0.42.0

Related: #3322

.github/workflows/depsreview.yaml

@@ -11,4 +11,4 @@ jobs:
       - name: 'Checkout Repository'
         uses: actions/checkout@v3
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v2
+        uses: actions/dependency-review-action@v3

.github/workflows/linux.yml

@@ -20,20 +20,20 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v4
       with:
         go-version: 1.19
 
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.0.0
+        ruby-version: 3.1.0
 
     - name: Install packages
       run: sudo apt-get install --yes zsh fish tmux
 
     - name: Install Ruby gems
-      run: sudo gem install --no-document minitest:5.14.2 rubocop:1.0.0 rubocop-minitest:0.10.1 rubocop-performance:1.8.1
+      run: sudo gem install --no-document minitest:5.17.0 rubocop:1.43.0 rubocop-minitest:0.25.1 rubocop-performance:1.15.2
 
     - name: Rubocop
       run: rubocop --require rubocop-minitest --require rubocop-performance

.github/workflows/macos.yml

@@ -20,7 +20,7 @@ jobs:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v4
       with:
         go-version: 1.18
 

.github/workflows/typos.yml

@@ -0,0 +1,10 @@
+name: "Spell Check"
+on: [pull_request]
+
+jobs:
+  typos:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: crate-ci/typos@v1.14.10

.github/workflows/winget.yml

@@ -0,0 +1,15 @@
+name: Publish to Winget
+on:
+  release:
+    types: [released]
+
+jobs:
+  publish:
+    runs-on: windows-latest # Action can only run on Windows
+    steps:
+      - uses: vedantmgoyal2009/winget-releaser@v2
+        with:
+          identifier: junegunn.fzf
+          version: ${{ github.event.release.tag_name }}
+          installers-regex: '-windows_(armv7|arm64|amd64)\.zip$'
+          token: ${{ secrets.WINGET_TOKEN }}

.goreleaser.yml

@@ -73,6 +73,8 @@ builds:
       - arm
       - arm64
       - loong64
+      - ppc64le
+      - s390x
     goarm:
       - 5
       - 6

.rubocop.yml

@@ -28,3 +28,5 @@ Style/WordArray:
   MinSize: 1
 Minitest/AssertEqual:
   Enabled: false
+Naming/VariableNumber:
+  Enabled: false

.tool-versions

@@ -1 +1 @@
-golang 1.19
+golang 1.20.4

ADVANCED.md

@@ -1,7 +1,10 @@
 Advanced fzf examples
 ======================
 
-*(Last update: 2022/08/25)*
+* *Last update: 2023/05/26*
+* *Requires fzf 0.41.0 or above*
+
+---
 
 <!-- vim-markdown-toc GFM -->
 
@@ -15,7 +18,7 @@ Advanced fzf examples
     * [Toggling between data sources](#toggling-between-data-sources)
 * [Ripgrep integration](#ripgrep-integration)
     * [Using fzf as the secondary filter](#using-fzf-as-the-secondary-filter)
-  * [Using fzf as interative Ripgrep launcher](#using-fzf-as-interative-ripgrep-launcher)
+    * [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)
 * [Log tailing](#log-tailing)
@@ -236,15 +239,13 @@ file called `rfv`.
 # 1. Search for text in files using Ripgrep
 # 2. Interactively narrow down the list using fzf
 # 3. Open the file in Vim
-IFS=: read -ra selected < <(
 rg --color=always --line-number --no-heading --smart-case "${*:-}" |
   fzf --ansi \
       --color "hl:-1:underline,hl+:-1:underline:reverse" \
       --delimiter : \
       --preview 'bat --color=always {1} --highlight-line {2}' \
-        --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
+      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-)
+      --bind 'enter:become(vim {1} +{2})'
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
 And run it with an initial query string.
@@ -307,10 +308,14 @@ I know it's a lot to digest, let's try to break down the code.
       position in the window
     - `~3` makes the top three lines fixed header so that they are always
       visible regardless of the scroll offset
-- Once we selected a line, we open the file with `vim` (`vim
+- Instead of using shell script to process the final output of fzf, we use
-  "${selected[0]}"`) and move the cursor to the line (`+${selected[1]}`).
+  `become(...)` action which was added in [fzf 0.38.0][0.38.0] to turn fzf
+  into a new process that opens the file with `vim` (`vim {1}`) and move the
+  cursor to the line (`+{2}`).
 
-### Using fzf as interative Ripgrep launcher
+[0.38.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0380
+
+### Using fzf as interactive Ripgrep launcher
 
 We have learned that we can bind `reload` action to a key (e.g.
 `--bind=ctrl-r:execute(ps -ef)`). In the next example, we are going to **bind
@@ -331,25 +336,22 @@ projects, and it will free up memory as you narrow down the results.
 # 3. Open the file in Vim
 RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
-IFS=: read -ra selected < <(
+: | fzf --ansi --disabled --query "$INITIAL_QUERY" \
-  FZF_DEFAULT_COMMAND="$RG_PREFIX $(printf %q "$INITIAL_QUERY")" \
+    --bind "start:reload:$RG_PREFIX {q}" \
-  fzf --ansi \
-      --disabled --query "$INITIAL_QUERY" \
     --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
     --delimiter : \
     --preview 'bat --color=always {1} --highlight-line {2}' \
-      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-)
+    --bind 'enter:become(vim {1} +{2})'
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
 ![image](https://user-images.githubusercontent.com/700826/113684212-f9ff0a00-96ff-11eb-8737-7bb571d320cc.png)
 
-- Instead of starting fzf in `rg ... | fzf` form, we start fzf without an
+- Instead of starting fzf in the usual `rg ... | fzf` form, we start fzf with
-  explicit input, but with a custom `FZF_DEFAULT_COMMAND` variable. This way
+  an empty input (`: | fzf`), then we make it start the initial Ripgrep
-  fzf can kill the initial Ripgrep process it starts with the initial query.
+  process immediately via `start:reload` binding. This way, fzf owns the
-  Otherwise, the initial Ripgrep process will keep consuming system resources
+  initial Ripgrep process so it can kill it on the next `reload`. Otherwise,
-  even after `reload` is triggered.
+  the process will keep running in the background.
 - Filtering is no longer a responsibility of fzf; hence `--disabled`
 - `{q}` in the reload command evaluates to the query string on fzf prompt.
 - `sleep 0.1` in the reload command is for "debouncing". This small delay will
@@ -358,8 +360,6 @@ IFS=: read -ra selected < <(
 
 ### Switching to fzf-only search mode
 
-*(Requires fzf 0.27.1 or above)*
-
 In the previous example, we lost fuzzy matching capability as we completely
 delegated search functionality to Ripgrep. But we can dynamically switch to
 fzf-only search mode by *"unbinding"* `reload` action from `change` event.
@@ -375,19 +375,16 @@ fzf-only search mode by *"unbinding"* `reload` action from `change` event.
 # 3. Open the file in Vim
 RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
-IFS=: read -ra selected < <(
+: | fzf --ansi --disabled --query "$INITIAL_QUERY" \
-  FZF_DEFAULT_COMMAND="$RG_PREFIX $(printf %q "$INITIAL_QUERY")" \
+    --bind "start:reload:$RG_PREFIX {q}" \
-  fzf --ansi \
-      --color "hl:-1:underline,hl+:-1:underline:reverse" \
-      --disabled --query "$INITIAL_QUERY" \
     --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
     --bind "alt-enter:unbind(change,alt-enter)+change-prompt(2. fzf> )+enable-search+clear-query" \
+    --color "hl:-1:underline,hl+:-1:underline:reverse" \
     --prompt '1. ripgrep> ' \
     --delimiter : \
     --preview 'bat --color=always {1} --highlight-line {2}' \
-      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-)
+    --bind 'enter:become(vim {1} +{2})'
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
 * Phase 1. Filtering with Ripgrep
@@ -408,10 +405,8 @@ IFS=: read -ra selected < <(
 
 ### Switching between Ripgrep mode and fzf mode
 
-*(Requires fzf 0.30.0 or above)*
+[fzf 0.30.0][0.30.0] added `rebind` action so we can "rebind" the bindings
-
+that were previously "unbound" via `unbind`.
-fzf 0.30.0 added `rebind` action so we can "rebind" the bindings that were
-previously "unbound" via `unbind`.
 
 This is an improved version of the previous example that allows us to switch
 between Ripgrep launcher mode and fzf-only filtering mode via CTRL-R and
@@ -421,25 +416,32 @@ CTRL-F.
 #!/usr/bin/env bash
 
 # Switch between Ripgrep launcher mode (CTRL-R) and fzf filtering mode (CTRL-F)
+rm -f /tmp/rg-fzf-{r,f}
 RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
-IFS=: read -ra selected < <(
+: | fzf --ansi --disabled --query "$INITIAL_QUERY" \
-  FZF_DEFAULT_COMMAND="$RG_PREFIX $(printf %q "$INITIAL_QUERY")" \
+    --bind "start:reload($RG_PREFIX {q})+unbind(ctrl-r)" \
-  fzf --ansi \
-      --color "hl:-1:underline,hl+:-1:underline:reverse" \
-      --disabled --query "$INITIAL_QUERY" \
     --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
-      --bind "ctrl-f:unbind(change,ctrl-f)+change-prompt(2. fzf> )+enable-search+clear-query+rebind(ctrl-r)" \
+    --bind "ctrl-f:unbind(change,ctrl-f)+change-prompt(2. fzf> )+enable-search+rebind(ctrl-r)+transform-query(echo {q} > /tmp/rg-fzf-r; cat /tmp/rg-fzf-f)" \
-      --bind "ctrl-r:unbind(ctrl-r)+change-prompt(1. ripgrep> )+disable-search+reload($RG_PREFIX {q} || true)+rebind(change,ctrl-f)" \
+    --bind "ctrl-r:unbind(ctrl-r)+change-prompt(1. ripgrep> )+disable-search+reload($RG_PREFIX {q} || true)+rebind(change,ctrl-f)+transform-query(echo {q} > /tmp/rg-fzf-f; cat /tmp/rg-fzf-r)" \
-      --prompt '1. Ripgrep> ' \
+    --color "hl:-1:underline,hl+:-1:underline:reverse" \
+    --prompt '1. ripgrep> ' \
     --delimiter : \
-      --header '╱ CTRL-R (Ripgrep mode) ╱ CTRL-F (fzf mode) ╱' \
+    --header '╱ CTRL-R (ripgrep mode) ╱ CTRL-F (fzf mode) ╱' \
     --preview 'bat --color=always {1} --highlight-line {2}' \
-      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-)
+    --bind 'enter:become(vim {1} +{2})'
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
+- To restore the query string when switching between modes, we store the
+  current query in `/tmp/rg-fzf-{r,f}` files and restore the query using
+  `transform-query` action which was added in [fzf 0.36.0][0.36.0].
+- Also note that we unbind `ctrl-r` binding on `start` event which is
+  triggered once when fzf starts.
+
+[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
+
 Log tailing
 -----------
 
