0.52.0

Fix #3777

.github/ISSUE_TEMPLATE.md

@@ -1,22 +0,0 @@
-<!-- ISSUES NOT FOLLOWING THIS TEMPLATE WILL BE CLOSED AND DELETED -->
-
-<!-- Check all that apply [x] -->
-
-- [ ] I have read through the manual page (`man fzf`)
-- [ ] I have the latest version of fzf
-- [ ] I have searched through the existing issues
-
-## Info
-
-- OS
-    - [ ] Linux
-    - [ ] Mac OS X
-    - [ ] Windows
-    - [ ] Etc.
-- Shell
-    - [ ] bash
-    - [ ] zsh
-    - [ ] fish
-
-## Problem / Steps to reproduce
-

.github/ISSUE_TEMPLATE/issue_template.yml

@@ -0,0 +1,49 @@
+---
+name: Issue Template
+description: Report a problem or bug related to fzf to help us improve
+
+body:
+  - type: markdown
+    attributes:
+      value: ISSUES NOT FOLLOWING THIS TEMPLATE WILL BE CLOSED AND DELETED
+
+  - type: checkboxes
+    attributes:
+      label: Checklist
+      options:
+        - label: I have read through the manual page (`man fzf`)
+          required: true
+        - label: I have searched through the existing issues
+          required: true
+        - label: For bug reports, I have checked if the bug is reproducible in the latest version of fzf
+          required: false
+
+  - type: input
+    attributes:
+      label: Output of `fzf --version`
+      placeholder: e.g. 0.48.1 (d579e33)
+    validations:
+      required: true
+
+  - type: checkboxes
+    attributes:
+      label: OS
+      options:
+        - label: Linux
+        - label: macOS
+        - label: Windows
+        - label: Etc.
+
+  - type: checkboxes
+    attributes:
+      label: Shell
+      options:
+        - label: bash
+        - label: zsh
+        - label: fish
+
+  - type: textarea
+    attributes:
+      label: Problem / Steps to reproduce
+    validations:
+      required: true

.github/workflows/codeql-analysis.yml

@@ -27,18 +27,18 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@v3
       with:
         languages: ${{ matrix.language }}
 
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@v3
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@v3

.github/workflows/depsreview.yaml

@@ -9,6 +9,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout Repository'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v3
+        uses: actions/dependency-review-action@v4

.github/workflows/linux.yml

@@ -11,18 +11,21 @@ on:
 permissions:
   contents: read
 
+env:
+  LANG: C.UTF-8
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@v5
       with:
-        go-version: 1.19
+        go-version: "1.20"
 
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1
@@ -42,4 +45,7 @@ jobs:
       run: make test
 
     - name: Integration test
-      run: make install && ./install --all && LC_ALL=C tmux new-session -d && ruby test/test_go.rb --verbose
+      run: make install && ./install --all && tmux new-session -d && ruby test/test_go.rb --verbose
+
+    - name: Integration test (tcell)
+      run: TAGS=tcell make clean install && ruby test/test_go.rb --verbose

.github/workflows/macos.yml

@@ -15,14 +15,14 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@v5
       with:
-        go-version: 1.18
+        go-version: "1.20"
 
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1

.github/workflows/sponsors.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Generate Sponsors 💖
         uses: JamesIves/github-sponsors-readme-action@v1

.github/workflows/typos.yml

@@ -6,5 +6,5 @@ jobs:
     name: Spell Check with Typos
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: crate-ci/typos@v1.16.4
+    - uses: actions/checkout@v4
+    - uses: crate-ci/typos@v1.21.0

.goreleaser.yml

@@ -12,6 +12,8 @@ builds:
       - darwin
     goarch:
       - amd64
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     hooks:
@@ -19,11 +21,7 @@ builds:
         sh -c '
         cat > /tmp/fzf-gon-amd64.hcl << EOF
         source = ["./dist/fzf-macos_darwin_amd64_v1/fzf"]
-        bundle_id = "kr.junegunn.fzf"
-        apple_id {
-          username = "junegunn.c@gmail.com"
-          password = "@env:AC_PASSWORD"
-        }
+        bundle_id = "junegunn.fzf"
         sign {
           application_identity = "Developer ID Application: Junegunn Choi (Y254DRW44Z)"
         }
@@ -40,6 +38,8 @@ builds:
       - darwin
     goarch:
       - arm64
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     hooks:
@@ -47,11 +47,7 @@ builds:
         sh -c '
         cat > /tmp/fzf-gon-arm64.hcl << EOF
         source = ["./dist/fzf-macos-arm_darwin_arm64/fzf"]
-        bundle_id = "kr.junegunn.fzf"
-        apple_id {
-          username = "junegunn.c@gmail.com"
-          password = "@env:AC_PASSWORD"
-        }
+        bundle_id = "junegunn.fzf"
         sign {
           application_identity = "Developer ID Application: Junegunn Choi (Y254DRW44Z)"
         }
@@ -79,6 +75,8 @@ builds:
       - 5
       - 6
       - 7
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     ignore:

.tool-versions

@@ -1 +1 @@
-golang 1.20.4
+golang 1.20.13

ADVANCED.md

@@ -1,8 +1,8 @@
 Advanced fzf examples
 ======================
 
-* *Last update: 2023/05/26*
-* *Requires fzf 0.41.0 or above*
+* *Last update: 2024/01/20*
+* *Requires fzf 0.46.0 or above*
 
 ---
 
@@ -16,17 +16,20 @@ Advanced fzf examples
 * [Dynamic reloading of the list](#dynamic-reloading-of-the-list)
     * [Updating the list of processes by pressing CTRL-R](#updating-the-list-of-processes-by-pressing-ctrl-r)
     * [Toggling between data sources](#toggling-between-data-sources)
+    * [Toggling with a single key binding](#toggling-with-a-single-key-binding)
 * [Ripgrep integration](#ripgrep-integration)
     * [Using fzf as the secondary filter](#using-fzf-as-the-secondary-filter)
     * [Using fzf as interactive Ripgrep launcher](#using-fzf-as-interactive-ripgrep-launcher)
     * [Switching to fzf-only search mode](#switching-to-fzf-only-search-mode)
     * [Switching between Ripgrep mode and fzf mode](#switching-between-ripgrep-mode-and-fzf-mode)
+    * [Switching between Ripgrep mode and fzf mode using a single key binding](#switching-between-ripgrep-mode-and-fzf-mode-using-a-single-key-binding)
 * [Log tailing](#log-tailing)
 * [Key bindings for git objects](#key-bindings-for-git-objects)
     * [Files listed in `git status`](#files-listed-in-git-status)
     * [Branches](#branches)
     * [Commit hashes](#commit-hashes)
 * [Color themes](#color-themes)
+    * [fzf Theme Playground](#fzf-theme-playground)
     * [Generating fzf color theme from Vim color schemes](#generating-fzf-color-theme-from-vim-color-schemes)
 
 <!-- vim-markdown-toc -->
@@ -208,6 +211,30 @@ find * | fzf --prompt 'All> ' \
 
 ![image](https://user-images.githubusercontent.com/700826/113465072-46321c00-946c-11eb-9b6f-cda3951df579.png)
 
+### Toggling with a single key binding
+
+The above example uses two different key bindings to toggle between two modes,
+but can we just use a single key binding?
+
+To make a key binding behave differently each time it is pressed, we need:
+
+1. a way to store the current state. i.e. "which mode are we in?"
+2. and a way to dynamically perform different actions depending on the state.
+
+The following example shows how to 1. store the current mode in the prompt
+string, 2. and use this information (`$FZF_PROMPT`) to determine which
+actions to perform using the `transform` action.
+
+```sh
+fd --type file |
+  fzf --prompt 'Files> ' \
+      --header 'CTRL-T: Switch between Files/Directories' \
+      --bind 'ctrl-t:transform:[[ ! $FZF_PROMPT =~ Files ]] &&
+              echo "change-prompt(Files> )+reload(fd --type file)" ||
+              echo "change-prompt(Directories> )+reload(fd --type directory)"' \
+      --preview '[[ $FZF_PROMPT =~ Files ]] && bat --color=always {} || tree -C {}'
+```
+
 Ripgrep integration
 -------------------
 
@@ -442,6 +469,41 @@ INITIAL_QUERY="${*:-}"
 [0.30.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0300
 [0.36.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0360
 
+### Switching between Ripgrep mode and fzf mode using a single key binding
+
+In contrast to the previous version, we use just one hotkey to toggle between
+ripgrep and fzf mode. This is achieved by using the `$FZF_PROMPT` as a state
+within the `transform` action, a feature introduced in [fzf 0.45.0][0.45.0]. A
+more detailed explanation of this feature can be found in a previous section -
+[Toggling with a single keybinding](#toggling-with-a-single-key-binding).
+
+[0.45.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0450
+
+When using the `transform` action, the placeholder (`\{q}`) should be escaped to
+prevent immediate evaluation.
+
+```sh
+#!/usr/bin/env bash
+
+# Switch between Ripgrep mode and fzf filtering mode (CTRL-T)
+rm -f /tmp/rg-fzf-{r,f}
+RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
+INITIAL_QUERY="${*:-}"
+: | fzf --ansi --disabled --query "$INITIAL_QUERY" \
+    --bind "start:reload:$RG_PREFIX {q}" \
+    --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
+    --bind 'ctrl-t:transform:[[ ! $FZF_PROMPT =~ ripgrep ]] &&
+      echo "rebind(change)+change-prompt(1. ripgrep> )+disable-search+transform-query:echo \{q} > /tmp/rg-fzf-f; cat /tmp/rg-fzf-r" ||
+      echo "unbind(change)+change-prompt(2. fzf> )+enable-search+transform-query:echo \{q} > /tmp/rg-fzf-r; cat /tmp/rg-fzf-f"' \
+    --color "hl:-1:underline,hl+:-1:underline:reverse" \
+    --prompt '1. ripgrep> ' \
+    --delimiter : \
+    --header 'CTRL-T: Switch between ripgrep/fzf' \
+    --preview 'bat --color=always {1} --highlight-line {2}' \
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
+    --bind 'enter:become(vim {1} +{2})'
+```
+
 Log tailing
 -----------
 
@@ -490,7 +552,7 @@ pods() {
     - Press enter key on a pod to `kubectl exec` into it
     - Press CTRL-O to open the log in your editor
 - Press CTRL-R to reload the pod list
-- Press CTRL-/ repeatedly to to rotate through a different sets of preview
+- Press CTRL-/ repeatedly to rotate through a different sets of preview
   window options
     1. `80%,border-bottom`
     1. `hidden`
@@ -571,6 +633,12 @@ export FZF_DEFAULT_OPTS='--color=bg+:#293739,bg:#1B1D1E,border:#808080,spinner:#
 
 ![molokai](https://user-images.githubusercontent.com/700826/113475085-8619f300-94ae-11eb-85e4-2766fc3246bf.png)
 
+### fzf Theme Playground
+
+[fzf Theme Playground](https://vitormv.github.io/fzf-themes/) created by
+[Vitor Mello](https://github.com/vitormv) is a webpage where you can
+interactively create fzf themes.
+
 ### Generating fzf color theme from Vim color schemes
 
 The Vim plugin of fzf can generate `--color` option from the current color

BUILD.md

@@ -6,7 +6,7 @@ Build instructions
 
 ### Prerequisites
 
-- Go 1.18 or above
+- Go 1.20 or above
 
 ### Using Makefile
 
@@ -24,24 +24,36 @@ make build
 make release
 ```
 
-> :warning: Makefile uses git commands to determine the version and the
-> revision information for `fzf --version`. So if you're building fzf from an
+> [!WARNING]
+> Makefile uses git commands to determine the version and the revision
+> information for `fzf --version`. So if you're building fzf from an
 > environment where its git information is not available, you have to manually
 > set `$FZF_VERSION` and `$FZF_REVISION`.
 >
 > e.g. `FZF_VERSION=0.24.0 FZF_REVISION=tarball make`
 
+> [!TIP]
+> To build fzf with profiling options enabled, set `TAGS=pprof`
+>
+> ```sh
+> TAGS=pprof make clean install
+> fzf --profile-cpu /tmp/cpu.pprof --profile-mem /tmp/mem.pprof \
+>     --profile-block /tmp/block.pprof --profile-mutex /tmp/mutex.pprof
+> ```
+
 Third-party libraries used
 --------------------------
 
-- [mattn/go-runewidth](https://github.com/mattn/go-runewidth)
-    - Licensed under [MIT](http://mattn.mit-license.org)
+- [rivo/uniseg](https://github.com/rivo/uniseg)
+    - Licensed under [MIT](https://raw.githubusercontent.com/rivo/uniseg/master/LICENSE.txt)
 - [mattn/go-shellwords](https://github.com/mattn/go-shellwords)
     - Licensed under [MIT](http://mattn.mit-license.org)
 - [mattn/go-isatty](https://github.com/mattn/go-isatty)
     - Licensed under [MIT](http://mattn.mit-license.org)
 - [tcell](https://github.com/gdamore/tcell)
     - Licensed under [Apache License 2.0](https://github.com/gdamore/tcell/blob/master/LICENSE)
+- [fastwalk](https://github.com/charlievieth/fastwalk)
+    - Licensed under [MIT](https://raw.githubusercontent.com/charlievieth/fastwalk/master/LICENSE)
 
 License
 -------

CHANGELOG.md

@@ -1,6 +1,317 @@
 CHANGELOG
 =========
 
+0.52.0
+------
+- Added `--highlight-line` to highlight the whole current line (à la `set cursorline` of Vim)
+- Added color names for selected lines: `selected-fg`, `selected-bg`, and `selected-hl`
+  ```sh
+  fzf --border --multi --info inline-right --layout reverse --marker ▏ --pointer ▌ --prompt '▌ '  \
+      --highlight-line --color gutter:-1,selected-bg:238,selected-fg:146,current-fg:189
+  ```
+- Added `click-header` event that is triggered when the header section is clicked. When the event is triggered, `$FZF_CLICK_HEADER_COLUMN` and `$FZF_CLICK_HEADER_LINE` are set.
+  ```sh
+  fd --type f |
+    fzf --header $'[Files] [Directories]' --header-first \
+        --bind 'click-header:transform:
+          (( FZF_CLICK_HEADER_COLUMN <= 7 )) && echo "reload(fd --type f)"
+          (( FZF_CLICK_HEADER_COLUMN >= 9 )) && echo "reload(fd --type d)"
+        '
+  ```
+- Add `$FZF_COMPLETION_{DIR,PATH}_OPTS` for separately customizing the behavior of fuzzy completion
+  ```sh
+  # Set --walker options without 'follow' not to follow symbolic links
+  FZF_COMPLETION_PATH_OPTS="--walker=file,dir,hidden"
+  FZF_COMPLETION_DIR_OPTS="--walker=dir,hidden"
+  ```
+- Fixed Windows argument escaping
+- Bug fixes and improvements
+- The code was heavily refactored to allow using fzf as a library in Go programs. The API is still experimental and subject to change.
+    - https://gist.github.com/junegunn/193990b65be48a38aac6ac49d5669170
+
+0.51.0
+------
+- Added a new environment variable `$FZF_POS` exported to the child processes. It's the vertical position of the cursor in the list starting from 1.
+  ```sh
+  # Toggle selection to the top or to the bottom
+  seq 30 | fzf --multi --bind 'load:pos(10)' \
+    --bind 'shift-up:transform:for _ in $(seq $FZF_POS $FZF_MATCH_COUNT); do echo -n +toggle+up; done' \
+    --bind 'shift-down:transform:for _ in $(seq 1 $FZF_POS); do echo -n +toggle+down; done'
+  ```
+- Added `--with-shell` option to start child processes with a custom shell command and flags
+  ```sh
+  gem list | fzf --with-shell 'ruby -e' \
+    --preview 'pp Gem::Specification.find_by_name({1})' \
+    --bind 'ctrl-o:execute-silent:
+        spec = Gem::Specification.find_by_name({1})
+        [spec.homepage, *spec.metadata.filter { _1.end_with?("uri") }.values].uniq.each do
+          system "open", _1
+        end
+    '
+  ```
+- Added `change-multi` action for dynamically changing `--multi` option
+    - `change-multi` - enable multi-select mode with no limit
+    - `change-multi(NUM)` - enable multi-select mode with a limit
+    - `change-multi(0)` - disable multi-select mode
+- Windows improvements
+    - `become` action is now supported on Windows
+        - Unlike in *nix, this does not use `execve(2)`. Instead it spawns a new process and waits for it to finish, so the exact behavior may differ.
+    - Fixed argument escaping for Windows cmd.exe. No redundant escaping of backslashes.
+- Bug fixes and improvements
+
+0.50.0
+------
+- Search performance optimization. You can observe 50%+ improvement in some scenarios.
+  ```
+  $ rg --line-number --no-heading --smart-case . > $DATA
+
+  $ wc < $DATA
+   5520118 26862362 897487793
+
+  $ hyperfine -w 1 -L bin fzf-0.49.0,fzf-7ce6452,fzf-a5447b8,fzf '{bin} --filter "///" < $DATA | head -30'
+  Summary
+    fzf --filter "///" < $DATA | head -30 ran
+      1.16 ± 0.03 times faster than fzf-a5447b8 --filter "///" < $DATA | head -30
+      1.23 ± 0.03 times faster than fzf-7ce6452 --filter "///" < $DATA | head -30
+      1.52 ± 0.03 times faster than fzf-0.49.0 --filter "///" < $DATA | head -30
+  ```
+- Added `jump` and `jump-cancel` events that are triggered when leaving `jump` mode
+  ```sh
+  # Default behavior
+  fzf --bind space:jump
+
+  # Same as jump-accept action
+  fzf --bind space:jump,jump:accept
+
+  # Accept on jump, abort on cancel
+  fzf --bind space:jump,jump:accept,jump-cancel:abort
+
+  # Change header on jump-cancel
+  fzf --bind 'space:change-header(Type jump label)+jump,jump-cancel:change-header:Jump cancelled'
+  ```
+- Added a new environment variable `$FZF_KEY` exported to the child processes. It's the name of the last key pressed.
+  ```sh
+  fzf --bind 'space:jump,jump:accept,jump-cancel:transform:[[ $FZF_KEY =~ ctrl-c ]] && echo abort'
+  ```
+- fzf can be built with profiling options. See [BUILD.md](BUILD.md) for more information.
+- Bug fixes
+
+0.49.0
+------
+- Ingestion performance improved by around 40% (more or less depending on options)
+- `--info=hidden` and `--info=inline-right` will no longer hide the horizontal separator by default. This gives you more flexibility in customizing the layout.
+    ```sh
+    fzf --border --info=inline-right
+    fzf --border --info=inline-right --separator ═
+    fzf --border --info=inline-right --no-separator
+    fzf --border --info=hidden
+    fzf --border --info=hidden --separator ━
+    fzf --border --info=hidden --no-separator
+    ```
+- Added two environment variables exported to the child processes
+    - `FZF_PREVIEW_LABEL`
+    - `FZF_BORDER_LABEL`
+    ```sh
+    # Use the current value of $FZF_PREVIEW_LABEL to determine which actions to perform
+    git ls-files |
+      fzf --header 'Press CTRL-P to change preview mode' \
+          --bind='ctrl-p:transform:[[ $FZF_PREVIEW_LABEL =~ cat ]] \
+          && echo "change-preview(git log --color=always \{})+change-preview-label([[ log ]])" \
+          || echo "change-preview(bat --color=always \{})+change-preview-label([[ cat ]])"'
+    ```
+- Renamed `track` action to `track-current` to highlight the difference between the global tracking state set by `--track` and a one-off tracking action
+    - `track` is still available as an alias
+- Added `untrack-current` and `toggle-track-current` actions
+    - `*-current` actions are no-op when the global tracking state is set
+- Bug fixes and minor improvements
+
+0.48.1
+------
+- CTRL-T and ALT-C bindings can be disabled by setting `FZF_CTRL_T_COMMAND` and `FZF_ALT_C_COMMAND` to empty strings respectively when sourcing the script
+    ```sh
+    # bash
+    FZF_CTRL_T_COMMAND= FZF_ALT_C_COMMAND= eval "$(fzf --bash)"
+
+    # zsh
+    FZF_CTRL_T_COMMAND= FZF_ALT_C_COMMAND= eval "$(fzf --zsh)"
+
+    # fish
+    fzf --fish | FZF_CTRL_T_COMMAND= FZF_ALT_C_COMMAND= source
+    ```
+    - Setting the variables after sourcing the script will have no effect
+- Bug fixes
+
+0.48.0
+------
+- Shell integration scripts are now embedded in the fzf binary. This simplifies the distribution, and the users are less likely to have problems caused by using incompatible scripts and binaries.
+    - bash
+      ```sh
+      # Set up fzf key bindings and fuzzy completion
+      eval "$(fzf --bash)"
+      ```
+    - zsh
+      ```sh
+      # Set up fzf key bindings and fuzzy completion
+      eval "$(fzf --zsh)"
+      ```
+    - fish
+      ```fish
+      # Set up fzf key bindings
+      fzf --fish | source
+      ```
+- Added options for customizing the behavior of the built-in walker
+    | Option               | Description                                       | Default              |
+    | ---                  | ---                                               | ---                  |
+    | `--walker=OPTS`      | Walker options (`[file][,dir][,follow][,hidden]`) | `file,follow,hidden` |
+    | `--walker-root=DIR`  | Root directory from which to start walker         | `.`                  |
+    | `--walker-skip=DIRS` | Comma-separated list of directory names to skip   | `.git,node_modules`  |
+    - Examples
+        ```sh
+        # Built-in walker is only used by standalone fzf when $FZF_DEFAULT_COMMAND is not set
+        unset FZF_DEFAULT_COMMAND
+
+        fzf # default: --walker=file,follow,hidden --walker-root=. --walker-skip=.git,node_modules
+        fzf --walker=file,dir,hidden,follow --walker-skip=.git,node_modules,target
+
+        # Walker options in $FZF_DEFAULT_OPTS
+        export FZF_DEFAULT_OPTS="--walker=file,dir,hidden,follow --walker-skip=.git,node_modules,target"
+        fzf
+
+        # Reading from STDIN; --walker is ignored
+        seq 100 | fzf --walker=dir
+
+        # Reading from $FZF_DEFAULT_COMMAND; --walker is ignored
+        export FZF_DEFAULT_COMMAND='seq 100'
+        fzf --walker=dir
+        ```
+- Shell integration scripts have been updated to use the built-in walker with these new options and they are now much faster out of the box.
+
+0.47.0
+------
+- Replaced ["the default find command"][find] with a built-in directory walker to simplify the code and to achieve better performance and consistent behavior across platforms.
+  This doesn't affect you if you have `$FZF_DEFAULT_COMMAND` set.
+    - Breaking changes:
+        - Unlike [the previous "find" command][find], the new traversal code will list hidden files, but hidden directories will still be ignored
+        - No filtering of `devtmpfs` or `proc` types
+        - Traversal is parallelized, so the order of the entries will be different each time
+    - You may wonder why fzf implements directory walker anyway when it's a filter program following the [Unix philosophy][unix].
+      But fzf has had [the walker code for years][walker] to tackle the performance problem on Windows. And I decided to use the same approach on different platforms as well for the benefits listed above.
+    - Built-in walker is using the excellent [charlievieth/fastwalk][fastwalk] library, which easily outperforms its competitors and supports safely following symlinks.
+- Added `$FZF_DEFAULT_OPTS_FILE` to allow managing default options in a file
+    - See [#3618](https://github.com/junegunn/fzf/pull/3618)
+    - Option precedence from lower to higher
+        1. Options read from `$FZF_DEFAULT_OPTS_FILE`
+        1. Options from `$FZF_DEFAULT_OPTS`
+        1. Options from command-line arguments
+- Bug fixes and improvements
+
+[find]: https://github.com/junegunn/fzf/blob/0.46.1/src/constants.go#L60-L64
+[walker]: https://github.com/junegunn/fzf/pull/1847
+[fastwalk]: https://github.com/charlievieth/fastwalk
+[unix]: https://en.wikipedia.org/wiki/Unix_philosophy
+
+0.46.1
+------
+- Bug fixes and improvements
+- Fixed Windows binaries
+- Downgraded Go version to 1.20 to support older versions of Windows
+    - https://tip.golang.org/doc/go1.21#windows
+- Updated [rivo/uniseg](https://github.com/rivo/uniseg) dependency to v0.4.6
+
+0.46.0
+------
+- Added two new events
+    - `result` - triggered when the filtering for the current query is complete and the result list is ready
+    - `resize` - triggered when the terminal size is changed
+- fzf now exports the following environment variables to the child processes
+  | Variable           | Description                                                 |
+  | ---                | ---                                                         |
+  | `FZF_LINES`        | Number of lines fzf takes up excluding padding and margin   |
+  | `FZF_COLUMNS`      | Number of columns fzf takes up excluding padding and margin |
+  | `FZF_TOTAL_COUNT`  | Total number of items                                       |
+  | `FZF_MATCH_COUNT`  | Number of matched items                                     |
+  | `FZF_SELECT_COUNT` | Number of selected items                                    |
+  | `FZF_QUERY`        | Current query string                                        |
+  | `FZF_PROMPT`       | Prompt string                                               |
+  | `FZF_ACTION`       | The name of the last action performed                       |
+  - This allows you to write sophisticated transformations like so
+    ```sh
+    # Script to dynamically resize the preview window
+    transformer='
+      # 1 line for info, another for prompt, and 2 more lines for preview window border
+      lines=$(( FZF_LINES - FZF_MATCH_COUNT - 4 ))
+      if [[ $FZF_MATCH_COUNT -eq 0 ]]; then
+        echo "change-preview-window:hidden"
+      elif [[ $lines -gt 3 ]]; then
+        echo "change-preview-window:$lines"
+      elif [[ $FZF_PREVIEW_LINES -ne 3 ]]; then
+        echo "change-preview-window:3"
+      fi
+    '
+    seq 10000 | fzf --preview 'seq {} 10000' --preview-window up \
+                    --bind "result:transform:$transformer" \
+                    --bind "resize:transform:$transformer"
+    ```
+  - And we're phasing out `{fzf:prompt}` and `{fzf:action}`
+- Changed [mattn/go-runewidth](https://github.com/mattn/go-runewidth) dependency to [rivo/uniseg](https://github.com/rivo/uniseg) for accurate results
+    - Set `--ambidouble` if your terminal displays ambiguous width characters (e.g. box-drawing characters for borders) as 2 columns
+    - `RUNEWIDTH_EASTASIAN=1` is still respected for backward compatibility, but it's recommended that you use this new option instead
+- Bug fixes
+
+0.45.0
+------
+- Added `transform` action to conditionally perform a series of actions
+  ```sh
+  # Disallow selecting an empty line
+  echo -e "1. Hello\n2. Goodbye\n\n3. Exit" |
+    fzf --height '~100%' --reverse --header 'Select one' \
+        --bind 'enter:transform:[[ -n {} ]] && echo accept || echo "change-header:Invalid selection"'
+
+  # Move cursor past the empty line
+  echo -e "1. Hello\n2. Goodbye\n\n3. Exit" |
+    fzf --height '~100%' --reverse --header 'Select one' \
+        --bind 'enter:transform:[[ -n {} ]] && echo accept || echo "change-header:Invalid selection"' \
+        --bind 'focus:transform:[[ -n {} ]] && exit; [[ {fzf:action} =~ up$ ]] && echo up || echo down'
+
+  # A single key binding to toggle between modes
+  fd --type file |
+    fzf --prompt 'Files> ' \
+        --header 'CTRL-T: Switch between Files/Directories' \
+        --bind 'ctrl-t:transform:[[ ! {fzf:prompt} =~ Files ]] &&
+                  echo "change-prompt(Files> )+reload(fd --type file)" ||
+                  echo "change-prompt(Directories> )+reload(fd --type directory)"'
+  ```
+- Added placeholder expressions
+    - `{fzf:action}` - The name of the last action performed
+    - `{fzf:prompt}` - Prompt string (including ANSI color codes)
+    - `{fzf:query}` - Synonym for `{q}`
+- Added support for negative height
+  ```sh
+  # Terminal height minus 1, so you can still see the command line
+  fzf --height=-1
+  ```
+  - This handles a terminal resize better than `--height=$(($(tput lines) - 1))`
+- Added `accept-or-print-query` action that acts like `accept` but prints the
+  current query when there's no match for the query
+  ```sh
+  # You can make CTRL-R paste the current query when there's no match
+  export FZF_CTRL_R_OPTS='--bind enter:accept-or-print-query'
+  ```
+  - Note that there are alternative ways to implement the same strategy
+    ```sh
+    # 'become' is apparently more versatile but it's not available on Windows.
+    export FZF_CTRL_R_OPTS='--bind "enter:become:if [ -z {} ]; then echo {q}; else echo {}; fi"'
+
+    # Using the new 'transform' action
+    export FZF_CTRL_R_OPTS='--bind "enter:transform:[ -z {} ] && echo print-query || echo accept"'
+    ```
+- Added `show-header` and `hide-header` actions
+- Bug fixes
+
+0.44.1
+------
+- Fixed crash when preview window is hidden on `focus` event
+
 0.44.0
 ------
 - (Experimental) Sixel image support in preview window (not available on Windows)
@@ -38,7 +349,7 @@ CHANGELOG
       # --transfer-mode=memory is the fastest option but if you want fzf to be able
       # to redraw the image on terminal resize or on 'change-preview-window',
       # you need to use --transfer-mode=stream.
-      kitty icat --clear --transfer-mode=memory --stdin=no --place=${FZF_PREVIEW_COLUMNS}x${FZF_PREVIEW_LINES}@0x0 {} | sed \$d
+      kitty icat --clear --transfer-mode=memory --unicode-placeholder --stdin=no --place=${FZF_PREVIEW_COLUMNS}x${FZF_PREVIEW_LINES}@0x0 {} | sed \$d
     else
       bat --color=always {}
     fi

Dockerfile

@@ -1,6 +1,6 @@
-FROM --platform=linux/amd64 archlinux
-RUN pacman -Sy && pacman --noconfirm -S awk git tmux zsh fish ruby procps go make gcc
-RUN gem install --no-document -v 5.14.2 minitest
+FROM ubuntu:24.04
+RUN apt-get update -y && apt install -y git make golang zsh fish ruby tmux
+RUN gem install --no-document -v 5.22.3 minitest
 RUN echo '. /usr/share/bash-completion/completions/git' >> ~/.bashrc
 RUN echo '. ~/.bashrc' >> ~/.bash_profile
 
@@ -8,4 +8,5 @@ RUN echo '. ~/.bashrc' >> ~/.bash_profile
 RUN rm -f /etc/bash.bashrc
 COPY . /fzf
 RUN cd /fzf && make install && ./install --all
+ENV LANG C.UTF-8
 CMD tmux new 'set -o pipefail; ruby /fzf/test/test_go.rb | tee out && touch ok' && cat out && [ -e ok ]

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2023 Junegunn Choi
+Copyright (c) 2013-2024 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

Makefile

@@ -1,10 +1,10 @@
 SHELL          := bash
 GO             ?= go
-GOOS           ?= $(word 1, $(subst /, " ", $(word 4, $(shell go version))))
+GOOS           ?= $(shell $(GO) env GOOS)
 
 MAKEFILE       := $(realpath $(lastword $(MAKEFILE_LIST)))
 ROOT_DIR       := $(shell dirname $(MAKEFILE))
-SOURCES        := $(wildcard *.go src/*.go src/*/*.go) $(MAKEFILE)
+SOURCES        := $(wildcard *.go src/*.go src/*/*.go shell/*sh) $(MAKEFILE)
 
 ifdef FZF_VERSION
 VERSION        := $(FZF_VERSION)
@@ -25,7 +25,7 @@ endif
 ifeq ($(REVISION),)
 $(error Not on git repository; cannot determine $$FZF_REVISION)
 endif
-BUILD_FLAGS    := -a -ldflags "-s -w -X main.version=$(VERSION) -X main.revision=$(REVISION)" -tags "$(TAGS)"
+BUILD_FLAGS    := -a -ldflags "-s -w -X main.version=$(VERSION) -X main.revision=$(REVISION)" -tags "$(TAGS)" -trimpath
 
 BINARY32       := fzf-$(GOOS)_386
 BINARY64       := fzf-$(GOOS)_amd64
@@ -89,8 +89,11 @@ bench:
 
 install: bin/fzf
 
+generate:
+	PATH=$(PATH):$(GOPATH)/bin $(GO) generate ./...
+
 build:
-	goreleaser build --rm-dist --snapshot --skip-post-hooks
+	goreleaser build --clean --snapshot --skip=post-hooks
 
 release:
 	# Make sure that the tests pass and the build works
@@ -123,7 +126,7 @@ endif
 	git push origin temp --follow-tags --force
 
 	# Make a GitHub release
-	goreleaser --rm-dist --release-notes tmp/release-note
+	goreleaser --clean --release-notes tmp/release-note
 
 	# Push to master
 	git checkout master
@@ -170,15 +173,15 @@ bin/fzf: target/$(BINARY) | bin
 	cp -f target/$(BINARY) bin/fzf
 
 docker:
-	docker build -t fzf-arch .
-	docker run -it fzf-arch tmux
+	docker build -t fzf-ubuntu .
+	docker run -it fzf-ubuntu tmux
 
 docker-test:
-	docker build -t fzf-arch .
-	docker run -it fzf-arch
+	docker build -t fzf-ubuntu .
+	docker run -it fzf-ubuntu
 
 update:
 	$(GO) get -u
 	$(GO) mod tidy
 
-.PHONY: all build release test bench install clean docker docker-test update
+.PHONY: all generate build release test bench install clean docker docker-test update

README-VIM.md

@@ -238,19 +238,20 @@ call fzf#run({'sink': 'e'})
 ```
 
 We haven't specified the `source`, so this is equivalent to starting fzf on
-command line without standard input pipe; fzf will use find command (or
-`$FZF_DEFAULT_COMMAND` if defined) to list the files under the current
-directory. When you select one, it will open it with the sink, `:e` command.
-If you want to open it in a new tab, you can pass `:tabedit` command instead
-as the sink.
+command line without standard input pipe; fzf will traverse the file system
+under the current directory to get the list of files. (If
+`$FZF_DEFAULT_COMMAND` is set, fzf will use the output of the command
+instead.) When you select one, it will open it with the sink, `:e` command. If
+you want to open it in a new tab, you can pass `:tabedit` command instead as
+the sink.
 
 ```vim
 call fzf#run({'sink': 'tabedit'})
 ```
 
