLength != 14 || tokens[3].trimLength != 3 {
 		t.Errorf("%s", tokens)
 	}
 }
@@ -67,7 +71,7 @@ func TestTokenize(t *testing.T) {
 func TestTransform(t *testing.T) {
 	input := "  abc:  def:  ghi:  jkl"
 	{
-		tokens := Tokenize([]rune(input), Delimiter{})
+		tokens := Tokenize(util.RunesToChars([]rune(input)), Delimiter{})
 		{
 			ranges := splitNth("1,2,3")
 			tx := Transform(tokens, ranges)
@@ -80,25 +84,25 @@ func TestTransform(t *testing.T) {
 			tx := Transform(tokens, ranges)
 			if string(joinTokens(tx)) != "abc:  def:  ghi:  def:  ghi:  jklabc:  " ||
 				len(tx) != 4 ||
-				string(tx[0].text) != "abc:  def:  " || tx[0].prefixLength != 2 ||
-				string(tx[1].text) != "ghi:  " || tx[1].prefixLength != 14 ||
-				string(tx[2].text) != "def:  ghi:  jkl" || tx[2].prefixLength != 8 ||
-				string(tx[3].text) != "abc:  " || tx[3].prefixLength != 2 {
+				tx[0].text.ToString() != "abc:  def:  " || tx[0].prefixLength != 2 ||
+				tx[1].text.ToString() != "ghi:  " || tx[1].prefixLength != 14 ||
+				tx[2].text.ToString() != "def:  ghi:  jkl" || tx[2].prefixLength != 8 ||
+				tx[3].text.ToString() != "abc:  " || tx[3].prefixLength != 2 {
 				t.Errorf("%s", tx)
 			}
 		}
 	}
 	{
-		tokens := Tokenize([]rune(input), delimiterRegexp(":"))
+		tokens := Tokenize(util.RunesToChars([]rune(input)), delimiterRegexp(":"))
 		{
 			ranges := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
 			if string(joinTokens(tx)) != "  abc:  def:  ghi:  def:  ghi:  jkl  abc:" ||
 				len(tx) != 4 ||
-				string(tx[0].text) != "  abc:  def:" || tx[0].prefixLength != 0 ||
-				string(tx[1].text) != "  ghi:" || tx[1].prefixLength != 12 ||
-				string(tx[2].text) != "  def:  ghi:  jkl" || tx[2].prefixLength != 6 ||
-				string(tx[3].text) != "  abc:" || tx[3].prefixLength != 0 {
+				tx[0].text.ToString() != "  abc:  def:" || tx[0].prefixLength != 0 ||
+				tx[1].text.ToString() != "  ghi:" || tx[1].prefixLength != 12 ||
+				tx[2].text.ToString() != "  def:  ghi:  jkl" || tx[2].prefixLength != 6 ||
+				tx[3].text.ToString() != "  abc:" || tx[3].prefixLength != 0 {
 				t.Errorf("%s", tx)
 			}
 		}