@@ -465,14 +467,15 @@ Kubernetes pods.
 
 ```bash
 pods() {
-  FZF_DEFAULT_COMMAND="kubectl get pods --all-namespaces" \
+  : | command='kubectl get pods --all-namespaces' fzf \
-    fzf --info=inline --layout=reverse --header-lines=1 \
+    --info=inline --layout=reverse --header-lines=1 \
     --prompt "$(kubectl config current-context | sed 's/-context$//')> " \
     --header $'╱ Enter (kubectl exec) ╱ CTRL-O (open log in editor) ╱ CTRL-R (reload) ╱\n\n' \
+    --bind 'start:reload:$command' \
+    --bind 'ctrl-r:reload:$command' \
     --bind 'ctrl-/:change-preview-window(80%,border-bottom|hidden|)' \
     --bind 'enter:execute:kubectl exec -it --namespace {1} {2} -- bash > /dev/tty' \
     --bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --all-containers --namespace {1} {2}) > /dev/tty' \
-        --bind 'ctrl-r:reload:$FZF_DEFAULT_COMMAND' \
     --preview-window up:follow \
     --preview 'kubectl logs --follow --all-containers --tail=10000 --namespace {1} {2}' "$@"
 }

CHANGELOG.md

@@ -1,6 +1,287 @@
 CHANGELOG
 =========
 
+0.42.0
+------
+- Added new info style: `--info=right`
+- Added new info style: `--info=inline-right`
+- Added new border style `thinblock` which uses symbols for legacy computing
+  [one eighth block elements](https://en.wikipedia.org/wiki/Symbols_for_Legacy_Computing)
+    - Similarly to `block`, this style is suitable when using a different
+      background color because the window is completely contained within the border.
+      ```sh
+      BAT_THEME=GitHub fzf --info=right --border=thinblock --preview-window=border-thinblock \
+          --margin=3 --scrollbar=▏▕ --preview='bat --color=always --style=numbers {}' \
+          --color=light,query:238,fg:238,bg:251,bg+:249,gutter:251,border:248,preview-bg:253
+      ```
+    - This style may not render correctly depending on the font and the
+      terminal emulator.
+
+0.41.1
+------
+- Fixed a bug where preview window is not updated when `--disabled` is set and
+  a reload is triggered by `change:reload` binding
+
+0.41.0
+------
+- Added color name `preview-border` and `preview-scrollbar`
+- Added new border style `block` which uses [block elements](https://en.wikipedia.org/wiki/Block_Elements)
+- `--scrollbar` can take two characters, one for the main window, the other
+  for the preview window
+- Putting it altogether:
+  ```sh
+  fzf-tmux -p 80% --padding 1,2 --preview 'bat --style=plain --color=always {}' \
+      --color 'bg:237,bg+:235,gutter:237,border:238,scrollbar:236' \
+      --color 'preview-bg:235,preview-border:236,preview-scrollbar:234' \
+      --preview-window 'border-block' --border block --scrollbar '▌▐'
+  ```
+- Bug fixes and improvements
+
+0.40.0
+------
+- Added `zero` event that is triggered when there's no match
+  ```sh
+  # Reload the candidate list when there's no match
+  echo $RANDOM | fzf --bind 'zero:reload(echo $RANDOM)+clear-query' --height 3
+  ```
+- New actions
+    - Added `track` action which makes fzf track the current item when the
+      search result is updated. If the user manually moves the cursor, or the
+      item is not in the updated search result, tracking is automatically
+      disabled. Tracking is useful when you want to see the surrounding items
+      by deleting the query string.
+      ```sh
+      # Narrow down the list with a query, point to a command,
+      # and hit CTRL-T to see its surrounding commands.
+      export FZF_CTRL_R_OPTS="
+        --preview 'echo {}' --preview-window up:3:hidden:wrap
+        --bind 'ctrl-/:toggle-preview'
+        --bind 'ctrl-t:track+clear-query'
+        --bind 'ctrl-y:execute-silent(echo -n {2..} | pbcopy)+abort'
+        --color header:italic
+        --header 'Press CTRL-Y to copy command into clipboard'"
+      ```
+    - Added `change-header(...)`
+    - Added `transform-header(...)`
+    - Added `toggle-track` action
+- Fixed `--track` behavior when used with `--tac`
+    - However, using `--track` with `--tac` is not recommended. The resulting
+      behavior can be very confusing.
+- Bug fixes and improvements
+
+0.39.0
+------
+- Added `one` event that is triggered when there's only one match
+  ```sh
+  # Automatically select the only match
+  seq 10 | fzf --bind one:accept
+  ```
+- Added `--track` option that makes fzf track the current selection when the
+  result list is updated. This can be useful when browsing logs using fzf with
+  sorting disabled.
+  ```sh
+  git log --oneline --graph --color=always | nl |
+      fzf --ansi --track --no-sort --layout=reverse-list
+  ```
+- If you use `--listen` option without a port number fzf will automatically
+  allocate an available port and export it as `$FZF_PORT` environment
+  variable.
+  ```sh
+  # Automatic port assignment
+  fzf --listen --bind 'start:execute-silent:echo $FZF_PORT > /tmp/fzf-port'
+
+  # Say hello
+  curl "localhost:$(cat /tmp/fzf-port)" -d 'preview:echo Hello, fzf is listening on $FZF_PORT.'
+  ```
+- A carriage return and a line feed character will be rendered as dim ␍ and
+  ␊ respectively.
+  ```sh
+  printf "foo\rbar\nbaz" | fzf --read0 --preview 'echo {}'
+  ```
+- fzf will stop rendering a non-displayable characters as a space. This will
+  likely cause less glitches in the preview window.
+  ```sh
+  fzf --preview 'head -1000 /dev/random'
+  ```
+- Bug fixes and improvements
+
+0.38.0
+------
+- New actions
+    - `become(...)` - Replace the current fzf process with the specified
+      command using `execve(2)` system call.
+      See https://github.com/junegunn/fzf#turning-into-a-different-process for
+      more information.
+      ```sh
+      # Open selected files in Vim
+      fzf --multi --bind 'enter:become(vim {+})'
+
+      # Open the file in Vim and go to the line
+      git grep --line-number . |
+          fzf --delimiter : --nth 3.. --bind 'enter:become(vim {1} +{2})'
+      ```
+        - This action is not supported on Windows
+    - `show-preview`
+    - `hide-preview`
+- Bug fixes
+    - `--preview-window 0,hidden` should not execute the preview command until
+      `toggle-preview` action is triggered
+
+0.37.0
+------
+- Added a way to customize the separator of inline info
+  ```sh
+  fzf --info 'inline: ╱ ' --prompt '╱ ' --color prompt:bright-yellow
+  ```
+- New event
+    - `focus` - Triggered when the focus changes due to a vertical cursor
+      movement or a search result update
+      ```sh
+      fzf --bind 'focus:transform-preview-label:echo [ {} ]' --preview 'cat {}'
+
+      # Any action bound to the event runs synchronously and thus can make the interface sluggish
+      # e.g. lolcat isn't one of the fastest programs, and every cursor movement in
+      #      fzf will be noticeably affected by its execution time
+      fzf --bind 'focus:transform-preview-label:echo [ {} ] | lolcat -f' --preview 'cat {}'
+
+      # Beware not to introduce an infinite loop
+      seq 10 | fzf --bind 'focus:up' --cycle
+      ```
+- New actions
+    - `change-border-label`
+    - `change-preview-label`
+    - `transform-border-label`
+    - `transform-preview-label`
+- Bug fixes and improvements
+
+0.36.0
+------
+- Added `--listen=HTTP_PORT` option to start HTTP server. It allows external
+  processes to send actions to perform via POST method.
+  ```sh
+  # Start HTTP server on port 6266
+  fzf --listen 6266
+
+  # Send actions to the server
+  curl -XPOST localhost:6266 -d 'reload(seq 100)+change-prompt(hundred> )'
+  ```
+- Added draggable scrollbar to the main search window and the preview window
+  ```sh
+  # Hide scrollbar
+  fzf --no-scrollbar
+
+  # Customize scrollbar
+  fzf --scrollbar ┆ --color scrollbar:blue
+  ```
+- New event
+    - Added `load` event that is triggered when the input stream is complete
+      and the initial processing of the list is complete.
+      ```sh
+      # 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> '
+
+      # You can use it instead of 'start' event without `--sync` if asynchronous
+      # trigger is not an issue.
+      (seq 10; sleep 1; seq 11 20) | fzf --bind 'load:last'
+      ```
+- New actions
+    - Added `pos(...)` action to move the cursor to the numeric position
+        - `first` and `last` are equivalent to `pos(1)` and `pos(-1)` respectively
+      ```sh
+      # Put the cursor on the 10th item
+      seq 100 | fzf --sync --bind 'start:pos(10)'
+
+      # Put the cursor on the 10th to last item
+      seq 100 | fzf --sync --bind 'start:pos(-10)'
+      ```
+    - Added `reload-sync(...)` action which replaces the current list only after
+      the reload process is complete. This is useful when the command takes
+      a while to produce the initial output and you don't want fzf to run against
+      an empty list while the command is running.
+      ```sh
+      # 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)'
+      ```
+    - Added `next-selected` and `prev-selected` actions to move between selected
+      items
+      ```sh
+      # `next-selected` will move the pointer to the next selected item below the current line
+      # `prev-selected` will move the pointer to the previous selected item above the current line
+      seq 10 | fzf --multi --bind ctrl-n:next-selected,ctrl-p:prev-selected
+
+      # Both actions respect --layout option
+      seq 10 | fzf --multi --bind ctrl-n:next-selected,ctrl-p:prev-selected --layout reverse
+      ```
+    - Added `change-query(...)` action that simply changes the query string to the
+      given static string. This can be useful when used with `--listen`.
+      ```sh
+      curl localhost:6266 -d "change-query:$(date)"
+      ```
+    - Added `transform-prompt(...)` action for transforming the prompt string
+      using an external command
+      ```sh
+      # Press space to change the prompt string using an external command
+      # (only the first line of the output is taken)
+      fzf --bind 'space:reload(ls),load:transform-prompt(printf "%s> " "$(date)")'
+      ```
+    - Added `transform-query(...)` action for transforming the query string using
+      an external command
+      ```sh
+      # Press space to convert the query to uppercase letters
+      fzf --bind 'space:transform-query(tr "[:lower:]" "[:upper:]" <<< {q})'
+
+      # Bind it to 'change' event for automatic conversion
+      fzf --bind 'change:transform-query(tr "[:lower:]" "[:upper:]" <<< {q})'
+
+      # Can only type numbers
+      fzf --bind 'change:transform-query(sed "s/[^0-9]//g" <<< {q})'
+      ```
+    - `put` action can optionally take an argument string
+      ```sh
+      # a will put 'alpha' on the prompt, ctrl-b will put 'bravo'
+      fzf --bind 'a:put+put(lpha),ctrl-b:put(bravo)'
+      ```
+- Added color name `preview-label` for `--preview-label` (defaults to `label`
+  for `--border-label`)
+- Better support for (Windows) terminals where each box-drawing character
+  takes 2 columns. Set `RUNEWIDTH_EASTASIAN` environment variable to `0` or `1`.
+    - On Vim, the variable will be automatically set if `&ambiwidth` is `double`
+- Behavior changes
+    - fzf will always execute the preview command if the command template
+      contains `{q}` even when it's empty. If you prefer the old behavior,
+      you'll have to check if `{q}` is empty in your command.
+      ```sh
+      # This will show // even when the query is empty
+      : | fzf --preview 'echo /{q}/'
+
+      # But if you don't want it,
+      : | fzf --preview '[ -n {q} ] || exit; echo /{q}/'
+      ```
+    - `double-click` will behave the same as `enter` unless otherwise specified,
+      so you don't have to repeat the same action twice in `--bind` in most cases.
+      ```sh
+      # No need to bind 'double-click' to the same action
+      fzf --bind 'enter:execute:less {}' # --bind 'double-click:execute:less {}'
+      ```
+    - If the color for `separator` is not specified, it will default to the
+      color for `border`. Same holds true for `scrollbar`. This is to reduce
+      the number of configuration items required to achieve a consistent color
+      scheme.
+    - If `follow` flag is specified in `--preview-window` option, fzf will
+      automatically scroll to the bottom of the streaming preview output. But
+      when the user manually scrolls the window, the following stops. With
+      this version, fzf will resume following if the user scrolls the window
+      to the bottom.
+    - Default border style on Windows is changed to `sharp` because some
+      Windows terminals are not capable of displaying `rounded` border
+      characters correctly.
+- Minor bug fixes and improvements
+
+0.35.1
+------
+- Fixed a bug where fzf with `--tiebreak=chunk` crashes on inverse match query
+- Fixed a bug where clicking above fzf would paste escape sequences
+
 0.35.0
 ------
 - Added `start` event that is triggered only once when fzf finder starts.

Dockerfile

@@ -1,4 +1,4 @@
-FROM archlinux
+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
 RUN echo '. /usr/share/bash-completion/completions/git' >> ~/.bashrc

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2022 Junegunn Choi
+Copyright (c) 2013-2023 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

@@ -20,7 +20,7 @@ VERSION_REGEX  := $(subst .,\.,$(VERSION_TRIM))
 ifdef FZF_REVISION
 REVISION       := $(FZF_REVISION)
 else
-REVISION       := $(shell git log -n 1 --pretty=format:%h -- $(SOURCES) 2> /dev/null)
+REVISION       := $(shell git log -n 1 --pretty=format:%h --abbrev=8 -- $(SOURCES) 2> /dev/null)
 endif
 ifeq ($(REVISION),)
 $(error Not on git repository; cannot determine $$FZF_REVISION)
@@ -29,6 +29,7 @@ BUILD_FLAGS    := -a -ldflags "-s -w -X main.version=$(VERSION) -X main.revision
 
 BINARY32       := fzf-$(GOOS)_386
 BINARY64       := fzf-$(GOOS)_amd64
+BINARYS390     := fzf-$(GOOS)_s390x
 BINARYARM5     := fzf-$(GOOS)_arm5
 BINARYARM6     := fzf-$(GOOS)_arm6
 BINARYARM7     := fzf-$(GOOS)_arm7
@@ -43,6 +44,8 @@ ifeq ($(UNAME_M),x86_64)
 	BINARY := $(BINARY64)
 else ifeq ($(UNAME_M),amd64)
 	BINARY := $(BINARY64)
+else ifeq ($(UNAME_M),s390x)
+	BINARY := $(BINARYS390)
 else ifeq ($(UNAME_M),i686)
 	BINARY := $(BINARY32)
 else ifeq ($(UNAME_M),i386)
@@ -85,7 +88,7 @@ bench:
 install: bin/fzf
 
 build:
-	goreleaser --rm-dist --snapshot
+	goreleaser build --rm-dist --snapshot --skip-post-hooks
 
 release:
 ifndef GITHUB_TOKEN
@@ -132,6 +135,8 @@ target/$(BINARY32): $(SOURCES)
 target/$(BINARY64): $(SOURCES)
 	GOARCH=amd64 $(GO) build $(BUILD_FLAGS) -o $@
 
+target/$(BINARYS390): $(SOURCES)
+	GOARCH=s390x $(GO) build $(BUILD_FLAGS) -o $@
 # https://github.com/golang/go/wiki/GoArm
 target/$(BINARYARM5): $(SOURCES)
 	GOARCH=arm GOARM=5 $(GO) build $(BUILD_FLAGS) -o $@

README-VIM.md

@@ -12,7 +12,10 @@ differ depending on the package manager.
 " If installed using Homebrew
 set rtp+=/usr/local/opt/fzf
 
-" If installed using git
+" If installed using Homebrew on Apple Silicon
+set rtp+=/opt/homebrew/opt/fzf
+
+" If you have cloned fzf on ~/.fzf directory
 set rtp+=~/.fzf
 ```
 
@@ -23,7 +26,7 @@ written as:
 " If installed using Homebrew
 Plug '/usr/local/opt/fzf'
 
-" If installed using git
+" If you have cloned fzf on ~/.fzf directory
 Plug '~/.fzf'
 ```
 
@@ -115,7 +118,7 @@ let g:fzf_action = {
 
 " An action can be a reference to a function that processes selected lines
 function! s:build_quickfix_list(lines)
-  call setqflist(map(copy(a:lines), '{ "filename": v:val }'))
+  call setqflist(map(copy(a:lines), '{ "filename": v:val, "lnum": 1 }'))
   copen
   cc
 endfunction
@@ -309,7 +312,7 @@ following options are allowed:
     - `yoffset` [float default 0.5 range [0 ~ 1]]
     - `xoffset` [float default 0.5 range [0 ~ 1]]
     - `relative` [boolean default v:false]
-    - `border` [string default `rounded`]: Border style
+    - `border` [string default `rounded` (`sharp` on Windows)]: Border style
         - `rounded` / `sharp` / `horizontal` / `vertical` / `top` / `bottom` / `left` / `right` / `no[ne]`
 
 `fzf#wrap`
@@ -483,4 +486,4 @@ autocmd  FileType fzf set laststatus=0 noshowmode noruler
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2023 Junegunn Choi

README.md

@@ -54,6 +54,7 @@ Table of Contents
 * [Advanced topics](#advanced-topics)
     * [Performance](#performance)
     * [Executing external programs](#executing-external-programs)
+    * [Turning into a different process](#turning-into-a-different-process)
     * [Reloading the candidate list](#reloading-the-candidate-list)
         * [1. Update the list of processes by pressing CTRL-R](#1-update-the-list-of-processes-by-pressing-ctrl-r)
         * [2. Switch between sources by pressing CTRL-D or CTRL-F](#2-switch-between-sources-by-pressing-ctrl-d-or-ctrl-f)
@@ -115,7 +116,7 @@ git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
 | Package Manager | Linux Distribution      | Command                            |
 | ---             | ---                     | ---                                |
 | APK             | Alpine Linux            | `sudo apk add fzf`                 |
-| APT             | Debian 9+/Ubuntu 19.10+ | `sudo apt-get install fzf`         |
+| APT             | Debian 9+/Ubuntu 19.10+ | `sudo apt install fzf`             |
 | Conda           |                         | `conda install -c conda-forge fzf` |
 | DNF             | Fedora                  | `sudo dnf install fzf`             |
 | Nix             | NixOS, etc.             | `nix-env -iA nixpkgs.fzf`          |
@@ -123,28 +124,31 @@ git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
 | pkg             | FreeBSD                 | `pkg install fzf`                  |
 | pkgin           | NetBSD                  | `pkgin install fzf`                |
 | pkg_add         | OpenBSD                 | `pkg_add fzf`                      |
+| Portage         | Gentoo                  | `emerge --ask app-shells/fzf`      |
 | XBPS            | Void Linux              | `sudo xbps-install -S fzf`         |
 | Zypper          | openSUSE                | `sudo zypper install fzf`          |
 
 > :warning: **Key bindings (CTRL-T / CTRL-R / ALT-C) and fuzzy auto-completion
 > may not be enabled by default.**
 >
-> Refer to the package documentation for more information. (e.g. `apt-cache show fzf`)
+> Refer to the package documentation for more information. (e.g. `apt show fzf`)
 
 [![Packaging status](https://repology.org/badge/vertical-allrepos/fzf.svg)](https://repology.org/project/fzf/versions)
 
 ### Windows
 
 Pre-built binaries for Windows can be downloaded [here][bin]. fzf is also
-available via [Chocolatey][choco] and [Scoop][scoop]:
+available via [Chocolatey][choco], [Scoop][scoop], and [Winget][winget]:
 
 | Package manager | Command              |
 | ---             | ---                  |
 | Chocolatey      | `choco install fzf`  |
 | Scoop           | `scoop install fzf`  |
+| Winget          | `winget install fzf` |
 
 [choco]: https://chocolatey.org/packages/fzf
 [scoop]: https://github.com/ScoopInstaller/Main/blob/master/bucket/fzf.json
+[winget]: https://github.com/microsoft/winget-pkgs/tree/master/manifests/j/junegunn/fzf
 
 Known issues and limitations on Windows can be found on [the wiki
 page][windows-wiki].
@@ -202,7 +206,23 @@ files excluding hidden ones. (You can override the default command with
 vim $(fzf)
 ```
 
-#### Using the finder
+> *:bulb: A more robust solution would be to use `xargs` but we've presented
+> the above as it's easier to grasp*
+> ```sh
+> fzf --print0 | xargs -0 -o vim
+> ```
+
+>
+> *:bulb: fzf also has the ability to turn itself into a different process.*
+>
+> ```sh
+> fzf --bind 'enter:become(vim {})'
+> ```
+>
+> *See [Turning into a different process](#turning-into-a-different-process)
+> for more information.*
+
+### Using the finder
 
 - `CTRL-K` / `CTRL-J` (or `CTRL-P` / `CTRL-N`) to move cursor up and down
 - `Enter` key to select the item, `CTRL-C` / `CTRL-G` / `ESC` to exit
@@ -211,7 +231,7 @@ vim $(fzf)
 - Mouse: scroll, click, double-click; shift-click and shift-scroll on
   multi-select mode
 
-#### Layout
+### Layout
 
 fzf by default starts in fullscreen mode, but you can make it start below the
 cursor with `--height` option.
@@ -234,7 +254,7 @@ default. For example,
 export FZF_DEFAULT_OPTS='--height 40% --layout=reverse --border'
 ```
 
-#### Search syntax
+### Search syntax
 
 Unless otherwise specified, fzf starts in "extended-search mode" where you can
 type in multiple search terms delimited by spaces. e.g. `^music .mp3$ sbtrkt
@@ -262,7 +282,7 @@ or `py`.
 ^core go$ | rb$ | py$
 ```
 
-#### Environment variables
+### Environment variables
 
 - `FZF_DEFAULT_COMMAND`
     - Default command to use when input is tty
@@ -278,11 +298,11 @@ or `py`.
     - Default options
     - e.g. `export FZF_DEFAULT_OPTS="--layout=reverse --inline-info"`
 
-#### Options
+### Options
 
 See the man page (`man fzf`) for the full list of options.
 