-Instead of using the default find command, you can use any shell command as
-the source. The following example will list the files managed by git. It's
-equivalent to running `git ls-files | fzf` on shell.
+You can use any shell command as the source to generate the list. The
+following example will list the files managed by git. It's equivalent to
+running `git ls-files | fzf` on shell.
 
 ```vim
 call fzf#run({'source': 'git ls-files', 'sink': 'e'})
@@ -489,4 +490,4 @@ autocmd  FileType fzf set laststatus=0 noshowmode noruler
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2023 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi

bin/fzf-preview.sh

@@ -53,7 +53,7 @@ if [[ $KITTY_WINDOW_ID ]]; then
   # 2. The last line of the output is the ANSI reset code without newline.
   #    This confuses fzf and makes it render scroll offset indicator.
   #    So we remove the last line and append the reset code to its previous line.
-  kitty icat --clear --transfer-mode=memory --stdin=no --place="$dim@0x0" "$file" | sed '$d' | sed $'$s/$/\e[m/'
+  kitty icat --clear --transfer-mode=memory --unicode-placeholder --stdin=no --place="$dim@0x0" "$file" | sed '$d' | sed $'$s/$/\e[m/'
 
 # 2. Use chafa with Sixel output
 elif command -v chafa > /dev/null; then

bin/fzf-tmux

@@ -7,7 +7,7 @@ fail() {
   exit 2
 }
 
-fzf="$(command -v fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
+fzf="$(command which fzf)" || fzf="$(dirname "$0")/fzf"
 [[ -x "$fzf" ]] || fail 'fzf executable not found'
 
 args=()
@@ -95,9 +95,9 @@ while [[ $# -gt 0 ]]; do
       elif [[ "$size" =~ %$ ]]; then
         size=${size:0:((${#size}-1))}
         if [[ -n "$swap" ]]; then
-          opt="$opt -p $(( 100 - size ))"
+          opt="$opt -l $(( 100 - size ))%"
         else
-          opt="$opt -p $size"
+          opt="$opt -l $size%"
         fi
       else
         if [[ -n "$swap" ]]; then
@@ -196,8 +196,9 @@ if [[ "$opt" =~ "-E" ]]; then
     exit 2
   fi
 fi
-[[ -n "$FZF_DEFAULT_OPTS"    ]] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
-[[ -n "$FZF_DEFAULT_COMMAND" ]] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
+envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
+envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
+envs="$envs FZF_DEFAULT_OPTS_FILE=$(printf %q "$FZF_DEFAULT_OPTS_FILE")"
 [[ -n "$RUNEWIDTH_EASTASIAN" ]] && envs="$envs RUNEWIDTH_EASTASIAN=$(printf %q "$RUNEWIDTH_EASTASIAN")"
 [[ -n "$BAT_THEME" ]] && envs="$envs BAT_THEME=$(printf %q "$BAT_THEME")"
 echo "$envs;" > "$argsf"

doc/fzf.txt

@@ -1,4 +1,4 @@
-fzf.txt	fzf	Last change: September 17 2023
+fzf.txt	fzf	Last change: February 15 2024
 FZF - TABLE OF CONTENTS                                            *fzf* *fzf-toc*
 ==============================================================================
 
@@ -264,17 +264,18 @@ entry.
     call fzf#run({'sink': 'e'})
 <
 We haven't specified the `source`, so this is equivalent to starting fzf on
-command line without standard input pipe; fzf will use find command (or
-`$FZF_DEFAULT_COMMAND` if defined) to list the files under the current
-directory. When you select one, it will open it with the sink, `:e` command.
-If you want to open it in a new tab, you can pass `:tabedit` command instead
-as the sink.
+command line without standard input pipe; fzf will traverse the file system
+under the current directory to get the list of files. (If
+`$FZF_DEFAULT_COMMAND` is set, fzf will use the output of the command
+instead.) When you select one, it will open it with the sink, `:e` command. If
+you want to open it in a new tab, you can pass `:tabedit` command instead as
+the sink.
 >
     call fzf#run({'sink': 'tabedit'})
 <
-Instead of using the default find command, you can use any shell command as
-the source. The following example will list the files managed by git. It's
-equivalent to running `git ls-files | fzf` on shell.
+You can use any shell command as the source to generate the list. The
+following example will list the files managed by git. It's equivalent to
+running `git ls-files | fzf` on shell.
 >
     call fzf#run({'source': 'git ls-files', 'sink': 'e'})
 <
@@ -417,24 +418,12 @@ TIPS                                                                  *fzf-tips*
 < fzf inside terminal buffer >________________________________________________~
                                                     *fzf-inside-terminal-buffer*
 
-The latest versions of Vim and Neovim include builtin terminal emulator
-(`:terminal`) and fzf will start in a terminal buffer in the following cases:
-
- - On Neovim
- - On GVim
- - On Terminal Vim with a non-default layout
-   - `call fzf#run({'left': '30%'})` or `let g:fzf_layout = {'left': '30%'}`
 
 On the latest versions of Vim and Neovim, fzf will start in a terminal buffer.
 If you find the default ANSI colors to be different, consider configuring the
 colors using `g:terminal_ansi_colors` in regular Vim or `g:terminal_color_x`
 in Neovim.
 
-                   *g:terminal_color_15* *g:terminal_color_14* *g:terminal_color_13*
-*g:terminal_color_12* *g:terminal_color_11* *g:terminal_color_10* *g:terminal_color_9*
-   *g:terminal_color_8* *g:terminal_color_7* *g:terminal_color_6* *g:terminal_color_5*
-   *g:terminal_color_4* *g:terminal_color_3* *g:terminal_color_2* *g:terminal_color_1*
-                                                            *g:terminal_color_0*
 >
     " Terminal colors for seoul256 color scheme
     if has('nvim')
@@ -512,7 +501,7 @@ LICENSE                                                            *fzf-license*
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2023 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 ==============================================================================
 vim:tw=78:sw=2:ts=2:ft=help:norl:nowrap:

go.mod

@@ -1,21 +1,20 @@
 module github.com/junegunn/fzf
 
 require (
-	github.com/gdamore/tcell/v2 v2.5.4
-	github.com/mattn/go-isatty v0.0.17
-	github.com/mattn/go-runewidth v0.0.14
+	github.com/charlievieth/fastwalk v1.0.3
+	github.com/gdamore/tcell/v2 v2.7.4
+	github.com/mattn/go-isatty v0.0.20
 	github.com/mattn/go-shellwords v1.0.12
-	github.com/rivo/uniseg v0.4.4
-	github.com/saracen/walker v0.1.3
-	golang.org/x/sys v0.14.0
-	golang.org/x/term v0.13.0
+	github.com/rivo/uniseg v0.4.7
+	golang.org/x/sys v0.20.0
+	golang.org/x/term v0.20.0
 )
 
 require (
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
-	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 // indirect
-	golang.org/x/text v0.5.0 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	golang.org/x/text v0.14.0 // indirect
 )
 
-go 1.17
+go 1.20

go.sum

@@ -1,48 +1,57 @@
+github.com/charlievieth/fastwalk v1.0.3 h1:eNWFaNPe5srPqQ5yyDbhAf11paeZaHWcihRhpuYFfSg=
+github.com/charlievieth/fastwalk v1.0.3/go.mod h1:JSfglY/gmL/rqsUS1NCsJTocB5n6sSl9ApAqif4CUbs=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
-github.com/gdamore/tcell/v2 v2.5.4 h1:TGU4tSjD3sCL788vFNeJnTdzpNKIw1H5dgLnJRQVv/k=
-github.com/gdamore/tcell/v2 v2.5.4/go.mod h1:dZgRy5v4iMobMEcWNYBtREnDZAT9DYmfqIkrgEMxLyw=
+github.com/gdamore/tcell/v2 v2.7.4 h1:sg6/UnTM9jGpZU+oFYAsDahfchWAFW8Xx2yFinNSAYU=
+github.com/gdamore/tcell/v2 v2.7.4/go.mod h1:dSXtXTSK0VsW1biw65DZLZ2NKr7j0qP/0J7ONmsraWg=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
-github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
-github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
-github.com/mattn/go-runewidth v0.0.14 h1:+xnbZSEeDbOIg5/mE6JF0w6n9duR1l3/WmbinWVwUuU=
-github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-shellwords v1.0.12 h1:M2zGm7EW6UQJvDeQxo4T51eKPurbeFbe8WtebGE2xrk=
 github.com/mattn/go-shellwords v1.0.12/go.mod h1:EZzvwXDESEeg03EKmM+RmDnNOPKG4lLtQsUlTZDWQ8Y=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
-github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
-github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
-github.com/saracen/walker v0.1.3 h1:YtcKKmpRPy6XJTHJ75J2QYXXZYWnZNQxPCVqZSHVV/g=
-github.com/saracen/walker v0.1.3/go.mod h1:FU+7qU8DeQQgSZDmmThMJi93kPkLFgy0oVAcLxurjIk=
+github.com/rivo/uniseg v0.4.3/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 h1:uVc8UZUe6tr40fFVnUP5Oj+veunVezqYl9z7DYw9xzw=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
-golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.13.0 h1:bb+I9cTfFazGW51MZqBVmZy7+JEJMouUHTUSKVQLBek=
-golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.20.0 h1:VnkxpohqXaOBYJtBmEppKUG6mXpi+4O6purfc2+sMhw=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
-golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

install

@@ -2,7 +2,7 @@
 
 set -u
 
-version=0.44.0
+version=0.52.0
 auto_completion=
 key_bindings=
 update_config=2
@@ -115,7 +115,7 @@ link_fzf_in_path() {
 try_curl() {
   command -v curl > /dev/null &&
   if [[ $1 =~ tar.gz$ ]]; then
-    curl -fL $1 | tar -xzf -
+    curl -fL $1 | tar --no-same-owner -xzf -
   else
     local temp=${TMPDIR:-/tmp}/fzf.zip
     curl -fLo "$temp" $1 && unzip -o "$temp" && rm -f "$temp"
@@ -125,7 +125,7 @@ try_curl() {
 try_wget() {
   command -v wget > /dev/null &&
   if [[ $1 =~ tar.gz$ ]]; then
-    wget -O - $1 | tar -xzf -
+    wget -O - $1 | tar --no-same-owner -xzf -
   else
     local temp=${TMPDIR:-/tmp}/fzf.zip
     wget -O "$temp" $1 && unzip -o "$temp" && rm -f "$temp"
@@ -262,6 +262,12 @@ if [[ ! "\$PATH" == *$fzf_base_esc/bin* ]]; then
   PATH="\${PATH:+\${PATH}:}$fzf_base/bin"
 fi
 
+EOF
+
+  if [[ $auto_completion -eq 1 ]] && [[ $key_bindings -eq 1 ]]; then
+    echo "eval \"\$(fzf --$shell)\"" >> "$src"
+  else
+    cat >> "$src" << EOF
 # Auto-completion
 # ---------------
 $fzf_completion
@@ -270,6 +276,7 @@ $fzf_completion
 # ------------
 $fzf_key_bindings
 EOF
+  fi
   echo "OK"
 done
 
@@ -281,18 +288,6 @@ if [[ "$shells" =~ fish ]]; then
   or set --universal fish_user_paths \$fish_user_paths "$fzf_base"/bin
 EOF
   [ $? -eq 0 ] && echo "OK" || echo "Failed"
-
-  mkdir -p "${fish_dir}/functions"
-  fish_binding="${fish_dir}/functions/fzf_key_bindings.fish"
-  if [ $key_bindings -ne 0 ]; then
-    echo -n "Symlink $fish_binding ... "
-    ln -sf "$fzf_base/shell/key-bindings.fish" \
-           "$fish_binding" && echo "OK" || echo "Failed"
-  else
-    echo -n "Removing $fish_binding ... "
-    rm -f "$fish_binding"
-    echo "OK"
-  fi
 fi
 
 append_line() {
@@ -355,12 +350,23 @@ done
 if [ $key_bindings -eq 1 ] && [[ "$shells" =~ fish ]]; then
   bind_file="${fish_dir}/functions/fish_user_key_bindings.fish"
   if [ ! -e "$bind_file" ]; then
+    mkdir -p "${fish_dir}/functions"
     create_file "$bind_file" \
       'function fish_user_key_bindings' \
-      '  fzf_key_bindings' \
+      '  fzf --fish | source' \
       'end'
   else
-    append_line $update_config "fzf_key_bindings" "$bind_file"
+    echo "Check $bind_file:"
+    lno=$(\grep -nF "fzf_key_bindings" "$bind_file" | sed 's/:.*//' | tr '\n' ' ')
+    if [[ -n $lno ]]; then
+      echo "  ** Found 'fzf_key_bindings' in line #$lno"
+      echo "  ** You have to replace the line to 'fzf --fish | source'"
+      echo
+    else
+      echo "  - Clear"
+      echo
+      append_line $update_config "fzf --fish | source" "$bind_file"
+    fi
   fi
 fi
 

install.ps1

@@ -1,4 +1,4 @@
-$version="0.44.0"
+$version="0.52.0"
 
 $fzf_base=Split-Path -Parent $MyInvocation.MyCommand.Definition
 

main.go

@@ -1,14 +1,82 @@
 package main
 
 import (
+	_ "embed"
+	"fmt"
+	"os"
+	"strings"
+
 	fzf "github.com/junegunn/fzf/src"
 	"github.com/junegunn/fzf/src/protector"
 )
 
-var version string = "0.44"
-var revision string = "devel"
+var version = "0.52"
+var revision = "devel"
+
+//go:embed shell/key-bindings.bash
+var bashKeyBindings []byte
+
+//go:embed shell/completion.bash
+var bashCompletion []byte
+
+//go:embed shell/key-bindings.zsh
+var zshKeyBindings []byte
+
+//go:embed shell/completion.zsh
+var zshCompletion []byte
+
+//go:embed shell/key-bindings.fish
+var fishKeyBindings []byte
+
+func printScript(label string, content []byte) {
+	fmt.Println("### " + label + " ###")
+	fmt.Println(strings.TrimSpace(string(content)))
+	fmt.Println("### end: " + label + " ###")
+}
+
+func exit(code int, err error) {
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err.Error())
+	}
+	os.Exit(code)
+}
 
 func main() {
 	protector.Protect()
-	fzf.Run(fzf.ParseOptions(), version, revision)
+
+	options, err := fzf.ParseOptions(true, os.Args[1:])
+	if err != nil {
+		exit(fzf.ExitError, err)
+		return
+	}
+	if options.Bash {
+		printScript("key-bindings.bash", bashKeyBindings)
+		printScript("completion.bash", bashCompletion)
+		return
+	}
+	if options.Zsh {
+		printScript("key-bindings.zsh", zshKeyBindings)
+		printScript("completion.zsh", zshCompletion)
+		return
+	}
+	if options.Fish {
+		printScript("key-bindings.fish", fishKeyBindings)
+		fmt.Println("fzf_key_bindings")
+		return
+	}
+	if options.Help {
+		fmt.Print(fzf.Usage)
+		return
+	}
+	if options.Version {
+		if len(revision) > 0 {
+			fmt.Printf("%s (%s)\n", version, revision)
+		} else {
+			fmt.Println(version)
+		}
+		return
+	}
+
+	code, err := fzf.Run(options)
+	exit(code, err)
 }

man/man1/fzf-tmux.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2013-2023 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf-tmux 1 "Nov 2023" "fzf 0.44.0" "fzf-tmux - open fzf in tmux split pane"
+.TH fzf-tmux 1 "May 2024" "fzf 0.52.0" "fzf-tmux - open fzf in tmux split pane"
 
 .SH NAME
 fzf-tmux - open fzf in tmux split pane

man/man1/fzf.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2013-2023 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf 1 "Nov 2023" "fzf 0.44.0" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "May 2024" "fzf 0.52.0" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -33,6 +33,10 @@ fzf [options]
 fzf is a general-purpose command-line fuzzy finder.
 
 .SH OPTIONS
+.SS Note
+.TP
+Most long options have the opposite version with \fB--no-\fR prefix.
+
 .SS Search mode
 .TP
 .B "-x, --extended"
@@ -187,14 +191,26 @@ actions are affected:
 \fBkill-word\fR
 .TP
 .BI "--jump-labels=" "CHARS"
-Label characters for \fBjump\fR and \fBjump-accept\fR
+Label characters for \fBjump\fR mode.
 .SS Layout
 .TP
 .BI "--height=" "[~]HEIGHT[%]"
 Display fzf window below the cursor with the given height instead of using
-the full screen. When prefixed with \fB~\fR, fzf will automatically determine
-the height in the range according to the input size. Note that adaptive height
-is not compatible with top/bottom margin and padding given in percent size.
+the full screen.
+
+If a negative value is specified, the height is calculated as the terminal
+height minus the given value.
+
+  fzf --height=-1
+
+When prefixed with \fB~\fR, fzf will automatically determine the height in the
+range according to the input size. Note that adaptive height is not compatible
+with top/bottom margin and padding given in percent size. It is also not
+compatible with a negative height value.
+
+  # Will not take up 100% of the screen
+  seq 5 | fzf --height=~100%
+
 .TP
 .BI "--min-height=" "HEIGHT"
 Minimum height when \fB--height\fR is given in percent (default: 10).
@@ -248,9 +264,8 @@ Draw border around the finder
 .br
 
 If you use a terminal emulator where each box-drawing character takes
-2 columns, try setting \fBRUNEWIDTH_EASTASIAN\fR environment variable to
-\fB0\fR or \fB1\fR. If the border is still not properly rendered, set
-\fB--no-unicode\fR.
+2 columns, try setting \fB--ambidouble\fR. If the border is still not properly
+rendered, set \fB--no-unicode\fR.
 
 .TP
 .BI "--border-label" [=LABEL]
@@ -301,6 +316,11 @@ the label. Label is printed on the top border line by default, add
 Use ASCII characters instead of Unicode drawing characters to draw borders,
 the spinner and the horizontal separator.
 
+.TP
+.B "--ambidouble"
+Set this option if your terminal displays ambiguous width characters (e.g.
+box-drawing characters for borders) as 2 columns.
+
 .TP
 .BI "--margin=" MARGIN
 Comma-separated expression for margins around the finder.
@@ -352,20 +372,21 @@ e.g.
 
 .TP
 .BI "--info=" "STYLE"
-Determines the display style of finder info (match counters).
+Determines the display style of the finder info. (e.g. match counter, loading indicator, etc.)
 
+.BR default "              On the left end of the horizontal separator"
 .br
-.BR default "          Display on the next line to the prompt"
+.BR right "                On the right end of the horizontal separator"
 .br
-.BR right "            Display on the right end of the next line to the prompt"
+.BR hidden "               Do not display finder info"
 .br
-.BR inline "           Display on the same line with the default separator ' < '"
+.BR inline "               After the prompt with the default prefix ' < '"
 .br
-.BR inline:SEPARATOR " Display on the same line with a non-default separator"
+.BR inline:PREFIX "        After the prompt with a non-default prefix"
 .br
-.BR inline-right "     Display on the right end of the same line
+.BR inline-right "         On the right end of the prompt line"
 .br
-.BR hidden "           Do not display finder info"
+.BR inline-right:PREFIX "  On the right end of the prompt line with a custom prefix"
 .br
 
 .TP
@@ -443,14 +464,17 @@ color mappings.
 
 .B COLOR NAMES:
     \fBfg                  \fRText
+      \fBselected-fg       \fRSelected line text
       \fBpreview-fg        \fRPreview window text
     \fBbg                  \fRBackground
+      \fBselected-bg       \fRSelected line background
       \fBpreview-bg        \fRPreview window background
     \fBhl                  \fRHighlighted substrings
-    \fBfg+                 \fRText (current line)
-    \fBbg+                 \fRBackground (current line)
+      \fBselected-hl       \fRHighlighted substrings in the selected line
+    \fBcurrent-fg (fg+)    \fRText (current line)
+    \fBcurrent-bg (bg+)    \fRBackground (current line)
       \fBgutter            \fRGutter on the left
-    \fBhl+                 \fRHighlighted substrings (current line)
+    \fBcurrent-hl (hl+)    \fRHighlighted substrings (current line)
     \fBquery               \fRQuery string
       \fBdisabled          \fRQuery string when search is disabled (\fB--disabled\fR)
     \fBinfo                \fRInfo line (match counters)
@@ -513,6 +537,9 @@ color mappings.
          --color='pointer:#E12672,marker:#E17899,prompt:#98BEDE,hl+:#98BC99'\fR
 .RE
 .TP
+.B "--highlight-line"
+Highlight the whole current line
+.TP
 .B "--no-bold"
 Do not use bold text
 .TP
@@ -562,10 +589,6 @@ e.g.
 When using a field index expression, leading and trailing whitespace is stripped
 from the replacement string. To preserve the whitespace, use the \fBs\fR flag.
 
-Also, \fB{q}\fR is replaced to the current query string, and \fB{n}\fR is
-replaced to zero-based ordinal index of the line. Use \fB{+n}\fR if you want
-all index numbers when multiple lines are selected.
-
 A placeholder expression with \fBf\fR flag is replaced to the path of
 a temporary file that holds the evaluated list. This is useful when you
 multi-select a large number of items and the length of the evaluated string may
@@ -577,6 +600,14 @@ e.g.
      seq 100000 | fzf --multi --bind ctrl-a:select-all \\
                       --preview "awk '{sum+=\\$1} END {print sum}' {+f}"\fR
 
+Also,
+
+* \fB{q}\fR (or \fB{fzf:query}\fR) is replaced to the current query string
+.br
+* \fB{n}\fR is replaced to the zero-based ordinal index of the current item.
+  Use \fB{+n}\fR if you want all index numbers when multiple lines are selected.
+.br
+
 Note that you can escape a placeholder pattern by prepending a backslash.
 
 Preview window will be updated even when there is no match for the current
@@ -600,7 +631,7 @@ The following example uses https://github.com/junegunn/fzf/blob/master/bin/fzf-p
 script to render an image using either of the protocols inside the preview window.
 
 e.g.
-      \fBfzf --preview='fzf-preview.sh {}'
+      \fBfzf --preview='fzf-preview.sh {}'\fR
 
 .RE
 
@@ -787,12 +818,22 @@ e.g.
 .TP
 .B "--sync"
 Synchronous search for multi-staged filtering. If specified, fzf will launch
-ncurses finder only after the input stream is complete.
+the finder only after the input stream is complete.
 
 .RS
 e.g. \fBfzf --multi | fzf --sync\fR
 .RE
 .TP
+.B "--with-shell=STR"
+Shell command and flags to start child processes with. On *nix Systems, the
+default value is \fB$SHELL -c\fR if \fB$SHELL\fR is set, otherwise \fBsh -c\fR.
+On Windows, the default value is \fBcmd /s/c\fR when \fB$SHELL\fR is not
+set.
+
+.RS
+e.g. \fBgem list | fzf --with-shell 'ruby -e' --preview 'pp Gem::Specification.find_by_name({1})'\fR
+.RE
+.TP
 .B "--listen[=[ADDR:]PORT]" "--listen-unsafe[=[ADDR:]PORT]"
 Start HTTP server and listen on the given address. It allows external processes
 to send actions to perform via POST method.
@@ -811,12 +852,14 @@ e.g.
      \fB# Start HTTP server on port 6266
      fzf --listen 6266
 
-     # Get program state in JSON format (experimental)
-     curl localhost:6266
-
      # Send action to the server
      curl -XPOST localhost:6266 -d 'reload(seq 100)+change-prompt(hundred> )'
 
+     # Get program state in JSON format (experimental)
+     # * Make sure NOT to access this endpoint from execute/transform actions
+     #   as it will result in a timeout
+     curl localhost:6266
+
      # Start HTTP server on port 6266 with remote connections allowed
      # * Listening on non-localhost address requires using an API key
      export FZF_API_KEY="$(head -c 32 /dev/urandom | base64)"
@@ -832,8 +875,49 @@ e.g.
 .B "--version"
 Display version information and exit
 
+.SS Directory traversal
 .TP
-Note that most options have the opposite versions with \fB--no-\fR prefix.
+.B "--walker=[file][,dir][,follow][,hidden]"
+Determines the behavior of the built-in directory walker that is used when
+\fB$FZF_DEFAULT_COMMAND\fR is not set. The default value is \fBfile,follow,hidden\fR.
+
+* \fBfile\fR: Include files in the search result
+.br
+* \fBdir\fR: Include directories in the search result
+.br
+* \fBhidden\fR: Include and follow hidden directories
+.br
+* \fBfollow\fR: Follow symbolic links
+.br
+
+.TP
+.B "--walker-root=DIR"
+The root directory from which to start the built-in directory walker.
+The default value is the current working directory.
+
+.TP
+.B "--walker-skip=DIRS"
+Comma-separated list of directory names to skip during the directory walk.
+The default value is \fB.git,node_modules\fR.
+
+.SS Shell integration
+.TP
+.B "--bash"
+Print script to set up Bash shell integration
+
+e.g. \fBeval "$(fzf --bash)"\fR
+
+.TP
+.B "--zsh"
+Print script to set up Zsh shell integration
+
+e.g. \fBeval "$(fzf --zsh)"\fR
+
+.TP
+.B "--fish"
+Print script to set up Fish shell integration
+
+e.g. \fBfzf --fish | source\fR
 
 .SH ENVIRONMENT VARIABLES
 .TP
@@ -843,7 +927,14 @@ with \fB$SHELL -c\fR if \fBSHELL\fR is set, otherwise with \fBsh -c\fR, so in
 this case make sure that the command is POSIX-compliant.
 .TP
 .B FZF_DEFAULT_OPTS
-Default options. e.g. \fBexport FZF_DEFAULT_OPTS="--extended --cycle"\fR
+Default options.
+.br
+e.g. \fBexport FZF_DEFAULT_OPTS="--layout=reverse --border --cycle"\fR
+.TP
+.B FZF_DEFAULT_OPTS_FILE
+The location of the file that contains the default options.
+.br
+e.g. \fBexport FZF_DEFAULT_OPTS_FILE=~/.fzfrc\fR
 .TP
 .B FZF_API_KEY
 Can be used to require an API key when using \fB--listen\fR option. If not set,
@@ -857,6 +948,8 @@ you need to protect against DNS rebinding and privilege escalation attacks.
 .br
 .BR 2 "      Error"
 .br
+.BR 127 "    Invalid shell command for \fBbecome\fR action"
+.br
 .BR 130 "    Interrupted with \fBCTRL-C\fR or \fBESC\fR"
 
 .SH FIELD INDEX EXPRESSION
@@ -883,6 +976,47 @@ of field index expressions.
 .BR .. "     All the fields"
 .br
 
+.SH ENVIRONMENT VARIABLES EXPORTED TO CHILD PROCESSES
+
+fzf exports the following environment variables to its child processes.
+
+.BR FZF_LINES "           Number of lines fzf takes up excluding padding and margin"
+.br
+.BR FZF_COLUMNS "         Number of columns fzf takes up excluding padding and margin"
+.br
+.BR FZF_TOTAL_COUNT "     Total number of items"
+.br
+.BR FZF_MATCH_COUNT "     Number of matched items"
+.br
+.BR FZF_SELECT_COUNT "    Number of selected items"
+.br
+.BR FZF_POS "             Vertical position of the cursor in the list starting from 1"
+.br
+.BR FZF_QUERY "           Current query string"
+.br
+.BR FZF_PROMPT "          Prompt string"
+.br
+.BR FZF_PREVIEW_LABEL "   Preview label string"
+.br
+.BR FZF_BORDER_LABEL "    Border label string"
+.br
+.BR FZF_ACTION "          The name of the last action performed"
+.br
+.BR FZF_KEY "             The name of the last key pressed"
+.br
+.BR FZF_PORT "            Port number when --listen option is used"
+.br
+
+The following variables are additionally exported to the preview commands.
+
+.BR FZF_PREVIEW_TOP "     Top position of the preview window"
+.br
+.BR FZF_PREVIEW_LEFT "    Left position of the preview window"
+.br
+.BR FZF_PREVIEW_LINES "   Number of lines in the preview window"
+.br
+.BR FZF_PREVIEW_COLUMNS " Number of columns in the preview window"
+
 .SH EXTENDED SEARCH MODE
 
 Unless specified otherwise, fzf will start in "extended-search mode". In this
@@ -940,21 +1074,21 @@ e.g.
 .br
 \fIctrl-]\fR
 .br
-\fIctrl-^\fR      (\fIctrl-6\fR)
+\fIctrl-^\fR         (\fIctrl-6\fR)
 .br
-\fIctrl-/\fR      (\fIctrl-_\fR)
+\fIctrl-/\fR         (\fIctrl-_\fR)
 .br
 \fIctrl-alt-[a-z]\fR
 .br
-\fIalt-[*]\fR     (Any case-sensitive single character is allowed)
+\fIalt-[*]\fR        (Any case-sensitive single character is allowed)
 .br
 \fIf[1-12]\fR
 .br
-\fIenter\fR       (\fIreturn\fR \fIctrl-m\fR)
+\fIenter\fR          (\fIreturn\fR \fIctrl-m\fR)
 .br
 \fIspace\fR
 .br
-\fIbspace\fR      (\fIbs\fR)
+\fIbackspace\fR      (\fIbspace\fR \fIbs\fR)
 .br
 \fIalt-up\fR
 .br
@@ -968,15 +1102,15 @@ e.g.
 .br
 \fIalt-space\fR
 .br
-\fIalt-bspace\fR  (\fIalt-bs\fR)
+\fIalt-backspace\fR  (\fIalt-bspace\fR \fIalt-bs\fR)
 .br
 \fItab\fR
 .br
-\fIbtab\fR        (\fIshift-tab\fR)
+\fIshift-tab\fR      (\fIbtab\fR)
 .br
 \fIesc\fR
 .br
-\fIdel\fR
+\fIdelete\fR         (\fIdel\fR)
 .br
 \fIup\fR
 .br
@@ -992,9 +1126,9 @@ e.g.
 .br
 \fIinsert\fR
 .br
-\fIpgup\fR        (\fIpage-up\fR)
+\fIpage-up\fR        (\fIpgup\fR)
 .br
-\fIpgdn\fR        (\fIpage-down\fR)
+\fIpage-down\fR      (\fIpgdn\fR)
 .br
 \fIshift-up\fR
 .br
@@ -1048,6 +1182,7 @@ e.g.
      \fB# Move cursor to the last item and select all items
      seq 1000 | fzf --multi --sync --bind start:last+select-all\fR
 .RE
+
 \fIload\fR
 .RS
 Triggered when the input stream is complete and the initial processing of the
@@ -1057,6 +1192,24 @@ e.g.
      \fB# Change the prompt to "loaded" when the input stream is complete
      (seq 10; sleep 1; seq 11 20) | fzf --prompt 'Loading> ' --bind 'load:change-prompt:Loaded> '\fR
 .RE
+
+\fIresize\fR
+.RS
+Triggered when the terminal size is changed.
+
+e.g.
+     \fBfzf --bind 'resize:transform-header:echo Resized: ${FZF_COLUMNS}x${FZF_LINES}'\fR
+.RE
+
+\fIresult\fR
+.RS
+Triggered when the filtering for the current query is complete and the result list is ready.
+
+e.g.
+     \fB# Put the cursor on the second item when the query string is empty
+     # * Note that you can't use 'change' event in this case because the second position may not be available
+     fzf --sync --bind 'result:transform:[[ -z {fzf:query} ]] && echo "pos(2)"'\fR
+.RE
 \fIchange\fR
 .RS
 Triggered whenever the query string is changed
@@ -1081,6 +1234,7 @@ e.g.
      # Beware not to introduce an infinite loop
      seq 10 | fzf --bind 'focus:up' --cycle\fR
 .RE
+
 \fIone\fR
 .RS
 Triggered when there's only one match. \fBone:accept\fR binding is comparable
@@ -1092,6 +1246,7 @@ e.g.
      \fB# Automatically select the only match
      seq 10 | fzf --bind one:accept\fR
 .RE
+
 \fIzero\fR
 .RS
 Triggered when there's no match. \fBzero:abort\fR binding is comparable to
@@ -1113,6 +1268,31 @@ e.g.
      \fBfzf --bind backward-eof:abort\fR
 .RE
 
+\fIjump\fR
+.RS
+Triggered when successfully jumped to the target item in \fBjump\fR mode.
+
+e.g.
+     \fBfzf --bind space:jump,jump:accept\fR
+.RE
+
+\fIjump-cancel\fR
+.RS
+Triggered when \fBjump\fR mode is cancelled.
+
+e.g.
+     \fBfzf --bind space:jump,jump:accept,jump-cancel:abort\fR
+.RE
+
+\fIclick-header\fR
+.RS
+Triggered when a mouse click occurs within the header. Sets \fBFZF_CLICK_HEADER_LINE\fR and \fBFZF_CLICK_HEADER_COLUMN\fR environment variables starting from 1.
+
+e.g.
+     \fBprintf "head1\\nhead2" | fzf --header-lines=2 --bind 'click-header:transform-prompt:printf ${FZF_CLICK_HEADER_LINE}x${FZF_CLICK_HEADER_COLUMN}'\fR
+
+.RE
+
 .SS AVAILABLE ACTIONS:
 A key or an event can be bound to one or more of the following actions.
 
@@ -1120,6 +1300,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBabort\fR                        \fIctrl-c  ctrl-g  ctrl-q  esc\fR
     \fBaccept\fR                       \fIenter   double-click\fR
     \fBaccept-non-empty\fR             (same as \fBaccept\fR except that it prevents fzf from exiting without selection)
+    \fBaccept-or-print-query\fR        (same as \fBaccept\fR except that it prints the query when there's no match)
     \fBbackward-char\fR                \fIctrl-b  left\fR
     \fBbackward-delete-char\fR         \fIctrl-h  bspace\fR
     \fBbackward-delete-char/eof\fR     (same as \fBbackward-delete-char\fR except aborts fzf if query is empty)
@@ -1130,6 +1311,8 @@ A key or an event can be bound to one or more of the following actions.
     \fBcancel\fR                       (clear query string if not empty, abort fzf otherwise)
     \fBchange-border-label(...)\fR     (change \fB--border-label\fR to the given string)
     \fBchange-header(...)\fR           (change header to the given string; doesn't affect \fB--header-lines\fR)
+    \fBchange-multi\fR                 (enable multi-select mode with no limit)
+    \fBchange-multi(...)\fR            (enable multi-select mode with a limit or disable it with 0)
     \fBchange-preview(...)\fR          (change \fB--preview\fR option)
     \fBchange-preview-label(...)\fR    (change \fB--preview-label\fR to the given string)
     \fBchange-preview-window(...)\fR   (change \fB--preview-window\fR option; rotate through the multiple option sets separated by '|')
@@ -1154,7 +1337,6 @@ A key or an event can be bound to one or more of the following actions.
     \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
     \fBlast\fR                         (move to the last match; same as \fBpos(-1)\fR)
@@ -1164,6 +1346,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBpage-up\fR                      \fIpgup\fR
     \fBhalf-page-down\fR
     \fBhalf-page-up\fR
+    \fBhide-header\fR
     \fBhide-preview\fR
     \fBoffset-down\fR                  (similar to CTRL-E of Vim)
     \fBoffset-up\fR                    (similar to CTRL-Y of Vim)
@@ -1189,6 +1372,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBreplace-query\fR                (replace query string with the current selection)
     \fBselect\fR
     \fBselect-all\fR                   (select all matches)
+    \fBshow-header\fR
     \fBshow-preview\fR
     \fBtoggle\fR                       (\fIright-click\fR)
     \fBtoggle-all\fR                   (toggle all matches)
@@ -1200,9 +1384,11 @@ A key or an event can be bound to one or more of the following actions.
     \fBtoggle-preview-wrap\fR
     \fBtoggle-search\fR                (toggle search functionality)
     \fBtoggle-sort\fR
-    \fBtoggle-track\fR
+    \fBtoggle-track\fR                 (toggle global tracking option (\fB--track\fR))
+    \fBtoggle-track-current\fR         (toggle tracking of the current item)
     \fBtoggle+up\fR                    \fIbtab    (shift-tab)\fR
-    \fBtrack\fR                        (track the current item; automatically disabled if focus changes)
+    \fBtrack-current\fR                (track the current item; automatically disabled if focus changes)
+    \fBtransform(...)\fR               (transform states using the output of an external command)
     \fBtransform-border-label(...)\fR  (transform border label using an external command)
     \fBtransform-header(...)\fR        (transform header using an external command)
     \fBtransform-preview-label(...)\fR (transform preview label using an external command)
@@ -1211,6 +1397,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBunbind(...)\fR                  (unbind bindings)
     \fBunix-line-discard\fR            \fIctrl-u\fR
     \fBunix-word-rubout\fR             \fIctrl-w\fR