src/util/chars.go

@@ -0,0 +1,156 @@
+package util
+
+import (
+	"unicode/utf8"
+)
+
+type Chars struct {
+	runes []rune
+	bytes []byte
+}
+
+// ToChars converts byte array into rune array
+func ToChars(bytea []byte) Chars {
+	var runes []rune
+	ascii := true
+	numBytes := len(bytea)
+	for i := 0; i < numBytes; {
+		if bytea[i] < utf8.RuneSelf {
+			if !ascii {
+				runes = append(runes, rune(bytea[i]))
+			}
+			i++
+		} else {
+			if ascii {
+				ascii = false
+				runes = make([]rune, i, numBytes)
+				for j := 0; j < i; j++ {
+					runes[j] = rune(bytea[j])
+				}
+			}
+			r, sz := utf8.DecodeRune(bytea[i:])
+			i += sz
+			runes = append(runes, r)
+		}
+	}
+	if ascii {
+		return Chars{bytes: bytea}
+	}
+	return Chars{runes: runes}
+}
+
+func RunesToChars(runes []rune) Chars {
+	return Chars{runes: runes}
+}
+
+func (chars *Chars) Get(i int) rune {
+	if chars.runes != nil {
+		return chars.runes[i]
+	}
+	return rune(chars.bytes[i])
+}
+
+func (chars *Chars) Length() int {
+	if chars.runes != nil {
+		return len(chars.runes)
+	}
+	return len(chars.bytes)
+}
+
+// TrimLength returns the length after trimming leading and trailing whitespaces
+func (chars *Chars) TrimLength() int {
+	var i int
+	len := chars.Length()
+	for i = len - 1; i >= 0; i-- {
+		char := chars.Get(i)
+		if char != ' ' && char != '\t' {
+			break
+		}
+	}
+	// Completely empty
+	if i < 0 {
+		return 0
+	}
+
+	var j int
+	for j = 0; j < len; j++ {
+		char := chars.Get(j)
+		if char != ' ' && char != '\t' {
+			break
+		}
+	}
+	return i - j + 1
+}
+
+func (chars *Chars) TrailingWhitespaces() int {
+	whitespaces := 0
+	for i := chars.Length() - 1; i >= 0; i-- {
+		char := chars.Get(i)
+		if char != ' ' && char != '\t' {
+			break
+		}
+		whitespaces++
+	}
+	return whitespaces
+}
+
+func (chars *Chars) ToString() string {
+	if chars.runes != nil {
+		return string(chars.runes)
+	}
+	return string(chars.bytes)
+}
+
+func (chars *Chars) ToRunes() []rune {
+	if chars.runes != nil {
+		return chars.runes
+	}
+	runes := make([]rune, len(chars.bytes))
+	for idx, b := range chars.bytes {
+		runes[idx] = rune(b)
+	}
+	return runes
+}
+
+func (chars *Chars) Slice(b int, e int) Chars {
+	if chars.runes != nil {
+		return Chars{runes: chars.runes[b:e]}
+	}
+	return Chars{bytes: chars.bytes[b:e]}
+}
+
+func (chars *Chars) Split(delimiter string) []Chars {
+	delim := []rune(delimiter)
+	numChars := chars.Length()
+	numDelim := len(delim)
+	begin := 0
+	ret := make([]Chars, 0, 1)
+
+	for index := 0; index < numChars; {
+		if index+numDelim <= numChars {
+			match := true
+			for off, d := range delim {
+				if chars.Get(index+off) != d {
+					match = false
+					break
+				}
+			}
+			// Found the delimiter
+			if match {
+				incr := Max(numDelim, 1)
+				ret = append(ret, chars.Slice(begin, index+incr))
+				index += incr
+				begin = index
+				continue
+			}
+		} else {
+			// Impossible to find the delimiter in the remaining substring
+			break
+		}
+		index++
+	}
+	if begin < numChars || len(ret) == 0 {
+		ret = append(ret, chars.Slice(begin, numChars))
+	}
+	return ret
+}

src/util/chars_test.go

@@ -0,0 +1,82 @@
+package util
+
+import "testing"
+
+func TestToCharsNil(t *testing.T) {
+	bs := Chars{bytes: []byte{}}
+	if bs.bytes == nil || bs.runes != nil {
+		t.Error()
+	}
+	rs := RunesToChars([]rune{})
+	if rs.bytes != nil || rs.runes == nil {
+		t.Error()
+	}
+}
+
+func TestToCharsAscii(t *testing.T) {
+	chars := ToChars([]byte("foobar"))
+	if chars.ToString() != "foobar" || chars.runes != nil {
+		t.Error()
+	}
+}
+
+func TestCharsLength(t *testing.T) {
+	chars := ToChars([]byte("\tabc한글  "))
+	if chars.Length() != 8 || chars.TrimLength() != 5 {
+		t.Error()
+	}
+}
+
+func TestCharsToString(t *testing.T) {
+	text := "\tabc한글  "
+	chars := ToChars([]byte(text))
+	if chars.ToString() != text {
+		t.Error()
+	}
+}
+
+func TestTrimLength(t *testing.T) {
+	check := func(str string, exp int) {
+		chars := ToChars([]byte(str))
+		trimmed := chars.TrimLength()
+		if trimmed != exp {
+			t.Errorf("Invalid TrimLength result for '%s': %d (expected %d)",
+				str, trimmed, exp)
+		}
+	}
+	check("hello", 5)
+	check("hello ", 5)
+	check("hello  ", 5)
+	check(" hello", 5)
+	check("  hello", 5)
+	check(" hello ", 5)
+	check("  hello  ", 5)
+	check("h   o", 5)
+	check("  h   o  ", 5)
+	check("         ", 0)
+}
+
+func TestSplit(t *testing.T) {
+	check := func(str string, delim string, tokens ...string) {
+		input := ToChars([]byte(str))
+		result := input.Split(delim)
+		if len(result) != len(tokens) {
+			t.Errorf("Invalid Split result for '%s': %d tokens found (expected %d): %s",
+				str, len(result), len(tokens), result)
+		}
+		for idx, token := range tokens {
+			if result[idx].ToString() != token {
+				t.Errorf("Invalid Split result for '%s': %s (expected %s)",
+					str, result[idx].ToString(), token)
+			}
+		}
+	}
+	check("abc:def::", ":", "abc:", "def:", ":")
+	check("abc:def::", "-", "abc:def::")
+	check("abc", "", "a", "b", "c")
+	check("abc", "a", "a", "bc")
+	check("abc", "ab", "ab", "c")
+	check("abc", "abc", "abc")
+	check("abc", "abcd", "abc")
+	check("", "abcd", "")
+}