-#### Demo
+### Demo
 If you learn by watching videos, check out this screencast by [@samoshkin](https://github.com/samoshkin) to explore `fzf` features.
 
 <a title="fzf - command-line fuzzy finder" href="https://www.youtube.com/watch?v=qgG5Jhi_Els">
@@ -333,17 +353,37 @@ fish.
 
 - `CTRL-T` - Paste the selected files and directories onto the command-line
     - Set `FZF_CTRL_T_COMMAND` to override the default command
-    - Set `FZF_CTRL_T_OPTS` to pass additional options
+    - Set `FZF_CTRL_T_OPTS` to pass additional options to fzf
+      ```sh
+      # Preview file content using bat (https://github.com/sharkdp/bat)
+      export FZF_CTRL_T_OPTS="
+        --preview 'bat -n --color=always {}'
+        --bind 'ctrl-/:change-preview-window(down|hidden|)'"
+      ```
 - `CTRL-R` - Paste the selected command from history onto the command-line
     - If you want to see the commands in chronological order, press `CTRL-R`
       again which toggles sorting by relevance
-    - Set `FZF_CTRL_R_OPTS` to pass additional options
+    - Set `FZF_CTRL_R_OPTS` to pass additional options to fzf
+      ```sh
+      # CTRL-/ to toggle small preview window to see the full command
+      # CTRL-Y to copy the command into clipboard using pbcopy
+      export FZF_CTRL_R_OPTS="
+        --preview 'echo {}' --preview-window up:3:hidden:wrap
+        --bind 'ctrl-/:toggle-preview'
+        --bind 'ctrl-y:execute-silent(echo -n {2..} | pbcopy)+abort'
+        --color header:italic
+        --header 'Press CTRL-Y to copy command into clipboard'"
+      ```
 - `ALT-C` - cd into the selected directory
     - Set `FZF_ALT_C_COMMAND` to override the default command
-    - Set `FZF_ALT_C_OPTS` to pass additional options
+    - Set `FZF_ALT_C_OPTS` to pass additional options to fzf
+      ```sh
+      # Print tree structure in the preview window
+      export FZF_ALT_C_OPTS="--preview 'tree -C {}'"
+      ```
 
 If you're on a tmux session, you can start fzf in a tmux split-pane or in
-a tmux popup window by setting `FZF_TMUX_OPTS` (e.g. `-d 40%`).
+a tmux popup window by setting `FZF_TMUX_OPTS` (e.g. `export FZF_TMUX_OPTS='-p80%,60%'`).
 See `fzf-tmux --help` for available options.
 
 More tips can be found on [the wiki page](https://github.com/junegunn/fzf/wiki/Configuring-shell-key-bindings).
@@ -351,7 +391,7 @@ More tips can be found on [the wiki page](https://github.com/junegunn/fzf/wiki/C
 Fuzzy completion for bash and zsh
 ---------------------------------
 
-#### Files and directories
+### Files and directories
 
 Fuzzy completion for files and directories can be triggered if the word before
 the cursor ends with the trigger sequence, which is by default `**`.
@@ -380,7 +420,7 @@ cd **<TAB>
 cd ~/github/fzf**<TAB>
 ```
 
-#### Process IDs
+### Process IDs
 
 Fuzzy completion for PIDs is provided for kill command.
 
@@ -389,7 +429,7 @@ Fuzzy completion for PIDs is provided for kill command.
 kill -9 **<TAB>
 ```
 
-#### Host names
+### Host names
 
 For ssh and telnet commands, fuzzy completion for hostnames is provided. The
 names are extracted from /etc/hosts and ~/.ssh/config.
@@ -399,7 +439,7 @@ ssh **<TAB>
 telnet **<TAB>
 ```
 
-#### Environment variables / Aliases
+### Environment variables / Aliases
 
 ```sh
 unset **<TAB>
@@ -407,7 +447,7 @@ export **<TAB>
 unalias **<TAB>
 ```
 
-#### Settings
+### Settings
 
 ```sh
 # Use ~~ as the trigger sequence instead of the default **
@@ -429,7 +469,7 @@ _fzf_compgen_dir() {
   fd --type d --hidden --follow --exclude ".git" . "$1"
 }
 
-# (EXPERIMENTAL) Advanced customization of fzf options via _fzf_comprun function
+# Advanced customization of fzf options via _fzf_comprun function
 # - The first argument to the function is the name of the command.
 # - You should make sure to pass the rest of the arguments to fzf.
 _fzf_comprun() {
@@ -437,15 +477,15 @@ _fzf_comprun() {
   shift
 
   case "$command" in
-    cd)           fzf "$@" --preview 'tree -C {} | head -200' ;;
+    cd)           fzf --preview 'tree -C {} | head -200'   "$@" ;;
-    export|unset) fzf "$@" --preview "eval 'echo \$'{}" ;;
+    export|unset) fzf --preview "eval 'echo \$'{}"         "$@" ;;
-    ssh)          fzf "$@" --preview 'dig {}' ;;
+    ssh)          fzf --preview 'dig {}'                   "$@" ;;
-    *)            fzf "$@" ;;
+    *)            fzf --preview 'bat -n --color=always {}' "$@" ;;
   esac
 }
 ```
 
-#### Supported commands
+### Supported commands
 
 On bash, fuzzy completion is enabled only for a predefined set of commands
 (`complete | grep _fzf` to see the list). But you can enable it for other
@@ -457,7 +497,7 @@ _fzf_setup_completion path ag git kubectl
 _fzf_setup_completion dir tree
 ```
 
-#### Custom fuzzy completion
+### Custom fuzzy completion
 
 _**(Custom completion API is experimental and subject to change)**_
 
@@ -517,9 +557,8 @@ Advanced topics
 
 ### Performance
 
-fzf is fast and is [getting even faster][perf]. Performance should not be
+fzf is fast. Performance should not be a problem in most use cases. However,
-a problem in most use cases. However, you might want to be aware of the
+you might want to be aware of the options that can affect performance.
-options that affect performance.
 
 - `--ansi` tells fzf to extract and parse ANSI color codes in the input, and it
   makes the initial scanning slower. So it's not recommended that you add it
@@ -527,12 +566,6 @@ options that affect performance.
 - `--nth` makes fzf slower because it has to tokenize each line.
 - `--with-nth` makes fzf slower as fzf has to tokenize and reassemble each
   line.
-- If you absolutely need better performance, you can consider using
-  `--algo=v1` (the default being `v2`) to make fzf use a faster greedy
-  algorithm. However, this algorithm is not guaranteed to find the optimal
-  ordering of the matches and is not recommended.
-
-[perf]: https://junegunn.kr/images/fzf-0.17.0.png
 
 ### Executing external programs
 
@@ -547,6 +580,47 @@ fzf --bind 'f1:execute(less -f {}),ctrl-y:execute-silent(echo {} | pbcopy)+abort
 
 See *KEY BINDINGS* section of the man page for details.
 
+### Turning into a different process
+
+`become(...)` is similar to `execute(...)`/`execute-silent(...)` described
+above, but instead of executing the command and coming back to fzf on
+complete, it turns fzf into a new process for the command.
+
+```sh
+fzf --bind 'enter:become(vim {})'
+```
+
+Compared to the seemingly equivalent command substitution `vim "$(fzf)"`, this
+approach has several advantages:
+
+* Vim will not open an empty file when you terminate fzf with
+  <kbd>CTRL-C</kbd>
+* Vim will not open an empty file when you press <kbd>ENTER</kbd> on an empty
+  result
+* Can handle multiple selections even when they have whitespaces
+  ```sh
+  fzf --multi --bind 'enter:become(vim {+})'
+  ```
+
+To be fair, running `fzf --print0 | xargs -0 -o vim` instead of `vim "$(fzf)"`
+resolves all of the issues mentioned. Nonetheless, `become(...)` still offers
+additional benefits in different scenarios.
+
+* You can set up multiple bindings to handle the result in different ways
+  without any wrapping script
+  ```sh
+  fzf --bind 'enter:become(vim {}),ctrl-e:become(emacs {})'
+  ```
+  * Previously, you would have to use `--expect=ctrl-e` and check the first
+    line of the output of fzf
+* You can easily build the subsequent command using the field index
+  expressions of fzf
+  ```sh
+  # Open the file in Vim and go to the line
+  git grep --line-number . |
+      fzf --delimiter : --nth 3.. --bind 'enter:become(vim {1} +{2})'
+  ```
+
 ### Reloading the candidate list
 
 By binding `reload` action to a key or an event, you can make fzf dynamically
@@ -556,8 +630,8 @@ more details.
 #### 1. Update the list of processes by pressing CTRL-R
 
 ```sh
-FZF_DEFAULT_COMMAND='ps -ef' \
+ps -ef |
-  fzf --bind 'ctrl-r:reload(eval "$FZF_DEFAULT_COMMAND")' \
+  fzf --bind 'ctrl-r:reload(ps -ef)' \
       --header 'Press CTRL-R to reload' --header-lines=1 \
       --height=50% --layout=reverse
 ```
@@ -579,11 +653,11 @@ expression `{q}`. Also, note that we used `--disabled` option so that fzf
 doesn't perform any secondary filtering.
 
 ```sh
-INITIAL_QUERY=""
+: | rg_prefix='rg --column --line-number --no-heading --color=always --smart-case' \
-RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
+    fzf --bind 'start:reload:$rg_prefix ""' \
-FZF_DEFAULT_COMMAND="$RG_PREFIX '$INITIAL_QUERY'" \
+        --bind 'change:reload:$rg_prefix {q} || true' \
-  fzf --bind "change:reload:$RG_PREFIX {q} || true" \
+        --bind 'enter:become(vim {1} +{2})' \
-      --ansi --disabled --query "$INITIAL_QUERY" \
+        --ansi --disabled \
         --height=50% --layout=reverse
 ```
 
@@ -591,8 +665,8 @@ If ripgrep doesn't find any matches, it will exit with a non-zero exit status,
 and fzf will warn you about it. To suppress the warning message, we added
 `|| true` to the command, so that it always exits with 0.
 
-See ["Using fzf as interative Ripgrep launcher"](https://github.com/junegunn/fzf/blob/master/ADVANCED.md#using-fzf-as-interative-ripgrep-launcher)
+See ["Using fzf as interactive Ripgrep launcher"](https://github.com/junegunn/fzf/blob/master/ADVANCED.md#using-fzf-as-interactive-ripgrep-launcher)
-for a fuller example with preview window options.
+for more sophisticated examples.
 
 ### Preview window
 
@@ -612,7 +686,7 @@ syntax-highlights the content of a file, such as
 [Highlight](http://www.andre-simon.de/doku/highlight/en/highlight.php):
 
 ```bash
-fzf --preview 'bat --style=numbers --color=always --line-range :500 {}'
+fzf --preview 'bat --color=always {}' --preview-window '~3'
 ```
 
 You can customize the size, position, and border of the preview window using
@@ -622,6 +696,7 @@ You can customize the size, position, and border of the preview window using
 ```bash
 fzf --height 40% --layout reverse --info inline --border \
     --preview 'file {}' --preview-window up,1,border-horizontal \
+    --bind 'ctrl-/:change-preview-window(50%|hidden|)' \
     --color 'fg:#bbccdd,fg+:#ddeeff,bg:#334455,preview-bg:#223344,border:#778899'
 ```
 