+    \fBuntrack-current\fR              (stop tracking the current item; no-op if global tracking is enabled)
     \fBup\fR                           \fIctrl-k  ctrl-p  up\fR
     \fByank\fR                         \fIctrl-y\fR
 
@@ -1283,8 +1470,6 @@ call.
 
     \fBfzf --bind "enter:become(vim {})"\fR
 
-\fBbecome(...)\fR is not supported on Windows.
-
 .SS RELOAD INPUT
 
 \fBreload(...)\fR action is used to dynamically update the input list
@@ -1315,6 +1500,28 @@ e.g.
      \fB# You can still filter and select entries from the initial list for 3 seconds
      seq 100 | fzf --bind 'load:reload-sync(sleep 3; seq 1000)+unbind(load)'\fR
 
+.SS TRANSFORM ACTIONS
+
+Actions with \fBtransform-\fR prefix are used to transform the states of fzf
+using the output of an external command. The output of these commands are
+expected to be a single line of text.
+
+e.g.
+    \fBfzf --bind 'focus:transform-header:file --brief {}'\fR
+
+\fBtransform(...)\fR action runs an external command that should print a series
+of actions to be performed. The output should be in the same format as the
+payload of HTTP POST request to the \fB--listen\fR server.
+
+e.g.
+    \fB# Disallow selecting an empty line
+    echo -e "1. Hello\\n2. Goodbye\\n\\n3. Exit" |
+      fzf --height '~100%' --reverse --header 'Select one' \\
+          --bind 'enter:transform:[[ -n {} ]] &&
+                    echo accept ||
+                    echo "change-header:Invalid selection"'
+    \fR
+
 .SS PREVIEW BINDING
 
 With \fBpreview(...)\fR action, you can specify multiple different preview

plugin/fzf.vim

@@ -1,4 +1,4 @@
-" Copyright (c) 2013-2023 Junegunn Choi
+" Copyright (c) 2013-2024 Junegunn Choi
 "
 " MIT License
 "
@@ -59,12 +59,9 @@ if s:is_win
     return iconv(a:str, &encoding, 'cp'.s:codepage)
   endfunction
   function! s:wrap_cmds(cmds)
-    return map([
-      \ '@echo off',
-      \ 'setlocal enabledelayedexpansion']
+    return map(['@echo off']
     \ + (has('gui_running') ? ['set TERM= > nul'] : [])
-    \ + (type(a:cmds) == type([]) ? a:cmds : [a:cmds])
-    \ + ['endlocal'],
+    \ + (type(a:cmds) == type([]) ? a:cmds : [a:cmds]),
     \ '<SID>enc_to_cp(v:val."\r")')
   endfunction
 else
@@ -84,11 +81,21 @@ else
 endif
 
 function! s:shellesc_cmd(arg)
-  let escaped = substitute(a:arg, '[&|<>()@^]', '^&', 'g')
-  let escaped = substitute(escaped, '%', '%%', 'g')
-  let escaped = substitute(escaped, '"', '\\^&', 'g')
-  let escaped = substitute(escaped, '\(\\\+\)\(\\^\)', '\1\1\2', 'g')
-  return '^"'.substitute(escaped, '\(\\\+\)$', '\1\1', '').'^"'
+  let e = '"'
+  let slashes = 0
+  for c in split(a:arg, '\zs')
+    if c ==# '\'
+      let slashes += 1
+    elseif c ==# '"'
+      let e .= repeat('\', slashes + 1)
+      let slashes = 0
+    else
+      let slashes = 0
+    endif
+    let e .= c
+  endfor
+  let e .= repeat('\', slashes) .'"'
+  return e
 endfunction
 
 function! fzf#shellescape(arg, ...)
@@ -501,19 +508,19 @@ try
   endif
 
   if has_key(dict, 'source')
-    let source = remove(dict, 'source')
+    let source = dict.source
     let type = type(source)
     if type == 1
-      let source_command = source
+      let prefix = '('.source.')|'
     elseif type == 3
       let temps.input = s:fzf_tempname()
       call s:writefile(source, temps.input)
-      let source_command = (s:is_win ? 'type ' : 'cat ').fzf#shellescape(temps.input)
+      let prefix = (s:is_win ? 'type ' : 'command cat ').fzf#shellescape(temps.input).'|'
     else
       throw 'Invalid source type'
     endif
   else
-    let source_command = ''
+    let prefix = ''
   endif
 
   let prefer_tmux = get(g:, 'fzf_prefer_tmux', 0) || has_key(dict, 'tmux')
@@ -537,11 +544,7 @@ try
   endif
   " Respect --border option given in $FZF_DEFAULT_OPTS and 'options'
   let optstr = join([s:border_opt(get(dict, 'window', 0)), s:extract_option($FZF_DEFAULT_OPTS, 'border'), optstr])
-  let prev_default_command = $FZF_DEFAULT_COMMAND
-  if len(source_command)
-    let $FZF_DEFAULT_COMMAND = source_command
-  endif
-  let command = (use_tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
+  let command = prefix.(use_tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
 
   if use_term
     return s:execute_term(dict, command, temps)
@@ -552,14 +555,6 @@ try
   call s:callback(dict, lines)
   return lines
 finally
-  if exists('source_command') && len(source_command)
-    if len(prev_default_command)
-      let $FZF_DEFAULT_COMMAND = prev_default_command
-    else
-      let $FZF_DEFAULT_COMMAND = ''
-      silent! execute 'unlet $FZF_DEFAULT_COMMAND'
-    endif
-  endif
   let [&shell, &shellslash, &shellcmdflag, &shellxquote] = [shell, shellslash, shellcmdflag, shellxquote]
 endtry
 endfunction
@@ -589,8 +584,8 @@ function! s:fzf_tmux(dict)
       endif
     endfor
   endif
-  return printf('LINES=%d COLUMNS=%d %s %s - --',
-    \ &lines, &columns, fzf#shellescape(s:fzf_tmux), size)
+  return printf('LINES=%d COLUMNS=%d %s %s %s --',
+    \ &lines, &columns, fzf#shellescape(s:fzf_tmux), size, (has_key(a:dict, 'source') ? '' : '-'))
 endfunction
 
 function! s:splittable(dict)
@@ -720,7 +715,8 @@ function! s:execute(dict, command, use_height, temps) abort
     let a:temps.shellscript = shellscript
   endif
   if a:use_height
-    call system(printf('tput cup %d > /dev/tty; tput cnorm > /dev/tty; %s < /dev/tty 2> /dev/tty', &lines, command))
+    let stdin = has_key(a:dict, 'source') ? '' : '< /dev/tty'
+    call system(printf('tput cup %d > /dev/tty; tput cnorm > /dev/tty; %s %s 2> /dev/tty', &lines, command, stdin))
   else
     execute 'silent !'.command
   endif

shell/completion.bash

@@ -4,37 +4,44 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/ completion.bash
 #
-# - $FZF_TMUX               (default: 0)
-# - $FZF_TMUX_OPTS          (default: empty)
-# - $FZF_COMPLETION_TRIGGER (default: '**')
-# - $FZF_COMPLETION_OPTS    (default: empty)
+# - $FZF_TMUX                 (default: 0)
+# - $FZF_TMUX_OPTS            (default: empty)
+# - $FZF_COMPLETION_TRIGGER   (default: '**')
+# - $FZF_COMPLETION_OPTS      (default: empty)
+# - $FZF_COMPLETION_PATH_OPTS (default: empty)
+# - $FZF_COMPLETION_DIR_OPTS  (default: empty)
 
-[[ $- =~ i ]] || return 0
+if [[ $- =~ i ]]; then
 
 
 # To use custom commands instead of find, override _fzf_compgen_{path,dir}
-if ! declare -F _fzf_compgen_path > /dev/null; then
-  _fzf_compgen_path() {
-    echo "$1"
-    command find -L "$1" \
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
-      -a -not -path "$1" -print 2> /dev/null | command sed 's@^\./@@'
-  }
-fi
-
-if ! declare -F _fzf_compgen_dir > /dev/null; then
-  _fzf_compgen_dir() {
-    command find -L "$1" \
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
-      -a -not -path "$1" -print 2> /dev/null | command sed 's@^\./@@'
-  }
-fi
+#
+#   _fzf_compgen_path() {
+#     echo "$1"
+#     command find -L "$1" \
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
+#       -a -not -path "$1" -print 2> /dev/null | command sed 's@^\./@@'
+#   }
+#
+#   _fzf_compgen_dir() {
+#     command find -L "$1" \
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
+#       -a -not -path "$1" -print 2> /dev/null | command sed 's@^\./@@'
+#   }
 
 ###########################################################
 
 # To redraw line after fzf closes (printf '\e[5n')
 bind '"\e[0n": redraw-current-line' 2> /dev/null
 
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
+
 __fzf_comprun() {
   if [[ "$(type -t _fzf_comprun 2>&1)" = function ]]; then
     _fzf_comprun "$@"
@@ -63,6 +70,31 @@ __fzf_orig_completion() {
   done
 }
 
+# @param $1 cmd - Command name for which the original completion is searched
+# @var[out] REPLY - Original function name is returned
+__fzf_orig_completion_get_orig_func() {
+  local cmd orig_var orig
+  cmd=$1
+  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
+  orig="${!orig_var-}"
+  REPLY="${orig##*#}"
+  [[ $REPLY ]] && type "$REPLY" &> /dev/null
+}
+
+# @param $1 cmd - Command name for which the original completion is searched
+# @param $2 func - Fzf's completion function to replace the original function
+# @var[out] REPLY - Completion setting is returned as a string to "eval"
+__fzf_orig_completion_instantiate() {
+  local cmd func orig_var orig
+  cmd=$1
+  func=$2
+  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
+  orig="${!orig_var-}"
+  orig="${orig%#*}"
+  [[ $orig == *' %s '* ]] || return 1
+  printf -v REPLY "$orig" "$func"
+}
+
 _fzf_opts_completion() {
   local cur prev opts
   COMPREPLY=()
@@ -70,128 +102,77 @@ _fzf_opts_completion() {
   prev="${COMP_WORDS[COMP_CWORD-1]}"
   opts="
     -h --help
-    -x --extended
     -e --exact
-    --extended-exact
     +x --no-extended
-    +e --no-exact
     -q --query
     -f --filter
     --literal
-    --no-literal
-    --algo
     --scheme
     --expect
-    --no-expect
-    --enabled --no-phony
-    --disabled --phony
+    --disabled
     --tiebreak
     --bind
     --color
-    --toggle-sort
     -d --delimiter
     -n --nth
     --with-nth
-    -s --sort
     +s --no-sort
     --track
-    --no-track
     --tac
-    --no-tac
     -i
     +i
     -m --multi
-    +m --no-multi
     --ansi
-    --no-ansi
     --no-mouse
     +c --no-color
-    +2 --no-256
-    --black
-    --no-black
-    --bold
     --no-bold
     --layout
     --reverse
-    --no-reverse
     --cycle
-    --no-cycle
     --keep-right
-    --no-keep-right
-    --hscroll
     --no-hscroll
     --hscroll-off
     --scroll-off
     --filepath-word
-    --no-filepath-word
     --info
-    --no-info
-    --inline-info
-    --no-inline-info
     --separator
     --no-separator
-    --scrollbar
     --no-scrollbar
     --jump-labels
     -1 --select-1
-    +1 --no-select-1
     -0 --exit-0
-    +0 --no-exit-0
     --read0
-    --no-read0
     --print0
-    --no-print0
     --print-query
-    --no-print-query
     --prompt
     --pointer
     --marker
     --sync
-    --no-sync
-    --async
-    --no-history
     --history
     --history-size
-    --no-header
-    --no-header-lines
     --header
     --header-lines
     --header-first
-    --no-header-first
     --ellipsis
     --preview
-    --no-preview
     --preview-window
     --height
     --min-height
-    --no-height
-    --no-margin
-    --no-padding
-    --no-border
     --border
-    --no-border-label
     --border-label
     --border-label-pos
-    --no-preview-label
     --preview-label
     --preview-label-pos
     --no-unicode
-    --unicode
     --margin
     --padding
     --tabstop
     --listen
-    --no-listen
-    --clear
     --no-clear
     --version
     --"
 
   case "${prev}" in
-  --algo)
-    COMPREPLY=( $(compgen -W "v1 v2" -- "$cur") )
-    return 0
-    ;;
   --scheme)
     COMPREPLY=( $(compgen -W "default path history" -- "$cur") )
     return 0
@@ -261,28 +242,32 @@ _fzf_opts_completion() {
 }
 
 _fzf_handle_dynamic_completion() {
-  local cmd orig_var orig ret orig_cmd orig_complete
+  local cmd ret REPLY orig_cmd orig_complete
   cmd="$1"
   shift
   orig_cmd="$1"
-  orig_var="_fzf_orig_completion_$cmd"
-  orig="${!orig_var-}"
-  orig="${orig##*#}"
-  if [[ -n "$orig" ]] && type "$orig" > /dev/null 2>&1; then
-    $orig "$@"
+  if __fzf_orig_completion_get_orig_func "$cmd"; then
+    "$REPLY" "$@"
   elif [[ -n "${_fzf_completion_loader-}" ]]; then
     orig_complete=$(complete -p "$orig_cmd" 2> /dev/null)
-    _completion_loader "$@"
+    $_fzf_completion_loader "$@"
     ret=$?
     # _completion_loader may not have updated completion for the command
     if [[ "$(complete -p "$orig_cmd" 2> /dev/null)" != "$orig_complete" ]]; then
       __fzf_orig_completion < <(complete -p "$orig_cmd" 2> /dev/null)
+
+      # Update orig_complete by _fzf_orig_completion entry
+      [[ $orig_complete =~ ' -F '(_fzf_[^ ]+)' ' ]] &&
+        __fzf_orig_completion_instantiate "$cmd" "${BASH_REMATCH[1]}" &&
+        orig_complete=$REPLY
+
       if [[ "${__fzf_nospace_commands-}" = *" $orig_cmd "* ]]; then
         eval "${orig_complete/ -F / -o nospace -F }"
       else
         eval "$orig_complete"
       fi
     fi
+    [[ $ret -eq 0 ]] && return 124
     return $ret
   fi
 }
@@ -293,7 +278,6 @@ __fzf_generic_path_completion() {
   if [[ $cmd == \\* ]]; then
     cmd="${cmd:1}"
   fi
-  cmd="${cmd//[^A-Za-z0-9_=]/_}"
   COMPREPLY=()
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
   cur="${COMP_WORDS[COMP_CWORD]}"
@@ -309,9 +293,24 @@ __fzf_generic_path_completion() {
         leftover=${leftover/#\/}
         [[ -z "$dir" ]] && dir='.'
         [[ "$dir" != "/" ]] && dir="${dir/%\//}"
-        matches=$(eval "$1 $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $2" __fzf_comprun "$4" -q "$leftover" | while read -r item; do
-          printf "%q " "${item%$3}$3"
-        done)
+        matches=$(
+          export FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --scheme=path" "${FZF_COMPLETION_OPTS-} $2")
+          unset FZF_DEFAULT_COMMAND FZF_DEFAULT_OPTS_FILE
+          if declare -F "$1" > /dev/null; then
+            eval "$1 $(printf %q "$dir")" | __fzf_comprun "$4" -q "$leftover"
+          else
+            if [[ $1 =~ dir ]]; then
+              walker=dir,follow
+              rest=${FZF_COMPLETION_DIR_OPTS-}
+            else
+              walker=file,dir,follow,hidden
+              rest=${FZF_COMPLETION_PATH_OPTS-}
+            fi
+            __fzf_comprun "$4" -q "$leftover" --walker "$walker" --walker-root="$dir" $rest
+          fi | while read -r item; do
+            printf "%q " "${item%$3}$3"
+          done
+        )
         matches=${matches% }
         [[ -z "$3" ]] && [[ "${__fzf_nospace_commands-}" = *" ${COMP_WORDS[0]} "* ]] && matches="$matches "
         if [[ -n "$matches" ]]; then
@@ -359,13 +358,16 @@ _fzf_complete() {
   post="$(caller 0 | command awk '{print $2}')_post"
   type -t "$post" > /dev/null 2>&1 || post='command cat'
 
-  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
+  cmd="${COMP_WORDS[0]}"
   cur="${COMP_WORDS[COMP_CWORD]}"
   if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *':='* ]] && [[ $cur != *'`'* ]]; then
     cur=${cur:0:${#cur}-${#trigger}}
 
-    selected=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $str_arg" __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | command tr '\n' ' ')
+    selected=$(
+      FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse" "${FZF_COMPLETION_OPTS-} $str_arg") \
+      FZF_DEFAULT_OPTS_FILE='' \
+        __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | command tr '\n' ' ')
     selected=${selected% } # Strip trailing space not to repeat "-o nospace"
     if [[ -n "$selected" ]]; then
       COMPREPLY=("$selected")
@@ -469,8 +471,11 @@ complete -o default -F _fzf_opts_completion fzf
 # fzf-tmux specific options (like `-w WIDTH`) are left as a future patch.
 complete -o default -F _fzf_opts_completion fzf-tmux
 
-d_cmds="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
-a_cmds="
+d_cmds="${FZF_COMPLETION_DIR_COMMANDS-cd pushd rmdir}"
+
+# NOTE: $FZF_COMPLETION_PATH_COMMANDS and $FZF_COMPLETION_VAR_COMMANDS are
+# undocumented and subject to change in the future.
+a_cmds="${FZF_COMPLETION_PATH_COMMANDS-"
   awk bat cat diff diff3
   emacs emacsclient ex file ftp g++ gcc gvim head hg hx java
   javac ld less more mvim nvim patch perl python ruby
@@ -478,25 +483,31 @@ a_cmds="
   basename bunzip2 bzip2 chmod chown curl cp dirname du
   find git grep gunzip gzip hg jar
   ln ls mv open rm rsync scp
-  svn tar unzip zip"
+  svn tar unzip zip"}"
+v_cmds="${FZF_COMPLETION_VAR_COMMANDS-export unset printenv}"
 
 # Preserve existing completion
-__fzf_orig_completion < <(complete -p $d_cmds $a_cmds ssh 2> /dev/null)
+__fzf_orig_completion < <(complete -p $d_cmds $a_cmds $v_cmds unalias kill ssh 2> /dev/null)
 
-if type _completion_loader > /dev/null 2>&1; then
-  _fzf_completion_loader=1
+if type _comp_load > /dev/null 2>&1; then
+  # _comp_load was added in bash-completion 2.12 to replace _completion_loader.
+  # We use it without -D option so that it does not use _comp_complete_minimal as the fallback.
+  _fzf_completion_loader=_comp_load
+elif type __load_completion > /dev/null 2>&1; then
+  # In bash-completion 2.11, _completion_loader internally calls __load_completion
+  # and if it returns a non-zero status, it sets the default 'minimal' completion.
+  _fzf_completion_loader=__load_completion
+elif type _completion_loader > /dev/null 2>&1; then
+  _fzf_completion_loader=_completion_loader
 fi
 
 __fzf_defc() {
-  local cmd func opts orig_var orig def
+  local cmd func opts REPLY
   cmd="$1"
   func="$2"
   opts="$3"
-  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
-  orig="${!orig_var-}"
-  if [[ -n "$orig" ]]; then
-    printf -v def "$orig" "$func"
-    eval "$def"
+  if __fzf_orig_completion_instantiate "$cmd" "$func"; then
+    eval "$REPLY"
   else
     complete -F "$func" $opts "$cmd"
   fi
@@ -509,13 +520,24 @@ done
 
 # Directory
 for cmd in $d_cmds; do
-  __fzf_defc "$cmd" _fzf_dir_completion "-o nospace -o dirnames"
+  __fzf_defc "$cmd" _fzf_dir_completion "-o bashdefault -o nospace -o dirnames"
 done
 
+# Variables
+for cmd in $v_cmds; do
+  __fzf_defc "$cmd" _fzf_var_completion "-o default -o nospace -v"
+done
+
+# Aliases
+__fzf_defc unalias _fzf_alias_completion "-a"
+
+# Processes
+__fzf_defc kill _fzf_proc_completion "-o default -o bashdefault"
+
 # ssh
 __fzf_defc ssh _fzf_complete_ssh "-o default -o bashdefault"
 
-unset cmd d_cmds a_cmds
+unset cmd d_cmds a_cmds v_cmds
 
 _fzf_setup_completion() {
   local kind fn cmd
@@ -537,8 +559,4 @@ _fzf_setup_completion() {
   done
 }
 
-# Environment variables / Aliases / Hosts / Process
-_fzf_setup_completion 'var'   export unset printenv
-_fzf_setup_completion 'alias' unalias
-_fzf_setup_completion 'host'  telnet
-_fzf_setup_completion 'proc'  kill
+fi

shell/completion.zsh

@@ -4,12 +4,12 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/ completion.zsh
 #
-# - $FZF_TMUX               (default: 0)
-# - $FZF_TMUX_OPTS          (default: '-d 40%')
-# - $FZF_COMPLETION_TRIGGER (default: '**')
-# - $FZF_COMPLETION_OPTS    (default: empty)
-
-[[ -o interactive ]] || return 0
+# - $FZF_TMUX                 (default: 0)
+# - $FZF_TMUX_OPTS            (default: empty)
+# - $FZF_COMPLETION_TRIGGER   (default: '**')
+# - $FZF_COMPLETION_OPTS      (default: empty)
+# - $FZF_COMPLETION_PATH_OPTS (default: empty)
+# - $FZF_COMPLETION_DIR_OPTS  (default: empty)
 
 
 # Both branches of the following `if` do the same thing -- define
@@ -75,27 +75,35 @@ fi
 # This brace is the start of try-always block. The `always` part is like
 # `finally` in lesser languages. We use it to *always* restore user options.
 {
+# The 'emulate' command should not be placed inside the interactive if check;
+# placing it there fails to disable alias expansion. See #3731.
+if [[ -o interactive ]]; then
 
 # To use custom commands instead of find, override _fzf_compgen_{path,dir}
-if ! declare -f _fzf_compgen_path > /dev/null; then
-  _fzf_compgen_path() {
-    echo "$1"
-    command find -L "$1" \
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
-      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
-  }
-fi
-
-if ! declare -f _fzf_compgen_dir > /dev/null; then
-  _fzf_compgen_dir() {
-    command find -L "$1" \
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
-      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
-  }
-fi
+#
+#   _fzf_compgen_path() {
+#     echo "$1"
+#     command find -L "$1" \
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
+#       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+#   }
+#
+#   _fzf_compgen_dir() {
+#     command find -L "$1" \
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
+#       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+#   }
 
 ###########################################################
 
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
+
 __fzf_comprun() {
   if [[ "$(type _fzf_comprun 2>&1)" =~ function ]]; then
     _fzf_comprun "$@"
@@ -148,10 +156,25 @@ __fzf_generic_path_completion() {
       leftover=${leftover/#\/}
       [ -z "$dir" ] && dir='.'
       [ "$dir" != "/" ] && dir="${dir/%\//}"
-      matches=$(eval "$compgen $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-}" __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" | while read item; do
-        item="${item%$suffix}$suffix"
-        echo -n "${(q)item} "
-      done)
+      matches=$(
+        export FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --scheme=path" "${FZF_COMPLETION_OPTS-}")
+        unset FZF_DEFAULT_COMMAND FZF_DEFAULT_OPTS_FILE
+        if declare -f "$compgen" > /dev/null; then
+          eval "$compgen $(printf %q "$dir")" | __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover"
+        else
+          if [[ $compgen =~ dir ]]; then
+            walker=dir,follow
+            rest=${FZF_COMPLETION_DIR_OPTS-}
+          else
+            walker=file,dir,follow,hidden
+            rest=${FZF_COMPLETION_PATH_OPTS-}
+          fi
+          __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" --walker "$walker" --walker-root="$dir" ${(Q)${(Z+n+)rest}} < /dev/tty
+        fi | while read item; do
+          item="${item%$suffix}$suffix"
+          echo -n "${(q)item} "
+        done
+      )
       matches=${matches% }
       if [ -n "$matches" ]; then
         LBUFFER="$lbuf$matches$tail"
@@ -211,7 +234,10 @@ _fzf_complete() {
   type $post > /dev/null 2>&1 || post=cat
 
   _fzf_feed_fifo "$fifo"
-  matches=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $str_arg" __fzf_comprun "$cmd" "${args[@]}" -q "${(Q)prefix}" < "$fifo" | $post | tr '\n' ' ')
+  matches=$(
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse" "${FZF_COMPLETION_OPTS-} $str_arg") \
+    FZF_DEFAULT_OPTS_FILE='' \
+      __fzf_comprun "$cmd" "${args[@]}" -q "${(Q)prefix}" < "$fifo" | $post | tr '\n' ' ')
   if [ -n "$matches" ]; then
     LBUFFER="$lbuf$matches"
   fi
@@ -309,7 +335,7 @@ fzf-completion() {
 
   # Trigger sequence given
   if [ ${#tokens} -gt 1 -a "$tail" = "$trigger" ]; then
-    d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir})
+    d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS-cd pushd rmdir})
 
     [ -z "$trigger"      ] && prefix=${tokens[-1]} || prefix=${tokens[-1]:0:-${#trigger}}
     if [[ $prefix = *'$('* ]] || [[ $prefix = *'<('* ]] || [[ $prefix = *'>('* ]] || [[ $prefix = *':='* ]] || [[ $prefix = *'`'* ]]; then
@@ -339,6 +365,7 @@ fzf-completion() {
 
 zle     -N   fzf-completion
 bindkey '^I' fzf-completion
+fi
 
 } always {
   # Restore the original options.

shell/key-bindings.bash

@@ -11,20 +11,24 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
-[[ $- =~ i ]] || return 0
+if [[ $- =~ i ]]; then
 
 
 # Key bindings
 # ------------
+
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
+
 __fzf_select__() {
-  local cmd opts
-  cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
-    -o -type f -print \
-    -o -type d -print \
-    -o -type l -print 2> /dev/null | command cut -b3-"}"
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore --reverse --scheme=path ${FZF_DEFAULT_OPTS-} ${FZF_CTRL_T_OPTS-} -m"
-  eval "$cmd" |
-    FZF_DEFAULT_OPTS="$opts" $(__fzfcmd) "$@" |
+  FZF_DEFAULT_COMMAND=${FZF_CTRL_T_COMMAND:-} \
+  FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path" "${FZF_CTRL_T_OPTS-} -m") \
+  FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) "$@" |
     while read -r item; do
       printf '%q ' "$item"  # escape special chars
     done
@@ -42,23 +46,24 @@ fzf-file-widget() {
 }
 
 __fzf_cd__() {
-  local cmd opts dir
-  cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
-    -o -type d -print 2> /dev/null | command cut -b3-"}"
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore --reverse --scheme=path ${FZF_DEFAULT_OPTS-} ${FZF_ALT_C_OPTS-} +m"
-  dir=$(set +o pipefail; eval "$cmd" | FZF_DEFAULT_OPTS="$opts" $(__fzfcmd)) && printf 'builtin cd -- %q' "$dir"
+  local dir
+  dir=$(
+    FZF_DEFAULT_COMMAND=${FZF_ALT_C_COMMAND:-} \
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path" "${FZF_ALT_C_OPTS-} +m") \
+    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd)
+  ) && printf 'builtin cd -- %q' "$(builtin unset CDPATH && builtin cd -- "$dir" && builtin pwd)"
 }
 
 if command -v perl > /dev/null; then
   __fzf_history__() {
-    local output opts script
-    opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} -n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0"
+    local output script
     script='BEGIN { getc; $/ = "\n\t"; $HISTCOUNT = $ENV{last_hist} + 1 } s/^[ *]//; print $HISTCOUNT - $. . "\t$_" if !$seen{$_}++'
     output=$(
       set +o pipefail
       builtin fc -lnr -2147483648 |
         last_hist=$(HISTTIMEFORMAT='' builtin history 1) command perl -n -l0 -e "$script" |
-        FZF_DEFAULT_OPTS="$opts" $(__fzfcmd) --query "$READLINE_LINE"
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0") \
+        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
     ) || return
     READLINE_LINE=${output#*$'\t'}
     if [[ -z "$READLINE_POINT" ]]; then
@@ -69,14 +74,13 @@ if command -v perl > /dev/null; then
   }
 else # awk - fallback for POSIX systems
   __fzf_history__() {
-    local output opts script n x y z d
+    local output script n x y z d
     if [[ -z $__fzf_awk ]]; then
       __fzf_awk=awk
       # choose the faster mawk if: it's installed && build date >= 20230322 && version >= 1.3.4
       IFS=' .' read n x y z d <<< $(command mawk -W version 2> /dev/null)
       [[ $n == mawk ]] && (( d >= 20230302 && (x *1000 +y) *1000 +z >= 1003004 )) && __fzf_awk=mawk
     fi
-    opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} -n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0"
     [[ $(HISTTIMEFORMAT='' builtin history 1) =~ [[:digit:]]+ ]]    # how many history entries
     script='function P(b) { ++n; sub(/^[ *]/, "", b); if (!seen[b]++) { printf "%d\t%s%c", '$((BASH_REMATCH + 1))' - n, b, 0 } }
     NR==1 { b = substr($0, 2); next }
@@ -87,7 +91,8 @@ else # awk - fallback for POSIX systems
       set +o pipefail
       builtin fc -lnr -2147483648 2> /dev/null |   # ( $'\t '<lines>$'\n' )* ; <lines> ::= [^\n]* ( $'\n'<lines> )*
         command $__fzf_awk "$script"           |   # ( <counter>$'\t'<lines>$'\000' )*
-        FZF_DEFAULT_OPTS="$opts" $(__fzfcmd) --query "$READLINE_LINE"
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0") \
+        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
     ) || return
     READLINE_LINE=${output#*$'\t'}
     if [[ -z "$READLINE_POINT" ]]; then
@@ -107,9 +112,11 @@ bind -m emacs-standard '"\C-z": vi-editing-mode'
 
 if (( BASH_VERSINFO[0] < 4 )); then
   # CTRL-T - Paste the selected file path into the command line
-  bind -m emacs-standard '"\C-t": " \C-b\C-k \C-u`__fzf_select__`\e\C-e\er\C-a\C-y\C-h\C-e\e \C-y\ey\C-x\C-x\C-f"'
-  bind -m vi-command '"\C-t": "\C-z\C-t\C-z"'
-  bind -m vi-insert '"\C-t": "\C-z\C-t\C-z"'
+  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
+    bind -m emacs-standard '"\C-t": " \C-b\C-k \C-u`__fzf_select__`\e\C-e\er\C-a\C-y\C-h\C-e\e \C-y\ey\C-x\C-x\C-f"'
+    bind -m vi-command '"\C-t": "\C-z\C-t\C-z"'
+    bind -m vi-insert '"\C-t": "\C-z\C-t\C-z"'
+  fi
 
   # CTRL-R - Paste the selected command from history into the command line
   bind -m emacs-standard '"\C-r": "\C-e \C-u\C-y\ey\C-u`__fzf_history__`\e\C-e\er"'
@@ -117,9 +124,11 @@ if (( BASH_VERSINFO[0] < 4 )); then
   bind -m vi-insert '"\C-r": "\C-z\C-r\C-z"'
 else
   # CTRL-T - Paste the selected file path into the command line
-  bind -m emacs-standard -x '"\C-t": fzf-file-widget'
-  bind -m vi-command -x '"\C-t": fzf-file-widget'
-  bind -m vi-insert -x '"\C-t": fzf-file-widget'
+  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
+    bind -m emacs-standard -x '"\C-t": fzf-file-widget'
+    bind -m vi-command -x '"\C-t": fzf-file-widget'
+    bind -m vi-insert -x '"\C-t": fzf-file-widget'
+  fi
 
   # CTRL-R - Paste the selected command from history into the command line
   bind -m emacs-standard -x '"\C-r": __fzf_history__'
@@ -128,6 +137,10 @@ else
 fi
 
 # ALT-C - cd into the selected directory
-bind -m emacs-standard '"\ec": " \C-b\C-k \C-u`__fzf_cd__`\e\C-e\er\C-m\C-y\C-h\e \C-y\ey\C-x\C-x\C-d"'
-bind -m vi-command '"\ec": "\C-z\ec\C-z"'
-bind -m vi-insert '"\ec": "\C-z\ec\C-z"'
+if [[ "${FZF_ALT_C_COMMAND-x}" != "" ]]; then
+  bind -m emacs-standard '"\ec": " \C-b\C-k \C-u`__fzf_cd__`\e\C-e\er\C-m\C-y\C-h\e \C-y\ey\C-x\C-x\C-d"'
+  bind -m vi-command '"\ec": "\C-z\ec\C-z"'
+  bind -m vi-insert '"\ec": "\C-z\ec\C-z"'
+fi
+
+fi

shell/key-bindings.fish

@@ -18,25 +18,28 @@ status is-interactive; or exit 0
 # ------------
 function fzf_key_bindings
 
+  function __fzf_defaults
+    # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+    # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+    test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
+    echo "--height $FZF_TMUX_HEIGHT --bind=ctrl-z:ignore" $argv[1]
+    command cat "$FZF_DEFAULT_OPTS_FILE" 2> /dev/null
+    echo $FZF_DEFAULT_OPTS $argv[2]
+  end
+
   # Store current token in $dir as root for the 'find' command
   function fzf-file-widget -d "List files and folders"
     set -l commandline (__fzf_parse_commandline)
-    set -l dir $commandline[1]
+    set -lx dir $commandline[1]
     set -l fzf_query $commandline[2]
     set -l prefix $commandline[3]
 
-    # "-path \$dir'*/.*'" matches hidden files/folders inside $dir but not
-    # $dir itself, even if hidden.
-    test -n "$FZF_CTRL_T_COMMAND"; or set -l FZF_CTRL_T_COMMAND "
-    command find -L \$dir -mindepth 1 \\( -path \$dir'*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' \\) -prune \
-    -o -type f -print \
-    -o -type d -print \
-    -o -type l -print 2> /dev/null | sed 's@^\./@@'"
-
     test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
     begin
-      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT --reverse --scheme=path --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS"
-      eval "$FZF_CTRL_T_COMMAND | "(__fzfcmd)' -m --query "'$fzf_query'"' | while read -l r; set result $result $r; end
+      set -lx FZF_DEFAULT_OPTS (__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path --walker-root='$dir'" "$FZF_CTRL_T_OPTS")
+      set -lx FZF_DEFAULT_COMMAND "$FZF_CTRL_T_COMMAND"
+      set -lx FZF_DEFAULT_OPTS_FILE ''
+      eval (__fzfcmd)' -m --query "'$fzf_query'"' | while read -l r; set result $result $r; end
     end
     if [ -z "$result" ]
       commandline -f repaint
@@ -56,7 +59,8 @@ function fzf_key_bindings
   function fzf-history-widget -d "Show command history"
     test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
     begin
-      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT $FZF_DEFAULT_OPTS --scheme=history --bind=ctrl-r:toggle-sort,ctrl-z:ignore $FZF_CTRL_R_OPTS +m"
+      set -lx FZF_DEFAULT_OPTS (__fzf_defaults "" "--scheme=history --bind=ctrl-r:toggle-sort $FZF_CTRL_R_OPTS +m")
+      set -lx FZF_DEFAULT_OPTS_FILE ''
 
       set -l FISH_MAJOR (echo $version | cut -f1 -d.)
       set -l FISH_MINOR (echo $version | cut -f2 -d.)
@@ -77,17 +81,16 @@ function fzf_key_bindings
 
   function fzf-cd-widget -d "Change directory"
     set -l commandline (__fzf_parse_commandline)
-    set -l dir $commandline[1]
+    set -lx dir $commandline[1]
     set -l fzf_query $commandline[2]
     set -l prefix $commandline[3]
 
-    test -n "$FZF_ALT_C_COMMAND"; or set -l FZF_ALT_C_COMMAND "
-    command find -L \$dir -mindepth 1 \\( -path \$dir'*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' \\) -prune \
-    -o -type d -print 2> /dev/null | sed 's@^\./@@'"
     test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
     begin
-      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT --reverse --scheme=path --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS"
-      eval "$FZF_ALT_C_COMMAND | "(__fzfcmd)' +m --query "'$fzf_query'"' | read -l result
+      set -lx FZF_DEFAULT_OPTS (__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path --walker-root='$dir'" "$FZF_ALT_C_OPTS")
+      set -lx FZF_DEFAULT_OPTS_FILE ''
+      set -lx FZF_DEFAULT_COMMAND "$FZF_ALT_C_COMMAND"
+      eval (__fzfcmd)' +m --query "'$fzf_query'"' | read -l result
 
       if [ -n "$result" ]
         cd -- $result
@@ -113,14 +116,22 @@ function fzf_key_bindings
     end
   end
 
-  bind \ct fzf-file-widget
   bind \cr fzf-history-widget
-  bind \ec fzf-cd-widget
+  if not set -q FZF_CTRL_T_COMMAND; or test -n "$FZF_CTRL_T_COMMAND"