src/util/util.go

@@ -7,18 +7,14 @@ import (
 	"os"
 	"os/exec"
 	"time"
-	"unicode/utf8"
 )
 
 // Max returns the largest integer
-func Max(first int, items ...int) int {
-	max := first
-	for _, item := range items {
-		if item > max {
-			max = item
-		}
+func Max(first int, second int) int {
+	if first >= second {
+		return first
 	}
-	return max
+	return second
 }
 
 // Min returns the smallest integer
@@ -84,58 +80,6 @@ func IsTty() bool {
 	return int(C.isatty(C.int(os.Stdin.Fd()))) != 0
 }
 
-// TrimRight returns rune array with trailing white spaces cut off
-func TrimRight(runes []rune) []rune {
-	var i int
-	for i = len(runes) - 1; i >= 0; i-- {
-		char := runes[i]
-		if char != ' ' && char != '\t' {
-			break
-		}
-	}
-	return runes[0 : i+1]
-}
-
-// BytesToRunes converts byte array into rune array
-func BytesToRunes(bytea []byte) []rune {
-	runes := make([]rune, 0, len(bytea))
-	for i := 0; i < len(bytea); {
-		if bytea[i] < utf8.RuneSelf {
-			runes = append(runes, rune(bytea[i]))
-			i++
-		} else {
-			r, sz := utf8.DecodeRune(bytea[i:])
-			i += sz
-			runes = append(runes, r)
-		}
-	}
-	return runes
-}
-
-// TrimLen returns the length of trimmed rune array
-func TrimLen(runes []rune) int {
-	var i int
-	for i = len(runes) - 1; i >= 0; i-- {
-		char := runes[i]
-		if char != ' ' && char != '\t' {
-			break
-		}
-	}
-	// Completely empty
-	if i < 0 {
-		return 0
-	}
-
-	var j int
-	for j = 0; j < len(runes); j++ {
-		char := runes[j]
-		if char != ' ' && char != '\t' {
-			break
-		}
-	}
-	return i - j + 1
-}
-
 // ExecCommand executes the given command with $SHELL
 func ExecCommand(command string) *exec.Cmd {
 	shell := os.Getenv("SHELL")

src/util/util_test.go

@@ -3,7 +3,7 @@ package util
 import "testing"
 
 func TestMax(t *testing.T) {
-	if Max(-2, 5, 1, 4, 3) != 5 {
+	if Max(-2, 5) != 5 {
 		t.Error("Invalid result")
 	}
 }
@@ -20,23 +20,3 @@ func TestContrain(t *testing.T) {
 		t.Error("Expected", 3)
 	}
 }
-
-func TestTrimLen(t *testing.T) {
-	check := func(str string, exp int) {
-		trimmed := TrimLen([]rune(str))
-		if trimmed != exp {
-			t.Errorf("Invalid TrimLen result for '%s': %d (expected %d)",
-				str, trimmed, exp)
-		}
-	}
-	check("hello", 5)
-	check("hello ", 5)
-	check("hello  ", 5)
-	check(" hello", 5)
-	check("  hello", 5)
-	check(" hello ", 5)
-	check("  hello  ", 5)
-	check("h   o", 5)
-	check("  h   o  ", 5)
-	check("         ", 0)
-}

test/fzf.vader

@@ -1,5 +1,6 @@
 Execute (Setup):
   let g:dir = fnamemodify(g:vader_file, ':p:h')
+  unlet! g:fzf_layout g:fzf_action g:fzf_history_dir
   Log 'Test directory: ' . g:dir
   Save &acd
 