@@ -649,7 +724,7 @@ history | fzf
 Tips
 ----
 
-#### Respecting `.gitignore`
+### Respecting `.gitignore`
 
 You can use [fd](https://github.com/sharkdp/fd),
 [ripgrep](https://github.com/BurntSushi/ripgrep), or [the silver
@@ -678,7 +753,7 @@ hidden files, use the following command:
 export FZF_DEFAULT_COMMAND='fd --type f --strip-cwd-prefix --hidden --follow --exclude .git'
 ```
 
-#### Fish shell
+### Fish shell
 
 `CTRL-T` key binding of fish, unlike those of bash and zsh, will use the last
 token on the command-line as the root directory for the recursive search. For
@@ -708,4 +783,4 @@ https://github.com/junegunn/fzf/wiki/Related-projects
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2023 Junegunn Choi

bin/fzf-tmux

@@ -179,15 +179,20 @@ trap 'cleanup' EXIT
 
 envs="export TERM=$TERM "
 if [[ "$opt" =~ "-E" ]]; then
-  FZF_DEFAULT_OPTS="--margin 0,1 $FZF_DEFAULT_OPTS"
+  tmux_version=$(tmux -V | sed 's/[^0-9.]//g')
-  tmux_verson=$(tmux -V)
+  if [[ $(awk '{print ($1 > 3.2)}' <<< "$tmux_version" 2> /dev/null || bc -l <<< "$tmux_version > 3.2") = 1 ]]; then
-  if [[ ! $tmux_verson =~ 3\.2 ]]; then
     FZF_DEFAULT_OPTS="--border $FZF_DEFAULT_OPTS"
     opt="-B $opt"
+  elif [[ $tmux_version = 3.2 ]]; then
+    FZF_DEFAULT_OPTS="--margin 0,1 $FZF_DEFAULT_OPTS"
+  else
+    echo "fzf-tmux: tmux 3.2 or above is required for popup mode" >&2
+    exit 2
   fi
 fi
 [[ -n "$FZF_DEFAULT_OPTS"    ]] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
 [[ -n "$FZF_DEFAULT_COMMAND" ]] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
+[[ -n "$BAT_THEME" ]] && envs="$envs BAT_THEME=$(printf %q "$BAT_THEME")"
 echo "$envs;" > "$argsf"
 
 # Build arguments to fzf

doc/fzf.txt

@@ -1,4 +1,4 @@
-fzf.txt	fzf	Last change: May 19 2021
+fzf.txt	fzf	Last change: Mar 20 2023
 FZF - TABLE OF CONTENTS                                            *fzf* *fzf-toc*
 ==============================================================================
 
@@ -32,7 +32,7 @@ depending on the package manager.
     " If installed using Homebrew
     set rtp+=/usr/local/opt/fzf
 
-    " If installed using git
+    " If you have cloned fzf on ~/.fzf directory
     set rtp+=~/.fzf
 <
 If you use {vim-plug}{1}, the same can be written as:
@@ -40,7 +40,7 @@ If you use {vim-plug}{1}, the same can be written as:
     " If installed using Homebrew
     Plug '/usr/local/opt/fzf'
 
-    " If installed using git
+    " If you have cloned fzf on ~/.fzf directory
     Plug '~/.fzf'
 <
 But if you want the latest Vim plugin file from GitHub rather than the one
@@ -143,7 +143,7 @@ Examples~
 
     " An action can be a reference to a function that processes selected lines
     function! s:build_quickfix_list(lines)
-      call setqflist(map(copy(a:lines), '{ "filename": v:val }'))
+      call setqflist(map(copy(a:lines), '{ "filename": v:val, "lnum": 1 }'))
       copen
       cc
     endfunction
@@ -325,7 +325,7 @@ following options are allowed:
    - `yoffset` [float default 0.5 range [0 ~ 1]]
    - `xoffset` [float default 0.5 range [0 ~ 1]]
    - `relative` [boolean default v:false]
-   - `border` [string default `rounded`]: Border style
+   - `border` [string default `rounded` (`sharp` on Windows)]: Border style
      - `rounded` / `sharp` / `horizontal` / `vertical` / `top` / `bottom` / `left` / `right` / `no[ne]`
 
 
@@ -506,7 +506,7 @@ LICENSE                                                            *fzf-license*
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2023 Junegunn Choi
 
 ==============================================================================
 vim:tw=78:sw=2:ts=2:ft=help:norl:nowrap:

go.mod

@@ -1,21 +1,21 @@
 module github.com/junegunn/fzf
 
 require (
-	github.com/gdamore/tcell/v2 v2.5.3
+	github.com/gdamore/tcell/v2 v2.5.4
-	github.com/mattn/go-isatty v0.0.16
+	github.com/mattn/go-isatty v0.0.17
 	github.com/mattn/go-runewidth v0.0.14
 	github.com/mattn/go-shellwords v1.0.12
-	github.com/rivo/uniseg v0.4.2
+	github.com/rivo/uniseg v0.4.4
 	github.com/saracen/walker v0.1.3
-	golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab
+	golang.org/x/sys v0.8.0
-	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
+	golang.org/x/term v0.8.0
 )
 
 require (
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
-	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
+	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 // indirect
-	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/text v0.5.0 // indirect
 )
 
 go 1.17

go.sum

@@ -1,32 +1,49 @@
 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 v2.5.3 h1:b9XQrT6QGbgI7JvZOJXFNczOQeIYbo8BfeSMzt2sAV0=
+github.com/gdamore/tcell/v2 v2.5.4 h1:TGU4tSjD3sCL788vFNeJnTdzpNKIw1H5dgLnJRQVv/k=
-github.com/gdamore/tcell/v2 v2.5.3/go.mod h1:wSkrPaXoiIWZqW/g7Px4xc79di6FTcpB8tvaKJ6uGBo=
+github.com/gdamore/tcell/v2 v2.5.4/go.mod h1:dZgRy5v4iMobMEcWNYBtREnDZAT9DYmfqIkrgEMxLyw=
 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 v0.0.16 h1:bq3VjFmv/sOjHtdEhmkEV4x1AJtvUvOJ2PFAZ5+peKQ=
+github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
-github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
-github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 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-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 v0.4.2 h1:YwD0ulJSJytLpiaWua0sBDusfsCZohxjxzVTYjwxfV8=
+github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
-github.com/rivo/uniseg v0.4.2/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+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=
-golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f h1:Ax0t5p6N38Ga0dThY21weqDEyz2oklo4IvDkpigvkD8=
+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/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/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/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/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 v0.0.0-20220318055525-2edf467146b5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab h1:2QkjZIsXupsJbJIdSjjUOgWK3aEtzyuh2mPt3l/CkeU=
+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/term v0.0.0-20201210144234-2321bbc49cbf/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+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 v0.8.0 h1:n5xxQn2i3PC0yLAbjTpNT85q/Kgzcr2gIoX9OrJUols=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+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/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/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

install

@@ -2,7 +2,7 @@
 
 set -u
 
-version=0.35.0
+version=0.42.0
 auto_completion=
 key_bindings=
 update_config=2
@@ -176,7 +176,9 @@ case "$archi" in
   Linux\ armv8*)      download fzf-$version-linux_arm64.tar.gz   ;;
   Linux\ aarch64*)    download fzf-$version-linux_arm64.tar.gz   ;;
   Linux\ loongarch64) download fzf-$version-linux_loong64.tar.gz ;;
+  Linux\ ppc64le)     download fzf-$version-linux_ppc64le.tar.gz ;;
   Linux\ *64)         download fzf-$version-linux_amd64.tar.gz   ;;
+  Linux\ s390x)       download fzf-$version-linux_s390x.tar.gz   ;;
   FreeBSD\ *64)       download fzf-$version-freebsd_amd64.tar.gz ;;
   OpenBSD\ *64)       download fzf-$version-openbsd_amd64.tar.gz ;;
   CYGWIN*\ *64)       download fzf-$version-windows_amd64.zip    ;;

install.ps1

@@ -1,4 +1,4 @@
-$version="0.35.0"
+$version="0.42.0"
 
 $fzf_base=Split-Path -Parent $MyInvocation.MyCommand.Definition
 

main.go

@@ -5,7 +5,7 @@ import (
 	"github.com/junegunn/fzf/src/protector"
 )
 
-var version string = "0.35"
+var version string = "0.42"
 var revision string = "devel"
 
 func main() {

man/man1/fzf-tmux.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2023 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 2022" "fzf 0.35.0" "fzf-tmux - open fzf in tmux split pane"
+.TH fzf-tmux 1 "Jun 2023" "fzf 0.42.0" "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) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2023 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 2022" "fzf 0.35.0" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "Jun 2023" "fzf 0.42.0" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -92,6 +92,19 @@ interface rather than a "fuzzy finder". You can later enable the search using
 .B "+s, --no-sort"
 Do not sort the result
 .TP
+.B "--track"
+Make fzf track the current selection when the result list is updated.
+This can be useful when browsing logs using fzf with sorting disabled. It is
+not recommended to use this option with \fB--tac\fR as the resulting behavior
+can be confusing. Also, consider using \fBtrack\fR action instead of this
+option.
+
+.RS
+e.g.
+     \fBgit log --oneline --graph --color=always | nl |
+         fzf --ansi --track --no-sort --layout=reverse-list\fR
+.RE
+.TP
 .B "--tac"
 Reverse the order of the input
 
@@ -215,6 +228,10 @@ Draw border around the finder
 .br
 .BR double "        Border with double lines"
 .br
+.BR block "         Border using block elements; suitable when using different background colors"
+.br
+.BR thinblock "     Border using legacy computing symbols; may not be displayed on some terminals"
+.br
 .BR horizontal "    Horizontal lines above and below the finder"
 .br
 .BR vertical "      Vertical lines on each side of the finder"
@@ -230,6 +247,11 @@ Draw border around the finder
 .BR none
 .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.
+
 .TP
 .BI "--border-label" [=LABEL]
 Label to print on the horizontal border line. Should be used with one of the
@@ -276,7 +298,8 @@ the label. Label is printed on the top border line by default, add
 
 .TP
 .B "--no-unicode"
-Use ASCII characters instead of Unicode box drawing characters to draw border
+Use ASCII characters instead of Unicode drawing characters to draw borders,
+the spinner and the horizontal separator.
 
 .TP
 .BI "--margin=" MARGIN
@@ -334,7 +357,11 @@ Determines the display style of finder info (match counters).
 .br
 .BR default "          Display on the next line to the prompt"
 .br
-.BR inline "        Display on the same line"
+.BR inline "           Display on the same line with the default separator ' < '"
+.br
+.BR inline:SEPARATOR " Display on the same line with a non-default separator"
+.br
+.BR inline-right "     Display on the right end of the same line
 .br
 .BR hidden "           Do not display finder info"
 .br
@@ -355,6 +382,16 @@ ANSI color codes are supported.
 Do not display horizontal separator on the info line. A synonym for
 \fB--separator=''\fB
 
+.TP
+.BI "--scrollbar=" "CHAR1[CHAR2]"
+Use the given character to render scrollbar. (default: '│' or ':' depending on
+\fB--no-unicode\fR). The optional \fBCHAR2\fR is used to render scrollbar of
+the preview window.
+
+.TP
+.B "--no-scrollbar"
+Do not display scrollbar. A synonym for \fB--scrollbar=''\fB
+
 .TP
 .BI "--prompt=" "STR"
 Input prompt (default: '> ')
@@ -404,20 +441,24 @@ color mappings.
 
 .B COLOR NAMES:
     \fBfg                  \fRText
-    \fBbg         \fRBackground
       \fBpreview-fg        \fRPreview window text
+    \fBbg                  \fRBackground
       \fBpreview-bg        \fRPreview window background
     \fBhl                  \fRHighlighted substrings
     \fBfg+                 \fRText (current line)
     \fBbg+                 \fRBackground (current line)
-    \fBgutter     \fRGutter on the left (defaults to \fBbg+\fR)
+      \fBgutter            \fRGutter on the left
     \fBhl+                 \fRHighlighted substrings (current line)
     \fBquery               \fRQuery string
-    \fBdisabled   \fRQuery string when search is disabled
+      \fBdisabled          \fRQuery string when search is disabled (\fB--disabled\fR)
     \fBinfo                \fRInfo line (match counters)
-    \fBseparator  \fRHorizontal separator on info line (match counters)
     \fBborder              \fRBorder around the window (\fB--border\fR and \fB--preview\fR)
+      \fBscrollbar         \fRScrollbar
+      \fBpreview-border    \fRBorder around the preview window (\fB--preview\fR)
+      \fBpreview-scrollbar \fRScrollbar
+      \fBseparator         \fRHorizontal separator on info line
     \fBlabel               \fRBorder label (\fB--border-label\fR and \fB--preview-label\fR)
+      \fBpreview-label     \fRBorder label of the preview window (\fB--preview-label\fR)
     \fBprompt              \fRPrompt
     \fBpointer             \fRPointer to the current line
     \fBmarker              \fRMulti-select marker
@@ -480,7 +521,7 @@ Use black background
 .BI "--history=" "HISTORY_FILE"
 Load search history from the specified file and update the file on completion.
 When enabled, \fBCTRL-N\fR and \fBCTRL-P\fR are automatically remapped to
-\fBnext-history\fR and \fBprevious-history\fR.
+\fBnext-history\fR and \fBprev-history\fR.
 .TP
 .BI "--history-size=" "N"
 Maximum number of entries in the history file (default: 1000). The file is
@@ -534,7 +575,8 @@ e.g.
 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
-query if any of the placeholder expressions evaluates to a non-empty string.
+query if any of the placeholder expressions evaluates to a non-empty string
+or \fB{q}\fR is in the command template.
 
 Since 0.24.0, fzf can render partial preview content before the preview command
 completes. ANSI escape sequence for clearing the display (\fBCSI 2 J\fR) is
@@ -555,14 +597,18 @@ Label to print on the horizontal border line of the preview window.
 Should be used with one of the following \fB--preview-window\fR options.
 
 .br
-.B * border-rounded (default)
+.B * border-rounded (default on non-Windows platforms)
 .br
-.B * border-sharp
+.B * border-sharp (default on Windows)
 .br
 .B * border-bold
 .br
 .B * border-double
 .br
+.B * border-block
+.br
+.B * border-thinblock
+.br
 .B * border-horizontal
 .br
 .B * border-top
@@ -719,6 +765,24 @@ ncurses finder only after the input stream is complete.
 e.g. \fBfzf --multi | fzf --sync\fR
 .RE
 .TP
+.B "--listen[=HTTP_PORT]"
+Start HTTP server on the given port. It allows external processes to send
+actions to perform via POST method. If the port number is omitted or given as
+0, fzf will choose the port automatically and export it as \fBFZF_PORT\fR
+environment variable to the child processes started via \fBexecute\fR and
+\fBexecute-silent\fR actions.
+
+e.g.
+     \fB# Start HTTP server on port 6266
+     fzf --listen 6266
+
+     # Send action to the server
+     curl -XPOST localhost:6266 -d 'reload(seq 100)+change-prompt(hundred> )'
+
+     # Choose port automatically and export it as $FZF_PORT to the child process
+     fzf --listen --bind 'start:execute-silent:echo $FZF_PORT > /tmp/fzf-port'
+     \fR
+.TP
 .B "--version"
 Display version information and exit
 
@@ -819,6 +883,8 @@ e.g.
 .br
 \fIctrl-space\fR
 .br
+\fIctrl-delete\fR
+.br
 \fIctrl-\\\fR
 .br
 \fIctrl-]\fR