+    bind \ct fzf-file-widget
+  end
+  if not set -q FZF_ALT_C_COMMAND; or test -n "$FZF_ALT_C_COMMAND"
+    bind \ec fzf-cd-widget
+  end
 
   if bind -M insert > /dev/null 2>&1
-    bind -M insert \ct fzf-file-widget
     bind -M insert \cr fzf-history-widget
-    bind -M insert \ec fzf-cd-widget
+    if not set -q FZF_CTRL_T_COMMAND; or test -n "$FZF_CTRL_T_COMMAND"
+      bind -M insert \ct fzf-file-widget
+    end
+    if not set -q FZF_ALT_C_COMMAND; or test -n "$FZF_ALT_C_COMMAND"
+      bind -M insert \ec fzf-cd-widget
+    end
   end
 
   function __fzf_parse_commandline -d 'Parse the current command line token and return split of existing filepath, fzf query, and optional -option= prefix'

shell/key-bindings.zsh

@@ -11,8 +11,6 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
-[[ -o interactive ]] || return 0
-
 
 # Key bindings
 # ------------
@@ -38,16 +36,23 @@ fi
 'builtin' 'emulate' 'zsh' && 'builtin' 'setopt' 'no_aliases'
 
 {
+if [[ -o interactive ]]; then
+
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
 
 # CTRL-T - Paste the selected file path(s) into the command line
-__fsel() {
-  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
-    -o -type f -print \
-    -o -type d -print \
-    -o -type l -print 2> /dev/null | cut -b3-"}"
+__fzf_select() {
   setopt localoptions pipefail no_aliases 2> /dev/null
   local item
-  eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_CTRL_T_OPTS-}" $(__fzfcmd) -m "$@" | while read item; do
+  FZF_DEFAULT_COMMAND=${FZF_CTRL_T_COMMAND:-} \
+  FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path" "${FZF_CTRL_T_OPTS-} -m") \
+  FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) "$@" < /dev/tty | while read item; do
     echo -n "${(q)item} "
   done
   local ret=$?
@@ -61,50 +66,58 @@ __fzfcmd() {
 }
 
 fzf-file-widget() {
-  LBUFFER="${LBUFFER}$(__fsel)"
+  LBUFFER="${LBUFFER}$(__fzf_select)"
   local ret=$?
   zle reset-prompt
   return $ret
 }
-zle     -N            fzf-file-widget
-bindkey -M emacs '^T' fzf-file-widget
-bindkey -M vicmd '^T' fzf-file-widget
-bindkey -M viins '^T' fzf-file-widget
+if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
+  zle     -N            fzf-file-widget
+  bindkey -M emacs '^T' fzf-file-widget
+  bindkey -M vicmd '^T' fzf-file-widget
+  bindkey -M viins '^T' fzf-file-widget
+fi
 
 # ALT-C - cd into the selected directory
 fzf-cd-widget() {
-  local cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
-    -o -type d -print 2> /dev/null | cut -b3-"}"
   setopt localoptions pipefail no_aliases 2> /dev/null
-  local dir="$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_ALT_C_OPTS-}" $(__fzfcmd) +m)"
+  local dir="$(
+    FZF_DEFAULT_COMMAND=${FZF_ALT_C_COMMAND:-} \
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path" "${FZF_ALT_C_OPTS-} +m") \
+    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) < /dev/tty)"
   if [[ -z "$dir" ]]; then
     zle redisplay
     return 0
   fi
   zle push-line # Clear buffer. Auto-restored on next prompt.
-  BUFFER="builtin cd -- ${(q)dir}"
+  BUFFER="builtin cd -- ${(q)dir:a}"
   zle accept-line
   local ret=$?
   unset dir # ensure this doesn't end up appearing in prompt expansion
   zle reset-prompt
   return $ret
 }
-zle     -N             fzf-cd-widget
-bindkey -M emacs '\ec' fzf-cd-widget
-bindkey -M vicmd '\ec' fzf-cd-widget
-bindkey -M viins '\ec' fzf-cd-widget
+if [[ "${FZF_ALT_C_COMMAND-x}" != "" ]]; then
+  zle     -N             fzf-cd-widget
+  bindkey -M emacs '\ec' fzf-cd-widget
+  bindkey -M vicmd '\ec' fzf-cd-widget
+  bindkey -M viins '\ec' fzf-cd-widget
+fi
 
 # CTRL-R - Paste the selected command from history into the command line
 fzf-history-widget() {
   local selected num
   setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases 2> /dev/null
-  selected=( $(fc -rl 1 | awk '{ cmd=$0; sub(/^[ \t]*[0-9]+\**[ \t]+/, "", cmd); if (!seen[cmd]++) print $0 }' |
-    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} ${FZF_DEFAULT_OPTS-} -n2..,.. --scheme=history --bind=ctrl-r:toggle-sort,ctrl-z:ignore ${FZF_CTRL_R_OPTS-} --query=${(qqq)LBUFFER} +m" $(__fzfcmd)) )
+  selected="$(fc -rl 1 | awk '{ cmd=$0; sub(/^[ \t]*[0-9]+\**[ \t]+/, "", cmd); if (!seen[cmd]++) print $0 }' |
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} --query=${(qqq)LBUFFER} +m") \
+    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd))"
   local ret=$?
   if [ -n "$selected" ]; then
-    num=$selected[1]
-    if [ -n "$num" ]; then
-      zle vi-fetch-history -n $num
+    num=$(awk '{print $1}' <<< "$selected")
+    if [[ "$num" =~ '^[1-9][0-9]*\*?$' ]]; then
+      zle vi-fetch-history -n ${num%\*}
+    else # selected is a custom query, not from history
+      LBUFFER="$selected"
     fi
   fi
   zle reset-prompt
@@ -114,6 +127,7 @@ zle     -N            fzf-history-widget
 bindkey -M emacs '^R' fzf-history-widget
 bindkey -M vicmd '^R' fzf-history-widget
 bindkey -M viins '^R' fzf-history-widget
+fi
 
 } always {
   eval $__fzf_key_bindings_options

src/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2023 Junegunn Choi
+Copyright (c) 2013-2024 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

src/actiontype_string.go

@@ -0,0 +1,133 @@
+// Code generated by "stringer -type=actionType"; DO NOT EDIT.
+
+package fzf
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[actIgnore-0]
+	_ = x[actStart-1]
+	_ = x[actClick-2]
+	_ = x[actInvalid-3]
+	_ = x[actChar-4]
+	_ = x[actMouse-5]
+	_ = x[actBeginningOfLine-6]
+	_ = x[actAbort-7]
+	_ = x[actAccept-8]
+	_ = x[actAcceptNonEmpty-9]
+	_ = x[actAcceptOrPrintQuery-10]
+	_ = x[actBackwardChar-11]
+	_ = x[actBackwardDeleteChar-12]
+	_ = x[actBackwardDeleteCharEof-13]
+	_ = x[actBackwardWord-14]
+	_ = x[actCancel-15]
+	_ = x[actChangeBorderLabel-16]
+	_ = x[actChangeHeader-17]
+	_ = x[actChangeMulti-18]
+	_ = x[actChangePreviewLabel-19]
+	_ = x[actChangePrompt-20]
+	_ = x[actChangeQuery-21]
+	_ = x[actClearScreen-22]
+	_ = x[actClearQuery-23]
+	_ = x[actClearSelection-24]
+	_ = x[actClose-25]
+	_ = x[actDeleteChar-26]
+	_ = x[actDeleteCharEof-27]
+	_ = x[actEndOfLine-28]
+	_ = x[actFatal-29]
+	_ = x[actForwardChar-30]
+	_ = x[actForwardWord-31]
+	_ = x[actKillLine-32]
+	_ = x[actKillWord-33]
+	_ = x[actUnixLineDiscard-34]
+	_ = x[actUnixWordRubout-35]
+	_ = x[actYank-36]
+	_ = x[actBackwardKillWord-37]
+	_ = x[actSelectAll-38]
+	_ = x[actDeselectAll-39]
+	_ = x[actToggle-40]
+	_ = x[actToggleSearch-41]
+	_ = x[actToggleAll-42]
+	_ = x[actToggleDown-43]
+	_ = x[actToggleUp-44]
+	_ = x[actToggleIn-45]
+	_ = x[actToggleOut-46]
+	_ = x[actToggleTrack-47]
+	_ = x[actToggleTrackCurrent-48]
+	_ = x[actToggleHeader-49]
+	_ = x[actTrackCurrent-50]
+	_ = x[actUntrackCurrent-51]
+	_ = x[actDown-52]
+	_ = x[actUp-53]
+	_ = x[actPageUp-54]
+	_ = x[actPageDown-55]
+	_ = x[actPosition-56]
+	_ = x[actHalfPageUp-57]
+	_ = x[actHalfPageDown-58]
+	_ = x[actOffsetUp-59]
+	_ = x[actOffsetDown-60]
+	_ = x[actJump-61]
+	_ = x[actJumpAccept-62]
+	_ = x[actPrintQuery-63]
+	_ = x[actRefreshPreview-64]
+	_ = x[actReplaceQuery-65]
+	_ = x[actToggleSort-66]
+	_ = x[actShowPreview-67]
+	_ = x[actHidePreview-68]
+	_ = x[actTogglePreview-69]
+	_ = x[actTogglePreviewWrap-70]
+	_ = x[actTransform-71]
+	_ = x[actTransformBorderLabel-72]
+	_ = x[actTransformHeader-73]
+	_ = x[actTransformPreviewLabel-74]
+	_ = x[actTransformPrompt-75]
+	_ = x[actTransformQuery-76]
+	_ = x[actPreview-77]
+	_ = x[actChangePreview-78]
+	_ = x[actChangePreviewWindow-79]
+	_ = x[actPreviewTop-80]
+	_ = x[actPreviewBottom-81]
+	_ = x[actPreviewUp-82]
+	_ = x[actPreviewDown-83]
+	_ = x[actPreviewPageUp-84]
+	_ = x[actPreviewPageDown-85]
+	_ = x[actPreviewHalfPageUp-86]
+	_ = x[actPreviewHalfPageDown-87]
+	_ = x[actPrevHistory-88]
+	_ = x[actPrevSelected-89]
+	_ = x[actPut-90]
+	_ = x[actNextHistory-91]
+	_ = x[actNextSelected-92]
+	_ = x[actExecute-93]
+	_ = x[actExecuteSilent-94]
+	_ = x[actExecuteMulti-95]
+	_ = x[actSigStop-96]
+	_ = x[actFirst-97]
+	_ = x[actLast-98]
+	_ = x[actReload-99]
+	_ = x[actReloadSync-100]
+	_ = x[actDisableSearch-101]
+	_ = x[actEnableSearch-102]
+	_ = x[actSelect-103]
+	_ = x[actDeselect-104]
+	_ = x[actUnbind-105]
+	_ = x[actRebind-106]
+	_ = x[actBecome-107]
+	_ = x[actResponse-108]
+	_ = x[actShowHeader-109]
+	_ = x[actHideHeader-110]
+}
+
+const _actionType_name = "actIgnoreactStartactClickactInvalidactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeHeaderactChangeMultiactChangePreviewLabelactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactTrackCurrentactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformHeaderactTransformPreviewLabelactTransformPromptactTransformQueryactPreviewactChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactBecomeactResponseactShowHeaderactHideHeader"
+
+var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 42, 50, 68, 76, 85, 102, 123, 138, 159, 183, 198, 207, 227, 242, 256, 277, 292, 306, 320, 333, 350, 358, 371, 387, 399, 407, 421, 435, 446, 457, 475, 492, 499, 518, 530, 544, 553, 568, 580, 593, 604, 615, 627, 641, 662, 677, 692, 709, 716, 721, 730, 741, 752, 765, 780, 791, 804, 811, 824, 837, 854, 869, 882, 896, 910, 926, 946, 958, 981, 999, 1023, 1041, 1058, 1068, 1084, 1106, 1119, 1135, 1147, 1161, 1177, 1195, 1215, 1237, 1251, 1266, 1272, 1286, 1301, 1311, 1327, 1342, 1352, 1360, 1367, 1376, 1389, 1405, 1420, 1429, 1440, 1449, 1458, 1467, 1478, 1491, 1504}
+
+func (i actionType) String() string {
+	if i < 0 || i >= actionType(len(_actionType_index)-1) {
+		return "actionType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _actionType_name[_actionType_index[i]:_actionType_index[i+1]]
+}

src/algo/algo.go

@@ -152,7 +152,13 @@ var (
 	// Extra bonus for word boundary after slash, colon, semi-colon, and comma
 	bonusBoundaryDelimiter int16 = bonusBoundary + 1
 
-	initialCharClass charClass = charWhite
+	initialCharClass = charWhite
+
+	// A minor optimization that can give 15%+ performance boost
+	asciiCharClasses [unicode.MaxASCII + 1]charClass
+
+	// A minor optimization that can give yet another 5% performance boost
+	bonusMatrix [charNumber + 1][charNumber + 1]int16
 )
 
 type charClass int
@@ -187,6 +193,27 @@ func Init(scheme string) bool {
 	default:
 		return false
 	}
+	for i := 0; i <= unicode.MaxASCII; i++ {
+		char := rune(i)
+		c := charNonWord
+		if char >= 'a' && char <= 'z' {
+			c = charLower
+		} else if char >= 'A' && char <= 'Z' {
+			c = charUpper
+		} else if char >= '0' && char <= '9' {
+			c = charNumber
+		} else if strings.ContainsRune(whiteChars, char) {
+			c = charWhite
+		} else if strings.ContainsRune(delimiterChars, char) {
+			c = charDelimiter
+		}
+		asciiCharClasses[i] = c
+	}
+	for i := 0; i <= int(charNumber); i++ {
+		for j := 0; j <= int(charNumber); j++ {
+			bonusMatrix[i][j] = bonusFor(charClass(i), charClass(j))
+		}
+	}
 	return true
 }
 
@@ -214,21 +241,6 @@ func alloc32(offset int, slab *util.Slab, size int) (int, []int32) {
 	return offset, make([]int32, size)
 }
 
-func charClassOfAscii(char rune) charClass {
-	if char >= 'a' && char <= 'z' {
-		return charLower
-	} else if char >= 'A' && char <= 'Z' {
-		return charUpper
-	} else if char >= '0' && char <= '9' {
-		return charNumber
-	} else if strings.ContainsRune(whiteChars, char) {
-		return charWhite
-	} else if strings.ContainsRune(delimiterChars, char) {
-		return charDelimiter
-	}
-	return charNonWord
-}
-
 func charClassOfNonAscii(char rune) charClass {
 	if unicode.IsLower(char) {
 		return charLower
@@ -248,31 +260,36 @@ func charClassOfNonAscii(char rune) charClass {
 
 func charClassOf(char rune) charClass {
 	if char <= unicode.MaxASCII {
-		return charClassOfAscii(char)
+		return asciiCharClasses[char]
 	}
 	return charClassOfNonAscii(char)
 }
 
 func bonusFor(prevClass charClass, class charClass) int16 {
 	if class > charNonWord {
-		if prevClass == charWhite {
+		switch prevClass {
+		case charWhite:
 			// Word boundary after whitespace
 			return bonusBoundaryWhite
-		} else if prevClass == charDelimiter {
+		case charDelimiter:
 			// Word boundary after a delimiter character
 			return bonusBoundaryDelimiter
-		} else if prevClass == charNonWord {
+		case charNonWord:
 			// Word boundary
 			return bonusBoundary
 		}
 	}
+
 	if prevClass == charLower && class == charUpper ||
 		prevClass != charNumber && class == charNumber {
 		// camelCase letter123
 		return bonusCamel123
-	} else if class == charNonWord {
+	}
+
+	switch class {
+	case charNonWord, charDelimiter:
 		return bonusNonWord
-	} else if class == charWhite {
+	case charWhite:
 		return bonusBoundaryWhite
 	}
 	return 0
@@ -282,7 +299,7 @@ func bonusAt(input *util.Chars, idx int) int16 {
 	if idx == 0 {
 		return bonusBoundaryWhite
 	}
-	return bonusFor(charClassOf(input.Get(idx-1)), charClassOf(input.Get(idx)))
+	return bonusMatrix[charClassOf(input.Get(idx-1))][charClassOf(input.Get(idx))]
 }
 
 func normalizeRune(r rune) rune {
@@ -335,30 +352,45 @@ func isAscii(runes []rune) bool {
 	return true
 }
 
-func asciiFuzzyIndex(input *util.Chars, pattern []rune, caseSensitive bool) int {
+func asciiFuzzyIndex(input *util.Chars, pattern []rune, caseSensitive bool) (int, int) {
 	// Can't determine
 	if !input.IsBytes() {
-		return 0
+		return 0, input.Length()
 	}
 
 	// Not possible
 	if !isAscii(pattern) {
-		return -1
+		return -1, -1
 	}
 
-	firstIdx, idx := 0, 0
+	firstIdx, idx, lastIdx := 0, 0, 0
+	var b byte
 	for pidx := 0; pidx < len(pattern); pidx++ {
-		idx = trySkip(input, caseSensitive, byte(pattern[pidx]), idx)
+		b = byte(pattern[pidx])
+		idx = trySkip(input, caseSensitive, b, idx)
 		if idx < 0 {
-			return -1
+			return -1, -1
 		}
 		if pidx == 0 && idx > 0 {
 			// Step back to find the right bonus point
 			firstIdx = idx - 1
 		}
+		lastIdx = idx
 		idx++
 	}
-	return firstIdx
+
+	// Find the last appearance of the last character of the pattern to limit the search scope
+	bu := b
+	if !caseSensitive && b >= 'a' && b <= 'z' {
+		bu = b - 32
+	}
+	scope := input.Bytes()[lastIdx:]
+	for offset := len(scope) - 1; offset > 0; offset-- {
+		if scope[offset] == b || scope[offset] == bu {
+			return firstIdx, lastIdx + offset + 1
+		}
+	}
+	return firstIdx, lastIdx + 1
 }
 
 func debugV2(T []rune, pattern []rune, F []int32, lastIdx int, H []int16, C []int16) {
@@ -407,6 +439,9 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 		return Result{0, 0, 0}, posArray(withPos, M)
 	}
 	N := input.Length()
+	if M > N {
+		return Result{-1, -1, 0}, nil
+	}
 
 	// Since O(nm) algorithm can be prohibitively expensive for large input,
 	// we fall back to the greedy algorithm.
@@ -415,10 +450,12 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	}
 
 	// Phase 1. Optimized search for ASCII string
-	idx := asciiFuzzyIndex(input, pattern, caseSensitive)
-	if idx < 0 {
+	minIdx, maxIdx := asciiFuzzyIndex(input, pattern, caseSensitive)
+	if minIdx < 0 {
 		return Result{-1, -1, 0}, nil
 	}
+	// fmt.Println(N, maxIdx, idx, maxIdx-idx, input.ToString())
+	N = maxIdx - minIdx
 
 	// Reuse pre-allocated integer slice to avoid unnecessary sweeping of garbages
 	offset16 := 0
@@ -431,20 +468,19 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	offset32, F := alloc32(offset32, slab, M)
 	// Rune array
 	_, T := alloc32(offset32, slab, N)
-	input.CopyRunes(T)
+	input.CopyRunes(T, minIdx)
 
 	// Phase 2. Calculate bonus for each point
 	maxScore, maxScorePos := int16(0), 0
 	pidx, lastIdx := 0, 0
 	pchar0, pchar, prevH0, prevClass, inGap := pattern[0], pattern[0], int16(0), initialCharClass, false
-	Tsub := T[idx:]
-	H0sub, C0sub, Bsub := H0[idx:][:len(Tsub)], C0[idx:][:len(Tsub)], B[idx:][:len(Tsub)]
-	for off, char := range Tsub {
+	for off, char := range T {
 		var class charClass
 		if char <= unicode.MaxASCII {
-			class = charClassOfAscii(char)
+			class = asciiCharClasses[char]
 			if !caseSensitive && class == charUpper {
 				char += 32
+				T[off] = char
 			}
 		} else {
 			class = charClassOfNonAscii(char)
@@ -454,28 +490,28 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 			if normalize {
 				char = normalizeRune(char)
 			}
+			T[off] = char
 		}
 
-		Tsub[off] = char
-		bonus := bonusFor(prevClass, class)
-		Bsub[off] = bonus
+		bonus := bonusMatrix[prevClass][class]
+		B[off] = bonus
 		prevClass = class
 
 		if char == pchar {
 			if pidx < M {
-				F[pidx] = int32(idx + off)
+				F[pidx] = int32(off)
 				pidx++
 				pchar = pattern[util.Min(pidx, M-1)]
 			}
-			lastIdx = idx + off
+			lastIdx = off
 		}
 
 		if char == pchar0 {
 			score := scoreMatch + bonus*bonusFirstCharMultiplier
-			H0sub[off] = score
-			C0sub[off] = 1
+			H0[off] = score
+			C0[off] = 1
 			if M == 1 && (forward && score > maxScore || !forward && score >= maxScore) {
-				maxScore, maxScorePos = score, idx+off
+				maxScore, maxScorePos = score, off
 				if forward && bonus >= bonusBoundary {
 					break
 				}
@@ -483,24 +519,24 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 			inGap = false
 		} else {
 			if inGap {
-				H0sub[off] = util.Max16(prevH0+scoreGapExtension, 0)
+				H0[off] = util.Max16(prevH0+scoreGapExtension, 0)
 			} else {
-				H0sub[off] = util.Max16(prevH0+scoreGapStart, 0)
+				H0[off] = util.Max16(prevH0+scoreGapStart, 0)
 			}
-			C0sub[off] = 0
+			C0[off] = 0
 			inGap = true
 		}
-		prevH0 = H0sub[off]
+		prevH0 = H0[off]
 	}
 	if pidx != M {
 		return Result{-1, -1, 0}, nil
 	}
 	if M == 1 {
-		result := Result{maxScorePos, maxScorePos + 1, int(maxScore)}
+		result := Result{minIdx + maxScorePos, minIdx + maxScorePos + 1, int(maxScore)}
 		if !withPos {
 			return result, nil
 		}
-		pos := []int{maxScorePos}
+		pos := []int{minIdx + maxScorePos}
 		return result, &pos
 	}
 
@@ -597,7 +633,7 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 			}
 
 			if s > s1 && (s > s2 || s == s2 && preferMatch) {
-				*pos = append(*pos, j)
+				*pos = append(*pos, j+minIdx)
 				if i == 0 {
 					break
 				}
@@ -610,7 +646,7 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	// Start offset we return here is only relevant when begin tiebreak is used.
 	// However finding the accurate offset requires backtracking, and we don't
 	// want to pay extra cost for the option that has lost its importance.
-	return Result{j, maxScorePos + 1, int(maxScore)}, pos
+	return Result{minIdx + j, minIdx + maxScorePos + 1, int(maxScore)}, pos
 }
 
 // Implement the same sorting criteria as V2
@@ -640,7 +676,7 @@ func calculateScore(caseSensitive bool, normalize bool, text *util.Chars, patter
 				*pos = append(*pos, idx)
 			}
 			score += scoreMatch
-			bonus := bonusFor(prevClass, class)
+			bonus := bonusMatrix[prevClass][class]
 			if consecutive == 0 {
 				firstBonus = bonus
 			} else {
@@ -678,7 +714,8 @@ func FuzzyMatchV1(caseSensitive bool, normalize bool, forward bool, text *util.C
 	if len(pattern) == 0 {
 		return Result{0, 0, 0}, nil
 	}
-	if asciiFuzzyIndex(text, pattern, caseSensitive) < 0 {
+	idx, _ := asciiFuzzyIndex(text, pattern, caseSensitive)
+	if idx < 0 {
 		return Result{-1, -1, 0}, nil
 	}
 
@@ -772,7 +809,8 @@ func ExactMatchNaive(caseSensitive bool, normalize bool, forward bool, text *uti
 		return Result{-1, -1, 0}, nil
 	}
 
-	if asciiFuzzyIndex(text, pattern, caseSensitive) < 0 {
+	idx, _ := asciiFuzzyIndex(text, pattern, caseSensitive)
+	if idx < 0 {
 		return Result{-1, -1, 0}, nil
 	}
 

src/algo/algo_test.go

@@ -9,6 +9,10 @@ import (
 	"github.com/junegunn/fzf/src/util"
 )
 
+func init() {
+	Init("default")
+}
+
 func assertMatch(t *testing.T, fun Algo, caseSensitive, forward bool, input, pattern string, sidx int, eidx int, score int) {
 	assertMatch2(t, fun, caseSensitive, false, forward, input, pattern, sidx, eidx, score)
 }

src/algo/normalize.go

@@ -3,7 +3,7 @@
 
 package algo
 
-var normalized map[rune]rune = map[rune]rune{
+var normalized = map[rune]rune{
 	0x00E1: 'a', //  WITH ACUTE, LATIN SMALL LETTER
 	0x0103: 'a', //  WITH BREVE, LATIN SMALL LETTER
 	0x01CE: 'a', //  WITH CARON, LATIN SMALL LETTER

src/ansi.go

@@ -292,7 +292,7 @@ func extractColor(str string, state *ansiState, proc func(string, *ansiState) bo
 
 func parseAnsiCode(s string, delimiter byte) (int, byte, string) {
 	var remaining string
-	i := -1
+	var i int
 	if delimiter == 0 {
 		// Faster than strings.IndexAny(";:")
 		i = strings.IndexByte(s, ';')
@@ -312,7 +312,7 @@ func parseAnsiCode(s string, delimiter byte) (int, byte, string) {
 		// Inlined version of strconv.Atoi() that only handles positive
 		// integers and does not allocate on error.
 		code := 0
-		for _, ch := range []byte(s) {
+		for _, ch := range stringBytes(s) {
 			ch -= '0'
 			if ch > 9 {
 				return -1, delimiter, remaining
@@ -350,10 +350,12 @@ func interpretCode(ansiCode string, prevState *ansiState) ansiState {
 	state256 := 0
 	ptr := &state.fg
 
-	var delimiter byte = 0
+	var delimiter byte
+	count := 0
 	for len(ansiCode) != 0 {
 		var num int
 		if num, delimiter, ansiCode = parseAnsiCode(ansiCode, delimiter); num != -1 {
+			count++
 			switch state256 {
 			case 0:
 				switch num {
@@ -435,6 +437,13 @@ func interpretCode(ansiCode string, prevState *ansiState) ansiState {
 		}
 	}
 
+	// Empty sequence: reset
+	if count == 0 {
+		state.fg = -1
+		state.bg = -1
+		state.attr = 0
+	}
+
 	if state256 > 0 {
 		*ptr = -1
 	}

src/ansi_test.go

@@ -348,6 +348,9 @@ func TestAnsiCodeStringConversion(t *testing.T) {
 	}
 	assert("\x1b[m", nil, "")
 	assert("\x1b[m", &ansiState{attr: tui.Blink, lbg: -1}, "")
+	assert("\x1b[0m", &ansiState{fg: 4, bg: 4, lbg: -1}, "")
+	assert("\x1b[;m", &ansiState{fg: 4, bg: 4, lbg: -1}, "")
+	assert("\x1b[;;m", &ansiState{fg: 4, bg: 4, lbg: -1}, "")
 
 	assert("\x1b[31m", nil, "\x1b[31;49m")
 	assert("\x1b[41m", nil, "\x1b[39;41m")

src/cache.go

@@ -12,8 +12,14 @@ type ChunkCache struct {
 }
 
 // NewChunkCache returns a new ChunkCache
-func NewChunkCache() ChunkCache {
-	return ChunkCache{sync.Mutex{}, make(map[*Chunk]*queryCache)}
+func NewChunkCache() *ChunkCache {
+	return &ChunkCache{sync.Mutex{}, make(map[*Chunk]*queryCache)}
+}
+
+func (cc *ChunkCache) Clear() {
+	cc.mutex.Lock()
+	cc.cache = make(map[*Chunk]*queryCache)
+	cc.mutex.Unlock()
 }
 
 // Add adds the list to the cache

src/constants.go

@@ -2,7 +2,6 @@ package fzf
 
 import (
 	"math"
-	"os"
 	"time"
 
 	"github.com/junegunn/fzf/src/util"
@@ -15,6 +14,7 @@ const (
 
 	// Reader
 	readerBufferSize       = 64 * 1024
+	readerSlabSize         = 128 * 1024
 	readerPollIntervalMin  = 10 * time.Millisecond
 	readerPollIntervalStep = 5 * time.Millisecond
 	readerPollIntervalMax  = 50 * time.Millisecond
@@ -54,16 +54,6 @@ const (
 	defaultJumpLabels string = "asdfghjklqwertyuiopzxcvbnm1234567890ASDFGHJKLQWERTYUIOPZXCVBNM`~;:,<.>/?'\"!@#$%^&*()[{]}-_=+"
 )
 
-var defaultCommand string
-
-func init() {
-	if !util.IsWindows() {
-		defaultCommand = `set -o pipefail; command find -L . -mindepth 1 \( -path '*/.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \) -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-`
-	} else if os.Getenv("TERM") == "cygwin" {
-		defaultCommand = `sh -c "command find -L . -mindepth 1 -path '*/.*' -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-"`
-	}
-}
-
 // fzf events
 const (
 	EvtReadNew util.EventType = iota
@@ -77,9 +67,9 @@ const (
 )
 
 const (
-	exitCancel    = -1
-	exitOk        = 0
-	exitNoMatch   = 1
-	exitError     = 2
-	exitInterrupt = 130
+	ExitCancel    = -1
+	ExitOk        = 0
+	ExitNoMatch   = 1
+	ExitError     = 2
+	ExitInterrupt = 130
 )

src/core.go

@@ -2,8 +2,7 @@
 package fzf
 
 import (
-	"fmt"
-	"os"
+	"sync"
 	"time"
 
 	"github.com/junegunn/fzf/src/util"
@@ -19,19 +18,23 @@ Matcher  -> EvtHeader         -> Terminal (update header)
 */
 
 // Run starts fzf
-func Run(opts *Options, version string, revision string) {
+func Run(opts *Options) (int, error) {
+	if err := postProcessOptions(opts); err != nil {
+		return ExitError, err
+	}
+
+	defer util.RunAtExitFuncs()
+
+	// Output channel given
+	if opts.Output != nil {
+		opts.Printer = func(str string) {
+			opts.Output <- str
+		}
+	}
+
 	sort := opts.Sort > 0
 	sortCriteria = opts.Criteria
 
-	if opts.Version {
-		if len(revision) > 0 {
-			fmt.Printf("%s (%s)\n", version, revision)
-		} else {
-			fmt.Println(version)
-		}
-		os.Exit(exitOk)
-	}
-
 	// Event channel
 	eventBox := util.NewEventBox()
 
@@ -45,16 +48,16 @@ func Run(opts *Options, version string, revision string) {
 		if opts.Theme.Colored {
 			ansiProcessor = func(data []byte) (util.Chars, *[]ansiOffset) {
 				prevLineAnsiState = lineAnsiState
-				trimmed, offsets, newState := extractColor(string(data), lineAnsiState, nil)
+				trimmed, offsets, newState := extractColor(byteString(data), lineAnsiState, nil)
 				lineAnsiState = newState
-				return util.ToChars([]byte(trimmed)), offsets
+				return util.ToChars(stringBytes(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) (util.Chars, *[]ansiOffset) {
-				trimmed, _, _ := extractColor(string(data), nil, nil)
-				return util.ToChars([]byte(trimmed)), nil
+				trimmed, _, _ := extractColor(byteString(data), nil, nil)
+				return util.ToChars(stringBytes(trimmed)), nil
 			}
 		}
 	}
@@ -66,7 +69,7 @@ func Run(opts *Options, version string, revision string) {
 	if len(opts.WithNth) == 0 {
 		chunkList = NewChunkList(func(item *Item, data []byte) bool {
 			if len(header) < opts.HeaderLines {
-				header = append(header, string(data))
+				header = append(header, byteString(data))
 				eventBox.Set(EvtHeader, header)
 				return false
 			}
@@ -77,7 +80,7 @@ func Run(opts *Options, version string, revision string) {
 		})
 	} else {
 		chunkList = NewChunkList(func(item *Item, data []byte) bool {
-			tokens := Tokenize(string(data), opts.Delimiter)
+			tokens := Tokenize(byteString(data), opts.Delimiter)
 			if opts.Ansi && opts.Theme.Colored && len(tokens) > 1 {
 				var ansiState *ansiState
 				if prevLineAnsiState != nil {
@@ -101,7 +104,7 @@ func Run(opts *Options, version string, revision string) {
 				eventBox.Set(EvtHeader, header)
 				return false
 			}
-			item.text, item.colors = ansiProcessor([]byte(transformed))
+			item.text, item.colors = ansiProcessor(stringBytes(transformed))
 			item.text.TrimTrailingWhitespaces()
 			item.text.Index = itemIndex
 			item.origText = &data
@@ -110,14 +113,17 @@ func Run(opts *Options, version string, revision string) {
 		})
 	}
 
+	// Process executor
+	executor := util.NewExecutor(opts.WithShell)
+
 	// Reader
 	streamingFilter := opts.Filter != nil && !sort && !opts.Tac && !opts.Sync
 	var reader *Reader
 	if !streamingFilter {
 		reader = NewReader(func(data []byte) bool {
 			return chunkList.Push(data)
-		}, eventBox, opts.ReadZero, opts.Filter == nil)
-		go reader.ReadSource()
+		}, eventBox, executor, opts.ReadZero, opts.Filter == nil)
+		go reader.ReadSource(opts.Input, opts.WalkerRoot, opts.WalkerOpts, opts.WalkerSkip)
 	}
 
 	// Matcher
@@ -133,14 +139,16 @@ func Run(opts *Options, version string, revision string) {
 			forward = true
 		}
 	}
+	cache := NewChunkCache()
+	patternCache := make(map[string]*Pattern)
 	patternBuilder := func(runes []rune) *Pattern {
-		return BuildPattern(
+		return BuildPattern(cache, patternCache,
 			opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, opts.Normalize, forward, withPos,
 			opts.Filter == nil, opts.Nth, opts.Delimiter, runes)
 	}
 	inputRevision := 0
 	snapshotRevision := 0
-	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox, inputRevision)
+	matcher := NewMatcher(cache, patternBuilder, sort, opts.Tac, eventBox, inputRevision)
 
 	// Filtering mode
 	if opts.Filter != nil {
@@ -154,18 +162,21 @@ func Run(opts *Options, version string, revision string) {
 		found := false
 		if streamingFilter {
 			slab := util.MakeSlab(slab16Size, slab32Size)
+			mutex := sync.Mutex{}
 			reader := NewReader(
 				func(runes []byte) bool {
 					item := Item{}
 					if chunkList.trans(&item, runes) {
+						mutex.Lock()
 						if result, _, _ := pattern.MatchItem(&item, false, slab); result != nil {
 							opts.Printer(item.text.ToString())
 							found = true
 						}
+						mutex.Unlock()
 					}
 					return false
-				}, eventBox, opts.ReadZero, false)
-			reader.ReadSource()
+				}, eventBox, executor, opts.ReadZero, false)
+			reader.ReadSource(opts.Input, opts.WalkerRoot, opts.WalkerOpts, opts.WalkerSkip)
 		} else {
 			eventBox.Unwatch(EvtReadNew)
 			eventBox.WaitFor(EvtReadFin)
@@ -180,9 +191,9 @@ func Run(opts *Options, version string, revision string) {
 			}
 		}
 		if found {
-			os.Exit(exitOk)
+			return ExitOk, nil
 		}
-		os.Exit(exitNoMatch)
+		return ExitNoMatch, nil
 	}
 
 	// Synchronous search
@@ -193,14 +204,18 @@ func Run(opts *Options, version string, revision string) {
 
 	// Go interactive
 	go matcher.Loop()
+	defer matcher.Stop()
 
 	// Terminal I/O
-	terminal := NewTerminal(opts, eventBox)
+	terminal, err := NewTerminal(opts, eventBox, executor)
+	if err != nil {
+		return ExitError, err
+	}
 	maxFit := 0 // Maximum number of items that can fit on screen
 	padHeight := 0
 	heightUnknown := opts.Height.auto
 	if heightUnknown {
-		maxFit, padHeight = terminal.MaxFitAndPad(opts)
+		maxFit, padHeight = terminal.MaxFitAndPad()
 	}
 	deferred := opts.Select1 || opts.Exit0
 	go terminal.Loop()
@@ -212,7 +227,8 @@ func Run(opts *Options, version string, revision string) {
 	// Event coordination
 	reading := true
 	ticks := 0
-	var nextCommand *string
+	var nextCommand *commandSpec
+	var nextEnviron []string
 	eventBox.Watch(EvtReadNew)
 	total := 0
 	query := []rune{}
@@ -232,23 +248,23 @@ func Run(opts *Options, version string, revision string) {
 	useSnapshot := false
 	var snapshot []*Chunk
 	var count int
-	restart := func(command string) {
+	restart := func(command commandSpec, environ []string) {
 		reading = true
 		chunkList.Clear()
 		itemIndex = 0
 		inputRevision++
 		header = make([]string, 0, opts.HeaderLines)
-		go reader.restart(command)
+		go reader.restart(command, environ)
 	}
+
+	exitCode := ExitOk
+	stop := false
 	for {
 		delay := true
 		ticks++
 		input := func() []rune {
-			reloaded := snapshotRevision != inputRevision
 			paused, input := terminal.Input()
-			if reloaded && paused {
-				query = []rune{}
-			} else if !paused {
+			if !paused {
 				query = input
 			}
 			return query
@@ -263,11 +279,16 @@ func Run(opts *Options, version string, revision string) {
 					if reading {
 						reader.terminate()
 					}
-					os.Exit(value.(int))
+					quitSignal := value.(quitSignal)
+					exitCode = quitSignal.code
+					err = quitSignal.err
+					stop = true
+					return
 				case EvtReadNew, EvtReadFin:
 					if evt == EvtReadFin && nextCommand != nil {
-						restart(*nextCommand)
+						restart(*nextCommand, nextEnviron)
 						nextCommand = nil
+						nextEnviron = nil
 						break
 					} else {
 						reading = reading && evt == EvtReadNew
@@ -276,14 +297,16 @@ func Run(opts *Options, version string, revision string) {
 						useSnapshot = false
 					}
 					if !useSnapshot {
+						if snapshotRevision != inputRevision {
+							query = []rune{}
+						}
 						snapshot, count = chunkList.Snapshot()
 						snapshotRevision = inputRevision
 					}
 					total = count
 					terminal.UpdateCount(total, !reading, value.(*string))
 					if opts.Sync {
-						opts.Sync = false
-						terminal.UpdateList(PassMerger(&snapshot, opts.Tac, snapshotRevision))
+						terminal.UpdateList(PassMerger(&snapshot, opts.Tac, snapshotRevision), false)
 					}
 					if heightUnknown && !deferred {
 						determine(!reading)
@@ -291,12 +314,14 @@ func Run(opts *Options, version string, revision string) {
 					matcher.Reset(snapshot, input(), false, !reading, sort, snapshotRevision)
 
 				case EvtSearchNew:
-					var command *string
+					var command *commandSpec
+					var environ []string
 					var changed bool
 					switch val := value.(type) {
 					case searchRequest:
 						sort = val.sort
 						command = val.command
+						environ = val.environ
 						changed = val.changed
 						if command != nil {
 							useSnapshot = val.sync
@@ -306,18 +331,22 @@ func Run(opts *Options, version string, revision string) {
 						if reading {
 							reader.terminate()
 							nextCommand = command
+							nextEnviron = environ
 						} else {
-							restart(*command)
+							restart(*command, environ)
 						}
 					}
 					if !changed {
 						break
 					}
 					if !useSnapshot {
-						newSnapshot, _ := chunkList.Snapshot()
+						newSnapshot, newCount := chunkList.Snapshot()
 						// We want to avoid showing empty list when reload is triggered
 						// and the query string is changed at the same time i.e. command != nil && changed