@@ -43,6 +44,11 @@ Execute (fzf#run with dir option and noautochdir):
   " No change in working directory
   AssertEqual cwd, getcwd()
 
+  call fzf#run({'source': ['/foobar'], 'sink': 'tabe', 'dir': '/tmp', 'options': '-1'})
+  AssertEqual cwd, getcwd()
+  tabclose
+  AssertEqual cwd, getcwd()
+
 Execute (Incomplete fzf#run with dir option and autochdir):
   set acd
   let cwd = getcwd()
@@ -64,6 +70,79 @@ Execute (fzf#run with dir option and autochdir when final cwd is same as dir):
   " Working directory changed due to &acd
   AssertEqual '/', getcwd()
 
+Execute (fzf#wrap):
+  AssertThrows fzf#wrap({'foo': 'bar'})
+
+  let opts = fzf#wrap('foobar')
+  Log opts
+  AssertEqual '~40%', opts.down
+  Assert opts.options =~ '--expect='
+  Assert !has_key(opts, 'sink')
+  Assert has_key(opts, 'sink*')
+
+  let opts = fzf#wrap('foobar', {}, 0)
+  Log opts
+  AssertEqual '~40%', opts.down
+
+  let opts = fzf#wrap('foobar', {}, 1)
+  Log opts
+  Assert !has_key(opts, 'down')
+
+  let opts = fzf#wrap('foobar', {'down': '50%'})
+  Log opts
+  AssertEqual '50%', opts.down
+
+  let opts = fzf#wrap('foobar', {'down': '50%'}, 1)
+  Log opts
+  Assert !has_key(opts, 'down')
+
+  let opts = fzf#wrap('foobar', {'sink': 'e'})
+  Log opts
+  AssertEqual 'e', opts.sink
+  Assert !has_key(opts, 'sink*')
+
+  let opts = fzf#wrap('foobar', {'options': '--reverse'})
+  Log opts
+  Assert opts.options =~ '--expect='
+  Assert opts.options =~ '--reverse'
+
+  let g:fzf_layout = {'window': 'enew'}
+  let opts = fzf#wrap('foobar')
+  Log opts
+  AssertEqual 'enew', opts.window
+
+  let opts = fzf#wrap('foobar', {}, 1)
+  Log opts
+  Assert !has_key(opts, 'window')
+
+  let opts = fzf#wrap('foobar', {'right': '50%'})
+  Log opts
+  Assert !has_key(opts, 'window')
+  AssertEqual '50%', opts.right
+
+  let opts = fzf#wrap('foobar', {'right': '50%'}, 1)
+  Log opts
+  Assert !has_key(opts, 'window')
+  Assert !has_key(opts, 'right')
+
+  let g:fzf_action = {'a': 'tabe'}
+  let opts = fzf#wrap('foobar')
+  Log opts
+  Assert opts.options =~ '--expect=a'
+  Assert !has_key(opts, 'sink')
+  Assert has_key(opts, 'sink*')
+
+  let opts = fzf#wrap('foobar', {'sink': 'e'})
+  Log opts
+  AssertEqual 'e', opts.sink
+  Assert !has_key(opts, 'sink*')
+
+  let g:fzf_history_dir = '/tmp'
+  let opts = fzf#wrap('foobar', {'options': '--color light'})
+  Log opts
+  Assert opts.options =~ '--history /tmp/foobar'
+  Assert opts.options =~ '--color light'
+
 Execute (Cleanup):
   unlet g:dir
   Restore

test/test_go.rb

@@ -36,6 +36,10 @@ end
 
 class Shell
   class << self
+    def unsets
+      'unset FZF_DEFAULT_COMMAND FZF_DEFAULT_OPTS FZF_CTRL_T_COMMAND FZF_CTRL_T_OPTS FZF_ALT_C_COMMAND FZF_ALT_C_OPTS FZF_CTRL_R_OPTS;'
+    end
+
     def bash
       'PS1= PROMPT_COMMAND= bash --rcfile ~/.fzf.bash'
     end
@@ -45,6 +49,10 @@ class Shell
       FileUtils.cp File.expand_path('~/.fzf.zsh'), '/tmp/fzf-zsh/.zshrc'
       'PS1= PROMPT_COMMAND= HISTSIZE=100 ZDOTDIR=/tmp/fzf-zsh zsh'
     end
+
+    def fish
+      'fish'
+    end
   end
 end
 