@@ -887,6 +953,8 @@ e.g.
 .br
 \fIshift-right\fR
 .br
+\fIshift-delete\fR
+.br
 \fIalt-shift-up\fR
 .br
 \fIalt-shift-down\fR
@@ -913,6 +981,15 @@ 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
+list is complete.
+
+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
 \fIchange\fR
 .RS
 Triggered whenever the query string is changed
@@ -921,6 +998,44 @@ e.g.
      \fB# Move cursor to the first entry whenever the query is changed
      fzf --bind change:first\fR
 .RE
+\fIfocus\fR
+.RS
+Triggered when the focus changes due to a vertical cursor movement or a search
+result update.
+
+e.g.
+     \fBfzf --bind 'focus:transform-preview-label:echo [ {} ]' --preview 'cat {}'
+
+     # Any action bound to the event runs synchronously and thus can make the interface sluggish
+     # e.g. lolcat isn't one of the fastest programs, and every cursor movement in
+     #      fzf will be noticeably affected by its execution time
+     fzf --bind 'focus:transform-preview-label:echo [ {} ] | lolcat -f' --preview 'cat {}'
+
+     # 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
+to \fB--select-1\fR option, but the difference is that \fB--select-1\fR is only
+effective before the interactive finder starts but \fBone\fR event is triggered
+by the interactive finder.
+
+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
+\fB--exit-0\fR option, but the difference is that \fB--exit-0\fR is only
+effective before the interactive finder starts but \fBzero\fR event is
+triggered by the interactive finder.
+
+e.g.
+     \fB# Reload the candidate list when there's no match
+     echo $RANDOM | fzf --bind 'zero:reload(echo $RANDOM)+clear-query' --height 3\fR
+.RE
 
 \fIbackward-eof\fR
 .RS
@@ -943,11 +1058,16 @@ A key or an event can be bound to one or more of the following actions.
     \fBbackward-delete-char/eof\fR     (same as \fBbackward-delete-char\fR except aborts fzf if query is empty)
     \fBbackward-kill-word\fR           \fIalt-bs\fR
     \fBbackward-word\fR                \fIalt-b   shift-left\fR
+    \fBbecome(...)\fR                  (replace fzf process with the specified command; see below for the details)
     \fBbeginning-of-line\fR            \fIctrl-a  home\fR
     \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-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 '|')
     \fBchange-prompt(...)\fR           (change prompt to the given string)
+    \fBchange-query(...)\fR            (change query string to the given string)
     \fBclear-screen\fR                 \fIctrl-l\fR
     \fBclear-selection\fR              (clear multi-selection)
     \fBclose\fR                        (close preview window if open, abort fzf otherwise)
@@ -962,7 +1082,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBend-of-line\fR                  \fIctrl-e  end\fR
     \fBexecute(...)\fR                 (see below for the details)
     \fBexecute-silent(...)\fR          (see below for the details)
-    \fBfirst\fR                      (move to the first match)
+    \fBfirst\fR                        (move to the first match; same as \fBpos(1)\fR)
     \fBforward-char\fR                 \fIctrl-f  right\fR
     \fBforward-word\fR                 \fIalt-f   shift-right\fR
     \fBignore\fR
@@ -970,12 +1090,17 @@ A key or an event can be bound to one or more of the following actions.
     \fBjump-accept\fR                  (jump and accept)
     \fBkill-line\fR
     \fBkill-word\fR                    \fIalt-d\fR
-    \fBlast\fR                       (move to the last match)
+    \fBlast\fR                         (move to the last match; same as \fBpos(-1)\fR)
     \fBnext-history\fR                 (\fIctrl-n\fR on \fB--history\fR)
+    \fBnext-selected\fR                (move to the next selected item)
     \fBpage-down\fR                    \fIpgdn\fR
     \fBpage-up\fR                      \fIpgup\fR
     \fBhalf-page-down\fR
     \fBhalf-page-up\fR
+    \fBhide-preview\fR
+    \fBpos(...)\fR                     (move cursor to the numeric position; negative number to count from the end)
+    \fBprev-history\fR                 (\fIctrl-p\fR on \fB--history\fR)
+    \fBprev-selected\fR                (move to the previous selected item)
     \fBpreview(...)\fR                 (see below for the details)
     \fBpreview-down\fR                 \fIshift-down\fR
     \fBpreview-up\fR                   \fIshift-up\fR
@@ -985,15 +1110,17 @@ A key or an event can be bound to one or more of the following actions.
     \fBpreview-half-page-up\fR
     \fBpreview-bottom\fR
     \fBpreview-top\fR
-    \fBprevious-history\fR           (\fIctrl-p\fR on \fB--history\fR)
     \fBprint-query\fR                  (print query and exit)
     \fBput\fR                          (put the character to the prompt)
+    \fBput(...)\fR                     (put the given string to the prompt)
     \fBrefresh-preview\fR
     \fBrebind(...)\fR                  (rebind bindings after \fBunbind\fR)
     \fBreload(...)\fR                  (see below for the details)
+    \fBreload-sync(...)\fR             (see below for the details)
     \fBreplace-query\fR                (replace query string with the current selection)
     \fBselect\fR
     \fBselect-all\fR                   (select all matches)
+    \fBshow-preview\fR
     \fBtoggle\fR                       (\fIright-click\fR)
     \fBtoggle-all\fR                   (toggle all matches)
     \fBtoggle+down\fR                  \fIctrl-i  (tab)\fR
@@ -1003,7 +1130,14 @@ 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+up\fR                    \fIbtab    (shift-tab)\fR
+    \fBtrack\fR                        (track the current item; automatically disabled if focus changes)
+    \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)
+    \fBtransform-prompt(...)\fR        (transform prompt string using an external command)
+    \fBtransform-query(...)\fR         (transform query string using an external command)
     \fBunbind(...)\fR                  (unbind bindings)
     \fBunix-line-discard\fR            \fIctrl-u\fR
     \fBunix-word-rubout\fR             \fIctrl-w\fR
@@ -1031,6 +1165,8 @@ that case, you can use any of the following alternative notations to avoid
 parse errors.
 
     \fBaction-name[...]\fR
+    \fBaction-name{...}\fR
+    \fBaction-name<...>\fR
     \fBaction-name~...~\fR
     \fBaction-name!...!\fR
     \fBaction-name@...@\fR
@@ -1071,6 +1207,14 @@ On *nix systems, fzf runs the command 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.
 
+\fBbecome(...)\fR action is similar to \fBexecute(...)\fR, but it replaces the
+current fzf process with the specified command using \fBexecve(2)\fR system
+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
@@ -1091,6 +1235,16 @@ e.g.
        fzf --bind "change:reload:$RG_PREFIX {q} || true" \\
            --ansi --disabled --query "$INITIAL_QUERY"\fR
 
+\fBreload-sync(...)\fR is a synchronous version of \fBreload\fR that replaces
+the list only when the command is complete. This is useful when the command
+takes a while to produce the initial output and you don't want fzf to run
+against an empty list while the command is running.
+
+
+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 PREVIEW BINDING
 
 With \fBpreview(...)\fR action, you can specify multiple different preview

plugin/fzf.vim

@@ -1,4 +1,4 @@
-" Copyright (c) 2017 Junegunn Choi
+" Copyright (c) 2013-2023 Junegunn Choi
 "
 " MIT License
 "
@@ -164,7 +164,7 @@ function s:get_version(bin)
   if has_key(s:versions, a:bin)
     return s:versions[a:bin]
   end
-  let command = (&shell =~ 'powershell' ? '&' : '') . s:fzf_call('shellescape', a:bin) . ' --version --no-height'
+  let command = (&shell =~ 'powershell\|pwsh' ? '&' : '') . s:fzf_call('shellescape', a:bin) . ' --version --no-height'
   let output = systemlist(command)
   if v:shell_error || empty(output)
     return ''
@@ -456,6 +456,30 @@ function! s:writefile(...)
   endif
 endfunction
 
+function! s:extract_option(opts, name)
+  let opt = ''
+  let expect = 0
+  " There are a few cases where this function doesn't work as expected.
+  " Let's just assume such cases are extremely unlikely in real world.
+  "   e.g. --query --border
+  for word in split(a:opts)
+    if expect && word !~ '^"\=-'
+      let opt = opt . ' ' . word
+      let expect = 0
+    elseif word == '--no-'.a:name
+      let opt = ''
+    elseif word =~ '^--'.a:name.'='
+      let opt = word
+    elseif word =~ '^--'.a:name.'$'
+      let opt = word
+      let expect = 1
+    elseif expect
+      let expect = 0
+    endif
+  endfor
+  return opt
+endfunction
+
 function! fzf#run(...) abort
 try
   let [shell, shellslash, shellcmdflag, shellxquote] = s:use_sh()
@@ -511,7 +535,8 @@ try
     let height = s:calc_size(&lines, dict.down, dict)
     let optstr .= ' --height='.height
   endif
-  let optstr .= s:border_opt(get(dict, 'window', 0))
+  " 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
@@ -738,7 +763,7 @@ function! s:calc_size(max, val, dict)
     return size
   endif
   let margin = match(opts, '--inline-info\|--info[^-]\{-}inline') > match(opts, '--no-inline-info\|--info[^-]\{-}\(default\|hidden\)') ? 1 : 2
-  let margin += stridx(opts, '--border') > stridx(opts, '--no-border') ? 2 : 0
+  let margin += match(opts, '--border\([^-]\|$\)') > match(opts, '--no-border\([^-]\|$\)') ? 2 : 0
   if stridx(opts, '--header') > stridx(opts, '--no-header')
     let margin += len(split(opts, "\n"))
   endif
@@ -755,9 +780,9 @@ function! s:border_opt(window)
   endif
 
   " Border style
-  let style = tolower(get(a:window, 'border', 'rounded'))
+  let style = tolower(get(a:window, 'border', ''))
-  if !has_key(a:window, 'border') && !get(a:window, 'rounded', 1)
+  if !has_key(a:window, 'border') && has_key(a:window, 'rounded')
-    let style = 'sharp'
+    let style = a:window.rounded ? 'rounded' : 'sharp'
   endif
   if style == 'none' || style == 'no'
     return ''
@@ -765,7 +790,7 @@ function! s:border_opt(window)
 
   " For --border styles, we need fzf 0.24.0 or above
   call fzf#exec('0.24.0')
-  let opt = ' --border=' . style
+  let opt = ' --border ' . style
   if has_key(a:window, 'highlight')
     let color = s:get_color('fg', a:window.highlight)
     if len(color)
@@ -827,6 +852,17 @@ if exists(':tnoremap')
   tnoremap <silent> <Plug>(fzf-normal) <C-\><C-n>
 endif
 
+let s:warned = 0
+function! s:handle_ambidouble(dict)
+  if &ambiwidth == 'double'
+    let a:dict.env = { 'RUNEWIDTH_EASTASIAN': '1' }
+  elseif !s:warned && $RUNEWIDTH_EASTASIAN == '1' && &ambiwidth !=# 'double'
+    call s:warn("$RUNEWIDTH_EASTASIAN is '1' but &ambiwidth is not 'double'")
+    2sleep
+    let s:warned = 1
+  endif
+endfunction
+
 function! s:execute_term(dict, command, temps) abort
   let winrest = winrestcmd()
   let pbuf = bufnr('')
@@ -896,6 +932,7 @@ function! s:execute_term(dict, command, temps) abort
     endif
     let command .= s:term_marker
     if has('nvim')
+      call s:handle_ambidouble(fzf)
       call termopen(command, fzf)
     else
       let term_opts = {'exit_cb': function(fzf.on_exit)}
@@ -907,6 +944,7 @@ function! s:execute_term(dict, command, temps) abort
       else
         let term_opts.curwin = 1
       endif
+      call s:handle_ambidouble(term_opts)
       let fzf.buf = term_start([&shell, &shellcmdflag, command], term_opts)
       if is_popup && exists('#TerminalWinOpen')
         doautocmd <nomodeline> TerminalWinOpen

shell/completion.bash

@@ -270,8 +270,9 @@ _fzf_complete_kill() {
 }
 
 _fzf_proc_completion() {
-  _fzf_complete -m --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+  _fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
-    command ps -ef | sed 1d
+    command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
+      command ps -eo user,pid,ppid,time,args # For BusyBox
   )
 }
 
@@ -309,8 +310,8 @@ complete -o default -F _fzf_opts_completion fzf-tmux
 
 d_cmds="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
 a_cmds="
-  awk cat diff diff3
+  awk bat cat diff diff3
-  emacs emacsclient ex file ftp g++ gcc gvim head hg java
+  emacs emacsclient ex file ftp g++ gcc gvim head hg hx java
   javac ld less more mvim nvim patch perl python ruby
   sed sftp sort source tail tee uniq vi view vim wc xdg-open
   basename bunzip2 bzip2 chmod chown curl cp dirname du
@@ -373,7 +374,7 @@ _fzf_setup_completion() {
 }
 
 # Environment variables / Aliases / Hosts / Process
-_fzf_setup_completion 'var'   export unset
+_fzf_setup_completion 'var'   export unset printenv
 _fzf_setup_completion 'alias' unalias
 _fzf_setup_completion 'host'  ssh telnet
 _fzf_setup_completion 'proc'  kill

shell/completion.zsh

@@ -251,8 +251,9 @@ _fzf_complete_unalias() {
 }
 
 _fzf_complete_kill() {
-  _fzf_complete -m --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+  _fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
-    command ps -ef | sed 1d
+    command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
+      command ps -eo user,pid,ppid,time,args # For BusyBox
   )
 }
 

src/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2023 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/algo/algo.go

@@ -617,7 +617,7 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 func calculateScore(caseSensitive bool, normalize bool, text *util.Chars, pattern []rune, sidx int, eidx int, withPos bool) (int, *[]int) {
 	pidx, score, inGap, consecutive, firstBonus := 0, 0, false, 0, int16(0)
 	pos := posArray(withPos, len(pattern))
-	prevClass := charWhite
+	prevClass := initialCharClass
 	if sidx > 0 {
 		prevClass = charClassOf(text.Get(sidx - 1))
 	}

src/core.go

@@ -138,7 +138,9 @@ func Run(opts *Options, version string, revision string) {
 			opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, opts.Normalize, forward, withPos,
 			opts.Filter == nil, opts.Nth, opts.Delimiter, runes)
 	}
-	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox)
+	inputRevision := 0
+	snapshotRevision := 0
+	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox, inputRevision)
 
 	// Filtering mode
 	if opts.Filter != nil {
@@ -209,25 +211,15 @@ func Run(opts *Options, version string, revision string) {
 
 	// Event coordination
 	reading := true
-	clearCache := util.Once(false)
-	clearSelection := util.Once(false)
 	ticks := 0
 	var nextCommand *string
-	restart := func(command string) {
-		reading = true
-		clearCache = util.Once(true)
-		clearSelection = util.Once(true)
-		chunkList.Clear()
-		itemIndex = 0
-		header = make([]string, 0, opts.HeaderLines)
-		go reader.restart(command)
-	}
 	eventBox.Watch(EvtReadNew)
 	total := 0
 	query := []rune{}
 	determine := func(final bool) {
 		if heightUnknown {
 			if total >= maxFit || final {
+				deferred = false
 				heightUnknown = false
 				terminal.startChan <- fitpad{util.Min(total, maxFit), padHeight}
 			}