-						if command == nil || len(newSnapshot) > 0 {
+						if command == nil || newCount > 0 {
+							if snapshotRevision != inputRevision {
+								query = []rune{}
+							}
 							snapshot = newSnapshot
 							snapshotRevision = inputRevision
 						}
@@ -354,20 +383,24 @@ func Run(opts *Options, version string, revision string) {
 									for i := 0; i < count; i++ {
 										opts.Printer(val.Get(i).item.AsString(opts.Ansi))
 									}
-									if count > 0 {
-										os.Exit(exitOk)
+									if count == 0 {
+										exitCode = ExitNoMatch
 									}
-									os.Exit(exitNoMatch)
+									stop = true
+									return
 								}
 								determine(val.final)
 							}
 						}
-						terminal.UpdateList(val)
+						terminal.UpdateList(val, true)
 					}
 				}
 			}
 			events.Clear()
 		})
+		if stop {
+			break
+		}
 		if delay && reading {
 			dur := util.DurWithin(
 				time.Duration(ticks)*coordinatorDelayStep,
@@ -375,4 +408,5 @@ func Run(opts *Options, version string, revision string) {
 			time.Sleep(dur)
 		}
 	}
+	return exitCode, err
 }

src/functions.go

@@ -0,0 +1,35 @@
+package fzf
+
+import (
+	"os"
+	"strings"
+	"unsafe"
+)
+
+func writeTemporaryFile(data []string, printSep string) string {
+	f, err := os.CreateTemp("", "fzf-preview-*")
+	if err != nil {
+		// Unable to create temporary file
+		// FIXME: Should we terminate the program?
+		return ""
+	}
+	defer f.Close()
+
+	f.WriteString(strings.Join(data, printSep))
+	f.WriteString(printSep)
+	return f.Name()
+}
+
+func removeFiles(files []string) {
+	for _, filename := range files {
+		os.Remove(filename)
+	}
+}
+
+func stringBytes(data string) []byte {
+	return unsafe.Slice(unsafe.StringData(data), len(data))
+}
+
+func byteString(data []byte) string {
+	return unsafe.String(unsafe.SliceData(data), len(data))
+}

src/matcher.go

@@ -21,6 +21,7 @@ type MatchRequest struct {
 
 // Matcher is responsible for performing search
 type Matcher struct {
+	cache          *ChunkCache
 	patternBuilder func([]rune) *Pattern
 	sort           bool
 	tac            bool
@@ -38,10 +39,11 @@ const (
 )
 
 // NewMatcher returns a new Matcher
-func NewMatcher(patternBuilder func([]rune) *Pattern,
+func NewMatcher(cache *ChunkCache, patternBuilder func([]rune) *Pattern,
 	sort bool, tac bool, eventBox *util.EventBox, revision int) *Matcher {
 	partitions := util.Min(numPartitionsMultiplier*runtime.NumCPU(), maxPartitions)
 	return &Matcher{
+		cache:          cache,
 		patternBuilder: patternBuilder,
 		sort:           sort,
 		tac:            tac,
@@ -60,8 +62,13 @@ func (m *Matcher) Loop() {
 	for {
 		var request MatchRequest
 
+		stop := false
 		m.reqBox.Wait(func(events *util.Events) {
-			for _, val := range *events {
+			for t, val := range *events {
+				if t == reqQuit {
+					stop = true
+					return
+				}
 				switch val := val.(type) {
 				case MatchRequest:
 					request = val
@@ -71,12 +78,15 @@ func (m *Matcher) Loop() {
 			}
 			events.Clear()
 		})
+		if stop {
+			break
+		}
 
 		if request.sort != m.sort || request.revision != m.revision {
 			m.sort = request.sort
 			m.revision = request.revision
 			m.mergerCache = make(map[string]*Merger)
-			clearChunkCache()
+			m.cache.Clear()
 		}
 
 		// Restart search
@@ -236,3 +246,7 @@ func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final
 	}
 	m.reqBox.Set(event, MatchRequest{chunks, pattern, final, sort && pattern.sortable, revision})
 }
+
+func (m *Matcher) Stop() {
+	m.reqBox.Set(reqQuit, nil)
+}

src/options_no_pprof.go

@@ -0,0 +1,13 @@
+//go:build !pprof
+// +build !pprof
+
+package fzf
+
+import "errors"
+
+func (o *Options) initProfiling() error {
+	if o.CPUProfile != "" || o.MEMProfile != "" || o.BlockProfile != "" || o.MutexProfile != "" {
+		return errors.New("error: profiling not supported: FZF must be built with '-tags=pprof' to enable profiling")
+	}
+	return nil
+}

src/options_pprof.go

@@ -0,0 +1,73 @@
+//go:build pprof
+// +build pprof
+
+package fzf
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"runtime/pprof"
+
+	"github.com/junegunn/fzf/src/util"
+)
+
+func (o *Options) initProfiling() error {
+	if o.CPUProfile != "" {
+		f, err := os.Create(o.CPUProfile)
+		if err != nil {
+			return fmt.Errorf("could not create CPU profile: %w", err)
+		}
+
+		if err := pprof.StartCPUProfile(f); err != nil {
+			return fmt.Errorf("could not start CPU profile: %w", err)
+		}
+
+		util.AtExit(func() {
+			pprof.StopCPUProfile()
+			if err := f.Close(); err != nil {
+				fmt.Fprintln(os.Stderr, "Error: closing cpu profile:", err)
+			}
+		})
+	}
+
+	stopProfile := func(name string, f *os.File) {
+		if err := pprof.Lookup(name).WriteTo(f, 0); err != nil {
+			fmt.Fprintf(os.Stderr, "Error: could not write %s profile: %v\n", name, err)
+		}
+		if err := f.Close(); err != nil {
+			fmt.Fprintf(os.Stderr, "Error: closing %s profile: %v\n", name, err)
+		}
+	}
+
+	if o.MEMProfile != "" {
+		f, err := os.Create(o.MEMProfile)
+		if err != nil {
+			return fmt.Errorf("could not create MEM profile: %w", err)
+		}
+		util.AtExit(func() {
+			runtime.GC()
+			stopProfile("allocs", f)
+		})
+	}
+
+	if o.BlockProfile != "" {
+		runtime.SetBlockProfileRate(1)
+		f, err := os.Create(o.BlockProfile)
+		if err != nil {
+			return fmt.Errorf("could not create BLOCK profile: %w", err)
+		}
+		util.AtExit(func() { stopProfile("block", f) })
+	}
+
+	if o.MutexProfile != "" {
+		runtime.SetMutexProfileFraction(1)
+		f, err := os.Create(o.MutexProfile)
+		if err != nil {
+			return fmt.Errorf("could not create MUTEX profile: %w", err)
+		}
+		util.AtExit(func() { stopProfile("mutex", f) })
+	}
+
+	return nil
+}

src/options_pprof_test.go

@@ -0,0 +1,89 @@
+//go:build pprof
+// +build pprof
+
+package fzf
+
+import (
+	"bytes"
+	"flag"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	"github.com/junegunn/fzf/src/util"
+)
+
+// runInitProfileTests is an internal flag used TestInitProfiling
+var runInitProfileTests = flag.Bool("test-init-profile", false, "run init profile tests")
+
+func TestInitProfiling(t *testing.T) {
+	if testing.Short() {
+		t.Skip("short test")
+	}
+
+	// Run this test in a separate process since it interferes with
+	// profiling and modifies the global atexit state. Without this
+	// running `go test -bench . -cpuprofile cpu.out` will fail.
+	if !*runInitProfileTests {
+		t.Parallel()
+
+		// Make sure we are not the child process.
+		if os.Getenv("_FZF_CHILD_PROC") != "" {
+			t.Fatal("already running as child process!")
+		}
+
+		cmd := exec.Command(os.Args[0],
+			"-test.timeout", "30s",
+			"-test.run", "^"+t.Name()+"$",
+			"-test-init-profile",
+		)
+		cmd.Env = append(os.Environ(), "_FZF_CHILD_PROC=1")
+
+		out, err := cmd.CombinedOutput()
+		out = bytes.TrimSpace(out)
+		if err != nil {
+			t.Fatalf("Child test process failed: %v:\n%s", err, out)
+		}
+		// Make sure the test actually ran
+		if bytes.Contains(out, []byte("no tests to run")) {
+			t.Fatalf("Failed to run test %q:\n%s", t.Name(), out)
+		}
+		return
+	}
+
+	// Child process
+
+	tempdir := t.TempDir()
+	t.Cleanup(util.RunAtExitFuncs)
+
+	o := Options{
+		CPUProfile:   filepath.Join(tempdir, "cpu.prof"),
+		MEMProfile:   filepath.Join(tempdir, "mem.prof"),
+		BlockProfile: filepath.Join(tempdir, "block.prof"),
+		MutexProfile: filepath.Join(tempdir, "mutex.prof"),
+	}
+	if err := o.initProfiling(); err != nil {
+		t.Fatal(err)
+	}
+
+	profiles := []string{
+		o.CPUProfile,
+		o.MEMProfile,
+		o.BlockProfile,
+		o.MutexProfile,
+	}
+	for _, name := range profiles {
+		if _, err := os.Stat(name); err != nil {
+			t.Errorf("Failed to create profile %s: %v", filepath.Base(name), err)
+		}
+	}
+
+	util.RunAtExitFuncs()
+
+	for _, name := range profiles {
+		if _, err := os.Stat(name); err != nil {
+			t.Errorf("Failed to write profile %s: %v", filepath.Base(name), err)
+		}
+	}
+}

src/options_test.go

@@ -80,7 +80,7 @@ func TestDelimiterRegexRegexCaret(t *testing.T) {
 
 func TestSplitNth(t *testing.T) {
 	{
-		ranges := splitNth("..")
+		ranges, _ := splitNth("..")
 		if len(ranges) != 1 ||
 			ranges[0].begin != rangeEllipsis ||
 			ranges[0].end != rangeEllipsis {
@@ -88,7 +88,7 @@ func TestSplitNth(t *testing.T) {
 		}
 	}
 	{
-		ranges := splitNth("..3,1..,2..3,4..-1,-3..-2,..,2,-2,2..-2,1..-1")
+		ranges, _ := splitNth("..3,1..,2..3,4..-1,-3..-2,..,2,-2,2..-2,1..-1")
 		if len(ranges) != 10 ||
 			ranges[0].begin != rangeEllipsis || ranges[0].end != 3 ||
 			ranges[1].begin != rangeEllipsis || ranges[1].end != rangeEllipsis ||
@@ -137,7 +137,7 @@ func TestIrrelevantNth(t *testing.T) {
 }
 
 func TestParseKeys(t *testing.T) {
-	pairs := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ctrl-alt-a,ALT-enter,alt-SPACE", "")
+	pairs, _ := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ctrl-alt-a,ALT-enter,alt-SPACE", "")
 	checkEvent := func(e tui.Event, s string) {
 		if pairs[e] != s {
 			t.Errorf("%s != %s", pairs[e], s)
@@ -163,35 +163,35 @@ func TestParseKeys(t *testing.T) {
 	checkEvent(tui.AltKey(' '), "alt-SPACE")
 
 	// Synonyms
-	pairs = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
+	pairs, _ = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
 	if len(pairs) != 9 {
 		t.Error(9)
 	}
 	check(tui.CtrlM, "Return")
 	checkEvent(tui.Key(' '), "space")
 	check(tui.Tab, "tab")
-	check(tui.BTab, "btab")
-	check(tui.ESC, "esc")
+	check(tui.ShiftTab, "btab")
+	check(tui.Esc, "esc")
 	check(tui.Up, "up")
 	check(tui.Down, "down")
 	check(tui.Left, "left")
 	check(tui.Right, "right")
 
-	pairs = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
+	pairs, _ = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
 	if len(pairs) != 11 {
 		t.Error(11)
 	}
 	check(tui.Tab, "Ctrl-I")
-	check(tui.PgUp, "page-up")
-	check(tui.PgDn, "Page-Down")
+	check(tui.PageUp, "page-up")
+	check(tui.PageDown, "Page-Down")
 	check(tui.Home, "Home")
 	check(tui.End, "End")
-	check(tui.AltBS, "Alt-BSpace")
-	check(tui.SLeft, "shift-left")
-	check(tui.SRight, "shift-right")
-	check(tui.BTab, "shift-tab")
+	check(tui.AltBackspace, "Alt-BSpace")
+	check(tui.ShiftLeft, "shift-left")
+	check(tui.ShiftRight, "shift-right")
+	check(tui.ShiftTab, "shift-tab")
 	check(tui.CtrlM, "Enter")
-	check(tui.BSpace, "bspace")
+	check(tui.Backspace, "bspace")
 }
 
 func TestParseKeysWithComma(t *testing.T) {
@@ -206,40 +206,40 @@ func TestParseKeysWithComma(t *testing.T) {
 		}
 	}
 
-	pairs := parseKeyChords(",", "")
+	pairs, _ := parseKeyChords(",", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords(",,a,b", "")
+	pairs, _ = parseKeyChords(",,a,b", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords("a,b,,", "")
+	pairs, _ = parseKeyChords("a,b,,", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords("a,,,b", "")
+	pairs, _ = parseKeyChords("a,,,b", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords("a,,,b,c", "")
+	pairs, _ = parseKeyChords("a,,,b,c", "")
 	checkN(len(pairs), 4)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key('c'), "c")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords(",,,", "")
+	pairs, _ = parseKeyChords(",,,", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords(",ALT-,,", "")
+	pairs, _ = parseKeyChords(",ALT-,,", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.AltKey(','), "ALT-,")
 }
@@ -262,17 +262,13 @@ func TestBind(t *testing.T) {
 		}
 	}
 	check(tui.CtrlA.AsEvent(), "", actBeginningOfLine)
-	errorString := ""
-	errorFn := func(e string) {
-		errorString = e
-	}
 	parseKeymap(keymap,
 		"ctrl-a:kill-line,ctrl-b:toggle-sort+up+down,c:page-up,alt-z:page-down,"+
 			"f1:execute(ls {+})+abort+execute(echo \n{+})+select-all,f2:execute/echo {}, {}, {}/,f3:execute[echo '({})'],f4:execute;less {};,"+
 			"alt-a:execute-Multi@echo (,),[,],/,:,;,%,{}@,alt-b:execute;echo (,),[,],/,:,@,%,{};,"+
 			"x:Execute(foo+bar),X:execute/bar+baz/"+
 			",f1:+first,f1:+top"+
-			",,:abort,::accept,+:execute:++\nfoobar,Y:execute(baz)+up", errorFn)
+			",,:abort,::accept,+:execute:++\nfoobar,Y:execute(baz)+up")
 	check(tui.CtrlA.AsEvent(), "", actKillLine)
 	check(tui.CtrlB.AsEvent(), "", actToggleSort, actUp, actDown)
 	check(tui.Key('c'), "", actPageUp)
@@ -290,20 +286,17 @@ func TestBind(t *testing.T) {
 	check(tui.Key('+'), "++\nfoobar,Y:execute(baz)+up", actExecute)
 
 	for idx, char := range []rune{'~', '!', '@', '#', '$', '%', '^', '&', '*', '|', ';', '/'} {
-		parseKeymap(keymap, fmt.Sprintf("%d:execute%cfoobar%c", idx%10, char, char), errorFn)
+		parseKeymap(keymap, fmt.Sprintf("%d:execute%cfoobar%c", idx%10, char, char))
 		check(tui.Key([]rune(fmt.Sprintf("%d", idx%10))[0]), "foobar", actExecute)
 	}
 
-	parseKeymap(keymap, "f1:abort", errorFn)
+	parseKeymap(keymap, "f1:abort")
 	check(tui.F1.AsEvent(), "", actAbort)
-	if len(errorString) > 0 {
-		t.Errorf("error parsing keymap: %s", errorString)
-	}
 }
 
 func TestColorSpec(t *testing.T) {
 	theme := tui.Dark256
-	dark := parseTheme(theme, "dark")
+	dark, _ := parseTheme(theme, "dark")
 	if *dark != *theme {
 		t.Errorf("colors should be equivalent")
 	}
@@ -311,7 +304,7 @@ func TestColorSpec(t *testing.T) {
 		t.Errorf("point should not be equivalent")
 	}
 
-	light := parseTheme(theme, "dark,light")
+	light, _ := parseTheme(theme, "dark,light")
 	if *light == *theme {
 		t.Errorf("should not be equivalent")
 	}
@@ -322,7 +315,7 @@ func TestColorSpec(t *testing.T) {
 		t.Errorf("point should not be equivalent")
 	}
 
-	customized := parseTheme(theme, "fg:231,bg:232")
+	customized, _ := parseTheme(theme, "fg:231,bg:232")
 	if customized.Fg.Color != 231 || customized.Bg.Color != 232 {
 		t.Errorf("color not customized")
 	}
@@ -335,7 +328,7 @@ func TestColorSpec(t *testing.T) {
 		t.Errorf("colors should now be equivalent: %v, %v", tui.Dark256, customized)
 	}
 
-	customized = parseTheme(theme, "fg:231,dark,bg:232")
+	customized, _ = parseTheme(theme, "fg:231,dark,bg:232")
 	if customized.Fg != tui.Dark256.Fg || customized.Bg == tui.Dark256.Bg {
 		t.Errorf("color not customized")
 	}
@@ -475,7 +468,7 @@ func TestValidateSign(t *testing.T) {
 }
 
 func TestParseSingleActionList(t *testing.T) {
-	actions := parseSingleActionList("Execute@foo+bar,baz@+up+up+reload:down+down", func(string) {})
+	actions, _ := parseSingleActionList("Execute@foo+bar,baz@+up+up+reload:down+down")
 	if len(actions) != 4 {
 		t.Errorf("Invalid number of actions parsed:%d", len(actions))
 	}
@@ -491,11 +484,8 @@ func TestParseSingleActionList(t *testing.T) {
 }
 
 func TestParseSingleActionListError(t *testing.T) {
-	err := ""
-	parseSingleActionList("change-query(foobar)baz", func(e string) {
-		err = e
-	})
-	if len(err) == 0 {
+	_, err := parseSingleActionList("change-query(foobar)baz")
+	if err == nil {
 		t.Errorf("Failed to detect error")
 	}
 }

src/pattern.go

@@ -60,32 +60,17 @@ type Pattern struct {
 	delimiter     Delimiter
 	nth           []Range
 	procFun       map[termType]algo.Algo
+	cache         *ChunkCache
 }
 
-var (
-	_patternCache map[string]*Pattern
-	_splitRegex   *regexp.Regexp
-	_cache        ChunkCache
-)
+var _splitRegex *regexp.Regexp
 
 func init() {
 	_splitRegex = regexp.MustCompile(" +")
-	clearPatternCache()
-	clearChunkCache()
-}
-
-func clearPatternCache() {
-	// We can uniquely identify the pattern for a given string since
-	// search mode and caseMode do not change while the program is running
-	_patternCache = make(map[string]*Pattern)
-}
-
-func clearChunkCache() {
-	_cache = NewChunkCache()
 }
 
 // BuildPattern builds Pattern object from the given arguments
-func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
+func BuildPattern(cache *ChunkCache, patternCache map[string]*Pattern, fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
 	withPos bool, cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
 
 	var asString string
@@ -98,7 +83,9 @@ func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case,
 		asString = string(runes)
 	}
 
-	cached, found := _patternCache[asString]
+	// We can uniquely identify the pattern for a given string since
+	// search mode and caseMode do not change while the program is running
+	cached, found := patternCache[asString]
 	if found {
 		return cached
 	}
@@ -153,6 +140,7 @@ func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case,
 		cacheable:     cacheable,
 		nth:           nth,
 		delimiter:     delimiter,
+		cache:         cache,
 		procFun:       make(map[termType]algo.Algo)}
 
 	ptr.cacheKey = ptr.buildCacheKey()
@@ -162,7 +150,7 @@ func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case,
 	ptr.procFun[termPrefix] = algo.PrefixMatch
 	ptr.procFun[termSuffix] = algo.SuffixMatch
 
-	_patternCache[asString] = ptr
+	patternCache[asString] = ptr
 	return ptr
 }
 
@@ -209,11 +197,10 @@ func parseTerms(fuzzy bool, caseMode Case, normalize bool, str string) []termSet
 			// Flip exactness
 			if fuzzy && !inv {
 				typ = termExact
-				text = text[1:]
 			} else {
 				typ = termFuzzy
-				text = text[1:]
 			}
+			text = text[1:]
 		} else if strings.HasPrefix(text, "^") {
 			if typ == termSuffix {
 				typ = termEqual
@@ -283,18 +270,18 @@ func (p *Pattern) Match(chunk *Chunk, slab *util.Slab) []Result {
 	// ChunkCache: Exact match
 	cacheKey := p.CacheKey()
 	if p.cacheable {
-		if cached := _cache.Lookup(chunk, cacheKey); cached != nil {
+		if cached := p.cache.Lookup(chunk, cacheKey); cached != nil {
 			return cached
 		}
 	}
 
 	// Prefix/suffix cache
-	space := _cache.Search(chunk, cacheKey)
+	space := p.cache.Search(chunk, cacheKey)
 
 	matches := p.matchChunk(chunk, space, slab)
 
 	if p.cacheable {
-		_cache.Add(chunk, cacheKey, matches)
+		p.cache.Add(chunk, cacheKey, matches)
 	}
 	return matches
 }

src/pattern_test.go

@@ -64,10 +64,15 @@ func TestParseTermsEmpty(t *testing.T) {
 	}
 }
 
+func buildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
+	withPos bool, cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
+	return BuildPattern(NewChunkCache(), make(map[string]*Pattern),
+		fuzzy, fuzzyAlgo, extended, caseMode, normalize, forward,
+		withPos, cacheable, nth, delimiter, runes)
+}
+
 func TestExact(t *testing.T) {
-	defer clearPatternCache()
-	clearPatternCache()
-	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true,
+	pattern := buildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true,
 		[]Range{}, Delimiter{}, []rune("'abc"))
 	chars := util.ToChars([]byte("aabbcc abc"))
 	res, pos := algo.ExactMatchNaive(
@@ -81,9 +86,7 @@ func TestExact(t *testing.T) {
 }
 
 func TestEqual(t *testing.T) {
-	defer clearPatternCache()
-	clearPatternCache()
-	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("^AbC$"))
+	pattern := buildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("^AbC$"))
 
 	match := func(str string, sidxExpected int, eidxExpected int) {
 		chars := util.ToChars([]byte(str))
@@ -104,19 +107,12 @@ func TestEqual(t *testing.T) {
 }
 
 func TestCaseSensitivity(t *testing.T) {
-	defer clearPatternCache()
-	clearPatternCache()
-	pat1 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
-	pat2 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
-	clearPatternCache()
-	pat3 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
-	pat4 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
-	clearPatternCache()
-	pat5 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
-	pat6 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat1 := buildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat2 := buildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat3 := buildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat4 := buildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat5 := buildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat6 := buildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
 
 	if string(pat1.text) != "abc" || pat1.caseSensitive != false ||
 		string(pat2.text) != "Abc" || pat2.caseSensitive != true ||
@@ -129,7 +125,7 @@ func TestCaseSensitivity(t *testing.T) {
 }
 
 func TestOrigTextAndTransformed(t *testing.T) {
-	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("jg"))
+	pattern := buildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("jg"))
 	tokens := Tokenize("junegunn", Delimiter{})
 	trans := Transform(tokens, []Range{{1, 1}})
 
@@ -163,15 +159,13 @@ func TestOrigTextAndTransformed(t *testing.T) {
 
 func TestCacheKey(t *testing.T) {
 	test := func(extended bool, patStr string, expected string, cacheable bool) {
-		clearPatternCache()
-		pat := BuildPattern(true, algo.FuzzyMatchV2, extended, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune(patStr))
+		pat := buildPattern(true, algo.FuzzyMatchV2, extended, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune(patStr))
 		if pat.CacheKey() != expected {
 			t.Errorf("Expected: %s, actual: %s", expected, pat.CacheKey())
 		}
 		if pat.cacheable != cacheable {
 			t.Errorf("Expected: %t, actual: %t (%s)", cacheable, pat.cacheable, patStr)
 		}
-		clearPatternCache()
 	}
 	test(false, "foo !bar", "foo !bar", true)
 	test(false, "foo | bar !baz", "foo | bar !baz", true)
@@ -187,15 +181,13 @@ func TestCacheKey(t *testing.T) {
 
 func TestCacheable(t *testing.T) {
 	test := func(fuzzy bool, str string, expected string, cacheable bool) {
-		clearPatternCache()
-		pat := BuildPattern(fuzzy, algo.FuzzyMatchV2, true, CaseSmart, true, true, false, true, []Range{}, Delimiter{}, []rune(str))
+		pat := buildPattern(fuzzy, algo.FuzzyMatchV2, true, CaseSmart, true, true, false, true, []Range{}, Delimiter{}, []rune(str))
 		if pat.CacheKey() != expected {
 			t.Errorf("Expected: %s, actual: %s", expected, pat.CacheKey())
 		}
 		if cacheable != pat.cacheable {
 			t.Errorf("Invalid Pattern.cacheable for \"%s\": %v (expected: %v)", str, pat.cacheable, cacheable)
 		}
-		clearPatternCache()
 	}
 	test(true, "foo bar", "foo\tbar", true)
 	test(true, "foo 'bar", "foo\tbar", false)

src/protector/protector.go

@@ -3,6 +3,4 @@
 package protector
 
 // Protect calls OS specific protections like pledge on OpenBSD
-func Protect() {
-	return
-}
+func Protect() {}

src/protector/protector_openbsd.go

@@ -6,5 +6,5 @@ import "golang.org/x/sys/unix"
 
 // Protect calls OS specific protections like pledge on OpenBSD
 func Protect() {
-	unix.PledgePromises("stdio rpath tty proc exec inet")
+	unix.PledgePromises("stdio rpath tty proc exec inet tmppath")
 }

src/reader.go

@@ -1,24 +1,24 @@
 package fzf
 
 import (
-	"bufio"
+	"bytes"
 	"context"
 	"io"
 	"os"
 	"os/exec"
-	"path"
 	"path/filepath"
 	"sync"
 	"sync/atomic"
 	"time"
 
+	"github.com/charlievieth/fastwalk"
 	"github.com/junegunn/fzf/src/util"
-	"github.com/saracen/walker"
 )
 
 // Reader reads from command or standard input
 type Reader struct {
 	pusher   func([]byte) bool
+	executor *util.Executor
 	eventBox *util.EventBox
 	delimNil bool
 	event    int32
@@ -31,8 +31,8 @@ type Reader struct {
 }
 
 // NewReader returns new Reader object
-func NewReader(pusher func([]byte) bool, eventBox *util.EventBox, delimNil bool, wait bool) *Reader {
-	return &Reader{pusher, eventBox, delimNil, int32(EvtReady), make(chan bool, 1), sync.Mutex{}, nil, nil, false, wait}
+func NewReader(pusher func([]byte) bool, eventBox *util.EventBox, executor *util.Executor, delimNil bool, wait bool) *Reader {
+	return &Reader{pusher, executor, eventBox, delimNil, int32(EvtReady), make(chan bool, 1), sync.Mutex{}, nil, nil, false, wait}
 }
 
 func (r *Reader) startEventPoller() {
@@ -77,48 +77,49 @@ func (r *Reader) fin(success bool) {
 
 func (r *Reader) terminate() {
 	r.mutex.Lock()
-	defer func() { r.mutex.Unlock() }()
-
 	r.killed = true
 	if r.exec != nil && r.exec.Process != nil {
 		util.KillCommand(r.exec)
-	} else if defaultCommand != "" {
+	} else {
 		os.Stdin.Close()
 	}
+	r.mutex.Unlock()
 }
 
-func (r *Reader) restart(command string) {
+func (r *Reader) restart(command commandSpec, environ []string) {
 	r.event = int32(EvtReady)
 	r.startEventPoller()
-	success := r.readFromCommand(nil, command)
+	success := r.readFromCommand(command.command, environ)
 	r.fin(success)
+	removeFiles(command.tempFiles)
+}
+
+func (r *Reader) readChannel(inputChan chan string) bool {
+	for {
+		item, more := <-inputChan
+		if !more {
+			break
+		}
+		if r.pusher([]byte(item)) {
+			atomic.StoreInt32(&r.event, int32(EvtReadNew))
+		}
+	}
+	return true
 }
 
 // ReadSource reads data from the default command or from standard input
-func (r *Reader) ReadSource() {
+func (r *Reader) ReadSource(inputChan chan string, root string, opts walkerOpts, ignores []string) {
 	r.startEventPoller()
 	var success bool
-	if util.IsTty() {
-		// The default command for *nix requires a shell that supports "pipefail"
-		// https://unix.stackexchange.com/a/654932/62171
-		shell := "bash"
-		currentShell := os.Getenv("SHELL")
-		currentShellName := path.Base(currentShell)
-		for _, shellName := range []string{"bash", "zsh", "ksh", "ash", "hush", "mksh", "yash"} {
-			if currentShellName == shellName {
-				shell = currentShell
-				break
-			}
-		}
+	if inputChan != nil {
+		success = r.readChannel(inputChan)
+	} else if util.IsTty() {
 		cmd := os.Getenv("FZF_DEFAULT_COMMAND")
 		if len(cmd) == 0 {
-			if defaultCommand != "" {
-				success = r.readFromCommand(&shell, defaultCommand)
-			} else {
-				success = r.readFiles()
-			}
+			success = r.readFiles(root, opts, ignores)
 		} else {
-			success = r.readFromCommand(nil, cmd)
+			// We can't export FZF_* environment variables to the default command
+			success = r.readFromCommand(cmd, nil)
 		}
 	} else {
 		success = r.readFromStdin()
@@ -127,32 +128,90 @@ func (r *Reader) ReadSource() {
 }
 
 func (r *Reader) feed(src io.Reader) {
+	/*
+		readerSlabSize, ae := strconv.Atoi(os.Getenv("SLAB_KB"))
+		if ae != nil {
+			readerSlabSize = 128 * 1024
+		} else {
+			readerSlabSize *= 1024
+		}
+		readerBufferSize, be := strconv.Atoi(os.Getenv("BUF_KB"))
+		if be != nil {
+			readerBufferSize = 64 * 1024
+		} else {
+			readerBufferSize *= 1024
+		}
+	*/
+
 	delim := byte('\n')
+	trimCR := util.IsWindows()
 	if r.delimNil {
 		delim = '\000'
+		trimCR = false
 	}
-	reader := bufio.NewReaderSize(src, readerBufferSize)
+
+	slab := make([]byte, readerSlabSize)
+	leftover := []byte{}
+	var err error
 	for {
-		// ReadBytes returns err != nil if and only if the returned data does not
-		// end in delim.
-		bytea, err := reader.ReadBytes(delim)
-		byteaLen := len(bytea)
-		if byteaLen > 0 {
-			if err == nil {
-				// get rid of carriage return if under Windows:
-				if util.IsWindows() && byteaLen >= 2 && bytea[byteaLen-2] == byte('\r') {
-					bytea = bytea[:byteaLen-2]
-				} else {
-					bytea = bytea[:byteaLen-1]
-				}
-			}
-			if r.pusher(bytea) {
-				atomic.StoreInt32(&r.event, int32(EvtReadNew))
+		n := 0
+		scope := slab[:util.Min(len(slab), readerBufferSize)]
+		for i := 0; i < 100; i++ {
+			n, err = src.Read(scope)
+			if n > 0 || err != nil {
+				break
 			}
 		}
-		if err != nil {
+
+		// We're not making any progress after 100 tries. Stop.
+		if n == 0 {
 			break
 		}
+
+		buf := slab[:n]
+		slab = slab[n:]
+
+		for len(buf) > 0 {
+			if i := bytes.IndexByte(buf, delim); i >= 0 {
+				// Found the delimiter
+				slice := buf[:i+1]
+				buf = buf[i+1:]
+				if trimCR && len(slice) >= 2 && slice[len(slice)-2] == byte('\r') {
+					slice = slice[:len(slice)-2]
+				} else {
+					slice = slice[:len(slice)-1]
+				}
+				if len(leftover) > 0 {
+					slice = append(leftover, slice...)
+					leftover = []byte{}
+				}
+				if (err == nil || len(slice) > 0) && r.pusher(slice) {
+					atomic.StoreInt32(&r.event, int32(EvtReadNew))
+				}
+			} else {
+				// Could not find the delimiter in the buffer
+				//   NOTE: We can further optimize this by keeping track of the cursor
+				//   position in the slab so that a straddling item that doesn't go
+				//   beyond the boundary of a slab doesn't need to be copied to
+				//   another buffer. However, the performance gain is negligible in
+				//   practice (< 0.1%) and is not
+				//   worth the added complexity.
+				leftover = append(leftover, buf...)
+				break
+			}
+		}
+
+		if err == io.EOF {
+			leftover = append(leftover, buf...)
+			break
+		}
+
+		if len(slab) == 0 {
+			slab = make([]byte, readerSlabSize)
+		}
+	}
+	if len(leftover) > 0 && r.pusher(leftover) {
+		atomic.StoreInt32(&r.event, int32(EvtReadNew))
 	}
 }
 
@@ -161,16 +220,28 @@ func (r *Reader) readFromStdin() bool {
 	return true
 }
 
-func (r *Reader) readFiles() bool {
+func (r *Reader) readFiles(root string, opts walkerOpts, ignores []string) bool {
 	r.killed = false
-	fn := func(path string, mode os.FileInfo) error {
+	conf := fastwalk.Config{Follow: opts.follow}
+	fn := func(path string, de os.DirEntry, err error) error {
+		if err != nil {
+			return nil
+		}
 		path = filepath.Clean(path)
 		if path != "." {
-			isDir := mode.Mode().IsDir()
-			if isDir && filepath.Base(path)[0] == '.' {
-				return filepath.SkipDir
+			isDir := de.IsDir()
+			if isDir {
+				base := filepath.Base(path)
+				if !opts.hidden && base[0] == '.' {
+					return filepath.SkipDir
+				}
+				for _, ignore := range ignores {
+					if ignore == base {
+						return filepath.SkipDir
+					}
+				}
 			}
-			if !isDir && r.pusher([]byte(path)) {
+			if ((opts.file && !isDir) || (opts.dir && isDir)) && r.pusher([]byte(path)) {
 				atomic.StoreInt32(&r.event, int32(EvtReadNew))
 			}
 		}
@@ -181,20 +252,16 @@ func (r *Reader) readFiles() bool {
 		}
 		return nil
 	}
-	cb := walker.WithErrorCallback(func(pathname string, err error) error {
-		return nil
-	})
-	return walker.Walk(".", fn, cb) == nil
+	return fastwalk.Walk(&conf, root, fn) == nil
 }
 
-func (r *Reader) readFromCommand(shell *string, command string) bool {
+func (r *Reader) readFromCommand(command string, environ []string) bool {
 	r.mutex.Lock()
 	r.killed = false
 	r.command = &command
-	if shell != nil {
-		r.exec = util.ExecCommandWith(*shell, command, true)
-	} else {
-		r.exec = util.ExecCommand(command, true)
+	r.exec = r.executor.ExecCommand(command, true)
+	if environ != nil {
+		r.exec.Env = environ
 	}
 	out, err := r.exec.StdoutPipe()
 	if err != nil {

src/reader_test.go

@@ -10,9 +10,10 @@ import (
 func TestReadFromCommand(t *testing.T) {
 	strs := []string{}
 	eb := util.NewEventBox()
+	exec := util.NewExecutor("")
 	reader := NewReader(
 		func(s []byte) bool { strs = append(strs, string(s)); return true },
-		eb, false, true)
+		eb, exec, false, true)
 
 	reader.startEventPoller()
 
@@ -22,7 +23,7 @@ func TestReadFromCommand(t *testing.T) {
 	}
 
 	// Normal command
-	reader.fin(reader.readFromCommand(nil, `echo abc&&echo def`))
+	reader.fin(reader.readFromCommand(`echo abc&&echo def`, nil))
 	if len(strs) != 2 || strs[0] != "abc" || strs[1] != "def" {
 		t.Errorf("%s", strs)
 	}
@@ -47,7 +48,7 @@ func TestReadFromCommand(t *testing.T) {
 	reader.startEventPoller()
 
 	// Failing command
-	reader.fin(reader.readFromCommand(nil, `no-such-command`))
+	reader.fin(reader.readFromCommand(`no-such-command`, nil))
 	strs = []string{}
 	if len(strs) > 0 {
 		t.Errorf("%s", strs)

src/result.go

@@ -80,7 +80,7 @@ func buildResult(item *Item, offsets []Offset, score int) Result {
 				if criterion == byBegin {
 					val = util.AsUint16(minEnd - whitePrefixLen)
 				} else {
-					val = util.AsUint16(math.MaxUint16 - math.MaxUint16*(maxEnd-whitePrefixLen)/int(item.TrimLength()))
+					val = util.AsUint16(math.MaxUint16 - math.MaxUint16*(maxEnd-whitePrefixLen)/int(item.TrimLength()+1))
 				}
 			}
 		}
@@ -138,7 +138,9 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 		for i := off[0]; i < off[1]; i++ {
 			// Negative of 1-based index of itemColors
 			// - The extra -1 means highlighted
-			cols[i] = cols[i]*-1 - 1
+			if cols[i] >= 0 {
+				cols[i] = cols[i]*-1 - 1
+			}
 		}
 	}
 

src/result_test.go

@@ -120,7 +120,7 @@ func TestColorOffset(t *testing.T) {
 	//   ++++++++        ++++++++++
 	// --++++++++--    --++++++++++---
 
-	offsets := []Offset{{5, 15}, {25, 35}}
+	offsets := []Offset{{5, 15}, {10, 12}, {25, 35}}
 	item := Result{
 		item: &Item{
 			colors: &[]ansiOffset{

src/server.go

@@ -30,7 +30,10 @@ const (
 	httpOk           = "HTTP/1.1 200 OK" + crlf
 	httpBadRequest   = "HTTP/1.1 400 Bad Request" + crlf
 	httpUnauthorized = "HTTP/1.1 401 Unauthorized" + crlf
+	httpUnavailable  = "HTTP/1.1 503 Service Unavailable" + crlf
 	httpReadTimeout  = 10 * time.Second
+	channelTimeout   = 2 * time.Second
+	jsonContentType  = "Content-Type: application/json" + crlf
 	maxContentLength = 1024 * 1024
 )
 
@@ -51,47 +54,47 @@ func (addr listenAddress) IsLocal() bool {
 
 var defaultListenAddr = listenAddress{"localhost", 0}
 
-func parseListenAddress(address string) (error, listenAddress) {