@@ -57,11 +65,11 @@ class Tmux
     @win =
       case shell
       when :bash
-        go("new-window -d -P -F '#I' '#{Shell.bash}'").first
+        go("new-window -d -P -F '#I' '#{Shell.unsets + Shell.bash}'").first
       when :zsh
-        go("new-window -d -P -F '#I' '#{Shell.zsh}'").first
+        go("new-window -d -P -F '#I' '#{Shell.unsets + Shell.zsh}'").first
       when :fish
-        go("new-window -d -P -F '#I' 'fish'").first
+        go("new-window -d -P -F '#I' '#{Shell.unsets + Shell.fish}'").first
       else
         raise "Unknown shell: #{shell}"
       end
@@ -90,6 +98,10 @@ class Tmux
     go("send-keys -t #{target} #{args}")
   end
 
+  def paste str
+    %x[tmux setb '#{str.gsub("'", "'\\''")}' \\; pasteb -t #{win} \\; send-keys -t #{win} Enter]
+  end
+
   def capture pane = 0
     File.unlink TEMPNAME while File.exists? TEMPNAME
     wait do
@@ -149,12 +161,6 @@ class TestBase < Minitest::Test
      @temp_suffix].join '-'
   end
 
-  def setup
-    ENV.delete 'FZF_DEFAULT_OPTS'
-    ENV.delete 'FZF_CTRL_T_COMMAND'
-    ENV.delete 'FZF_DEFAULT_COMMAND'
-  end
-
   def readonce
     wait { File.exists?(tempname) }
     File.read(tempname)
@@ -362,7 +368,7 @@ class TestGoFZF < TestBase
   end
 
   def test_query_unicode
-    tmux.send_keys "(echo abc; echo 가나다) | #{fzf :query, '가다'}", :Enter
+    tmux.paste "(echo abc; echo 가나다) | #{fzf :query, '가다'}"
     tmux.until { |lines| lines[-2].include? '1/2' }
     tmux.send_keys :Enter
     assert_equal ['가나다'], readonce.split($/)
@@ -430,6 +436,10 @@ class TestGoFZF < TestBase
     test.call 'f3', 'f3'
     test.call 'f2,f4', 'f2', 'f2'
     test.call 'f2,f4', 'f4', 'f4'
+    test.call 'alt-/', [:Escape, :/]
+    %w[f5 f6 f7 f8 f9 f10].each do |key|
+      test.call 'f5,f6,f7,f8,f9,f10', key, key
+    end
     test.call '@', '@'
   end
 
@@ -771,6 +781,13 @@ class TestGoFZF < TestBase
     assert_equal %w[4 5 6 9], readonce.split($/)
   end
 
+  def test_bind_print_query
+    tmux.send_keys "seq 1 1000 | #{fzf '-m --bind=ctrl-j:print-query'}", :Enter
+    tmux.until { |lines| lines[-2].end_with? '/1000' }
+    tmux.send_keys 'print-my-query', 'C-j'
+    assert_equal %w[print-my-query], readonce.split($/)
+  end
+
   def test_long_line
     data = '.' * 256 * 1024
     File.open(tempname, 'w') do |f|
@@ -858,20 +875,34 @@ class TestGoFZF < TestBase
 