@@ -236,10 +228,23 @@ func Run(opts *Options, version string, revision string) {
 			terminal.startChan <- fitpad{-1, -1}
 		}
 	}
+
+	useSnapshot := false
+	var snapshot []*Chunk
+	var count int
+	restart := func(command string) {
+		reading = true
+		chunkList.Clear()
+		itemIndex = 0
+		inputRevision++
+		header = make([]string, 0, opts.HeaderLines)
+		go reader.restart(command)
+	}
 	for {
 		delay := true
 		ticks++
-		input := func(reloaded bool) []rune {
+		input := func() []rune {
+			reloaded := snapshotRevision != inputRevision
 			paused, input := terminal.Input()
 			if reloaded && paused {
 				query = []rune{}
@@ -267,25 +272,35 @@ func Run(opts *Options, version string, revision string) {
 					} else {
 						reading = reading && evt == EvtReadNew
 					}
-					snapshot, count := chunkList.Snapshot()
+					if useSnapshot && evt == EvtReadFin {
+						useSnapshot = false
+					}
+					if !useSnapshot {
+						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), false)
+						terminal.UpdateList(PassMerger(&snapshot, opts.Tac, snapshotRevision))
 					}
 					if heightUnknown && !deferred {
 						determine(!reading)
 					}
-					reset := clearCache()
+					matcher.Reset(snapshot, input(), false, !reading, sort, snapshotRevision)
-					matcher.Reset(snapshot, input(reset), false, !reading, sort, reset)
 
 				case EvtSearchNew:
 					var command *string
+					var changed bool
 					switch val := value.(type) {
 					case searchRequest:
 						sort = val.sort
 						command = val.command
+						changed = val.changed
+						if command != nil {
+							useSnapshot = val.sync
+						}
 					}
 					if command != nil {
 						if reading {
@@ -294,11 +309,20 @@ func Run(opts *Options, version string, revision string) {
 						} else {
 							restart(*command)
 						}
+					}
+					if !changed {
 						break
 					}
-					snapshot, _ := chunkList.Snapshot()
+					if !useSnapshot {
-					reset := clearCache()
+						newSnapshot, _ := chunkList.Snapshot()
-					matcher.Reset(snapshot, input(reset), true, !reading, sort, reset)
+						// 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 {
+							snapshot = newSnapshot
+							snapshotRevision = inputRevision
+						}
+					}
+					matcher.Reset(snapshot, input(), true, !reading, sort, snapshotRevision)
 					delay = false
 
 				case EvtSearchProgress:
@@ -338,7 +362,7 @@ func Run(opts *Options, version string, revision string) {
 								determine(val.final)
 							}
 						}
-						terminal.UpdateList(val, clearSelection())
+						terminal.UpdateList(val)
 					}
 				}
 			}

src/matcher.go

@@ -16,7 +16,7 @@ type MatchRequest struct {
 	pattern  *Pattern
 	final    bool
 	sort     bool
-	clearCache bool
+	revision int
 }
 
 // Matcher is responsible for performing search
@@ -29,6 +29,7 @@ type Matcher struct {
 	partitions     int
 	slab           []*util.Slab
 	mergerCache    map[string]*Merger
+	revision       int
 }
 
 const (
@@ -38,7 +39,7 @@ const (
 
 // NewMatcher returns a new Matcher
 func NewMatcher(patternBuilder func([]rune) *Pattern,
-	sort bool, tac bool, eventBox *util.EventBox) *Matcher {
+	sort bool, tac bool, eventBox *util.EventBox, revision int) *Matcher {
 	partitions := util.Min(numPartitionsMultiplier*runtime.NumCPU(), maxPartitions)
 	return &Matcher{
 		patternBuilder: patternBuilder,
@@ -48,7 +49,8 @@ func NewMatcher(patternBuilder func([]rune) *Pattern,
 		reqBox:         util.NewEventBox(),
 		partitions:     partitions,
 		slab:           make([]*util.Slab, partitions),
-		mergerCache:    make(map[string]*Merger)}
+		mergerCache:    make(map[string]*Merger),
+		revision:       revision}
 }
 
 // Loop puts Matcher in action
@@ -70,8 +72,9 @@ func (m *Matcher) Loop() {
 			events.Clear()
 		})
 
-		if request.sort != m.sort || request.clearCache {
+		if request.sort != m.sort || request.revision != m.revision {
 			m.sort = request.sort
+			m.revision = request.revision
 			m.mergerCache = make(map[string]*Merger)
 			clearChunkCache()
 		}
@@ -140,11 +143,11 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 
 	numChunks := len(request.chunks)
 	if numChunks == 0 {
-		return EmptyMerger, false
+		return EmptyMerger(request.revision), false
 	}
 	pattern := request.pattern
 	if pattern.IsEmpty() {
-		return PassMerger(&request.chunks, m.tac), false
+		return PassMerger(&request.chunks, m.tac, request.revision), false
 	}
 
 	cancelled := util.NewAtomicBool(false)
@@ -218,11 +221,11 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 		partialResult := <-resultChan
 		partialResults[partialResult.index] = partialResult.matches
 	}
-	return NewMerger(pattern, partialResults, m.sort, m.tac), false
+	return NewMerger(pattern, partialResults, m.sort, m.tac, request.revision), false
 }
 
 // Reset is called to interrupt/signal the ongoing search
-func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final bool, sort bool, clearCache bool) {
+func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final bool, sort bool, revision int) {
 	pattern := m.patternBuilder(patternRunes)
 
 	var event util.EventType
@@ -231,5 +234,5 @@ func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final
 	} else {
 		event = reqRetry
 	}
-	m.reqBox.Set(event, MatchRequest{chunks, pattern, final, sort && pattern.sortable, clearCache})
+	m.reqBox.Set(event, MatchRequest{chunks, pattern, final, sort && pattern.sortable, revision})
 }

src/merger.go

@@ -3,7 +3,9 @@ package fzf
 import "fmt"
 
 // EmptyMerger is a Merger with no data
-var EmptyMerger = NewMerger(nil, [][]Result{}, false, false)
+func EmptyMerger(revision int) *Merger {
+	return NewMerger(nil, [][]Result{}, false, false, revision)
+}
 
 // Merger holds a set of locally sorted lists of items and provides the view of
 // a single, globally-sorted list
@@ -17,16 +19,20 @@ type Merger struct {
 	tac      bool
 	final    bool
 	count    int
+	pass     bool
+	revision int
 }
 
 // PassMerger returns a new Merger that simply returns the items in the
 // original order
-func PassMerger(chunks *[]*Chunk, tac bool) *Merger {
+func PassMerger(chunks *[]*Chunk, tac bool, revision int) *Merger {
 	mg := Merger{
 		pattern:  nil,
 		chunks:   chunks,
 		tac:      tac,
-		count:   0}
+		count:    0,
+		pass:     true,
+		revision: revision}
 
 	for _, chunk := range *mg.chunks {
 		mg.count += chunk.count
@@ -35,7 +41,7 @@ func PassMerger(chunks *[]*Chunk, tac bool) *Merger {
 }
 
 // NewMerger returns a new Merger
-func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool) *Merger {
+func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool, revision int) *Merger {
 	mg := Merger{
 		pattern:  pattern,
 		lists:    lists,
@@ -45,7 +51,8 @@ func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool) *Merge
 		sorted:   sorted,
 		tac:      tac,
 		final:    false,
-		count:   0}
+		count:    0,
+		revision: revision}
 
 	for _, list := range mg.lists {
 		mg.count += len(list)
@@ -53,11 +60,42 @@ func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool) *Merge
 	return &mg
 }
 
+// Revision returns revision number
+func (mg *Merger) Revision() int {
+	return mg.revision
+}
+
 // Length returns the number of items
 func (mg *Merger) Length() int {
 	return mg.count
 }
 
+func (mg *Merger) First() Result {
+	if mg.tac && !mg.sorted {
+		return mg.Get(mg.count - 1)
+	}
+	return mg.Get(0)
+}
+
+// FindIndex returns the index of the item with the given item index
+func (mg *Merger) FindIndex(itemIndex int32) int {
+	index := -1
+	if mg.pass {
+		index = int(itemIndex)
+		if mg.tac {
+			index = mg.count - index - 1
+		}
+	} else {
+		for i := 0; i < mg.count; i++ {
+			if mg.Get(i).item.Index() == itemIndex {
+				index = i
+				break
+			}
+		}
+	}
+	return index
+}
+
 // Get returns the pointer to the Result object indexed by the given integer
 func (mg *Merger) Get(idx int) Result {
 	if mg.chunks != nil {

src/merger_test.go

@@ -23,10 +23,10 @@ func randResult() Result {
 }
 
 func TestEmptyMerger(t *testing.T) {
-	assert(t, EmptyMerger.Length() == 0, "Not empty")
+	assert(t, EmptyMerger(0).Length() == 0, "Not empty")
-	assert(t, EmptyMerger.count == 0, "Invalid count")
+	assert(t, EmptyMerger(0).count == 0, "Invalid count")
-	assert(t, len(EmptyMerger.lists) == 0, "Invalid lists")
+	assert(t, len(EmptyMerger(0).lists) == 0, "Invalid lists")
-	assert(t, len(EmptyMerger.merged) == 0, "Invalid merged list")
+	assert(t, len(EmptyMerger(0).merged) == 0, "Invalid merged list")
 }
 
 func buildLists(partiallySorted bool) ([][]Result, []Result) {
@@ -57,7 +57,7 @@ func TestMergerUnsorted(t *testing.T) {
 	cnt := len(items)
 
 	// Not sorted: same order
-	mg := NewMerger(nil, lists, false, false)
+	mg := NewMerger(nil, lists, false, false, 0)
 	assert(t, cnt == mg.Length(), "Invalid Length")
 	for i := 0; i < cnt; i++ {
 		assert(t, items[i] == mg.Get(i), "Invalid Get")
@@ -69,7 +69,7 @@ func TestMergerSorted(t *testing.T) {
 	cnt := len(items)
 
 	// Sorted sorted order
-	mg := NewMerger(nil, lists, true, false)
+	mg := NewMerger(nil, lists, true, false, 0)
 	assert(t, cnt == mg.Length(), "Invalid Length")
 	sort.Sort(ByRelevance(items))
 	for i := 0; i < cnt; i++ {
@@ -79,7 +79,7 @@ func TestMergerSorted(t *testing.T) {
 	}
 
 	// Inverse order
-	mg2 := NewMerger(nil, lists, true, false)
+	mg2 := NewMerger(nil, lists, true, false, 0)
 	for i := cnt - 1; i >= 0; i-- {
 		if items[i] != mg2.Get(i) {
 			t.Error("Not sorted", items[i], mg2.Get(i))

src/options.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/junegunn/fzf/src/algo"
 	"github.com/junegunn/fzf/src/tui"
+	"github.com/junegunn/fzf/src/util"
 
 	"github.com/mattn/go-runewidth"
 	"github.com/mattn/go-shellwords"
@@ -32,6 +33,7 @@ const usage = `usage: fzf [options]
                            field index expressions
     -d, --delimiter=STR    Field delimiter regex (default: AWK-style)
     +s, --no-sort          Do not sort the result
+    --track                Track the current selection when the result is updated
     --tac                  Reverse the order of the input
     --disabled             Do not perform search
     --tiebreak=CRI[,..]    Comma-separated list of sort criteria to apply
@@ -61,7 +63,7 @@ const usage = `usage: fzf [options]
                            (default: 10)
     --layout=LAYOUT        Choose layout: [default|reverse|reverse-list]
     --border[=STYLE]       Draw border around the finder
-                           [rounded|sharp|horizontal|vertical|
+                           [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
                             top|bottom|left|right|none] (default: rounded)
     --border-label=LABEL   Label to print on the border
     --border-label-pos=COL Position of the border label
@@ -70,9 +72,12 @@ const usage = `usage: fzf [options]
                            (default: 0 or center)
     --margin=MARGIN        Screen margin (TRBL | TB,RL | T,RL,B | T,R,B,L)
     --padding=PADDING      Padding inside border (TRBL | TB,RL | T,RL,B | T,R,B,L)
-    --info=STYLE           Finder info style [default|inline|hidden]
+    --info=STYLE           Finder info style
+                           [default|right|hidden|inline[:SEPARATOR]|inline-right]
     --separator=STR        String to form horizontal separator on info line
     --no-separator         Hide info line separator
+    --scrollbar[=C1[C2]]   Scrollbar character(s) (each for main and preview window)
+    --no-scrollbar         Hide scrollbar
     --prompt=STR           Input prompt (default: '> ')
     --pointer=STR          Pointer to the current line (default: '>')
     --marker=STR           Multi-select marker (default: '>')
@@ -113,6 +118,7 @@ const usage = `usage: fzf [options]
     --read0                Read input delimited by ASCII NUL characters
     --print0               Print output delimited by ASCII NUL characters
     --sync                 Synchronous search for multi-staged filtering
+    --listen[=HTTP_PORT]   Start HTTP server to receive actions (POST /)
     --version              Display version information and exit
 
   Environment variables
@@ -122,6 +128,8 @@ const usage = `usage: fzf [options]
 
 `
 
+const defaultInfoSep = " < "
+
 // Case denotes case-sensitivity of search
 type Case int
 
@@ -158,6 +166,14 @@ func defaultMargin() [4]sizeSpec {
 	return [4]sizeSpec{}
 }
 
+type trackOption int
+
+const (
+	trackDisabled trackOption = iota
+	trackEnabled
+	trackCurrent
+)
+
 type windowPosition int
 
 const (
@@ -179,10 +195,16 @@ type infoStyle int
 
 const (
 	infoDefault infoStyle = iota
+	infoRight
 	infoInline
+	infoInlineRight
 	infoHidden
 )
 
+func (s infoStyle) noExtraLine() bool {
+	return s == infoInline || s == infoInlineRight || s == infoHidden
+}
+
 type labelOpts struct {
 	label  string
 	column int
@@ -204,6 +226,14 @@ type previewOpts struct {
 	alternative *previewOpts
 }
 
+func (o *previewOpts) Visible() bool {
+	return o.size.size > 0 || o.alternative != nil && o.alternative.size.size > 0
+}
+
+func (o *previewOpts) Toggle() {
+	o.hidden = !o.hidden
+}
+
 func parseLabelPosition(opts *labelOpts, arg string) {
 	opts.column = 0
 	opts.bottom = false
@@ -235,6 +265,10 @@ func (a previewOpts) sameContentLayout(b previewOpts) bool {
 	return a.wrap == b.wrap && a.headerLines == b.headerLines
 }
 
+func firstLine(s string) string {
+	return strings.SplitN(s, "\n", 2)[0]
+}
+
 // Options stores the values of command-line options
 type Options struct {
 	Fuzzy        bool
@@ -248,6 +282,7 @@ type Options struct {
 	WithNth      []Range
 	Delimiter    Delimiter
 	Sort         int
+	Track        trackOption
 	Tac          bool
 	Criteria     []criterion
 	Multi        int
@@ -266,6 +301,7 @@ type Options struct {
 	ScrollOff    int
 	FileWord     bool
 	InfoStyle    infoStyle
+	InfoSep      string
 	Separator    *string
 	JumpLabels   string
 	Prompt       string
@@ -289,6 +325,7 @@ type Options struct {
 	HeaderLines  int
 	HeaderFirst  bool
 	Ellipsis     string
+	Scrollbar    *string
 	Margin       [4]sizeSpec
 	Padding      [4]sizeSpec
 	BorderShape  tui.BorderShape
@@ -296,12 +333,13 @@ type Options struct {
 	PreviewLabel labelOpts
 	Unicode      bool
 	Tabstop      int
+	ListenPort   *int
 	ClearOnExit  bool
 	Version      bool
 }
 
 func defaultPreviewOpts(command string) previewOpts {
-	return previewOpts{command, posRight, sizeSpec{50, true}, "", false, false, false, false, tui.BorderRounded, 0, 0, nil}
+	return previewOpts{command, posRight, sizeSpec{50, true}, "", false, false, false, false, tui.DefaultBorderShape, 0, 0, nil}
 }
 
 func defaultOptions() *Options {
@@ -317,6 +355,7 @@ func defaultOptions() *Options {
 		WithNth:      make([]Range, 0),
 		Delimiter:    Delimiter{},
 		Sort:         1000,
+		Track:        trackDisabled,
 		Tac:          false,
 		Criteria:     []criterion{byScore, byLength},
 		Multi:        0,