+func parseListenAddress(address string) (listenAddress, error) {
 	parts := strings.SplitN(address, ":", 3)
 	if len(parts) == 1 {
 		parts = []string{"localhost", parts[0]}
 	}
 	if len(parts) != 2 {
-		return fmt.Errorf("invalid listen address: %s", address), defaultListenAddr
+		return defaultListenAddr, fmt.Errorf("invalid listen address: %s", address)
 	}
 	portStr := parts[len(parts)-1]
 	port, err := strconv.Atoi(portStr)
 	if err != nil || port < 0 || port > 65535 {
-		return fmt.Errorf("invalid listen port: %s", portStr), defaultListenAddr
+		return defaultListenAddr, fmt.Errorf("invalid listen port: %s", portStr)
 	}
 	if len(parts[0]) == 0 {
 		parts[0] = "localhost"
 	}
-	return nil, listenAddress{parts[0], port}
+	return listenAddress{parts[0], port}, nil
 }
 
-func startHttpServer(address listenAddress, actionChannel chan []*action, responseChannel chan string) (error, int) {
+func startHttpServer(address listenAddress, actionChannel chan []*action, responseChannel chan string) (net.Listener, int, error) {
 	host := address.host
 	port := address.port
 	apiKey := os.Getenv("FZF_API_KEY")
 	if !address.IsLocal() && len(apiKey) == 0 {
-		return fmt.Errorf("FZF_API_KEY is required to allow remote access"), port
+		return nil, port, errors.New("FZF_API_KEY is required to allow remote access")
 	}
 	addrStr := fmt.Sprintf("%s:%d", host, port)
 	listener, err := net.Listen("tcp", addrStr)
 	if err != nil {
-		return fmt.Errorf("failed to listen on %s", addrStr), port
+		return nil, port, fmt.Errorf("failed to listen on %s", addrStr)
 	}
 	if port == 0 {
 		addr := listener.Addr().String()
 		parts := strings.Split(addr, ":")
 		if len(parts) < 2 {
-			return fmt.Errorf("cannot extract port: %s", addr), port
+			return nil, port, fmt.Errorf("cannot extract port: %s", addr)
 		}
 		var err error
 		port, err = strconv.Atoi(parts[len(parts)-1])
 		if err != nil {
-			return err, port
+			return nil, port, err
 		}
 	}
 
@@ -106,18 +109,16 @@ func startHttpServer(address listenAddress, actionChannel chan []*action, respon
 			conn, err := listener.Accept()
 			if err != nil {
 				if errors.Is(err, net.ErrClosed) {
-					break
-				} else {
-					continue
+					return
 				}
+				continue
 			}
 			conn.Write([]byte(server.handleHttpRequest(conn)))
 			conn.Close()
 		}
-		listener.Close()
 	}()
 
-	return nil, port
+	return listener, port, nil
 }
 
 // Here we are writing a simplistic HTTP server without using net/http
@@ -141,7 +142,7 @@ func (server *httpServer) handleHttpRequest(conn net.Conn) string {
 		return answer(httpBadRequest, message)
 	}
 	good := func(message string) string {
-		return answer(httpOk+"Content-Type: application/json"+crlf, message)
+		return answer(httpOk+jsonContentType, message)
 	}
 	conn.SetReadDeadline(time.Now().Add(httpReadTimeout))
 	scanner := bufio.NewScanner(conn)
@@ -165,8 +166,16 @@ func (server *httpServer) handleHttpRequest(conn net.Conn) string {
 			getMatch := getRegex.FindStringSubmatch(text)
 			if len(getMatch) > 0 {
 				server.actionChannel <- []*action{{t: actResponse, a: getMatch[1]}}
-				response := <-server.responseChannel
-				return good(response)
+				select {
+				case response := <-server.responseChannel:
+					return good(response)
+				case <-time.After(channelTimeout):
+					go func() {
+						// Drain the channel
+						<-server.responseChannel
+					}()
+					return answer(httpUnavailable+jsonContentType, `{"error":"timeout"}`)
+				}
 			} else if !strings.HasPrefix(text, "POST / HTTP") {
 				return bad("invalid request method")
 			}
@@ -206,19 +215,20 @@ func (server *httpServer) handleHttpRequest(conn net.Conn) string {
 	}
 	body = body[:contentLength]
 
-	errorMessage := ""
-	actions := parseSingleActionList(strings.Trim(string(body), "\r\n"), func(message string) {
-		errorMessage = message
-	})
-	if len(errorMessage) > 0 {
-		return bad(errorMessage)
+	actions, err := parseSingleActionList(strings.Trim(string(body), "\r\n"))
+	if err != nil {
+		return bad(err.Error())
 	}
 	if len(actions) == 0 {
 		return bad("no action specified")
 	}
 
-	server.actionChannel <- actions
-	return httpOk
+	select {
+	case server.actionChannel <- actions:
+	case <-time.After(channelTimeout):
+		return httpUnavailable + crlf
+	}
+	return httpOk + crlf
 }
 
 func parseGetParams(query string) getParams {
@@ -227,15 +237,13 @@ func parseGetParams(query string) getParams {
 		parts := strings.SplitN(pair, "=", 2)
 		if len(parts) == 2 {
 			switch parts[0] {
-			case "limit":
-				val, err := strconv.Atoi(parts[1])
-				if err == nil {
-					params.limit = val
-				}
-			case "offset":
-				val, err := strconv.Atoi(parts[1])
-				if err == nil {
-					params.offset = val
+			case "limit", "offset":
+				if val, err := strconv.Atoi(parts[1]); err == nil {
+					if parts[0] == "limit" {
+						params.limit = val
+					} else {
+						params.offset = val
+					}
 				}
 			}
 		}

src/terminal_test.go

@@ -12,6 +12,22 @@ import (
 	"github.com/junegunn/fzf/src/util"
 )
 
+func replacePlaceholderTest(template string, stripAnsi bool, delimiter Delimiter, printsep string, forcePlus bool, query string, allItems []*Item) string {
+	replaced, _ := replacePlaceholder(replacePlaceholderParams{
+		template:   template,
+		stripAnsi:  stripAnsi,
+		delimiter:  delimiter,
+		printsep:   printsep,
+		forcePlus:  forcePlus,
+		query:      query,
+		allItems:   allItems,
+		lastAction: actBackwardDeleteCharEof,
+		prompt:     "prompt",
+		executor:   util.NewExecutor(""),
+	})
+	return replaced
+}
+
 func TestReplacePlaceholder(t *testing.T) {
 	item1 := newItem("  foo'bar \x1b[31mbaz\x1b[m")
 	items1 := []*Item{item1, item1}
@@ -52,90 +68,90 @@ func TestReplacePlaceholder(t *testing.T) {
 	*/
 
 	// {}, preserve ansi
-	result = replacePlaceholder("echo {}", false, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}", false, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar \x1b[31mbaz\x1b[m{{.O}}")
 
 	// {}, strip ansi
-	result = replacePlaceholder("echo {}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}")
 
 	// {}, with multiple items
-	result = replacePlaceholder("echo {}", true, Delimiter{}, printsep, false, "query", items2)
+	result = replacePlaceholderTest("echo {}", true, Delimiter{}, printsep, false, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}}")
 
 	// {..}, strip leading whitespaces, preserve ansi
-	result = replacePlaceholder("echo {..}", false, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {..}", false, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}foo{{.I}}bar \x1b[31mbaz\x1b[m{{.O}}")
 
 	// {..}, strip leading whitespaces, strip ansi
-	result = replacePlaceholder("echo {..}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {..}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}}")
 
 	// {q}
-	result = replacePlaceholder("echo {} {q}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {} {q}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}} {{.O}}query{{.O}}")
 
 	// {q}, multiple items
-	result = replacePlaceholder("echo {+}{q}{+}", true, Delimiter{}, printsep, false, "query 'string'", items2)
+	result = replacePlaceholderTest("echo {+}{q}{+}", true, Delimiter{}, printsep, false, "query 'string'", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}{{.O}}query {{.I}}string{{.I}}{{.O}}{{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}")
 
-	result = replacePlaceholder("echo {}{q}{}", true, Delimiter{}, printsep, false, "query 'string'", items2)
+	result = replacePlaceholderTest("echo {}{q}{}", true, Delimiter{}, printsep, false, "query 'string'", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}}{{.O}}query {{.I}}string{{.I}}{{.O}}{{.O}}foo{{.I}}bar baz{{.O}}")
 
-	result = replacePlaceholder("echo {1}/{2}/{2,1}/{-1}/{-2}/{}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {1}/{2}/{2,1}/{-1}/{-2}/{}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}}/{{.O}}baz{{.O}}/{{.O}}bazfoo{{.I}}bar{{.O}}/{{.O}}baz{{.O}}/{{.O}}foo{{.I}}bar{{.O}}/{{.O}}  foo{{.I}}bar baz{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}}")
 
-	result = replacePlaceholder("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items2)
+	result = replacePlaceholderTest("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}}/{{.O}}baz{{.O}}/{{.O}}baz{{.O}}/{{.O}}foo{{.I}}bar{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}}")
 
-	result = replacePlaceholder("echo {+1}/{+2}/{+-1}/{+-2}/{+..}/{n.t}/\\{}/\\{1}/\\{q}/{+3}", true, Delimiter{}, printsep, false, "query", items2)
+	result = replacePlaceholderTest("echo {+1}/{+2}/{+-1}/{+-2}/{+..}/{n.t}/\\{}/\\{1}/\\{q}/{+3}", true, Delimiter{}, printsep, false, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}} {{.O}}{{.O}}")
 
 	// forcePlus
-	result = replacePlaceholder("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, true, "query", items2)
+	result = replacePlaceholderTest("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, true, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}} {{.O}}{{.O}}")
 
 	// Whitespace preserving flag with "'" delimiter
-	result = replacePlaceholder("echo {s1}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s1}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.O}}")
 
-	result = replacePlaceholder("echo {s2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}bar baz{{.O}}")
 
-	result = replacePlaceholder("echo {s}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}")
 
-	result = replacePlaceholder("echo {s..}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s..}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}")
 
 	// Whitespace preserving flag with regex delimiter
 	regex = regexp.MustCompile(`\w+`)
 
-	result = replacePlaceholder("echo {s1}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s1}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  {{.O}}")
 
-	result = replacePlaceholder("echo {s2}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s2}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}{{.I}}{{.O}}")
 
-	result = replacePlaceholder("echo {s3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}} {{.O}}")
 
 	// No match
-	result = replacePlaceholder("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, nil})
+	result = replacePlaceholderTest("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, nil})
 	check("echo /")
 
 	// No match, but with selections
-	result = replacePlaceholder("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, item1})
+	result = replacePlaceholderTest("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, item1})
 	checkFormat("echo /{{.O}}  foo{{.I}}bar baz{{.O}}")
 
 	// String delimiter
-	result = replacePlaceholder("echo {}/{1}/{2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}/{1}/{2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}/{{.O}}foo{{.O}}/{{.O}}bar baz{{.O}}")
 
 	// Regex delimiter
 	regex = regexp.MustCompile("[oa]+")
 	// foo'bar baz
-	result = replacePlaceholder("echo {}/{1}/{3}/{2..3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}/{1}/{3}/{2..3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}/{{.O}}f{{.O}}/{{.O}}r b{{.O}}/{{.O}}{{.I}}bar b{{.O}}")
 
 	/*
@@ -155,7 +171,6 @@ func TestReplacePlaceholder(t *testing.T) {
 		newItem("7a 7b 7c 7d 7e 7f"),
 	}
 	stripAnsi := false
-	printsep = "\n"
 	forcePlus := false
 	query := "sample query"
 
@@ -198,18 +213,23 @@ func TestReplacePlaceholder(t *testing.T) {
 	// query flag is not removed after parsing, so it gets doubled
 	// while the double q is invalid, it is useful here for testing purposes
 	templateToOutput[`{q}`] = "{{.O}}" + query + "{{.O}}"
+	templateToOutput[`{fzf:query}`] = "{{.O}}" + query + "{{.O}}"
+	templateToOutput[`{fzf:action} {fzf:prompt}`] = "backward-delete-char-eof 'prompt'"
 
 	// IV. escaping placeholder
 	templateToOutput[`\{}`] = `{}`
+	templateToOutput[`\{q}`] = `{q}`
+	templateToOutput[`\{fzf:query}`] = `{fzf:query}`
+	templateToOutput[`\{fzf:action}`] = `{fzf:action}`
 	templateToOutput[`\{++}`] = `{++}`
 	templateToOutput[`{++}`] = templateToOutput[`{+}`]
 
 	for giveTemplate, wantOutput := range templateToOutput {
-		result = replacePlaceholder(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
+		result = replacePlaceholderTest(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
 		checkFormat(wantOutput)
 	}
 	for giveTemplate, wantOutput := range templateToFile {
-		path := replacePlaceholder(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
+		path := replacePlaceholderTest(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
 
 		data, err := readFile(path)
 		if err != nil {
@@ -226,6 +246,7 @@ func TestQuoteEntry(t *testing.T) {
 	unixStyle := quotes{``, `'`, `'\''`, `"`, `\`}
 	windowsStyle := quotes{`^`, `^"`, `'`, `\^"`, `\\`}
 	var effectiveStyle quotes
+	exec := util.NewExecutor("")
 
 	if util.IsWindows() {
 		effectiveStyle = windowsStyle
@@ -260,7 +281,7 @@ func TestQuoteEntry(t *testing.T) {
 	}
 
 	for input, expected := range tests {
-		escaped := quoteEntry(input)
+		escaped := exec.QuoteEntry(input)
 		expected = templateToString(expected, effectiveStyle)
 		if escaped != expected {
 			t.Errorf("Input: %s, expected: %s, actual %s", input, expected, escaped)
@@ -299,9 +320,9 @@ func TestUnixCommands(t *testing.T) {
 
 // purpose of this test is to demonstrate some shortcomings of fzf's templating system on Windows
 func TestWindowsCommands(t *testing.T) {
-	if !util.IsWindows() {
-		t.SkipNow()
-	}
+	// XXX Deprecated
+	t.SkipNow()
+
 	tests := []testCase{
 		// reference: give{template, query, items}, want{output OR match}
 
@@ -563,7 +584,7 @@ func testCommands(t *testing.T, tests []testCase) {
 
 	// evaluate the test cases
 	for idx, test := range tests {
-		gotOutput := replacePlaceholder(
+		gotOutput := replacePlaceholderTest(
 			test.give.template, stripAnsi, delimiter, printsep, forcePlus,
 			test.give.query,
 			test.give.allItems)
@@ -605,7 +626,7 @@ func (flags placeholderFlags) encodePlaceholder() string {
 	if flags.file {
 		encoded += "f"
 	}
-	if flags.query {
+	if flags.forceUpdate { // FIXME
 		encoded += "q"
 	}
 	return encoded

src/terminal_unix.go

@@ -5,7 +5,6 @@ package fzf
 import (
 	"os"
 	"os/signal"
-	"strings"
 	"syscall"
 
 	"golang.org/x/sys/unix"
@@ -27,7 +26,3 @@ func notifyStop(p *os.Process) {
 func notifyOnCont(resizeChan chan<- os.Signal) {
 	signal.Notify(resizeChan, syscall.SIGCONT)
 }
-
-func quoteEntry(entry string) string {
-	return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
-}

src/terminal_windows.go

@@ -4,8 +4,6 @@ package fzf
 
 import (
 	"os"
-	"regexp"
-	"strings"
 )
 
 func notifyOnResize(resizeChan chan<- os.Signal) {
@@ -19,27 +17,3 @@ func notifyStop(p *os.Process) {
 func notifyOnCont(resizeChan chan<- os.Signal) {
 	// NOOP
 }
-
-func quoteEntry(entry string) string {
-	shell := os.Getenv("SHELL")
-	if len(shell) == 0 {
-		shell = "cmd"
-	}
-
-	if strings.Contains(shell, "cmd") {
-		// backslash escaping is done here for applications
-		// (see ripgrep test case in terminal_test.go#TestWindowsCommands)
-		escaped := strings.Replace(entry, `\`, `\\`, -1)
-		escaped = `"` + strings.Replace(escaped, `"`, `\"`, -1) + `"`
-		// caret is the escape character for cmd shell
-		r, _ := regexp.Compile(`[&|<>()@^%!"]`)
-		return r.ReplaceAllStringFunc(escaped, func(match string) string {
-			return "^" + match
-		})
-	} else if strings.Contains(shell, "pwsh") || strings.Contains(shell, "powershell") {
-		escaped := strings.Replace(entry, `"`, `\"`, -1)
-		return "'" + strings.Replace(escaped, "'", "''", -1) + "'"
-	} else {
-		return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
-	}
-}

src/tokenizer.go

@@ -91,7 +91,7 @@ func withPrefixLengths(tokens []string, begin int) []Token {
 
 	prefixLength := begin
 	for idx := range tokens {
-		chars := util.ToChars([]byte(tokens[idx]))
+		chars := util.ToChars(stringBytes(tokens[idx]))
 		ret[idx] = Token{&chars, int32(prefixLength)}
 		prefixLength += chars.Length()
 	}
@@ -187,7 +187,7 @@ func Transform(tokens []Token, withNth []Range) []Token {
 		if r.begin == r.end {
 			idx := r.begin
 			if idx == rangeEllipsis {
-				chars := util.ToChars([]byte(joinTokens(tokens)))
+				chars := util.ToChars(stringBytes(joinTokens(tokens)))
 				parts = append(parts, &chars)
 			} else {
 				if idx < 0 {

src/tokenizer_test.go

@@ -71,14 +71,14 @@ func TestTransform(t *testing.T) {
 	{
 		tokens := Tokenize(input, Delimiter{})
 		{
-			ranges := splitNth("1,2,3")
+			ranges, _ := splitNth("1,2,3")
 			tx := Transform(tokens, ranges)
 			if joinTokens(tx) != "abc:  def:  ghi:  " {
 				t.Errorf("%s", tx)
 			}
 		}
 		{
-			ranges := splitNth("1..2,3,2..,1")
+			ranges, _ := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
 			if string(joinTokens(tx)) != "abc:  def:  ghi:  def:  ghi:  jklabc:  " ||
 				len(tx) != 4 ||
@@ -93,7 +93,7 @@ func TestTransform(t *testing.T) {
 	{
 		tokens := Tokenize(input, delimiterRegexp(":"))
 		{
-			ranges := splitNth("1..2,3,2..,1")
+			ranges, _ := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
 			if joinTokens(tx) != "  abc:  def:  ghi:  def:  ghi:  jkl  abc:" ||
 				len(tx) != 4 ||
@@ -108,5 +108,6 @@ func TestTransform(t *testing.T) {
 }
 
 func TestTransformIndexOutOfBounds(t *testing.T) {
-	Transform([]Token{}, splitNth("1"))
+	s, _ := splitNth("1")
+	Transform([]Token{}, s)
 }

src/tui/dummy.go

@@ -8,7 +8,7 @@ func HasFullscreenRenderer() bool {
 	return false
 }
 
-var DefaultBorderShape BorderShape = BorderRounded
+var DefaultBorderShape = BorderRounded
 
 func (a Attr) Merge(b Attr) Attr {
 	return a | b
@@ -29,13 +29,14 @@ const (
 	StrikeThrough = Attr(1 << 7)
 )
 
-func (r *FullscreenRenderer) Init()                              {}
+func (r *FullscreenRenderer) Init() error                        { return nil }
 func (r *FullscreenRenderer) Resize(maxHeightFunc func(int) int) {}
 func (r *FullscreenRenderer) Pause(bool)                         {}
 func (r *FullscreenRenderer) Resume(bool, bool)                  {}
 func (r *FullscreenRenderer) PassThrough(string)                 {}
 func (r *FullscreenRenderer) Clear()                             {}
 func (r *FullscreenRenderer) NeedScrollbarRedraw() bool          { return false }
+func (r *FullscreenRenderer) ShouldEmitResizeEvent() bool        { return false }
 func (r *FullscreenRenderer) Refresh()                           {}
 func (r *FullscreenRenderer) Close()                             {}
 func (r *FullscreenRenderer) Size() TermSize                     { return TermSize{} }

src/tui/eventtype_string.go

@@ -0,0 +1,121 @@
+// Code generated by "stringer -type=EventType"; DO NOT EDIT.
+
+package tui
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Rune-0]
+	_ = x[CtrlA-1]
+	_ = x[CtrlB-2]
+	_ = x[CtrlC-3]
+	_ = x[CtrlD-4]
+	_ = x[CtrlE-5]
+	_ = x[CtrlF-6]
+	_ = x[CtrlG-7]
+	_ = x[CtrlH-8]
+	_ = x[Tab-9]
+	_ = x[CtrlJ-10]
+	_ = x[CtrlK-11]
+	_ = x[CtrlL-12]
+	_ = x[CtrlM-13]
+	_ = x[CtrlN-14]
+	_ = x[CtrlO-15]
+	_ = x[CtrlP-16]
+	_ = x[CtrlQ-17]
+	_ = x[CtrlR-18]
+	_ = x[CtrlS-19]
+	_ = x[CtrlT-20]
+	_ = x[CtrlU-21]
+	_ = x[CtrlV-22]
+	_ = x[CtrlW-23]
+	_ = x[CtrlX-24]
+	_ = x[CtrlY-25]
+	_ = x[CtrlZ-26]
+	_ = x[Esc-27]
+	_ = x[CtrlSpace-28]
+	_ = x[CtrlDelete-29]
+	_ = x[CtrlBackSlash-30]
+	_ = x[CtrlRightBracket-31]
+	_ = x[CtrlCaret-32]
+	_ = x[CtrlSlash-33]
+	_ = x[ShiftTab-34]
+	_ = x[Backspace-35]
+	_ = x[Delete-36]
+	_ = x[PageUp-37]
+	_ = x[PageDown-38]
+	_ = x[Up-39]
+	_ = x[Down-40]
+	_ = x[Left-41]
+	_ = x[Right-42]
+	_ = x[Home-43]
+	_ = x[End-44]
+	_ = x[Insert-45]
+	_ = x[ShiftUp-46]
+	_ = x[ShiftDown-47]
+	_ = x[ShiftLeft-48]
+	_ = x[ShiftRight-49]
+	_ = x[ShiftDelete-50]
+	_ = x[F1-51]
+	_ = x[F2-52]
+	_ = x[F3-53]
+	_ = x[F4-54]
+	_ = x[F5-55]
+	_ = x[F6-56]
+	_ = x[F7-57]
+	_ = x[F8-58]
+	_ = x[F9-59]
+	_ = x[F10-60]
+	_ = x[F11-61]
+	_ = x[F12-62]
+	_ = x[AltBackspace-63]
+	_ = x[AltUp-64]
+	_ = x[AltDown-65]
+	_ = x[AltLeft-66]
+	_ = x[AltRight-67]
+	_ = x[AltShiftUp-68]
+	_ = x[AltShiftDown-69]
+	_ = x[AltShiftLeft-70]
+	_ = x[AltShiftRight-71]
+	_ = x[Alt-72]
+	_ = x[CtrlAlt-73]
+	_ = x[Invalid-74]
+	_ = x[Fatal-75]
+	_ = x[Mouse-76]
+	_ = x[DoubleClick-77]
+	_ = x[LeftClick-78]
+	_ = x[RightClick-79]
+	_ = x[SLeftClick-80]
+	_ = x[SRightClick-81]
+	_ = x[ScrollUp-82]
+	_ = x[ScrollDown-83]
+	_ = x[SScrollUp-84]
+	_ = x[SScrollDown-85]
+	_ = x[PreviewScrollUp-86]
+	_ = x[PreviewScrollDown-87]
+	_ = x[Resize-88]
+	_ = x[Change-89]
+	_ = x[BackwardEOF-90]
+	_ = x[Start-91]
+	_ = x[Load-92]
+	_ = x[Focus-93]
+	_ = x[One-94]
+	_ = x[Zero-95]
+	_ = x[Result-96]
+	_ = x[Jump-97]
+	_ = x[JumpCancel-98]
+}
+
+const _EventType_name = "RuneCtrlACtrlBCtrlCCtrlDCtrlECtrlFCtrlGCtrlHTabCtrlJCtrlKCtrlLCtrlMCtrlNCtrlOCtrlPCtrlQCtrlRCtrlSCtrlTCtrlUCtrlVCtrlWCtrlXCtrlYCtrlZEscCtrlSpaceCtrlDeleteCtrlBackSlashCtrlRightBracketCtrlCaretCtrlSlashShiftTabBackspaceDeletePageUpPageDownUpDownLeftRightHomeEndInsertShiftUpShiftDownShiftLeftShiftRightShiftDeleteF1F2F3F4F5F6F7F8F9F10F11F12AltBackspaceAltUpAltDownAltLeftAltRightAltShiftUpAltShiftDownAltShiftLeftAltShiftRightAltCtrlAltInvalidFatalMouseDoubleClickLeftClickRightClickSLeftClickSRightClickScrollUpScrollDownSScrollUpSScrollDownPreviewScrollUpPreviewScrollDownResizeChangeBackwardEOFStartLoadFocusOneZeroResultJumpJumpCancel"
+
+var _EventType_index = [...]uint16{0, 4, 9, 14, 19, 24, 29, 34, 39, 44, 47, 52, 57, 62, 67, 72, 77, 82, 87, 92, 97, 102, 107, 112, 117, 122, 127, 132, 135, 144, 154, 167, 183, 192, 201, 209, 218, 224, 230, 238, 240, 244, 248, 253, 257, 260, 266, 273, 282, 291, 301, 312, 314, 316, 318, 320, 322, 324, 326, 328, 330, 333, 336, 339, 351, 356, 363, 370, 378, 388, 400, 412, 425, 428, 435, 442, 447, 452, 463, 472, 482, 492, 503, 511, 521, 530, 541, 556, 573, 579, 585, 596, 601, 605, 610, 613, 617, 623, 627, 637}
+
+func (i EventType) String() string {
+	if i < 0 || i >= EventType(len(_EventType_index)-1) {
+		return "EventType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _EventType_name[_EventType_index[i]:_EventType_index[i+1]]
+}

src/tui/light.go

@@ -2,6 +2,7 @@ package tui
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"os"
 	"regexp"
@@ -10,7 +11,7 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"github.com/mattn/go-runewidth"
+	"github.com/junegunn/fzf/src/util"
 	"github.com/rivo/uniseg"
 
 	"golang.org/x/term"
@@ -28,8 +29,8 @@ const (
 
 const consoleDevice string = "/dev/tty"
 
-var offsetRegexp *regexp.Regexp = regexp.MustCompile("(.*)\x1b\\[([0-9]+);([0-9]+)R")
-var offsetRegexpBegin *regexp.Regexp = regexp.MustCompile("^\x1b\\[[0-9]+;[0-9]+R")
+var offsetRegexp = regexp.MustCompile("(.*)\x1b\\[([0-9]+);([0-9]+)R")
+var offsetRegexpBegin = regexp.MustCompile("^\x1b\\[[0-9]+;[0-9]+R")
 
 func (r *LightRenderer) PassThrough(str string) {
 	r.queued.WriteString("\x1b7" + str + "\x1b8")
@@ -72,13 +73,14 @@ func (r *LightRenderer) csi(code string) string {
 
 func (r *LightRenderer) flush() {
 	if r.queued.Len() > 0 {
-		fmt.Fprint(os.Stderr, "\x1b[?25l"+r.queued.String()+"\x1b[?25h")
+		fmt.Fprint(os.Stderr, "\x1b[?7l\x1b[?25l"+r.queued.String()+"\x1b[?25h\x1b[?7h")
 		r.queued.Reset()
 	}
 }
 
 // Light renderer
 type LightRenderer struct {
+	closed        *util.AtomicBool
 	theme         *ColorTheme
 	mouse         bool
 	forceBlack    bool
@@ -124,19 +126,24 @@ type LightWindow struct {
 	bg       Color
 }
 
-func NewLightRenderer(theme *ColorTheme, forceBlack bool, mouse bool, tabstop int, clearOnExit bool, fullscreen bool, maxHeightFunc func(int) int) Renderer {
+func NewLightRenderer(theme *ColorTheme, forceBlack bool, mouse bool, tabstop int, clearOnExit bool, fullscreen bool, maxHeightFunc func(int) int) (Renderer, error) {
+	in, err := openTtyIn()
+	if err != nil {
+		return nil, err
+	}
 	r := LightRenderer{
+		closed:        util.NewAtomicBool(false),
 		theme:         theme,
 		forceBlack:    forceBlack,
 		mouse:         mouse,
 		clearOnExit:   clearOnExit,
-		ttyin:         openTtyIn(),
+		ttyin:         in,
 		yoffset:       0,
 		tabstop:       tabstop,
 		fullscreen:    fullscreen,
 		upOneLine:     false,
 		maxHeightFunc: maxHeightFunc}
-	return &r
+	return &r, nil
 }
 
 func repeat(r rune, times int) string {
@@ -154,11 +161,11 @@ func atoi(s string, defaultValue int) int {
 	return value
 }
 
-func (r *LightRenderer) Init() {
+func (r *LightRenderer) Init() error {
 	r.escDelay = atoi(os.Getenv("ESCDELAY"), defaultEscDelay)
 
 	if err := r.initPlatform(); err != nil {
-		errorExit(err.Error())
+		return err
 	}
 	r.updateTerminalSize()
 	initTheme(r.theme, r.defaultTheme(), r.forceBlack)
@@ -196,6 +203,7 @@ func (r *LightRenderer) Init() {
 	if !r.fullscreen && r.mouse {
 		r.yoffset, _ = r.findOffset()
 	}
+	return nil
 }
 
 func (r *LightRenderer) Resize(maxHeightFunc func(int) int) {
@@ -234,19 +242,20 @@ func getEnv(name string, defaultValue int) int {
 	return atoi(env, defaultValue)
 }
 
-func (r *LightRenderer) getBytes() []byte {
-	return r.getBytesInternal(r.buffer, false)
+func (r *LightRenderer) getBytes() ([]byte, error) {
+	bytes, err := r.getBytesInternal(r.buffer, false)
+	return bytes, err
 }
 
-func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
+func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) ([]byte, error) {
 	c, ok := r.getch(nonblock)
 	if !nonblock && !ok {
 		r.Close()
-		errorExit("Failed to read " + consoleDevice)
+		return nil, errors.New("failed to read " + consoleDevice)
 	}
 
 	retries := 0
-	if c == ESC.Int() || nonblock {
+	if c == Esc.Int() || nonblock {
 		retries = r.escDelay / escPollInterval
 	}
 	buffer = append(buffer, byte(c))
@@ -261,7 +270,7 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 				continue
 			}
 			break
-		} else if c == ESC.Int() && pc != c {
+		} else if c == Esc.Int() && pc != c {
 			retries = r.escDelay / escPollInterval
 		} else {
 			retries = 0
@@ -273,19 +282,23 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 		// so terminate fzf immediately.
 		if len(buffer) > maxInputBuffer {
 			r.Close()
-			panic(fmt.Sprintf("Input buffer overflow (%d): %v", len(buffer), buffer))
+			return nil, fmt.Errorf("input buffer overflow (%d): %v", len(buffer), buffer)
 		}
 	}
 
-	return buffer
+	return buffer, nil
 }
 
 func (r *LightRenderer) GetChar() Event {
+	var err error
 	if len(r.buffer) == 0 {
-		r.buffer = r.getBytes()
+		r.buffer, err = r.getBytes()
+		if err != nil {
+			return Event{Fatal, 0, nil}
+		}
 	}
 	if len(r.buffer) == 0 {
-		panic("Empty buffer")
+		return Event{Fatal, 0, nil}
 	}
 
 	sz := 1
@@ -301,7 +314,7 @@ func (r *LightRenderer) GetChar() Event {
 	case CtrlQ.Byte():
 		return Event{CtrlQ, 0, nil}
 	case 127:
-		return Event{BSpace, 0, nil}
+		return Event{Backspace, 0, nil}
 	case 0:
 		return Event{CtrlSpace, 0, nil}
 	case 28:
@@ -312,11 +325,13 @@ func (r *LightRenderer) GetChar() Event {
 		return Event{CtrlCaret, 0, nil}
 	case 31:
 		return Event{CtrlSlash, 0, nil}
-	case ESC.Byte():
+	case Esc.Byte():
 		ev := r.escSequence(&sz)
 		// Second chance
 		if ev.Type == Invalid {
-			r.buffer = r.getBytes()
+			if r.buffer, err = r.getBytes(); err != nil {
+				return Event{Fatal, 0, nil}
+			}
 			ev = r.escSequence(&sz)
 		}
 		return ev
@@ -328,7 +343,7 @@ func (r *LightRenderer) GetChar() Event {
 	}
 	char, rsz := utf8.DecodeRune(r.buffer)
 	if char == utf8.RuneError {
-		return Event{ESC, 0, nil}
+		return Event{Esc, 0, nil}
 	}
 	sz = rsz
 	return Event{Rune, char, nil}
@@ -336,7 +351,7 @@ func (r *LightRenderer) GetChar() Event {
 
 func (r *LightRenderer) escSequence(sz *int) Event {
 	if len(r.buffer) < 2 {
-		return Event{ESC, 0, nil}
+		return Event{Esc, 0, nil}
 	}
 
 	loc := offsetRegexpBegin.FindIndex(r.buffer)
@@ -350,15 +365,15 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 		return CtrlAltKey(rune(r.buffer[1] + 'a' - 1))
 	}
 	alt := false
-	if len(r.buffer) > 2 && r.buffer[1] == ESC.Byte() {
+	if len(r.buffer) > 2 && r.buffer[1] == Esc.Byte() {
 		r.buffer = r.buffer[1:]
 		alt = true
 	}
 	switch r.buffer[1] {
-	case ESC.Byte():
-		return Event{ESC, 0, nil}
+	case Esc.Byte():
+		return Event{Esc, 0, nil}
 	case 127:
-		return Event{AltBS, 0, nil}
+		return Event{AltBackspace, 0, nil}
 	case '[', 'O':
 		if len(r.buffer) < 3 {
 			return Event{Invalid, 0, nil}
@@ -387,7 +402,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 			}
 			return Event{Up, 0, nil}
 		case 'Z':
-			return Event{BTab, 0, nil}
+			return Event{ShiftTab, 0, nil}
 		case 'H':
 			return Event{Home, 0, nil}
 		case 'F':
@@ -435,7 +450,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 				return Event{Invalid, 0, nil} // INS
 			case '3':
 				if r.buffer[3] == '~' {
-					return Event{Del, 0, nil}
+					return Event{Delete, 0, nil}
 				}
 				if len(r.buffer) == 6 && r.buffer[5] == '~' {
 					*sz = 6
@@ -443,16 +458,16 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					case '5':
 						return Event{CtrlDelete, 0, nil}
 					case '2':
-						return Event{SDelete, 0, nil}
+						return Event{ShiftDelete, 0, nil}
 					}
 				}
 				return Event{Invalid, 0, nil}
 			case '4':
 				return Event{End, 0, nil}
 			case '5':
-				return Event{PgUp, 0, nil}
+				return Event{PageUp, 0, nil}
 			case '6':
-				return Event{PgDn, 0, nil}
+				return Event{PageDown, 0, nil}
 			case '7':
 				return Event{Home, 0, nil}
 			case '8':
@@ -490,16 +505,29 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					}
 					*sz = 6
 					switch r.buffer[4] {
-					case '1', '2', '3', '5':
+					case '1', '2', '3', '4', '5':
+						//                   Kitty      iTerm2     WezTerm
+						// SHIFT-ARROW       "\e[1;2D"
+						// ALT-SHIFT-ARROW   "\e[1;4D"  "\e[1;10D" "\e[1;4D"
+						// CTRL-SHIFT-ARROW  "\e[1;6D"             N/A
+						// CMD-SHIFT-ARROW   "\e[1;10D" N/A        N/A ("\e[1;2D")
 						alt := r.buffer[4] == '3'
-						altShift := r.buffer[4] == '1' && r.buffer[5] == '0'
 						char := r.buffer[5]
-						if altShift {
+						altShift := false
+						if r.buffer[4] == '1' && r.buffer[5] == '0' {
+							altShift = true
 							if len(r.buffer) < 7 {
 								return Event{Invalid, 0, nil}
 							}
 							*sz = 7
 							char = r.buffer[6]
+						} else if r.buffer[4] == '4' {
+							altShift = true
+							if len(r.buffer) < 6 {
+								return Event{Invalid, 0, nil}
+							}
+							*sz = 6
+							char = r.buffer[5]
 						}
 						switch char {
 						case 'A':
@@ -507,33 +535,33 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 								return Event{AltUp, 0, nil}
 							}
 							if altShift {
-								return Event{AltSUp, 0, nil}
+								return Event{AltShiftUp, 0, nil}
 							}
-							return Event{SUp, 0, nil}
+							return Event{ShiftUp, 0, nil}
 						case 'B':
 							if alt {
 								return Event{AltDown, 0, nil}
 							}
 							if altShift {
-								return Event{AltSDown, 0, nil}
+								return Event{AltShiftDown, 0, nil}
 							}
-							return Event{SDown, 0, nil}
+							return Event{ShiftDown, 0, nil}
 						case 'C':
 							if alt {
 								return Event{AltRight, 0, nil}
 							}
 							if altShift {
-								return Event{AltSRight, 0, nil}
+								return Event{AltShiftRight, 0, nil}
 							}
-							return Event{SRight, 0, nil}
+							return Event{ShiftRight, 0, nil}
 						case 'D':
 							if alt {
 								return Event{AltLeft, 0, nil}
 							}
 							if altShift {
-								return Event{AltSLeft, 0, nil}
+								return Event{AltShiftLeft, 0, nil}
 							}
-							return Event{SLeft, 0, nil}
+							return Event{ShiftLeft, 0, nil}
 						}
 					} // r.buffer[4]
 				} // r.buffer[3]
@@ -695,6 +723,10 @@ func (r *LightRenderer) NeedScrollbarRedraw() bool {
 	return false
 }
 
+func (r *LightRenderer) ShouldEmitResizeEvent() bool {
+	return false
+}
+
 func (r *LightRenderer) RefreshWindows(windows []Window) {
 	r.flush()
 }
@@ -722,6 +754,7 @@ func (r *LightRenderer) Close() {
 	r.flush()
 	r.closePlatform()
 	r.restoreTerminal()
+	r.closed.Set(true)
 }
 
 func (r *LightRenderer) Top() int {
@@ -804,11 +837,12 @@ func (w *LightWindow) drawBorderHorizontal(top, bottom bool) {
 	if w.preview {
 		color = ColPreviewBorder
 	}
-	hw := runewidth.RuneWidth(w.border.top)
+	hw := runeWidth(w.border.top)
 	if top {
 		w.Move(0, 0)
 		w.CPrint(color, repeat(w.border.top, w.width/hw))
 	}
+
 	if bottom {
 		w.Move(w.height-1, 0)
 		w.CPrint(color, repeat(w.border.bottom, w.width/hw))
@@ -816,21 +850,20 @@ func (w *LightWindow) drawBorderHorizontal(top, bottom bool) {
 }
 
 func (w *LightWindow) drawBorderVertical(left, right bool) {
-	width := w.width - 2
-	if !left || !right {
-		width++
-	}
+	vw := runeWidth(w.border.left)
 	color := ColBorder
 	if w.preview {