   def test_execute
     output = '/tmp/fzf-test-execute'
-    opts = %[--bind \\"alt-a:execute(echo '[{}]' >> #{output}),alt-b:execute[echo '({}), ({})' >> #{output}],C:execute:echo '({}), [{}], @{}@' >> #{output}\\"]
-    tmux.send_keys "seq 100 | #{fzf opts}", :Enter
-    tmux.until { |lines| lines[-2].include? '100/100' }
-    tmux.send_keys :Escape, :a, :Escape, :a
+    opts = %[--bind \\"alt-a:execute(echo [{}] >> #{output}),alt-b:execute[echo /{}{}/ >> #{output}],C:execute:echo /{}{}{}/ >> #{output}\\"]
+    wait = lambda { |exp| tmux.until { |lines| lines[-2].include? exp } }
+    writelines tempname, %w[foo'bar foo"bar foo$bar]
+    tmux.send_keys "cat #{tempname} | #{fzf opts}; sync", :Enter
+    wait['3/3']
+    tmux.send_keys :Escape, :a
+    wait['/3']
+    tmux.send_keys :Escape, :a
+    wait['/3']
     tmux.send_keys :Up
-    tmux.send_keys :Escape, :b, :Escape, :b
+    tmux.send_keys :Escape, :b
+    wait['/3']
+    tmux.send_keys :Escape, :b
+    wait['/3']
     tmux.send_keys :Up
     tmux.send_keys :C
-    tmux.send_keys 'foobar'
-    tmux.until { |lines| lines[-2].include? '0/100' }
-    tmux.send_keys :Escape, :a, :Escape, :b, :Escape, :c
+    wait['3/3']
+    tmux.send_keys 'barfoo'
+    wait['0/3']
+    tmux.send_keys :Escape, :a
+    wait['/3']
+    tmux.send_keys :Escape, :b
+    wait['/3']
     tmux.send_keys :Enter
     readonce
-    assert_equal ['["1"]', '["1"]', '("2"), ("2")', '("2"), ("2")', '("3"), ["3"], @"3"@'],
+    assert_equal %w[[foo'bar] [foo'bar]
+                    /foo"barfoo"bar/ /foo"barfoo"bar/
+                    /foo$barfoo$barfoo$bar/],
       File.readlines(output).map(&:chomp)
   ensure
     File.unlink output rescue nil
@@ -879,21 +910,24 @@ class TestGoFZF < TestBase
 
   def test_execute_multi
     output = '/tmp/fzf-test-execute-multi'
-    opts = %[--multi --bind \\"alt-a:execute-multi(echo '[{}], @{}@' >> #{output}; sync)\\"]
-    tmux.send_keys "seq 100 | #{fzf opts}", :Enter
-    tmux.until { |lines| lines[-2].include? '100/100' }
+    opts = %[--multi --bind \\"alt-a:execute-multi(echo {}/{} >> #{output}; sync)\\"]
+    writelines tempname, %w[foo'bar foo"bar foo$bar foobar]
+    tmux.send_keys "cat #{tempname} | #{fzf opts}", :Enter
+    tmux.until { |lines| lines[-2].include? '4/4' }
     tmux.send_keys :Escape, :a
-    tmux.until { |lines| lines[-2].include? '/100' }
+    tmux.until { |lines| lines[-2].include? '/4' }
     tmux.send_keys :BTab, :BTab, :BTab
     tmux.send_keys :Escape, :a
-    tmux.until { |lines| lines[-2].include? '/100' }
+    tmux.until { |lines| lines[-2].include? '/4' }
     tmux.send_keys :Tab, :Tab
     tmux.send_keys :Escape, :a
-    tmux.until { |lines| lines[-2].include? '/100' }
+    tmux.until { |lines| lines[-2].include? '/4' }
     tmux.send_keys :Enter
     tmux.prepare
     readonce
-    assert_equal ['["1"], @"1"@', '["1" "2" "3"], @"1" "2" "3"@', '["1" "2" "4"], @"1" "2" "4"@'],
+    assert_equal [%[foo'bar/foo'bar],
+                  %[foo'bar foo"bar foo$bar/foo'bar foo"bar foo$bar],
+                  %[foo'bar foo"bar foobar/foo'bar foo"bar foobar]],
       File.readlines(output).map(&:chomp)
   ensure
     File.unlink output rescue nil
@@ -912,7 +946,7 @@ class TestGoFZF < TestBase
     tmux.until { |lines| lines[-2].include? '1/1' }
     tmux.send_keys 'C-c'
     tmux.prepare
-    assert_equal ['-c / "foo"bar'], File.readlines(output).map(&:chomp)
+    assert_equal ["-c / 'foo'bar"], File.readlines(output).map(&:chomp)
   ensure
     File.unlink output rescue nil
   end
@@ -1026,7 +1060,7 @@ class TestGoFZF < TestBase
     end
   end
 
-  def test_canel
+  def test_cancel
     tmux.send_keys "seq 10 | #{fzf "--bind 2:cancel"}", :Enter
     tmux.until { |lines| lines[-2].include?('10/10') }
     tmux.send_keys '123'
@@ -1163,6 +1197,71 @@ class TestGoFZF < TestBase
     tmux.send_keys :Enter
   end
 