@@ -357,6 +396,7 @@ func defaultOptions() *Options {
 		HeaderLines:  0,
 		HeaderFirst:  false,
 		Ellipsis:     "..",
+		Scrollbar:    nil,
 		Margin:       defaultMargin(),
 		Padding:      defaultMargin(),
 		Unicode:      true,
@@ -511,6 +551,10 @@ func parseBorder(str string, optional bool) tui.BorderShape {
 		return tui.BorderSharp
 	case "bold":
 		return tui.BorderBold
+	case "block":
+		return tui.BorderBlock
+	case "thinblock":
+		return tui.BorderThinBlock
 	case "double":
 		return tui.BorderDouble
 	case "horizontal":
@@ -529,16 +573,21 @@ func parseBorder(str string, optional bool) tui.BorderShape {
 		return tui.BorderNone
 	default:
 		if optional && str == "" {
-			return tui.BorderRounded
+			return tui.DefaultBorderShape
 		}
-		errorExit("invalid border style (expected: rounded|sharp|bold|double|horizontal|vertical|top|bottom|left|right|none)")
+		errorExit("invalid border style (expected: rounded|sharp|bold|block|thinblock|double|horizontal|vertical|top|bottom|left|right|none)")
 	}
 	return tui.BorderNone
 }
 
 func parseKeyChords(str string, message string) map[tui.Event]string {
+	return parseKeyChordsImpl(str, message, errorExit)
+}
+
+func parseKeyChordsImpl(str string, message string, exit func(string)) map[tui.Event]string {
 	if len(str) == 0 {
-		errorExit(message)
+		exit(message)
+		return nil
 	}
 
 	str = regexp.MustCompile("(?i)(alt-),").ReplaceAllString(str, "$1"+string([]rune{escapedComma}))
@@ -574,6 +623,8 @@ func parseKeyChords(str string, message string) map[tui.Event]string {
 			add(tui.BSpace)
 		case "ctrl-space":
 			add(tui.CtrlSpace)
+		case "ctrl-delete":
+			add(tui.CtrlDelete)
 		case "ctrl-^", "ctrl-6":
 			add(tui.CtrlCaret)
 		case "ctrl-/", "ctrl-_":
@@ -588,6 +639,14 @@ func parseKeyChords(str string, message string) map[tui.Event]string {
 			add(tui.BackwardEOF)
 		case "start":
 			add(tui.Start)
+		case "load":
+			add(tui.Load)
+		case "focus":
+			add(tui.Focus)
+		case "one":
+			add(tui.One)
+		case "zero":
+			add(tui.Zero)
 		case "alt-enter", "alt-return":
 			chords[tui.CtrlAltKey('m')] = key
 		case "alt-space":
@@ -636,6 +695,8 @@ func parseKeyChords(str string, message string) map[tui.Event]string {
 			add(tui.SLeft)
 		case "shift-right":
 			add(tui.SRight)
+		case "shift-delete":
+			add(tui.SDelete)
 		case "left-click":
 			add(tui.LeftClick)
 		case "right-click":
@@ -670,7 +731,8 @@ func parseKeyChords(str string, message string) map[tui.Event]string {
 			} else if len(runes) == 1 {
 				chords[tui.Key(runes[0])] = key
 			} else {
-				errorExit("unsupported key: " + key)
+				exit("unsupported key: " + key)
+				return nil
 			}
 		}
 	}
@@ -841,10 +903,18 @@ func parseTheme(defaultTheme *tui.ColorTheme, str string) *tui.ColorTheme {
 				mergeAttr(&theme.CurrentMatch)
 			case "border":
 				mergeAttr(&theme.Border)
+			case "preview-border":
+				mergeAttr(&theme.PreviewBorder)
 			case "separator":
 				mergeAttr(&theme.Separator)
+			case "scrollbar":
+				mergeAttr(&theme.Scrollbar)
+			case "preview-scrollbar":
+				mergeAttr(&theme.PreviewScrollbar)
 			case "label":
 				mergeAttr(&theme.BorderLabel)
+			case "preview-label":
+				mergeAttr(&theme.PreviewLabel)
 			case "prompt":
 				mergeAttr(&theme.Prompt)
 			case "spinner":
@@ -868,6 +938,7 @@ func parseTheme(defaultTheme *tui.ColorTheme, str string) *tui.ColorTheme {
 var (
 	executeRegexp    *regexp.Regexp
 	splitRegexp      *regexp.Regexp
+	actionNameRegexp *regexp.Regexp
 )
 
 func firstKey(keymap map[tui.Event]string) tui.Event {
@@ -884,79 +955,88 @@ const (
 )
 
 func init() {
-	// Backreferences are not supported.
-	// "~!@#$%^&*;/|".each_char.map { |c| Regexp.escape(c) }.map { |c| "#{c}[^#{c}]*#{c}" }.join('|')
 	executeRegexp = regexp.MustCompile(
-		`(?si)[:+](execute(?:-multi|-silent)?|reload|preview|change-prompt|change-preview-window|change-preview|(?:re|un)bind):.+|[:+](execute(?:-multi|-silent)?|reload|preview|change-prompt|change-preview-window|change-preview|(?:re|un)bind)(\([^)]*\)|\[[^\]]*\]|~[^~]*~|![^!]*!|@[^@]*@|\#[^\#]*\#|\$[^\$]*\$|%[^%]*%|\^[^\^]*\^|&[^&]*&|\*[^\*]*\*|;[^;]*;|/[^/]*/|\|[^\|]*\|)`)
+		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:header|query|prompt|border-label|preview-label)|change-preview-window|change-preview|(?:re|un)bind|pos|put)`)
 	splitRegexp = regexp.MustCompile("[,:]+")
+	actionNameRegexp = regexp.MustCompile("(?i)^[a-z-]+")
 }
 
-func parseKeymap(keymap map[tui.Event][]*action, str string) {
+func maskActionContents(action string) string {
-	masked := executeRegexp.ReplaceAllStringFunc(str, func(src string) string {
+	masked := ""
-		symbol := ":"
+Loop:
-		if strings.HasPrefix(src, "+") {
+	for len(action) > 0 {
-			symbol = "+"
+		loc := executeRegexp.FindStringIndex(action)
+		if loc == nil {
+			masked += action
+			break
 		}
-		prefix := symbol + "execute"
+		masked += action[:loc[1]]
-		if strings.HasPrefix(src[1:], "reload") {
+		action = action[loc[1]:]
-			prefix = symbol + "reload"
+		if len(action) == 0 {
-		} else if strings.HasPrefix(src[1:], "change-preview-window") {
+			break
-			prefix = symbol + "change-preview-window"
-		} else if strings.HasPrefix(src[1:], "change-preview") {
-			prefix = symbol + "change-preview"
-		} else if strings.HasPrefix(src[1:], "preview") {
-			prefix = symbol + "preview"
-		} else if strings.HasPrefix(src[1:], "unbind") {
-			prefix = symbol + "unbind"
-		} else if strings.HasPrefix(src[1:], "rebind") {
-			prefix = symbol + "rebind"
-		} else if strings.HasPrefix(src[1:], "change-prompt") {
-			prefix = symbol + "change-prompt"
-		} else if src[len(prefix)] == '-' {
-			c := src[len(prefix)+1]
-			if c == 's' || c == 'S' {
-				prefix += "-silent"
-			} else {
-				prefix += "-multi"
 		}
+		cs := string(action[0])
+		ce := ")"
+		switch action[0] {
+		case ':':
+			masked += strings.Repeat(" ", len(action))
+			break Loop
+		case '(':
+			ce = ")"
+		case '{':
+			ce = "}"
+		case '[':
+			ce = "]"
+		case '<':
+			ce = ">"
+		case '~', '!', '@', '#', '$', '%', '^', '&', '*', ';', '/', '|':
+			ce = string(cs)
+		default:
+			continue
+		}
+		cs = regexp.QuoteMeta(cs)
+		ce = regexp.QuoteMeta(ce)
+
+		// @$ or @+
+		loc = regexp.MustCompile(fmt.Sprintf(`(?s)^%s.*?(%s[+,]|%s$)`, cs, ce, ce)).FindStringIndex(action)
+		if loc == nil {
+			masked += action
+			break
+		}
+		// Keep + or , at the end
+		lastChar := action[loc[1]-1]
+		if lastChar == '+' || lastChar == ',' {
+			loc[1]--
+		}
+		masked += strings.Repeat(" ", loc[1])
+		action = action[loc[1]:]
 	}
-		return prefix + "(" + strings.Repeat(" ", len(src)-len(prefix)-2) + ")"
-	})
 	masked = strings.Replace(masked, "::", string([]rune{escapedColon, ':'}), -1)
 	masked = strings.Replace(masked, ",:", string([]rune{escapedComma, ':'}), -1)
 	masked = strings.Replace(masked, "+:", string([]rune{escapedPlus, ':'}), -1)
+	return masked
+}
 
+func parseSingleActionList(str string, exit func(string)) []*action {
+	// We prepend a colon to satisfy executeRegexp and remove it later
+	masked := maskActionContents(":" + str)[1:]
+	return parseActionList(masked, str, []*action{}, false, exit)
+}
+
+func parseActionList(masked string, original string, prevActions []*action, putAllowed bool, exit func(string)) []*action {
+	maskedStrings := strings.Split(masked, "+")
+	originalStrings := make([]string, len(maskedStrings))
 	idx := 0
-	for _, pairStr := range strings.Split(masked, ",") {
+	for i, maskedString := range maskedStrings {
-		origPairStr := str[idx : idx+len(pairStr)]
+		originalStrings[i] = original[idx : idx+len(maskedString)]
-		idx += len(pairStr) + 1
+		idx += len(maskedString) + 1
-
-		pair := strings.SplitN(pairStr, ":", 2)
-		if len(pair) < 2 {
-			errorExit("bind action not specified: " + origPairStr)
 	}
-		var key tui.Event
+	actions := make([]*action, 0, len(maskedStrings))
-		if len(pair[0]) == 1 && pair[0][0] == escapedColon {
-			key = tui.Key(':')
-		} else if len(pair[0]) == 1 && pair[0][0] == escapedComma {
-			key = tui.Key(',')
-		} else if len(pair[0]) == 1 && pair[0][0] == escapedPlus {
-			key = tui.Key('+')
-		} else {
-			keys := parseKeyChords(pair[0], "key name required")
-			key = firstKey(keys)
-		}
-
-		idx2 := len(pair[0]) + 1
-		specs := strings.Split(pair[1], "+")
-		actions := make([]*action, 0, len(specs))
 	appendAction := func(types ...actionType) {
 		actions = append(actions, toActions(types...)...)
 	}
 	prevSpec := ""
-		for specIndex, maskedSpec := range specs {
+	for specIndex, spec := range originalStrings {
-			spec := origPairStr[idx2 : idx2+len(maskedSpec)]
-			idx2 += len(maskedSpec) + 1
 		spec = prevSpec + spec
 		specLower := strings.ToLower(spec)
 		switch specLower {
@@ -1032,6 +1112,10 @@ func parseKeymap(keymap map[tui.Event][]*action, str string) {
 			appendAction(actToggleAll)
 		case "toggle-search":
 			appendAction(actToggleSearch)
+		case "toggle-track":
+			appendAction(actToggleTrack)
+		case "track":
+			appendAction(actTrack)
 		case "select":
 			appendAction(actSelect)
 		case "select-all":
@@ -1058,10 +1142,18 @@ func parseKeymap(keymap map[tui.Event][]*action, str string) {
 			appendAction(actHalfPageUp)
 		case "half-page-down":
 			appendAction(actHalfPageDown)
-			case "previous-history":
+		case "prev-history", "previous-history":
-				appendAction(actPreviousHistory)
+			appendAction(actPrevHistory)
 		case "next-history":
 			appendAction(actNextHistory)
+		case "prev-selected":
+			appendAction(actPrevSelected)
+		case "next-selected":
+			appendAction(actNextSelected)
+		case "show-preview":
+			appendAction(actShowPreview)
+		case "hide-preview":
+			appendAction(actHidePreview)
 		case "toggle-preview":
 			appendAction(actTogglePreview)
 		case "toggle-preview-wrap":
@@ -1089,46 +1181,24 @@ func parseKeymap(keymap map[tui.Event][]*action, str string) {
 		case "disable-search":
 			appendAction(actDisableSearch)
 		case "put":
-				if key.Type == tui.Rune && unicode.IsGraphic(key.Char) {
+			if putAllowed {
 				appendAction(actRune)
 			} else {
-					errorExit("unable to put non-printable character: " + pair[0])
+				exit("unable to put non-printable character")
 			}
 		default:
 			t := isExecuteAction(specLower)
 			if t == actIgnore {
 				if specIndex == 0 && specLower == "" {
-						actions = append(keymap[key], actions...)
+					actions = append(prevActions, actions...)
 				} else {
-						errorExit("unknown action: " + spec)
+					exit("unknown action: " + spec)
 				}
 			} else {
-					var offset int
+				offset := len(actionNameRegexp.FindString(spec))
-					switch t {
-					case actReload:
-						offset = len("reload")
-					case actPreview:
-						offset = len("preview")
-					case actChangePreviewWindow:
-						offset = len("change-preview-window")
-					case actChangePreview:
-						offset = len("change-preview")
-					case actChangePrompt:
-						offset = len("change-prompt")
-					case actUnbind:
-						offset = len("unbind")
-					case actRebind:
-						offset = len("rebind")
-					case actExecuteSilent:
-						offset = len("execute-silent")
-					case actExecuteMulti:
-						offset = len("execute-multi")
-					default:
-						offset = len("execute")
-					}
 				var actionArg string
 				if spec[offset] == ':' {
-						if specIndex == len(specs)-1 {
+					if specIndex == len(originalStrings)-1 {
 						actionArg = spec[offset+1:]
 						actions = append(actions, &action{t: t, a: actionArg})
 					} else {
@@ -1139,47 +1209,109 @@ func parseKeymap(keymap map[tui.Event][]*action, str string) {
 					actionArg = spec[offset+1 : len(spec)-1]
 					actions = append(actions, &action{t: t, a: actionArg})
 				}
-					if t == actUnbind || t == actRebind {
+				switch t {
-						parseKeyChords(actionArg, spec[0:offset]+" target required")
+				case actBecome:
+					if util.IsWindows() {
+						exit("become action is not supported on Windows")
+					}
+				case actUnbind, actRebind:
+					parseKeyChordsImpl(actionArg, spec[0:offset]+" target required", exit)
+				case actChangePreviewWindow:
+					opts := previewOpts{}
+					for _, arg := range strings.Split(actionArg, "|") {
+						// Make sure that each expression is valid
+						parsePreviewWindowImpl(&opts, arg, exit)
+					}
 				}
 			}
 		}
 		prevSpec = ""
 	}
-		keymap[key] = actions
+	return actions
+}
+
+func parseKeymap(keymap map[tui.Event][]*action, str string, exit func(string)) {
+	masked := maskActionContents(str)
+	idx := 0
+	for _, pairStr := range strings.Split(masked, ",") {
+		origPairStr := str[idx : idx+len(pairStr)]
+		idx += len(pairStr) + 1
+
+		pair := strings.SplitN(pairStr, ":", 2)
+		if len(pair) < 2 {
+			exit("bind action not specified: " + origPairStr)
+		}
+		var key tui.Event
+		if len(pair[0]) == 1 && pair[0][0] == escapedColon {
+			key = tui.Key(':')
+		} else if len(pair[0]) == 1 && pair[0][0] == escapedComma {
+			key = tui.Key(',')
+		} else if len(pair[0]) == 1 && pair[0][0] == escapedPlus {
+			key = tui.Key('+')
+		} else {
+			keys := parseKeyChordsImpl(pair[0], "key name required", exit)
+			key = firstKey(keys)
+		}
+		putAllowed := key.Type == tui.Rune && unicode.IsGraphic(key.Char)
+		keymap[key] = parseActionList(pair[1], origPairStr[len(pair[0])+1:], keymap[key], putAllowed, exit)
 	}
 }
 
 func isExecuteAction(str string) actionType {
-	matches := executeRegexp.FindAllStringSubmatch(":"+str, -1)
+	masked := maskActionContents(":" + str)[1:]
-	if matches == nil || len(matches) != 1 {
+	if masked == str {
+		// Not masked
 		return actIgnore
 	}
-	prefix := matches[0][1]
+
-	if len(prefix) == 0 {
+	prefix := actionNameRegexp.FindString(str)
-		prefix = matches[0][2]
-	}
 	switch prefix {
+	case "become":
+		return actBecome
 	case "reload":
 		return actReload
+	case "reload-sync":
+		return actReloadSync
 	case "unbind":
 		return actUnbind
 	case "rebind":
 		return actRebind
 	case "preview":
 		return actPreview
+	case "change-border-label":
+		return actChangeBorderLabel
+	case "change-header":
+		return actChangeHeader
+	case "change-preview-label":
+		return actChangePreviewLabel
 	case "change-preview-window":
 		return actChangePreviewWindow
 	case "change-preview":
 		return actChangePreview
 	case "change-prompt":
 		return actChangePrompt
+	case "change-query":
+		return actChangeQuery
+	case "pos":
+		return actPosition
 	case "execute":
 		return actExecute
 	case "execute-silent":
 		return actExecuteSilent
 	case "execute-multi":
 		return actExecuteMulti
+	case "put":
+		return actPut
+	case "transform-border-label":
+		return actTransformBorderLabel
+	case "transform-preview-label":
+		return actTransformPreviewLabel
+	case "transform-header":
+		return actTransformHeader
+	case "transform-prompt":
+		return actTransformPrompt
+	case "transform-query":
+		return actTransformQuery
 	}
 	return actIgnore
 }
@@ -1247,21 +1379,33 @@ func parseLayout(str string) layoutType {