 		color = ColPreviewBorder
 	}
 	for y := 0; y < w.height; y++ {
-		w.Move(y, 0)
 		if left {
+			w.Move(y, 0)
 			w.CPrint(color, string(w.border.left))
+			w.CPrint(color, " ") // Margin
 		}
-		w.CPrint(color, repeat(' ', width))
 		if right {
+			w.Move(y, w.width-vw-1)
+			w.CPrint(color, " ") // Margin
 			w.CPrint(color, string(w.border.right))
 		}
 	}
@@ -842,17 +875,20 @@ func (w *LightWindow) drawBorderAround(onlyHorizontal bool) {
 	if w.preview {
 		color = ColPreviewBorder
 	}
-	hw := runewidth.RuneWidth(w.border.top)
-	tcw := runewidth.RuneWidth(w.border.topLeft) + runewidth.RuneWidth(w.border.topRight)
-	bcw := runewidth.RuneWidth(w.border.bottomLeft) + runewidth.RuneWidth(w.border.bottomRight)
+	hw := runeWidth(w.border.top)
+	tcw := runeWidth(w.border.topLeft) + runeWidth(w.border.topRight)
+	bcw := runeWidth(w.border.bottomLeft) + runeWidth(w.border.bottomRight)
 	rem := (w.width - tcw) % hw
 	w.CPrint(color, string(w.border.topLeft)+repeat(w.border.top, (w.width-tcw)/hw)+repeat(' ', rem)+string(w.border.topRight))
 	if !onlyHorizontal {
-		vw := runewidth.RuneWidth(w.border.left)
+		vw := runeWidth(w.border.left)
 		for y := 1; y < w.height-1; y++ {
 			w.Move(y, 0)
 			w.CPrint(color, string(w.border.left))
-			w.CPrint(color, repeat(' ', w.width-vw*2))
+			w.CPrint(color, " ") // Margin
+
+			w.Move(y, w.width-vw-1)
+			w.CPrint(color, " ") // Margin
 			w.CPrint(color, string(w.border.right))
 		}
 	}
@@ -1020,7 +1056,7 @@ func wrapLine(input string, prefixLength int, max int, tabstop int) []wrappedLin
 		} else if rs[0] == '\r' {
 			w++
 		} else {
-			w = runewidth.StringWidth(str)
+			w = uniseg.StringWidth(str)
 		}
 		width += w
 

src/tui/light_unix.go

@@ -3,7 +3,7 @@
 package tui
 
 import (
-	"fmt"
+	"errors"
 	"os"
 	"os/exec"
 	"strings"
@@ -48,19 +48,18 @@ func (r *LightRenderer) closePlatform() {
 	// NOOP
 }
 
-func openTtyIn() *os.File {
+func openTtyIn() (*os.File, error) {
 	in, err := os.OpenFile(consoleDevice, syscall.O_RDONLY, 0)
 	if err != nil {
 		tty := ttyname()
 		if len(tty) > 0 {
 			if in, err := os.OpenFile(tty, syscall.O_RDONLY, 0); err == nil {
-				return in
+				return in, nil
 			}
 		}
-		fmt.Fprintln(os.Stderr, "Failed to open "+consoleDevice)
-		os.Exit(2)
+		return nil, errors.New("failed to open " + consoleDevice)
 	}
-	return in
+	return in, nil
 }
 
 func (r *LightRenderer) setupTerminal() {
@@ -86,9 +85,14 @@ func (r *LightRenderer) updateTerminalSize() {
 func (r *LightRenderer) findOffset() (row int, col int) {
 	r.csi("6n")
 	r.flush()
+	var err error
 	bytes := []byte{}
 	for tries := 0; tries < offsetPollTries; tries++ {
-		bytes = r.getBytesInternal(bytes, tries > 0)
+		bytes, err = r.getBytesInternal(bytes, tries > 0)
+		if err != nil {
+			return -1, -1
+		}
+
 		offsets := offsetRegexp.FindSubmatch(bytes)
 		if len(offsets) > 3 {
 			// Add anything we skipped over to the input buffer

src/tui/light_windows.go

@@ -72,7 +72,7 @@ func (r *LightRenderer) initPlatform() error {
 	go func() {
 		fd := int(r.inHandle)
 		b := make([]byte, 1)
-		for {
+		for !r.closed.Get() {
 			// HACK: if run from PSReadline, something resets ConsoleMode to remove ENABLE_VIRTUAL_TERMINAL_INPUT.
 			_ = windows.SetConsoleMode(windows.Handle(r.inHandle), consoleFlagsInput)
 
@@ -91,9 +91,9 @@ func (r *LightRenderer) closePlatform() {
 	windows.SetConsoleMode(windows.Handle(r.inHandle), r.origStateInput)
 }
 
-func openTtyIn() *os.File {
+func openTtyIn() (*os.File, error) {
 	// not used
-	return nil
+	return nil, nil
 }
 
 func (r *LightRenderer) setupTerminal() error {

src/tui/tcell.go

@@ -7,10 +7,8 @@ import (
 	"time"
 
 	"github.com/gdamore/tcell/v2"
-	"github.com/gdamore/tcell/v2/encoding"
 	"github.com/junegunn/fzf/src/util"
 
-	"github.com/mattn/go-runewidth"
 	"github.com/rivo/uniseg"
 )
 
@@ -144,15 +142,16 @@ func (a Attr) Merge(b Attr) Attr {
 var (
 	_screen          tcell.Screen
 	_prevMouseButton tcell.ButtonMask
+	_initialResize   bool = true
 )
 
-func (r *FullscreenRenderer) initScreen() {
+func (r *FullscreenRenderer) initScreen() error {
 	s, e := tcell.NewScreen()
 	if e != nil {
-		errorExit(e.Error())
+		return e
 	}
 	if e = s.Init(); e != nil {
-		errorExit(e.Error())
+		return e
 	}
 	if r.mouse {
 		s.EnableMouse()
@@ -160,16 +159,21 @@ func (r *FullscreenRenderer) initScreen() {
 		s.DisableMouse()
 	}
 	_screen = s
+
+	return nil
 }
 
-func (r *FullscreenRenderer) Init() {
+func (r *FullscreenRenderer) Init() error {
 	if os.Getenv("TERM") == "cygwin" {
 		os.Setenv("TERM", "")
 	}
-	encoding.Register()
 
-	r.initScreen()
+	if err := r.initScreen(); err != nil {
+		return err
+	}
 	initTheme(r.theme, r.defaultTheme(), r.forceBlack)
+
+	return nil
 }
 
 func (r *FullscreenRenderer) Top() int {
@@ -203,6 +207,10 @@ func (r *FullscreenRenderer) NeedScrollbarRedraw() bool {
 	return true
 }
 
+func (r *FullscreenRenderer) ShouldEmitResizeEvent() bool {
+	return true
+}
+
 func (r *FullscreenRenderer) Refresh() {
 	// noop
 }
@@ -217,6 +225,12 @@ func (r *FullscreenRenderer) GetChar() Event {
 	ev := _screen.PollEvent()
 	switch ev := ev.(type) {
 	case *tcell.EventResize:
+		// Ignore the first resize event
+		// https://github.com/gdamore/tcell/blob/v2.7.0/TUTORIAL.md?plain=1#L18
+		if _initialResize {
+			_initialResize = false
+			return Event{Invalid, 0, nil}
+		}
 		return Event{Resize, 0, nil}
 
 	// process mouse events:
@@ -310,16 +324,16 @@ func (r *FullscreenRenderer) GetChar() Event {
 			switch ev.Rune() {
 			case 0:
 				if ctrl {
-					return Event{BSpace, 0, nil}
+					return Event{Backspace, 0, nil}
 				}
 			case rune(tcell.KeyCtrlH):
 				switch {
 				case ctrl:
 					return keyfn('h')
 				case alt:
-					return Event{AltBS, 0, nil}
+					return Event{AltBackspace, 0, nil}
 				case none, shift:
-					return Event{BSpace, 0, nil}
+					return Event{Backspace, 0, nil}
 				}
 			}
 		case tcell.KeyCtrlI:
@@ -372,17 +386,17 @@ func (r *FullscreenRenderer) GetChar() Event {
 		// section 3: (Alt)+Backspace2
 		case tcell.KeyBackspace2:
 			if alt {
-				return Event{AltBS, 0, nil}
+				return Event{AltBackspace, 0, nil}
 			}
-			return Event{BSpace, 0, nil}
+			return Event{Backspace, 0, nil}
 
 		// section 4: (Alt+Shift)+Key(Up|Down|Left|Right)
 		case tcell.KeyUp:
 			if altShift {
-				return Event{AltSUp, 0, nil}
+				return Event{AltShiftUp, 0, nil}
 			}
 			if shift {
-				return Event{SUp, 0, nil}
+				return Event{ShiftUp, 0, nil}
 			}
 			if alt {
 				return Event{AltUp, 0, nil}
@@ -390,10 +404,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Up, 0, nil}
 		case tcell.KeyDown:
 			if altShift {
-				return Event{AltSDown, 0, nil}
+				return Event{AltShiftDown, 0, nil}
 			}
 			if shift {
-				return Event{SDown, 0, nil}
+				return Event{ShiftDown, 0, nil}
 			}
 			if alt {
 				return Event{AltDown, 0, nil}
@@ -401,10 +415,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Down, 0, nil}
 		case tcell.KeyLeft:
 			if altShift {
-				return Event{AltSLeft, 0, nil}
+				return Event{AltShiftLeft, 0, nil}
 			}
 			if shift {
-				return Event{SLeft, 0, nil}
+				return Event{ShiftLeft, 0, nil}
 			}
 			if alt {
 				return Event{AltLeft, 0, nil}
@@ -412,10 +426,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Left, 0, nil}
 		case tcell.KeyRight:
 			if altShift {
-				return Event{AltSRight, 0, nil}
+				return Event{AltShiftRight, 0, nil}
 			}
 			if shift {
-				return Event{SRight, 0, nil}
+				return Event{ShiftRight, 0, nil}
 			}
 			if alt {
 				return Event{AltRight, 0, nil}
@@ -432,17 +446,17 @@ func (r *FullscreenRenderer) GetChar() Event {
 				return Event{CtrlDelete, 0, nil}
 			}
 			if shift {
-				return Event{SDelete, 0, nil}
+				return Event{ShiftDelete, 0, nil}
 			}
-			return Event{Del, 0, nil}
+			return Event{Delete, 0, nil}
 		case tcell.KeyEnd:
 			return Event{End, 0, nil}
 		case tcell.KeyPgUp:
-			return Event{PgUp, 0, nil}
+			return Event{PageUp, 0, nil}
 		case tcell.KeyPgDn:
-			return Event{PgDn, 0, nil}
+			return Event{PageDown, 0, nil}
 		case tcell.KeyBacktab:
-			return Event{BTab, 0, nil}
+			return Event{ShiftTab, 0, nil}
 		case tcell.KeyF1:
 			return Event{F1, 0, nil}
 		case tcell.KeyF2:
@@ -488,7 +502,7 @@ func (r *FullscreenRenderer) GetChar() Event {
 
 		// section 7: Esc
 		case tcell.KeyEsc:
-			return Event{ESC, 0, nil}
+			return Event{Esc, 0, nil}
 		}
 	}
 
@@ -534,7 +548,7 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 		height:      height,
 		normal:      normal,
 		borderStyle: borderStyle}
-	w.drawBorder(false)
+	w.Erase()
 	return w
 }
 
@@ -551,8 +565,12 @@ func fill(x, y, w, h int, n ColorPair, r rune) {
 }
 
 func (w *TcellWindow) Erase() {
+	if w.borderStyle.shape.HasLeft() {
+		fill(w.left-1, w.top, w.width, w.height-1, w.normal, ' ')
+	} else {
+		fill(w.left, w.top, w.width-1, w.height-1, w.normal, ' ')
+	}
 	w.drawBorder(false)
-	fill(w.left-1, w.top, w.width+1, w.height-1, w.normal, ' ')
 }
 
 func (w *TcellWindow) EraseMaybe() bool {
@@ -738,7 +756,7 @@ func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 		style = w.normal.style()
 	}
 
-	hw := runewidth.RuneWidth(w.borderStyle.top)
+	hw := runeWidth(w.borderStyle.top)
 	switch shape {
 	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderHorizontal, BorderTop:
 		max := right - 2*hw
@@ -773,7 +791,7 @@ func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 		}
 		switch shape {
 		case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderVertical, BorderRight:
-			vw := runewidth.RuneWidth(w.borderStyle.right)
+			vw := runeWidth(w.borderStyle.right)
 			for y := top; y < bot; y++ {
 				_screen.SetContent(right-vw, y, w.borderStyle.right, nil, style)
 			}
@@ -782,8 +800,8 @@ func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 	switch shape {
 	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble:
 		_screen.SetContent(left, top, w.borderStyle.topLeft, nil, style)
-		_screen.SetContent(right-runewidth.RuneWidth(w.borderStyle.topRight), top, w.borderStyle.topRight, nil, style)
+		_screen.SetContent(right-runeWidth(w.borderStyle.topRight), top, w.borderStyle.topRight, nil, style)
 		_screen.SetContent(left, bot-1, w.borderStyle.bottomLeft, nil, style)
-		_screen.SetContent(right-runewidth.RuneWidth(w.borderStyle.bottomRight), bot-1, w.borderStyle.bottomRight, nil, style)
+		_screen.SetContent(right-runeWidth(w.borderStyle.bottomRight), bot-1, w.borderStyle.bottomRight, nil, style)
 	}
 }

src/tui/tcell_test.go

@@ -102,22 +102,22 @@ func TestGetCharEventKey(t *testing.T) {
 		// KeyBackspace2 is alias for KeyDEL = 0x7F (ASCII) (allegedly unused by Windows)
 		// KeyDelete = 0x2E (VK_DELETE constant in Windows)
 		// KeyBackspace is alias for KeyBS = 0x08 (ASCII) (implicit alias with KeyCtrlH)
-		{giveKey{tcell.KeyBackspace2, 0, tcell.ModNone}, wantKey{BSpace, 0, nil}}, // fabricated
-		{giveKey{tcell.KeyBackspace2, 0, tcell.ModAlt}, wantKey{AltBS, 0, nil}},   // fabricated
-		{giveKey{tcell.KeyDEL, 0, tcell.ModNone}, wantKey{BSpace, 0, nil}},        // fabricated, unhandled
-		{giveKey{tcell.KeyDelete, 0, tcell.ModNone}, wantKey{Del, 0, nil}},
-		{giveKey{tcell.KeyDelete, 0, tcell.ModAlt}, wantKey{Del, 0, nil}},
+		{giveKey{tcell.KeyBackspace2, 0, tcell.ModNone}, wantKey{Backspace, 0, nil}},   // fabricated
+		{giveKey{tcell.KeyBackspace2, 0, tcell.ModAlt}, wantKey{AltBackspace, 0, nil}}, // fabricated
+		{giveKey{tcell.KeyDEL, 0, tcell.ModNone}, wantKey{Backspace, 0, nil}},          // fabricated, unhandled
+		{giveKey{tcell.KeyDelete, 0, tcell.ModNone}, wantKey{Delete, 0, nil}},
+		{giveKey{tcell.KeyDelete, 0, tcell.ModAlt}, wantKey{Delete, 0, nil}},
 		{giveKey{tcell.KeyBackspace, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},                                                  // fabricated, unhandled
 		{giveKey{tcell.KeyBS, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},                                                         // fabricated, unhandled
 		{giveKey{tcell.KeyCtrlH, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},                                                      // fabricated, unhandled
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModNone}, wantKey{BSpace, 0, nil}},                                    // actual "Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModAlt}, wantKey{AltBS, 0, nil}},                                      // actual "Alt+Backspace" keystroke
-		{giveKey{tcell.KeyDEL, rune(tcell.KeyDEL), tcell.ModCtrl}, wantKey{BSpace, 0, nil}},                                        // actual "Ctrl+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift}, wantKey{BSpace, 0, nil}},                                   // actual "Shift+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt}, wantKey{BSpace, 0, nil}},                                        // actual "Ctrl+Alt+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModShift}, wantKey{BSpace, 0, nil}},                                      // actual "Ctrl+Shift+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift | tcell.ModAlt}, wantKey{AltBS, 0, nil}},                     // actual "Shift+Alt+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt | tcell.ModShift}, wantKey{BSpace, 0, nil}},                       // actual "Ctrl+Shift+Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModNone}, wantKey{Backspace, 0, nil}},                                 // actual "Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModAlt}, wantKey{AltBackspace, 0, nil}},                               // actual "Alt+Backspace" keystroke
+		{giveKey{tcell.KeyDEL, rune(tcell.KeyDEL), tcell.ModCtrl}, wantKey{Backspace, 0, nil}},                                     // actual "Ctrl+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift}, wantKey{Backspace, 0, nil}},                                // actual "Shift+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt}, wantKey{Backspace, 0, nil}},                                     // actual "Ctrl+Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModShift}, wantKey{Backspace, 0, nil}},                                   // actual "Ctrl+Shift+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift | tcell.ModAlt}, wantKey{AltBackspace, 0, nil}},              // actual "Shift+Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt | tcell.ModShift}, wantKey{Backspace, 0, nil}},                    // actual "Ctrl+Shift+Alt+Backspace" keystroke
 		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModCtrl}, wantKey{CtrlH, 0, nil}},                                     // actual "Ctrl+H" keystroke
 		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModCtrl | tcell.ModAlt}, wantKey{CtrlAlt, 'h', nil}},                  // fabricated "Ctrl+Alt+H" keystroke
 		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModCtrl | tcell.ModShift}, wantKey{CtrlH, 0, nil}},                    // actual "Ctrl+Shift+H" keystroke
@@ -126,8 +126,8 @@ func TestGetCharEventKey(t *testing.T) {
 		// section 4: (Alt+Shift)+Key(Up|Down|Left|Right)
 		{giveKey{tcell.KeyUp, 0, tcell.ModNone}, wantKey{Up, 0, nil}},
 		{giveKey{tcell.KeyDown, 0, tcell.ModAlt}, wantKey{AltDown, 0, nil}},
-		{giveKey{tcell.KeyLeft, 0, tcell.ModShift}, wantKey{SLeft, 0, nil}},
-		{giveKey{tcell.KeyRight, 0, tcell.ModShift | tcell.ModAlt}, wantKey{AltSRight, 0, nil}},
+		{giveKey{tcell.KeyLeft, 0, tcell.ModShift}, wantKey{ShiftLeft, 0, nil}},
+		{giveKey{tcell.KeyRight, 0, tcell.ModShift | tcell.ModAlt}, wantKey{AltShiftRight, 0, nil}},
 		{giveKey{tcell.KeyUpLeft, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},    // fabricated, unhandled
 		{giveKey{tcell.KeyUpRight, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},   // fabricated, unhandled
 		{giveKey{tcell.KeyDownLeft, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},  // fabricated, unhandled
@@ -161,11 +161,11 @@ func TestGetCharEventKey(t *testing.T) {
 
 		// section 7: Esc
 		// KeyEsc and KeyEscape are aliases for KeyESC
-		{giveKey{tcell.KeyEsc, rune(tcell.KeyEsc), tcell.ModNone}, wantKey{ESC, 0, nil}},               // fabricated
-		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModNone}, wantKey{ESC, 0, nil}},               // unhandled
-		{giveKey{tcell.KeyEscape, rune(tcell.KeyEscape), tcell.ModNone}, wantKey{ESC, 0, nil}},         // fabricated, unhandled
-		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModCtrl}, wantKey{ESC, 0, nil}},               // actual Ctrl+[ keystroke
-		{giveKey{tcell.KeyCtrlLeftSq, rune(tcell.KeyCtrlLeftSq), tcell.ModCtrl}, wantKey{ESC, 0, nil}}, // fabricated, unhandled
+		{giveKey{tcell.KeyEsc, rune(tcell.KeyEsc), tcell.ModNone}, wantKey{Esc, 0, nil}},               // fabricated
+		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModNone}, wantKey{Esc, 0, nil}},               // unhandled
+		{giveKey{tcell.KeyEscape, rune(tcell.KeyEscape), tcell.ModNone}, wantKey{Esc, 0, nil}},         // fabricated, unhandled
+		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModCtrl}, wantKey{Esc, 0, nil}},               // actual Ctrl+[ keystroke
+		{giveKey{tcell.KeyCtrlLeftSq, rune(tcell.KeyCtrlLeftSq), tcell.ModCtrl}, wantKey{Esc, 0, nil}}, // fabricated, unhandled
 
 		// section 8: Invalid
 		{giveKey{tcell.KeyRune, 'a', tcell.ModMeta}, wantKey{Rune, 'a', nil}}, // fabricated
@@ -182,6 +182,7 @@ func TestGetCharEventKey(t *testing.T) {
 	r.Init()
 
 	// run and evaluate the tests
+	initialResizeAsInvalid := true
 	for _, test := range tests {
 		// generate key event
 		giveEvent := tcell.NewEventKey(test.giveKey.Type, test.giveKey.Char, test.giveKey.Mods)
@@ -191,8 +192,9 @@ func TestGetCharEventKey(t *testing.T) {
 		// process the event in fzf and evaluate the test
 		gotEvent := r.GetChar()
 		// skip Resize events, those are sometimes put in the buffer outside of this test
-		for gotEvent.Type == Resize {
-			t.Logf("Resize swallowed")
+		if initialResizeAsInvalid && gotEvent.Type == Invalid {
+			t.Logf("Resize as Invalid swallowed")
+			initialResizeAsInvalid = false
 			gotEvent = r.GetChar()
 		}
 		t.Logf("wantEvent = %T{Type: %v, Char: %q (%[3]v)}\n", test.wantKey, test.wantKey.Type, test.wantKey.Char)
@@ -257,7 +259,7 @@ Quick reference
 37					LeftClick
 38					RightClick
 39					BTab
-40					BSpace
+40					Backspace
 41					Del
 42					PgUp
 43					PgDn
@@ -270,7 +272,7 @@ Quick reference
 50					Insert
 51					SUp
 52					SDown
-53					SLeft
+53					ShiftLeft
 54					SRight
 55					F1
 56					F2
@@ -286,15 +288,15 @@ Quick reference
 66					F12
 67					Change
 68					BackwardEOF
-69					AltBS
+69					AltBackspace
 70					AltUp
 71					AltDown
 72					AltLeft
 73					AltRight
 74					AltSUp
 75					AltSDown
-76					AltSLeft
-77					AltSRight
+76					AltShiftLeft
+77					AltShiftRight
 78					Alt
 79					CtrlAlt
 ..

src/tui/tui.go

@@ -1,13 +1,16 @@
 package tui
 
 import (
-	"fmt"
-	"os"
 	"strconv"
 	"time"
+
+	"github.com/junegunn/fzf/src/util"
+	"github.com/rivo/uniseg"
 )
 
 // Types of user action
+//
+//go:generate stringer -type=EventType
 type EventType int
 
 const (
@@ -39,7 +42,7 @@ const (
 	CtrlX
 	CtrlY
 	CtrlZ
-	ESC
+	Esc
 	CtrlSpace
 	CtrlDelete
 
@@ -49,27 +52,12 @@ const (
 	CtrlCaret
 	CtrlSlash
 
-	Invalid
-	Resize
-	Mouse
-	DoubleClick
-	LeftClick
-	RightClick
-	SLeftClick
-	SRightClick
-	ScrollUp
-	ScrollDown
-	SScrollUp
-	SScrollDown
-	PreviewScrollUp
-	PreviewScrollDown
+	ShiftTab
+	Backspace
 
-	BTab
-	BSpace
-
-	Del
-	PgUp
-	PgDn
+	Delete
+	PageUp
+	PageDown
 
 	Up
 	Down
@@ -79,11 +67,11 @@ const (
 	End
 	Insert
 
-	SUp
-	SDown
-	SLeft
-	SRight
-	SDelete
+	ShiftUp
+	ShiftDown
+	ShiftLeft
+	ShiftRight
+	ShiftDelete
 
 	F1
 	F2
@@ -98,6 +86,39 @@ const (
 	F11
 	F12
 
+	AltBackspace
+
+	AltUp
+	AltDown
+	AltLeft
+	AltRight
+
+	AltShiftUp
+	AltShiftDown
+	AltShiftLeft
+	AltShiftRight
+
+	Alt
+	CtrlAlt
+
+	Invalid
+	Fatal
+
+	Mouse
+	DoubleClick
+	LeftClick
+	RightClick
+	SLeftClick
+	SRightClick
+	ScrollUp
+	ScrollDown
+	SScrollUp
+	SScrollDown
+	PreviewScrollUp
+	PreviewScrollDown
+
+	// Events
+	Resize
 	Change
 	BackwardEOF
 	Start
@@ -105,21 +126,10 @@ const (
 	Focus
 	One
 	Zero
-
-	AltBS
-
-	AltUp
-	AltDown
-	AltLeft
-	AltRight
-
-	AltSUp
-	AltSDown
-	AltSLeft
-	AltSRight
-
-	Alt
-	CtrlAlt
+	Result
+	Jump
+	JumpCancel
+	ClickHeader
 )
 
 func (t EventType) AsEvent() Event {
@@ -139,6 +149,31 @@ func (e Event) Comparable() Event {
 	return Event{e.Type, e.Char, nil}
 }
 
+func (e Event) KeyName() string {
+	if e.Type >= Invalid {
+		return ""
+	}
+
+	switch e.Type {
+	case Rune:
+		return string(e.Char)
+	case Alt:
+		return "alt-" + string(e.Char)
+	case CtrlAlt:
+		return "ctrl-alt-" + string(e.Char)
+	case CtrlBackSlash:
+		return "ctrl-\\"
+	case CtrlRightBracket:
+		return "ctrl-]"
+	case CtrlCaret:
+		return "ctrl-^"
+	case CtrlSlash:
+		return "ctrl-/"
+	}
+
+	return util.ToKebabCase(e.Type.String())
+}
+
 func Key(r rune) Event {
 	return Event{Rune, r, nil}
 }
@@ -268,6 +303,9 @@ type ColorTheme struct {
 	Disabled         ColorAttr
 	Fg               ColorAttr
 	Bg               ColorAttr
+	SelectedFg       ColorAttr
+	SelectedBg       ColorAttr
+	SelectedMatch    ColorAttr
 	PreviewFg        ColorAttr
 	PreviewBg        ColorAttr
 	DarkBg           ColorAttr
@@ -279,7 +317,7 @@ type ColorTheme struct {
 	Spinner          ColorAttr
 	Info             ColorAttr
 	Cursor           ColorAttr
-	Selected         ColorAttr
+	Marker           ColorAttr
 	Header           ColorAttr
 	Separator        ColorAttr
 	Scrollbar        ColorAttr
@@ -333,6 +371,14 @@ const (
 	BorderRight
 )
 
+func (s BorderShape) HasLeft() bool {
+	switch s {
+	case BorderNone, BorderRight, BorderTop, BorderBottom, BorderHorizontal: // No Left
+		return false
+	}
+	return true
+}
+
 func (s BorderShape) HasRight() bool {
 	switch s {
 	case BorderNone, BorderLeft, BorderTop, BorderBottom, BorderHorizontal: // No right
@@ -481,7 +527,7 @@ type TermSize struct {
 }
 
 type Renderer interface {
-	Init()
+	Init() error
 	Resize(maxHeightFunc func(int) int)
 	Pause(clear bool)
 	Resume(clear bool, sigcont bool)
@@ -491,6 +537,7 @@ type Renderer interface {
 	Close()
 	PassThrough(string)
 	NeedScrollbarRedraw() bool
+	ShouldEmitResizeEvent() bool
 
 	GetChar() Event
 
@@ -559,12 +606,14 @@ var (
 	ColMatch                ColorPair
 	ColCursor               ColorPair
 	ColCursorEmpty          ColorPair
+	ColMarker               ColorPair
 	ColSelected             ColorPair
+	ColSelectedMatch        ColorPair
 	ColCurrent              ColorPair
 	ColCurrentMatch         ColorPair
 	ColCurrentCursor        ColorPair
 	ColCurrentCursorEmpty   ColorPair
-	ColCurrentSelected      ColorPair
+	ColCurrentMarker        ColorPair
 	ColCurrentSelectedEmpty ColorPair
 	ColSpinner              ColorPair
 	ColInfo                 ColorPair
@@ -586,6 +635,9 @@ func EmptyTheme() *ColorTheme {
 		Input:            ColorAttr{colUndefined, AttrUndefined},
 		Fg:               ColorAttr{colUndefined, AttrUndefined},
 		Bg:               ColorAttr{colUndefined, AttrUndefined},
+		SelectedFg:       ColorAttr{colUndefined, AttrUndefined},
+		SelectedBg:       ColorAttr{colUndefined, AttrUndefined},
+		SelectedMatch:    ColorAttr{colUndefined, AttrUndefined},
 		DarkBg:           ColorAttr{colUndefined, AttrUndefined},
 		Prompt:           ColorAttr{colUndefined, AttrUndefined},
 		Match:            ColorAttr{colUndefined, AttrUndefined},
@@ -594,7 +646,7 @@ func EmptyTheme() *ColorTheme {
 		Spinner:          ColorAttr{colUndefined, AttrUndefined},
 		Info:             ColorAttr{colUndefined, AttrUndefined},
 		Cursor:           ColorAttr{colUndefined, AttrUndefined},
-		Selected:         ColorAttr{colUndefined, AttrUndefined},
+		Marker:           ColorAttr{colUndefined, AttrUndefined},
 		Header:           ColorAttr{colUndefined, AttrUndefined},
 		Border:           ColorAttr{colUndefined, AttrUndefined},
 		BorderLabel:      ColorAttr{colUndefined, AttrUndefined},
@@ -616,6 +668,9 @@ func NoColorTheme() *ColorTheme {
 		Input:            ColorAttr{colDefault, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedBg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedMatch:    ColorAttr{colDefault, AttrUndefined},
 		DarkBg:           ColorAttr{colDefault, AttrUndefined},
 		Prompt:           ColorAttr{colDefault, AttrUndefined},
 		Match:            ColorAttr{colDefault, Underline},
@@ -624,7 +679,7 @@ func NoColorTheme() *ColorTheme {
 		Spinner:          ColorAttr{colDefault, AttrUndefined},
 		Info:             ColorAttr{colDefault, AttrUndefined},
 		Cursor:           ColorAttr{colDefault, AttrUndefined},
-		Selected:         ColorAttr{colDefault, AttrUndefined},
+		Marker:           ColorAttr{colDefault, AttrUndefined},
 		Header:           ColorAttr{colDefault, AttrUndefined},
 		Border:           ColorAttr{colDefault, AttrUndefined},
 		BorderLabel:      ColorAttr{colDefault, AttrUndefined},
@@ -640,17 +695,15 @@ func NoColorTheme() *ColorTheme {
 	}
 }
 
-func errorExit(message string) {
-	fmt.Fprintln(os.Stderr, message)
-	os.Exit(2)
-}
-
 func init() {
 	Default16 = &ColorTheme{
 		Colored:          true,
 		Input:            ColorAttr{colDefault, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedBg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedMatch:    ColorAttr{colDefault, AttrUndefined},
 		DarkBg:           ColorAttr{colBlack, AttrUndefined},
 		Prompt:           ColorAttr{colBlue, AttrUndefined},
 		Match:            ColorAttr{colGreen, AttrUndefined},
@@ -659,7 +712,7 @@ func init() {
 		Spinner:          ColorAttr{colGreen, AttrUndefined},
 		Info:             ColorAttr{colWhite, AttrUndefined},
 		Cursor:           ColorAttr{colRed, AttrUndefined},
-		Selected:         ColorAttr{colMagenta, AttrUndefined},
+		Marker:           ColorAttr{colMagenta, AttrUndefined},
 		Header:           ColorAttr{colCyan, AttrUndefined},
 		Border:           ColorAttr{colBlack, AttrUndefined},
 		BorderLabel:      ColorAttr{colWhite, AttrUndefined},
@@ -678,6 +731,9 @@ func init() {
 		Input:            ColorAttr{colDefault, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedBg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedMatch:    ColorAttr{colDefault, AttrUndefined},
 		DarkBg:           ColorAttr{236, AttrUndefined},
 		Prompt:           ColorAttr{110, AttrUndefined},
 		Match:            ColorAttr{108, AttrUndefined},
@@ -686,7 +742,7 @@ func init() {
 		Spinner:          ColorAttr{148, AttrUndefined},
 		Info:             ColorAttr{144, AttrUndefined},
 		Cursor:           ColorAttr{161, AttrUndefined},
-		Selected:         ColorAttr{168, AttrUndefined},
+		Marker:           ColorAttr{168, AttrUndefined},
 		Header:           ColorAttr{109, AttrUndefined},
 		Border:           ColorAttr{59, AttrUndefined},
 		BorderLabel:      ColorAttr{145, AttrUndefined},
@@ -705,6 +761,9 @@ func init() {
 		Input:            ColorAttr{colDefault, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedBg:       ColorAttr{colDefault, AttrUndefined},
+		SelectedMatch:    ColorAttr{colDefault, AttrUndefined},
 		DarkBg:           ColorAttr{251, AttrUndefined},
 		Prompt:           ColorAttr{25, AttrUndefined},
 		Match:            ColorAttr{66, AttrUndefined},
@@ -713,7 +772,7 @@ func init() {
 		Spinner:          ColorAttr{65, AttrUndefined},
 		Info:             ColorAttr{101, AttrUndefined},
 		Cursor:           ColorAttr{161, AttrUndefined},
-		Selected:         ColorAttr{168, AttrUndefined},
+		Marker:           ColorAttr{168, AttrUndefined},
 		Header:           ColorAttr{31, AttrUndefined},
 		Border:           ColorAttr{145, AttrUndefined},
 		BorderLabel:      ColorAttr{59, AttrUndefined},
@@ -755,12 +814,15 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 	theme.Spinner = o(baseTheme.Spinner, theme.Spinner)
 	theme.Info = o(baseTheme.Info, theme.Info)
 	theme.Cursor = o(baseTheme.Cursor, theme.Cursor)
-	theme.Selected = o(baseTheme.Selected, theme.Selected)
+	theme.Marker = o(baseTheme.Marker, theme.Marker)
 	theme.Header = o(baseTheme.Header, theme.Header)
 	theme.Border = o(baseTheme.Border, theme.Border)
 	theme.BorderLabel = o(baseTheme.BorderLabel, theme.BorderLabel)
 
 	// These colors are not defined in the base themes
+	theme.SelectedFg = o(theme.Fg, theme.SelectedFg)
+	theme.SelectedBg = o(theme.Bg, theme.SelectedBg)
+	theme.SelectedMatch = o(theme.CurrentMatch, theme.SelectedMatch)
 	theme.Disabled = o(theme.Input, theme.Disabled)
 	theme.Gutter = o(theme.DarkBg, theme.Gutter)
 	theme.PreviewFg = o(theme.Fg, theme.PreviewFg)
@@ -786,17 +848,23 @@ func initPalette(theme *ColorTheme) {
 
 	ColPrompt = pair(theme.Prompt, theme.Bg)
 	ColNormal = pair(theme.Fg, theme.Bg)
+	ColSelected = pair(theme.SelectedFg, theme.SelectedBg)
 	ColInput = pair(theme.Input, theme.Bg)
 	ColDisabled = pair(theme.Disabled, theme.Bg)
 	ColMatch = pair(theme.Match, theme.Bg)
+	ColSelectedMatch = pair(theme.SelectedMatch, theme.SelectedBg)
 	ColCursor = pair(theme.Cursor, theme.Gutter)
 	ColCursorEmpty = pair(blank, theme.Gutter)
-	ColSelected = pair(theme.Selected, theme.Gutter)
+	if theme.SelectedBg.Color != theme.Bg.Color {
+		ColMarker = pair(theme.Marker, theme.SelectedBg)
+	} else {
+		ColMarker = pair(theme.Marker, theme.Gutter)
+	}
 	ColCurrent = pair(theme.Current, theme.DarkBg)
 	ColCurrentMatch = pair(theme.CurrentMatch, theme.DarkBg)
 	ColCurrentCursor = pair(theme.Cursor, theme.DarkBg)
 	ColCurrentCursorEmpty = pair(blank, theme.DarkBg)
-	ColCurrentSelected = pair(theme.Selected, theme.DarkBg)
+	ColCurrentMarker = pair(theme.Marker, theme.DarkBg)
 	ColCurrentSelectedEmpty = pair(blank, theme.DarkBg)
 	ColSpinner = pair(theme.Spinner, theme.Bg)
 	ColInfo = pair(theme.Info, theme.Bg)
@@ -811,3 +879,7 @@ func initPalette(theme *ColorTheme) {
 	ColPreviewScrollbar = pair(theme.PreviewScrollbar, theme.PreviewBg)
 	ColPreviewSpinner = pair(theme.Spinner, theme.PreviewBg)
 }
+
+func runeWidth(r rune) int {
+	return uniseg.StringWidth(string(r))
+}

src/util/atexit.go

@@ -0,0 +1,28 @@
+package util
+
+import (
+	"sync"
+)
+
+var atExitFuncs []func()
+
+// AtExit registers the function fn to be called on program termination.
+// The functions will be called in reverse order they were registered.
+func AtExit(fn func()) {
+	if fn == nil {
+		panic("AtExit called with nil func")
+	}
+	once := &sync.Once{}
+	atExitFuncs = append(atExitFuncs, func() {
+		once.Do(fn)
+	})
+}
+
+// RunAtExitFuncs runs any functions registered with AtExit().
+func RunAtExitFuncs() {
+	fns := atExitFuncs
+	for i := len(fns) - 1; i >= 0; i-- {
+		fns[i]()
+	}
+	atExitFuncs = nil
+}

src/util/atexit_test.go

@@ -0,0 +1,24 @@
+package util
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestAtExit(t *testing.T) {
+	want := []int{3, 2, 1, 0}
+	var called []int
+	for i := 0; i < 4; i++ {
+		n := i
+		AtExit(func() { called = append(called, n) })
+	}
+	RunAtExitFuncs()
+	if !reflect.DeepEqual(called, want) {
+		t.Errorf("AtExit: want call order: %v got: %v", want, called)
+	}
+
+	RunAtExitFuncs()
+	if !reflect.DeepEqual(called, want) {
+		t.Error("AtExit: should only call exit funcs once")
+	}
+}

src/util/chars.go

@@ -163,7 +163,7 @@ func (chars *Chars) ToString() string {
 	if runes := chars.optionalRunes(); runes != nil {
 		return string(runes)
 	}
-	return string(chars.slice)
+	return unsafe.String(unsafe.SliceData(chars.slice), len(chars.slice))
 }
 
 func (chars *Chars) ToRunes() []rune {
@@ -178,12 +178,12 @@ func (chars *Chars) ToRunes() []rune {
 	return runes
 }
 
-func (chars *Chars) CopyRunes(dest []rune) {
+func (chars *Chars) CopyRunes(dest []rune, from int) {
 	if runes := chars.optionalRunes(); runes != nil {
-		copy(dest, runes)
+		copy(dest, runes[from:])
 		return
 	}
-	for idx, b := range chars.slice[:len(dest)] {
+	for idx, b := range chars.slice[from:][:len(dest)] {
 		dest[idx] = rune(b)
 	}
 }

src/util/util.go

@@ -7,13 +7,12 @@ import (
 	"time"
 
 	"github.com/mattn/go-isatty"
-	"github.com/mattn/go-runewidth"
 	"github.com/rivo/uniseg"
 )
 
 // StringWidth returns string width where each CR/LF character takes 1 column
 func StringWidth(s string) int {
-	return runewidth.StringWidth(s) + strings.Count(s, "\n") + strings.Count(s, "\r")
+	return uniseg.StringWidth(s) + strings.Count(s, "\n") + strings.Count(s, "\r")
 }
 
 // RunesWidth returns runes width
@@ -165,7 +164,7 @@ func RepeatToFill(str string, length int, limit int) string {
 	output := strings.Repeat(str, times)
 	if rest > 0 {
 		for _, r := range str {
-			rest -= runewidth.RuneWidth(r)
+			rest -= uniseg.StringWidth(string(r))
 			if rest < 0 {
 				break
 			}
@@ -177,3 +176,15 @@ func RepeatToFill(str string, length int, limit int) string {
 	}
 	return output