+  def test_jump
+    tmux.send_keys "seq 1000 | #{fzf "--multi --jump-labels 12345 --bind 'ctrl-j:jump'"}", :Enter
+    tmux.until { |lines| lines[-2] == '  1000/1000' }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| lines[-7] == '5 5' }
+    tmux.until { |lines| lines[-8] == '  6' }
+    tmux.send_keys '5'
+    tmux.until { |lines| lines[-7] == '> 5' }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines[-7] == ' >5' }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| lines[-7] == '5>5' }
+    tmux.send_keys '2'
+    tmux.until { |lines| lines[-4] == '> 2' }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines[-4] == ' >2' }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| lines[-7] == '5>5' }
+
+    # Press any key other than jump labels to cancel jump
+    tmux.send_keys '6'
+    tmux.until { |lines| lines[-3] == '> 1' }
+    tmux.send_keys :Tab
+    tmux.until { |lines| lines[-3] == '>>1' }
+    tmux.send_keys :Enter
+    assert_equal %w[5 2 1], readonce.split($/)
+  end
+
+  def test_jump_accept
+    tmux.send_keys "seq 1000 | #{fzf "--multi --jump-labels 12345 --bind 'ctrl-j:jump-accept'"}", :Enter
+    tmux.until { |lines| lines[-2] == '  1000/1000' }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| lines[-7] == '5 5' }
+    tmux.send_keys '3'
+    assert_equal '3', readonce.chomp
+  end
+
+  def test_preview
+    tmux.send_keys %[seq 1000 | sed s/^2$// | #{FZF} --preview 'sleep 0.2; echo {{}-{}}' --bind ?:toggle-preview], :Enter
+    tmux.until { |lines| lines[1].include?(' {1-1}') }
+    tmux.send_keys :Up
+    tmux.until { |lines| lines[1].include?(' {-}') }
+    tmux.send_keys '555'
+    tmux.until { |lines| lines[1].include?(' {555-555}') }
+    tmux.send_keys '?'
+    tmux.until { |lines| !lines[1].include?(' {555-555}') }
+    tmux.send_keys '?'
+    tmux.until { |lines| lines[1].include?(' {555-555}') }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| lines[-2].start_with? '  28/1000' }
+    tmux.send_keys 'foobar'
+    tmux.until { |lines| !lines[1].include?('{') }
+  end
+
+  def test_preview_hidden
+    tmux.send_keys %[seq 1000 | #{FZF} --preview 'echo {{}-{}}' --preview-window down:1:hidden --bind ?:toggle-preview], :Enter
+    tmux.until { |lines| lines[-1] == '>' }
+    tmux.send_keys '?'
+    tmux.until { |lines| lines[-2].include?(' {1-1}') }
+    tmux.send_keys '555'
+    tmux.until { |lines| lines[-2].include?(' {555-555}') }
+    tmux.send_keys '?'
+    tmux.until { |lines| lines[-1] == '> 555' }
+  end
+
 private
   def writelines path, lines
     File.unlink path while File.exists? path
@@ -1220,16 +1319,29 @@ module TestShell
 
   def test_ctrl_t_unicode
     FileUtils.mkdir_p '/tmp/fzf-test'
-    tmux.send_keys 'cd /tmp/fzf-test; echo -n test1 > "fzf-unicode 테스트1"; echo -n test2 > "fzf-unicode 테스트2"', :Enter
+    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/' }
-    tmux.send_keys :BTab, :BTab, pane: 1
+
+    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 :BSpace, pane: 1
+    tmux.until(1) { |lines| lines[-2].start_with? '  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 :Enter, pane: 1
-    tmux.until { |lines| lines[-1].include? 'cat' }
+    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' }
   end
@@ -1437,14 +1549,26 @@ module CompletionTest
 
   def test_file_completion_unicode
     FileUtils.mkdir_p '/tmp/fzf-test'
-    tmux.send_keys 'cd /tmp/fzf-test; echo -n test3 > "fzf-unicode 테스트1"; echo -n test4 > "fzf-unicode 테스트2"', :Enter
+    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 :BTab, :BTab, pane: 1
+
+    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 :BSpace, pane: 1
+    tmux.until(1) { |lines| lines[-2].start_with? '  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 :Enter, pane: 1
-    tmux.until { |lines| lines[-1].include? 'cat' }
+    tmux.until { |lines| lines[-1].include?('cat') || lines[-2].include?('cat') }
     tmux.send_keys :Enter
     tmux.until { |lines| lines[-1].include? 'test3test4' }
   end