 }
+
+// ToKebabCase converts the given CamelCase string to kebab-case
+func ToKebabCase(s string) string {
+	name := ""
+	for i, r := range s {
+		if i > 0 && r >= 'A' && r <= 'Z' {
+			name += "-"
+		}
+		name += string(r)
+	}
+	return strings.ToLower(name)
+}

src/util/util_test.go

@@ -164,6 +164,18 @@ func TestRunesWidth(t *testing.T) {
 			t.Errorf("Expected overflow index: %d, actual: %d", args[2], overflowIdx)
 		}
 	}
+	for _, input := range []struct {
+		s string
+		w int
+	}{
+		{"▶", 1},
+		{"▶️", 2},
+	} {
+		width, _ := RunesWidth([]rune(input.s), 0, 0, 100)
+		if width != input.w {
+			t.Errorf("Expected width of %s: %d, actual: %d", input.s, input.w, width)
+		}
+	}
 }
 
 func TestTruncate(t *testing.T) {

src/util/util_unix.go

@@ -3,31 +3,71 @@
 package util
 
 import (
+	"fmt"
 	"os"
 	"os/exec"
+	"strings"
 	"syscall"
 
 	"golang.org/x/sys/unix"
 )
 
-// ExecCommand executes the given command with $SHELL
-func ExecCommand(command string, setpgid bool) *exec.Cmd {
-	shell := os.Getenv("SHELL")
-	if len(shell) == 0 {
-		shell = "sh"
-	}
-	return ExecCommandWith(shell, command, setpgid)
+type Executor struct {
+	shell   string
+	args    []string
+	escaper *strings.Replacer
 }
 
-// ExecCommandWith executes the given command with the specified shell
-func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd {
-	cmd := exec.Command(shell, "-c", command)
+func NewExecutor(withShell string) *Executor {
+	shell := os.Getenv("SHELL")
+	args := strings.Fields(withShell)
+	if len(args) > 0 {
+		shell = args[0]
+		args = args[1:]
+	} else {
+		if len(shell) == 0 {
+			shell = "sh"
+		}
+		args = []string{"-c"}
+	}
+
+	var escaper *strings.Replacer
+	tokens := strings.Split(shell, "/")
+	if tokens[len(tokens)-1] == "fish" {
+		// https://fishshell.com/docs/current/language.html#quotes
+		// > The only meaningful escape sequences in single quotes are \', which
+		// > escapes a single quote and \\, which escapes the backslash symbol.
+		escaper = strings.NewReplacer("\\", "\\\\", "'", "\\'")
+	} else {
+		escaper = strings.NewReplacer("'", "'\\''")
+	}
+	return &Executor{shell, args, escaper}
+}
+
+// ExecCommand executes the given command with $SHELL
+func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
+	cmd := exec.Command(x.shell, append(x.args, command)...)
 	if setpgid {
 		cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 	}
 	return cmd
 }
 
+func (x *Executor) QuoteEntry(entry string) string {
+	return "'" + x.escaper.Replace(entry) + "'"
+}
+
+func (x *Executor) Become(stdin *os.File, environ []string, command string) {
+	shellPath, err := exec.LookPath(x.shell)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "fzf (become): %s\n", err.Error())
+		os.Exit(127)
+	}
+	args := append([]string{shellPath}, append(x.args, command)...)
+	SetStdin(stdin)
+	syscall.Exec(shellPath, args, environ)
+}
+
 // KillCommand kills the process for the given command
 func KillCommand(cmd *exec.Cmd) error {
 	return syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL)

src/util/util_windows.go

@@ -6,62 +6,159 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"strings"
 	"sync/atomic"
 	"syscall"
 )
 
-var shellPath atomic.Value
+type shellType int
+
+const (
+	shellTypeUnknown shellType = iota
+	shellTypeCmd
+	shellTypePowerShell
+)
+
+type Executor struct {
+	shell     string
+	shellType shellType
+	args      []string
+	shellPath atomic.Value
+}
+
+func NewExecutor(withShell string) *Executor {
+	shell := os.Getenv("SHELL")
+	args := strings.Fields(withShell)
+	if len(args) > 0 {
+		shell = args[0]
+	} else if len(shell) == 0 {
+		shell = "cmd"
+	}
+
+	shellType := shellTypeUnknown
+	basename := filepath.Base(shell)
+	if len(args) > 0 {
+		args = args[1:]
+	} else if strings.HasPrefix(basename, "cmd") {
+		shellType = shellTypeCmd
+		args = []string{"/s/c"}
+	} else if strings.HasPrefix(basename, "pwsh") || strings.HasPrefix(basename, "powershell") {
+		shellType = shellTypePowerShell
+		args = []string{"-NoProfile", "-Command"}
+	} else {
+		args = []string{"-c"}
+	}
+	return &Executor{shell: shell, shellType: shellType, args: args}
+}
 
 // ExecCommand executes the given command with $SHELL
-func ExecCommand(command string, setpgid bool) *exec.Cmd {
-	var shell string
-	if cached := shellPath.Load(); cached != nil {
+// FIXME: setpgid is unused. We set it in the Unix implementation so that we
+// can kill preview process with its child processes at once.
+// NOTE: For "powershell", we should ideally set output encoding to UTF8,
+// but it is left as is now because no adverse effect has been observed.
+func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
+	shell := x.shell
+	if cached := x.shellPath.Load(); cached != nil {
 		shell = cached.(string)
 	} else {
-		shell = os.Getenv("SHELL")
-		if len(shell) == 0 {
-			shell = "cmd"
-		} else if strings.Contains(shell, "/") {
+		if strings.Contains(shell, "/") {
 			out, err := exec.Command("cygpath", "-w", shell).Output()
 			if err == nil {
 				shell = strings.Trim(string(out), "\n")
 			}
 		}
-		shellPath.Store(shell)
+		x.shellPath.Store(shell)
 	}
-	return ExecCommandWith(shell, command, setpgid)
-}
-
-// ExecCommandWith executes the given command with the specified shell
-// FIXME: setpgid is unused. We set it in the Unix implementation so that we
-// can kill preview process with its child processes at once.
-// NOTE: For "powershell", we should ideally set output encoding to UTF8,
-// but it is left as is now because no adverse effect has been observed.
-func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd {
 	var cmd *exec.Cmd
-	if strings.Contains(shell, "cmd") {
+	if x.shellType == shellTypeCmd {
 		cmd = exec.Command(shell)
 		cmd.SysProcAttr = &syscall.SysProcAttr{
 			HideWindow:    false,
-			CmdLine:       fmt.Sprintf(` /v:on/s/c "%s"`, command),
+			CmdLine:       fmt.Sprintf(`%s "%s"`, strings.Join(x.args, " "), command),
 			CreationFlags: 0,
 		}
-		return cmd
-	}
-
-	if strings.Contains(shell, "pwsh") || strings.Contains(shell, "powershell") {
-		cmd = exec.Command(shell, "-NoProfile", "-Command", command)
 	} else {
-		cmd = exec.Command(shell, "-c", command)
-	}
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		HideWindow:    false,
-		CreationFlags: 0,
+		cmd = exec.Command(shell, append(x.args, command)...)
+		cmd.SysProcAttr = &syscall.SysProcAttr{
+			HideWindow:    false,
+			CreationFlags: 0,
+		}
 	}
 	return cmd
 }
 
+func (x *Executor) Become(stdin *os.File, environ []string, command string) {
+	cmd := x.ExecCommand(command, false)
+	cmd.Stdin = stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Env = environ
+	err := cmd.Start()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "fzf (become): %s\n", err.Error())
+		os.Exit(127)
+	}
+	err = cmd.Wait()
+	if err != nil {
+		if exitError, ok := err.(*exec.ExitError); ok {
+			os.Exit(exitError.ExitCode())
+		}
+	}
+	os.Exit(0)
+}
+
+func escapeArg(s string) string {
+	b := make([]byte, 0, len(s)+2)
+	b = append(b, '"')
+	slashes := 0
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		switch c {
+		default:
+			slashes = 0
+		case '\\':
+			slashes++
+		case '"':
+			for ; slashes > 0; slashes-- {
+				b = append(b, '\\')
+			}
+			b = append(b, '\\')
+		}
+		b = append(b, c)
+	}
+	for ; slashes > 0; slashes-- {
+		b = append(b, '\\')
+	}
+	b = append(b, '"')
+	return string(b)
+}
+
+func (x *Executor) QuoteEntry(entry string) string {
+	switch x.shellType {
+	case shellTypeCmd:
+		/* Manually tested with the following commands:
+		   fzf --preview "echo {}"
+		   fzf --preview "type {}"
+		   echo .git\refs\| fzf --preview "dir {}"
+		   echo .git\refs\\| fzf --preview "dir {}"
+		   echo .git\refs\\\| fzf --preview "dir {}"
+		   reg query HKCU | fzf --reverse --bind "enter:reload(reg query {})"
+		   fzf --disabled --preview "echo {q} {n} {}" --query "&|<>()@^%!"
+		   fd -H --no-ignore -td -d 4 | fzf --preview "dir {}"
+		   fd -H --no-ignore -td -d 4 | fzf --preview "eza {}" --preview-window up
+		   fd -H --no-ignore -td -d 4 | fzf --preview "eza --color=always --tree --level=3 --icons=always {}"
+		   fd -H --no-ignore -td -d 4 | fzf --preview ".\eza.exe --color=always --tree --level=3 --icons=always {}" --with-shell "powershell -NoProfile -Command"
+		*/
+		return escapeArg(entry)
+	case shellTypePowerShell:
+		escaped := strings.Replace(entry, `"`, `\"`, -1)
+		return "'" + strings.Replace(escaped, "'", "''", -1) + "'"
+	default:
+		return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
+	}
+}
+
 // KillCommand kills the process for the given command
 func KillCommand(cmd *exec.Cmd) error {
 	return cmd.Process.Kill()

test/test_go.rb

@@ -18,7 +18,6 @@ UNSETS = %w[
   FZF_ALT_C_COMMAND
   FZF_ALT_C_OPTS FZF_CTRL_R_OPTS
   FZF_API_KEY
-  fish_history
 ].freeze
 DEFAULT_TIMEOUT = 10
 
@@ -67,7 +66,7 @@ class Shell
     end
 
     def fish
-      UNSETS.map { |v| v + '= ' }.join + ' FZF_DEFAULT_OPTS=--no-scrollbar fish'
+      "unset #{UNSETS.join(' ')}; FZF_DEFAULT_OPTS=--no-scrollbar fish_history= fish"
     end
   end
 end
@@ -426,6 +425,25 @@ class TestGoFZF < TestBase
     end
   end
 
+  def test_multi_action
+    tmux.send_keys "seq 10 | #{FZF} --bind 'a:change-multi,b:change-multi(3),c:change-multi(xxx),d:change-multi(0)'", :Enter
+    tmux.until { |lines| assert_equal 10, lines.item_count }
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 ') }
+    tmux.send_keys 'a'
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (0)') }
+    tmux.send_keys 'b'
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (0/3)') }
+    tmux.send_keys :BTab
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (1/3)') }
+    tmux.send_keys 'c'
+    tmux.send_keys :BTab
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (2/3)') }
+    tmux.send_keys 'd'
+    tmux.until do |lines|
+      assert lines[-2]&.start_with?('  10/10 ') && !lines[-2]&.include?('(')
+    end
+  end
+
   def test_with_nth
     [true, false].each do |multi|
       tmux.send_keys "(echo '  1st 2nd 3rd/';
@@ -539,7 +557,7 @@ class TestGoFZF < TestBase
 
   def test_expect
     test = lambda do |key, feed, expected = key|
-      tmux.send_keys "seq 1 100 | #{fzf(:expect, key)}", :Enter
+      tmux.send_keys "seq 1 100 | #{fzf(:expect, key, :prompt, "[#{key}]")}", :Enter
       tmux.until { |lines| assert_equal '  100/100', lines[-2] }
       tmux.send_keys '55'
       tmux.until { |lines| assert_equal '  1/100', lines[-2] }
@@ -741,6 +759,12 @@ class TestGoFZF < TestBase
       'xxoxxxxxxx',
       'xoxxxxxxxx'
     ], `#{FZF} -fo --tiebreak=end,length,begin < #{tempname}`.lines(chomp: true)
+
+    writelines(tempname, ['/bar/baz', '/foo/bar/baz'])
+    assert_equal [
+      '/foo/bar/baz',
+      '/bar/baz'
+    ], `#{FZF} -fbaz --tiebreak=end < #{tempname}`.lines(chomp: true)
   end
 
   def test_tiebreak_length_with_nth
@@ -958,26 +982,40 @@ 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}"]
+    opts = %[--bind "alt-a:execute(echo /{}/ >> #{output})+change-header(alt-a),alt-b:execute[echo /{}{}/ >> #{output}]+change-header(alt-b),C:execute(echo /{}{}{}/ >> #{output})+change-header(C)"]
     writelines(tempname, %w[foo'bar foo"bar foo$bar])
     tmux.send_keys "cat #{tempname} | #{fzf(opts)}", :Enter
-    tmux.until { |lines| assert_equal '  3/3', lines[-2] }
-    tmux.send_keys :Escape, :a
+    tmux.until { |lines| assert_equal 3, lines.item_count }
+
+    ready = ->(s) { tmux.until { |lines| assert_includes lines[-3], s } }
     tmux.send_keys :Escape, :a
+    ready.call('alt-a')
+    tmux.send_keys :Escape, :b
+    ready.call('alt-b')
+
     tmux.send_keys :Up
+    tmux.send_keys :Escape, :a
+    ready.call('alt-a')
     tmux.send_keys :Escape, :b
-    tmux.send_keys :Escape, :b
+    ready.call('alt-b')
+
     tmux.send_keys :Up
     tmux.send_keys :C
+    ready.call('C')
+
     tmux.send_keys 'barfoo'
     tmux.until { |lines| assert_equal '  0/3', lines[-2] }
+
     tmux.send_keys :Escape, :a
+    ready.call('alt-a')
     tmux.send_keys :Escape, :b
+    ready.call('alt-b')
+
     wait do
       assert_path_exists output
       assert_equal %w[
-        /foo'bar/ /foo'bar/
-        /foo"barfoo"bar/ /foo"barfoo"bar/
+        /foo'bar/ /foo'barfoo'bar/
+        /foo"bar/ /foo"barfoo"bar/
         /foo$barfoo$barfoo$bar/
       ], File.readlines(output, chomp: true)
     end
@@ -987,17 +1025,28 @@ class TestGoFZF < TestBase
 
   def test_execute_multi
     output = '/tmp/fzf-test-execute-multi'
-    opts = %[--multi --bind "alt-a:execute-multi(echo {}/{+} >> #{output})"]
+    opts = %[--multi --bind "alt-a:execute-multi(echo {}/{+} >> #{output})+change-header(alt-a),alt-b:change-header(alt-b)"]
     writelines(tempname, %w[foo'bar foo"bar foo$bar foobar])
     tmux.send_keys "cat #{tempname} | #{fzf(opts)}", :Enter
+    ready = ->(s) { tmux.until { |lines| assert_includes lines[-3], s } }
+
     tmux.until { |lines| assert_equal '  4/4 (0)', lines[-2] }
     tmux.send_keys :Escape, :a
+    ready.call('alt-a')
+    tmux.send_keys :Escape, :b
+    ready.call('alt-b')
+
     tmux.send_keys :BTab, :BTab, :BTab
     tmux.until { |lines| assert_equal '  4/4 (3)', lines[-2] }
     tmux.send_keys :Escape, :a
+    ready.call('alt-a')
+    tmux.send_keys :Escape, :b
+    ready.call('alt-b')
+
     tmux.send_keys :Tab, :Tab
     tmux.until { |lines| assert_equal '  4/4 (3)', lines[-2] }
     tmux.send_keys :Escape, :a
+    ready.call('alt-a')
     wait do
       assert_path_exists output
       assert_equal [
@@ -1215,7 +1264,7 @@ class TestGoFZF < TestBase
   end
 
   def test_toggle_header
-    tmux.send_keys "seq 4 | #{FZF} --header-lines 2 --header foo --bind space:toggle-header --header-first --height 10 --border", :Enter
+    tmux.send_keys "seq 4 | #{FZF} --header-lines 2 --header foo --bind space:toggle-header --header-first --height 10 --border rounded", :Enter
     before = <<~OUTPUT
       ╭───────
       │
@@ -1438,6 +1487,19 @@ class TestGoFZF < TestBase
     assert_equal '3', readonce.chomp
   end
 
+  def test_jump_events
+    tmux.send_keys "seq 1000 | #{fzf("--multi --jump-labels 12345 --bind 'ctrl-j:jump,jump:preview(echo jumped to {}),jump-cancel:preview(echo jump cancelled at {})'")}", :Enter
+    tmux.until { |lines| assert_equal '  1000/1000 (0)', lines[-2] }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| assert_includes lines[-7], '5 5' }
+    tmux.send_keys '3'
+    tmux.until { |lines| assert(lines.any? { _1.include?('jumped to 3') }) }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| assert_includes lines[-7], '5 5' }
+    tmux.send_keys 'C-c'
+    tmux.until { |lines| assert(lines.any? { _1.include?('jump cancelled at 3') }) }
+  end
+
   def test_pointer
     tmux.send_keys "seq 10 | #{fzf("--pointer '>>'")}", :Enter
     # Assert that specified pointer is displayed
@@ -1689,7 +1751,7 @@ class TestGoFZF < TestBase
   end
 
   def test_info_hidden
-    tmux.send_keys 'seq 10 | fzf --info=hidden', :Enter
+    tmux.send_keys 'seq 10 | fzf --info=hidden --no-separator', :Enter
     tmux.until { |lines| assert_equal '> 1', lines[-2] }
   end
 
@@ -1776,6 +1838,35 @@ class TestGoFZF < TestBase
     assert_equal %w[foo], readonce.lines(chomp: true)
   end
 
+  def test_accept_or_print_query_without_match
+    tmux.send_keys %(seq 1000 | #{fzf('--bind enter:accept-or-print-query')}), :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys 99_999
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.send_keys :Enter
+    assert_equal %w[99999], readonce.lines(chomp: true)
+  end
+
+  def test_accept_or_print_query_with_match
+    tmux.send_keys %(seq 1000 | #{fzf('--bind enter:accept-or-print-query')}), :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys '^99$'
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :Enter
+    assert_equal %w[99], readonce.lines(chomp: true)
+  end
+
+  def test_accept_or_print_query_with_multi_selection
+    tmux.send_keys %(seq 1000 | #{fzf('--bind enter:accept-or-print-query --multi')}), :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys :BTab, :BTab, :BTab
+    tmux.until { |lines| assert_equal 3, lines.select_count }
+    tmux.send_keys 99_999
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.send_keys :Enter
+    assert_equal %w[1 2 3], readonce.lines(chomp: true)
+  end
+
   def test_preview_update_on_select
     tmux.send_keys %(seq 10 | fzf -m --preview 'echo {+}' --bind a:toggle-all),
                    :Enter
@@ -1858,7 +1949,7 @@ class TestGoFZF < TestBase
   end
 
   def test_reload
-    tmux.send_keys %(seq 1000 | #{FZF} --bind 'change:reload(seq {q}),a:reload(seq 100),b:reload:seq 200' --header-lines 2 --multi 2), :Enter
+    tmux.send_keys %(seq 1000 | #{FZF} --bind 'change:reload(seq $FZF_QUERY),a:reload(seq 100),b:reload:seq 200' --header-lines 2 --multi 2), :Enter
     tmux.until { |lines| assert_equal 998, lines.match_count }
     tmux.send_keys 'a'
     tmux.until do |lines|
@@ -1883,6 +1974,11 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal 10, lines.item_count }
   end
 
+  def test_reload_should_terminate_standard_input_stream
+    tmux.send_keys %(ruby -e "STDOUT.sync = true; loop { puts 1; sleep 0.1 }" | fzf --bind 'start:reload(seq 100)'), :Enter
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+  end
+
   def test_clear_list_when_header_lines_changed_due_to_reload
     tmux.send_keys %(seq 10 | #{FZF} --header 0 --header-lines 3 --bind 'space:reload(seq 1)'), :Enter
     tmux.until { |lines| assert_includes lines, '  9' }
@@ -1987,6 +2083,13 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal '> RAB', lines[-1] }
   end
 
+  def test_transform
+    tmux.send_keys %{#{FZF} --bind 'focus:transform:echo "change-prompt({fzf:action})"'}, :Enter
+    tmux.until { |lines| assert_equal 'start', lines[-1] }
+    tmux.send_keys :Up
+    tmux.until { |lines| assert_equal 'up', lines[-1] }
+  end
+
   def test_clear_selection
     tmux.send_keys %(seq 100 | #{FZF} --multi --bind space:clear-selection), :Enter
     tmux.until { |lines| assert_equal 100, lines.match_count }
@@ -2118,14 +2221,15 @@ class TestGoFZF < TestBase
     file = Tempfile.new('fzf-follow')
     file.sync = true
 
-    tmux.send_keys %(seq 100 | #{FZF} --preview 'tail -f "#{file.path}"' --preview-window follow --bind 'up:preview-up,down:preview-down,space:change-preview-window:follow|nofollow' --preview-window '~3'), :Enter
+    tmux.send_keys %(seq 100 | #{FZF} --preview 'echo start; tail -f "#{file.path}"' --preview-window follow --bind 'up:preview-up,down:preview-down,space:change-preview-window:follow|nofollow' --preview-window '~4'), :Enter
     tmux.until { |lines| lines.item_count == 100 }
 
     # Write to the temporary file, and check if the preview window is showing
     # the last line of the file
+    tmux.until { |lines| assert_includes lines[1], 'start' }
     3.times { file.puts _1 } # header lines
     1000.times { file.puts _1 }
-    tmux.until { |lines| assert_includes lines[1], '/1003' }
+    tmux.until { |lines| assert_includes lines[1], '/1004' }
     tmux.until { |lines| assert_includes lines[-2], '999' }
 
     # Scroll the preview window and fzf should stop following the file content
@@ -2133,7 +2237,7 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_includes lines[-2], '998' }
     file.puts 'foo', 'bar'
     tmux.until do |lines|
-      assert_includes lines[1], '/1005'
+      assert_includes lines[1], '/1006'
       assert_includes lines[-2], '998'
     end
 
@@ -2146,7 +2250,7 @@ class TestGoFZF < TestBase
     end
     file.puts 'baz'
     tmux.until do |lines|
-      assert_includes lines[1], '/1006'
+      assert_includes lines[1], '/1007'
       assert_includes lines[-2], 'baz'
     end
 
@@ -2155,7 +2259,7 @@ class TestGoFZF < TestBase
     wait { assert_includes lines[-2], 'bar' }
     file.puts 'aaa'
     tmux.until do |lines|
-      assert_includes lines[1], '/1007'
+      assert_includes lines[1], '/1008'
       assert_includes lines[-2], 'bar'
     end
 
@@ -2164,7 +2268,7 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_includes lines[-2], 'aaa' }
     file.puts 'bbb'
     tmux.until do |lines|
-      assert_includes lines[1], '/1008'
+      assert_includes lines[1], '/1009'
       assert_includes lines[-2], 'bbb'
     end
 
@@ -2172,7 +2276,7 @@ class TestGoFZF < TestBase
     tmux.send_keys :Space
     file.puts 'ccc', 'ddd'
     tmux.until do |lines|
-      assert_includes lines[1], '/1010'
+      assert_includes lines[1], '/1011'
       assert_includes lines[-2], 'bbb'
     end
   rescue StandardError
@@ -2396,6 +2500,84 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal 10, lines.match_count }
   end
 
+  def test_reload_disabled_case1
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload(sleep 2; seq 1000)'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case2
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload-sync(sleep 2; seq 1000)'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case3
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload(sleep 2; seq 1000)+backward-delete-char'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case4
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload-sync(sleep 2; seq 1000)+backward-delete-char'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case5
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload(echo xx; sleep 2; seq 1000)'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until do |lines|
+      assert_equal 1, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1001, lines.match_count }
+  end
+
+  def test_reload_disabled_case6
+    tmux.send_keys "seq 1000 | #{FZF} --disabled --bind 'change:reload:sleep 0.5; seq {q}'", :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys '9'
+    tmux.until { |lines| assert_equal 9, lines.match_count }
+    tmux.send_keys '9'
+    tmux.until { |lines| assert_equal 99, lines.match_count }
+
+    # TODO: How do we verify if an intermediate empty list is not shown?
+  end
+
   def test_scroll_off
     tmux.send_keys "seq 1000 | #{FZF} --scroll-off=3 --bind l:last", :Enter
     tmux.until { |lines| assert_equal 1000, lines.item_count }
@@ -2511,9 +2693,17 @@ class TestGoFZF < TestBase
     end
   end
 
+  def test_change_preview_window_should_not_reset_change_preview
+    tmux.send_keys "#{FZF} --preview-window up,border-none --bind 'start:change-preview(echo hello)' --bind 'enter:change-preview-window(border-left)'", :Enter
+    tmux.until { |lines| assert_includes lines, 'hello' }
+    tmux.send_keys :Enter
+    tmux.until { |lines| assert_includes lines, '│ hello' }
+  end
+
   def test_change_preview_window_rotate
     tmux.send_keys "seq 100 | #{FZF} --preview-window left,border-none --preview 'echo hello' --bind '" \
       "a:change-preview-window(right|down|up|hidden|)'", :Enter
+    tmux.until { |lines| assert(lines.any? { _1.include?('100/100') }) }
     3.times do
       tmux.until { |lines| lines[0].start_with?('hello') }
       tmux.send_keys 'a'
@@ -2574,7 +2764,7 @@ class TestGoFZF < TestBase
   end
 
   def test_height_range_fit
-    tmux.send_keys 'seq 3 | fzf --height ~100% --info=inline --border', :Enter
+    tmux.send_keys 'seq 3 | fzf --height ~100% --info=inline --border rounded', :Enter
     expected = <<~OUTPUT
       ╭──────────
       │   3
@@ -2587,7 +2777,7 @@ class TestGoFZF < TestBase
   end
 
   def test_height_range_fit_preview_above
-    tmux.send_keys 'seq 3 | fzf --height ~100% --info=inline --border --preview "seq {}" --preview-window up,60%', :Enter
+    tmux.send_keys 'seq 3 | fzf --height ~100% --info=inline --border rounded --preview-window border-rounded --preview "seq {}" --preview-window up,60%', :Enter
     expected = <<~OUTPUT
       ╭──────────
       │ ╭────────
@@ -2643,7 +2833,7 @@ class TestGoFZF < TestBase
   end
 
   def test_height_range_overflow
-    tmux.send_keys 'seq 100 | fzf --height ~5 --info=inline --border', :Enter
+    tmux.send_keys 'seq 100 | fzf --height ~5 --info=inline --border rounded', :Enter
     expected = <<~OUTPUT
       ╭──────────────
       │   2
@@ -2669,12 +2859,26 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_includes(lines[-1], '[[2]]') }
     tmux.send_keys :X
     tmux.until { |lines| assert_includes(lines[-1], '[[]]') }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_includes(lines[-1], '[[1]]') }
+    tmux.send_keys :X
+    tmux.until { |lines| assert_includes(lines[-1], '[[]]') }
     tmux.send_keys '?'
     tmux.send_keys :BSpace
     tmux.until { |lines| assert_equal 100, lines.match_count }
     tmux.until { |lines| refute_includes(lines[-1], '[[1]]') }
   end
 
+  def test_result_event
+    tmux.send_keys '(echo 0; seq 10) | fzf --bind "result:pos(2)"', :Enter
+    tmux.until { |lines| assert_equal 11, lines.item_count }
+    tmux.until { |lines| assert_includes lines, '> 1' }
+    tmux.send_keys '9'
+    tmux.until { |lines| assert_includes lines, '> 9' }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_includes lines, '> 1' }
+  end
+
   def test_labels_center
     tmux.send_keys 'echo x | fzf --border --border-label foobar --preview : --preview-label barfoo --bind "space:change-border-label(foobarfoo)+change-preview-label(barfoobar),enter:transform-border-label(echo foo{}foo)+transform-preview-label(echo bar{}bar)"', :Enter
     tmux.until do
@@ -2694,7 +2898,7 @@ class TestGoFZF < TestBase
   end
 
   def test_labels_left
-    tmux.send_keys ': | fzf --border --border-label foobar --border-label-pos 2 --preview : --preview-label barfoo --preview-label-pos 2', :Enter
+    tmux.send_keys ': | fzf --border rounded --preview-window border-rounded --border-label foobar --border-label-pos 2 --preview : --preview-label barfoo --preview-label-pos 2', :Enter
     tmux.until do
       assert_includes(_1[0], '╭foobar─')
       assert_includes(_1[1], '╭barfoo─')
@@ -2702,7 +2906,7 @@ class TestGoFZF < TestBase
   end
 
   def test_labels_right
-    tmux.send_keys ': | fzf --border --border-label foobar --border-label-pos -2 --preview : --preview-label barfoo --preview-label-pos -2', :Enter
+    tmux.send_keys ': | fzf --border rounded --preview-window border-rounded --border-label foobar --border-label-pos -2 --preview : --preview-label barfoo --preview-label-pos -2', :Enter
     tmux.until do
       assert_includes(_1[0], '─foobar╮')
       assert_includes(_1[1], '─barfoo╮')
@@ -2710,13 +2914,34 @@ class TestGoFZF < TestBase
   end
 
   def test_labels_bottom
-    tmux.send_keys ': | fzf --border --border-label foobar --border-label-pos 2:bottom --preview : --preview-label barfoo --preview-label-pos -2:bottom', :Enter
+    tmux.send_keys ': | fzf --border rounded --preview-window border-rounded --border-label foobar --border-label-pos 2:bottom --preview : --preview-label barfoo --preview-label-pos -2:bottom', :Enter
     tmux.until do
       assert_includes(_1[-1], '╰foobar─')
       assert_includes(_1[-2], '─barfoo╯')
     end
   end
 
+  def test_labels_variables
+    tmux.send_keys ': | fzf --border --border-label foobar --preview "echo \$FZF_BORDER_LABEL // \$FZF_PREVIEW_LABEL" --preview-label barfoo --bind "space:change-border-label(barbaz)+change-preview-label(bazbar)+refresh-preview,enter:transform-border-label(echo 123)+transform-preview-label(echo 456)+refresh-preview"', :Enter
+    tmux.until do
+      assert_includes(_1[0], '─foobar─')
+      assert_includes(_1[1], '─barfoo─')
+      assert_includes(_1[2], ' foobar // barfoo ')
+    end
+    tmux.send_keys :Space
+    tmux.until do
+      assert_includes(_1[0], '─barbaz─')
+      assert_includes(_1[1], '─bazbar─')
+      assert_includes(_1[2], ' barbaz // bazbar ')
+    end
+    tmux.send_keys :Enter
+    tmux.until do
+      assert_includes(_1[0], '─123─')
+      assert_includes(_1[1], '─456─')
+      assert_includes(_1[2], ' 123 // 456 ')
+    end
+  end
+
   def test_info_separator_unicode
     tmux.send_keys 'seq 100 | fzf -q55', :Enter
     tmux.until { assert_includes(_1[-2], '  1/100 ─') }
@@ -2752,6 +2977,13 @@ class TestGoFZF < TestBase
     tmux.until { assert_match(%r{[⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏] 100/100}, _1[-1]) }
   end
 
+  def test_info_inline_right_clearance
+    tmux.send_keys "seq 100000 | #{FZF} --info inline-right", :Enter
+    tmux.until { assert_match(%r{100000/100000}, _1[-1]) }
+    tmux.send_keys 'x'
+    tmux.until { assert_match(%r{     0/100000}, _1[-1]) }
+  end
+
   def test_prev_next_selected
     tmux.send_keys 'seq 10 | fzf --multi --bind ctrl-n:next-selected,ctrl-p:prev-selected', :Enter
     tmux.until { |lines| assert_equal 10, lines.item_count }
@@ -2839,7 +3071,7 @@ class TestGoFZF < TestBase
   end
 
   def test_no_extra_newline_issue_3209
-    tmux.send_keys(%(seq 100 | #{FZF} --height 10 --preview-window up,wrap --preview 'printf "─%.0s" $(seq 1 "$((FZF_PREVIEW_COLUMNS - 5))"); printf $"\\e[7m%s\\e[0m" title; echo; echo something'), :Enter)
+    tmux.send_keys(%(seq 100 | #{FZF} --height 10 --preview-window up,wrap,border-rounded --preview 'printf "─%.0s" $(seq 1 "$((FZF_PREVIEW_COLUMNS - 5))"); printf $"\\e[7m%s\\e[0m" title; echo; echo something'), :Enter)
     expected = <<~OUTPUT
       ╭──────────
       │ ─────────
@@ -2920,7 +3152,7 @@ class TestGoFZF < TestBase
     end
     tmux.send_keys :t
     tmux.until do |lines|
-      assert_includes lines[-2], '+T'
+      assert_includes lines[-2], '+t'
     end
     tmux.send_keys :BSpace
     tmux.until do |lines|
@@ -2932,7 +3164,7 @@ class TestGoFZF < TestBase
     tmux.send_keys '4'
     tmux.until do |lines|
       assert_equal 28, lines.match_count
-      refute_includes lines[-2], '+T'
+      refute_includes lines[-2], '+t'
     end
     tmux.send_keys :BSpace
     tmux.until do |lines|
@@ -2941,11 +3173,11 @@ class TestGoFZF < TestBase
     end
     tmux.send_keys :t
     tmux.until do |lines|
-      assert_includes lines[-2], '+T'
+      assert_includes lines[-2], '+t'
     end
     tmux.send_keys :Up
     tmux.until do |lines|
-      refute_includes lines[-2], '+T'
+      refute_includes lines[-2], '+t'
     end
   end
 
@@ -3000,6 +3232,11 @@ class TestGoFZF < TestBase
   end
 
   def test_delete_with_modifiers
+    if ENV['GITHUB_ACTION']
+      # Expected: "[3]"
+      # Actual: "[]3;5~"
+      skip('CTRL-DELETE is not properly handled in GitHub Actions environment')
+    end
     tmux.send_keys "seq 100 | #{FZF} --bind 'ctrl-delete:up+up,shift-delete:down,focus:transform-prompt:echo [{}]'", :Enter
     tmux.until { |lines| assert_equal 100, lines.item_count }
     tmux.send_keys 'C-Delete'
@@ -3020,6 +3257,24 @@ class TestGoFZF < TestBase
     tmux.send_keys :x
     tmux.until { |lines| assert(lines.any? { |line| line.include?('[x-foo]') }) }
   end
+
+  def test_preview_window_hidden_on_focus
+    tmux.send_keys "seq 3 | #{FZF} --preview 'echo {}' --bind focus:hide-preview", :Enter
+    tmux.until { |lines| assert_includes lines, '> 1' }
+    tmux.send_keys :Up
+    tmux.until { |lines| assert_includes lines, '> 2' }
+  end
+
+  def test_fzf_pos
+    tmux.send_keys "seq 100 | #{FZF} --preview 'echo $FZF_POS / $FZF_MATCH_COUNT'", :Enter
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('1 / 100') }) }
+    tmux.send_keys :Up
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('2 / 100') }) }
+    tmux.send_keys '99'
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('1 / 1') }) }
+    tmux.send_keys '99'
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('0 / 0') }) }
+  end
 end
 
 module TestShell
@@ -3213,7 +3468,10 @@ module CompletionTest
     tmux.send_keys 'cat /tmp/fzf\ test/**', :Tab
     tmux.until { |lines| assert_operator lines.match_count, :>, 0 }
     tmux.send_keys 'foobar$'
-    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert lines.any_include?('> /tmp/fzf test/foobar')
+    end
     tmux.send_keys :Enter
     tmux.until(true) { |lines| assert_equal 'cat /tmp/fzf\ test/foobar', lines[-1] }
 
@@ -3248,7 +3506,11 @@ module CompletionTest
     tmux.until { |lines| assert_operator lines.match_count, :>, 0 }
     tmux.send_keys :Tab, :Tab # Tab does not work here
     tmux.send_keys 55
-    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert_includes lines, '> 55'
+      assert_includes lines, '> /tmp/fzf-test/d55'
+    end
     tmux.send_keys :Enter
     tmux.until(true) { |lines| assert_equal 'cd /tmp/fzf-test/d55/', lines[-1] }
     tmux.send_keys :xx

uninstall

@@ -94,6 +94,7 @@ done
 bind_file="${fish_dir}/functions/fish_user_key_bindings.fish"
 if [ -f "$bind_file" ]; then
   remove_line "$bind_file" "fzf_key_bindings"
+  remove_line "$bind_file" "fzf --fish | source"
 fi
 
 if [ -d "${fish_dir}/functions" ]; then