 	return layoutDefault
 }
 
-func parseInfoStyle(str string) infoStyle {
+func parseInfoStyle(str string) (infoStyle, string) {
 	switch str {
 	case "default":
-		return infoDefault
+		return infoDefault, ""
+	case "right":
+		return infoRight, ""
 	case "inline":
-		return infoInline
+		return infoInline, defaultInfoSep
+	case "inline-right":
+		return infoInlineRight, ""
 	case "hidden":
-		return infoHidden
+		return infoHidden, ""
 	default:
-		errorExit("invalid info style (expected: default|inline|hidden)")
+		prefix := "inline:"
+		if strings.HasPrefix(str, prefix) {
+			return infoInline, strings.ReplaceAll(str[len(prefix):], "\n", " ")
 		}
-	return infoDefault
+		errorExit("invalid info style (expected: default|right|hidden|inline[:SEPARATOR]|inline-right)")
+	}
+	return infoDefault, ""
 }
 
 func parsePreviewWindow(opts *previewOpts, input string) {
+	parsePreviewWindowImpl(opts, input, errorExit)
+}
+
+func parsePreviewWindowImpl(opts *previewOpts, input string, exit func(string)) {
 	tokenRegex := regexp.MustCompile(`[:,]*(<([1-9][0-9]*)\(([^)<]+)\)|[^,:]+)`)
 	sizeRegex := regexp.MustCompile("^[0-9]+%?$")
 	offsetRegex := regexp.MustCompile(`^(\+{-?[0-9]+})?([+-][0-9]+)*(-?/[1-9][0-9]*)?$`)
@@ -1305,6 +1449,10 @@ func parsePreviewWindow(opts *previewOpts, input string) {
 			opts.border = tui.BorderSharp
 		case "border-bold":
 			opts.border = tui.BorderBold
+		case "border-block":
+			opts.border = tui.BorderBlock
+		case "border-thinblock":
+			opts.border = tui.BorderThinBlock
 		case "border-double":
 			opts.border = tui.BorderDouble
 		case "noborder", "border-none":
@@ -1333,7 +1481,8 @@ func parsePreviewWindow(opts *previewOpts, input string) {
 			} else if offsetRegex.MatchString(token) {
 				opts.scroll = token
 			} else {
-				errorExit("invalid preview window option: " + token)
+				exit("invalid preview window option: " + token)
+				return
 			}
 		}
 	}
@@ -1342,7 +1491,7 @@ func parsePreviewWindow(opts *previewOpts, input string) {
 		opts.alternative = &alternativeOpts
 		opts.alternative.hidden = false
 		opts.alternative.alternative = nil
-		parsePreviewWindow(opts.alternative, alternative)
+		parsePreviewWindowImpl(opts.alternative, alternative, exit)
 	}
 }
 
@@ -1443,7 +1592,7 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--tiebreak":
 			opts.Criteria = parseTiebreak(nextString(allArgs, &i, "sort criterion required"))
 		case "--bind":
-			parseKeymap(opts.Keymap, nextString(allArgs, &i, "bind expression required"))
+			parseKeymap(opts.Keymap, nextString(allArgs, &i, "bind expression required"), errorExit)
 		case "--color":
 			_, spec := optionalNextString(allArgs, &i)
 			if len(spec) == 0 {
@@ -1463,6 +1612,10 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.Sort = optionalNumeric(allArgs, &i, 1)
 		case "+s", "--no-sort":
 			opts.Sort = 0
+		case "--track":
+			opts.Track = trackEnabled
+		case "--no-track":
+			opts.Track = trackDisabled
 		case "--tac":
 			opts.Tac = true
 		case "--no-tac":
@@ -1521,12 +1674,13 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--no-filepath-word":
 			opts.FileWord = false
 		case "--info":
-			opts.InfoStyle = parseInfoStyle(
+			opts.InfoStyle, opts.InfoSep = parseInfoStyle(
 				nextString(allArgs, &i, "info style required"))
 		case "--no-info":
 			opts.InfoStyle = infoHidden
 		case "--inline-info":
 			opts.InfoStyle = infoInline
+			opts.InfoSep = defaultInfoSep
 		case "--no-inline-info":
 			opts.InfoStyle = infoDefault
 		case "--separator":
@@ -1535,6 +1689,16 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--no-separator":
 			nosep := ""
 			opts.Separator = &nosep
+		case "--scrollbar":
+			given, bar := optionalNextString(allArgs, &i)
+			if given {
+				opts.Scrollbar = &bar
+			} else {
+				opts.Scrollbar = nil
+			}
+		case "--no-scrollbar":
+			noBar := ""
+			opts.Scrollbar = &noBar
 		case "--jump-labels":
 			opts.JumpLabels = nextString(allArgs, &i, "label characters required")
 			validateJumpLabels = true
@@ -1563,10 +1727,10 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--prompt":
 			opts.Prompt = nextString(allArgs, &i, "prompt string required")
 		case "--pointer":
-			opts.Pointer = nextString(allArgs, &i, "pointer sign string required")
+			opts.Pointer = firstLine(nextString(allArgs, &i, "pointer sign string required"))
 			validatePointer = true
 		case "--marker":
-			opts.Marker = nextString(allArgs, &i, "selected sign string required")
+			opts.Marker = firstLine(nextString(allArgs, &i, "selected sign string required"))
 			validateMarker = true
 		case "--sync":
 			opts.Sync = true
@@ -1645,6 +1809,11 @@ func parseOptions(opts *Options, allArgs []string) {
 				nextString(allArgs, &i, "padding required (TRBL / TB,RL / T,RL,B / T,R,B,L)"))
 		case "--tabstop":
 			opts.Tabstop = nextInt(allArgs, &i, "tab stop required")
+		case "--listen":
+			port := optionalNumeric(allArgs, &i, 0)
+			opts.ListenPort = &port
+		case "--no-listen":
+			opts.ListenPort = nil
 		case "--clear":
 			opts.ClearOnExit = true
 		case "--no-clear":
@@ -1677,10 +1846,10 @@ func parseOptions(opts *Options, allArgs []string) {
 			} else if match, value := optString(arg, "--prompt="); match {
 				opts.Prompt = value
 			} else if match, value := optString(arg, "--pointer="); match {
-				opts.Pointer = value
+				opts.Pointer = firstLine(value)
 				validatePointer = true
 			} else if match, value := optString(arg, "--marker="); match {
-				opts.Marker = value
+				opts.Marker = firstLine(value)
 				validateMarker = true
 			} else if match, value := optString(arg, "-n", "--nth="); match {
 				opts.Nth = splitNth(value)
@@ -1697,9 +1866,11 @@ func parseOptions(opts *Options, allArgs []string) {
 			} else if match, value := optString(arg, "--layout="); match {
 				opts.Layout = parseLayout(value)
 			} else if match, value := optString(arg, "--info="); match {
-				opts.InfoStyle = parseInfoStyle(value)
+				opts.InfoStyle, opts.InfoSep = parseInfoStyle(value)
 			} else if match, value := optString(arg, "--separator="); match {
 				opts.Separator = &value
+			} else if match, value := optString(arg, "--scrollbar="); match {
+				opts.Scrollbar = &value
 			} else if match, value := optString(arg, "--toggle-sort="); match {
 				parseToggleSort(opts.Keymap, value)
 			} else if match, value := optString(arg, "--expect="); match {
@@ -1711,7 +1882,7 @@ func parseOptions(opts *Options, allArgs []string) {
 			} else if match, value := optString(arg, "--color="); match {
 				opts.Theme = parseTheme(opts.Theme, value)
 			} else if match, value := optString(arg, "--bind="); match {
-				parseKeymap(opts.Keymap, value)
+				parseKeymap(opts.Keymap, value, errorExit)
 			} else if match, value := optString(arg, "--history="); match {
 				setHistory(value)
 			} else if match, value := optString(arg, "--history-size="); match {
@@ -1732,6 +1903,9 @@ func parseOptions(opts *Options, allArgs []string) {
 				opts.Padding = parseMargin("padding", value)
 			} else if match, value := optString(arg, "--tabstop="); match {
 				opts.Tabstop = atoi(value)
+			} else if match, value := optString(arg, "--listen="); match {
+				port := atoi(value)
+				opts.ListenPort = &port
 			} else if match, value := optString(arg, "--hscroll-off="); match {
 				opts.HscrollOff = atoi(value)
 			} else if match, value := optString(arg, "--scroll-off="); match {
@@ -1761,6 +1935,10 @@ func parseOptions(opts *Options, allArgs []string) {
 		errorExit("tab stop must be a positive integer")
 	}
 
+	if opts.ListenPort != nil && (*opts.ListenPort < 0 || *opts.ListenPort > 65535) {
+		errorExit("invalid listen port")
+	}
+
 	if len(opts.JumpLabels) == 0 {
 		errorExit("empty jump labels")
 	}
@@ -1800,10 +1978,23 @@ func postProcessOptions(opts *Options) {
 	if !opts.Version && !tui.IsLightRendererSupported() && opts.Height.size > 0 {
 		errorExit("--height option is currently not supported on this platform")
 	}
+
+	if opts.Scrollbar != nil {
+		runes := []rune(*opts.Scrollbar)
+		if len(runes) > 2 {
+			errorExit("--scrollbar should be given one or two characters")
+		}
+		for _, r := range runes {
+			if runewidth.RuneWidth(r) != 1 {
+				errorExit("scrollbar display width should be 1")
+			}
+		}
+	}
+
 	// Default actions for CTRL-N / CTRL-P when --history is set
 	if opts.History != nil {
 		if _, prs := opts.Keymap[tui.CtrlP.AsEvent()]; !prs {
-			opts.Keymap[tui.CtrlP.AsEvent()] = toActions(actPreviousHistory)
+			opts.Keymap[tui.CtrlP.AsEvent()] = toActions(actPrevHistory)
 		}
 		if _, prs := opts.Keymap[tui.CtrlN.AsEvent()]; !prs {
 			opts.Keymap[tui.CtrlN.AsEvent()] = toActions(actNextHistory)
@@ -1811,37 +2002,27 @@ func postProcessOptions(opts *Options) {
 	}
 
 	// Extend the default key map
-	previewEnabled := len(opts.Preview.command) > 0 || hasPreviewAction(opts)
 	keymap := defaultKeymap()
 	for key, actions := range opts.Keymap {
-		var lastChangePreviewWindow *action
+		reordered := []*action{}
 		for _, act := range actions {
 			switch act.t {
 			case actToggleSort:
 				// To display "+S"/"-S" on info line
 				opts.ToggleSort = true
-			case actChangePreviewWindow:
+			case actTogglePreview, actShowPreview, actHidePreview, actChangePreviewWindow:
-				lastChangePreviewWindow = act
+				reordered = append(reordered, act)
-				if !previewEnabled {
-					// Doesn't matter
-					continue
-				}
-				opts := previewOpts{}
-				for _, arg := range strings.Split(act.a, "|") {
-					// Make sure that each expression is valid
-					parsePreviewWindow(&opts, arg)
-				}
 			}
 		}
 
-		// Re-organize actions so that we only keep the last change-preview-window
+		// Re-organize actions so that we put actions that change the preview window first in the list.
-		// and it comes first in the list.
 		//  *  change-preview-window(up,+10)+preview(sleep 3; cat {})+change-preview-window(up,+20)
-		//  -> change-preview-window(up,+20)+preview(sleep 3; cat {})
+		//  -> change-preview-window(up,+10)+change-preview-window(up,+20)+preview(sleep 3; cat {})
-		if lastChangePreviewWindow != nil {
+		if len(reordered) > 0 {
-			reordered := []*action{lastChangePreviewWindow}
 			for _, act := range actions {
-				if act.t != actChangePreviewWindow {
+				switch act.t {
+				case actTogglePreview, actShowPreview, actHidePreview, actChangePreviewWindow:
+				default:
 					reordered = append(reordered, act)
 				}
 			}
@@ -1851,6 +2032,11 @@ func postProcessOptions(opts *Options) {
 	}
 	opts.Keymap = keymap
 
+	// If 'double-click' is left unbound, bind it to the action bound to 'enter'
+	if _, prs := opts.Keymap[tui.DoubleClick.AsEvent()]; !prs {
+		opts.Keymap[tui.DoubleClick.AsEvent()] = opts.Keymap[tui.CtrlM.AsEvent()]
+	}
+
 	if opts.Height.auto {
 		for _, s := range []sizeSpec{opts.Margin[0], opts.Margin[2]} {
 			if s.percent {
@@ -1879,9 +2065,7 @@ func postProcessOptions(opts *Options) {
 		theme := opts.Theme
 		boldify := func(c tui.ColorAttr) tui.ColorAttr {
 			dup := c
-			if !theme.Colored {
+			if (c.Attr & tui.AttrRegular) == 0 {
-				dup.Attr |= tui.Bold
-			} else if (c.Attr & tui.AttrRegular) == 0 {
 				dup.Attr |= tui.Bold
 			}
 			return dup

src/options_test.go

@@ -262,13 +262,17 @@ 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 {+})+select-all,f2:execute/echo {}, {}, {}/,f3:execute[echo '({})'],f4:execute;less {};,"+
+			"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")
+			",,:abort,::accept,+:execute:++\nfoobar,Y:execute(baz)+up", errorFn)
 	check(tui.CtrlA.AsEvent(), "", actKillLine)
 	check(tui.CtrlB.AsEvent(), "", actToggleSort, actUp, actDown)
 	check(tui.Key('c'), "", actPageUp)
@@ -286,12 +290,15 @@ 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))
+		parseKeymap(keymap, fmt.Sprintf("%d:execute%cfoobar%c", idx%10, char, char), errorFn)
 		check(tui.Key([]rune(fmt.Sprintf("%d", idx%10))[0]), "foobar", actExecute)
 	}
 
-	parseKeymap(keymap, "f1:abort")
+	parseKeymap(keymap, "f1:abort", errorFn)
 	check(tui.F1.AsEvent(), "", actAbort)
+	if len(errorString) > 0 {
+		t.Errorf("error parsing keymap: %s", errorString)
+	}
 }
 
 func TestColorSpec(t *testing.T) {
@@ -354,10 +361,10 @@ func TestDefaultCtrlNP(t *testing.T) {
 	f.Close()
 	hist := "--history=" + f.Name()
 	check([]string{hist}, tui.CtrlN, actNextHistory)
-	check([]string{hist}, tui.CtrlP, actPreviousHistory)
+	check([]string{hist}, tui.CtrlP, actPrevHistory)
 
 	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlN, actAccept)
-	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlP, actPreviousHistory)
+	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlP, actPrevHistory)
 
 	check([]string{hist, "--bind=ctrl-p:accept"}, tui.CtrlN, actNextHistory)
 	check([]string{hist, "--bind=ctrl-p:accept"}, tui.CtrlP, actAccept)
@@ -466,3 +473,38 @@ func TestValidateSign(t *testing.T) {
 		}
 	}
 }
+
+func TestParseSingleActionList(t *testing.T) {
+	actions := parseSingleActionList("Execute@foo+bar,baz@+up+up+reload:down+down", func(string) {})
+	if len(actions) != 4 {
+		t.Errorf("Invalid number of actions parsed:%d", len(actions))
+	}
+	if actions[0].t != actExecute || actions[0].a != "foo+bar,baz" {
+		t.Errorf("Invalid action parsed: %v", actions[0])
+	}
+	if actions[1].t != actUp || actions[2].t != actUp {
+		t.Errorf("Invalid action parsed: %v / %v", actions[1], actions[2])
+	}
+	if actions[3].t != actReload || actions[3].a != "down+down" {
+		t.Errorf("Invalid action parsed: %v", actions[3])
+	}
+}
+
+func TestParseSingleActionListError(t *testing.T) {
+	err := ""
+	parseSingleActionList("change-query(foobar)baz", func(e string) {
+		err = e
+	})
+	if len(err) == 0 {
+		t.Errorf("Failed to detect error")
+	}
+}
+
+func TestMaskActionContents(t *testing.T) {
+	original := ":execute((f)(o)(o)(b)(a)(r))+change-query@qu@ry@+up,x:reload:hello:world"
+	expected := ":execute                    +change-query       +up,x:reload            "
+	masked := maskActionContents(original)
+	if masked != expected {
+		t.Errorf("Not masked: %s", masked)
+	}
+}

src/result.go

@@ -50,20 +50,21 @@ func buildResult(item *Item, offsets []Offset, score int) Result {
 			// Higher is better
 			val = math.MaxUint16 - util.AsUint16(score)
 		case byChunk:
+			if validOffsetFound {
 				b := minBegin
 				e := maxEnd
-			l := item.text.Length()
 				for ; b >= 1; b-- {
 					if unicode.IsSpace(item.text.Get(b - 1)) {
 						break
 					}
 				}
-			for ; e < l; e++ {
+				for ; e < numChars; e++ {
 					if unicode.IsSpace(item.text.Get(e)) {
 						break
 					}
 				}
 				val = util.AsUint16(e - b)
+			}
 		case byLength:
 			val = item.TrimLength()
 		case byBegin, byEnd:

src/server.go

@@ -0,0 +1,138 @@
+package fzf
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	crlf             = "\r\n"
+	httpOk           = "HTTP/1.1 200 OK" + crlf
+	httpBadRequest   = "HTTP/1.1 400 Bad Request" + crlf
+	httpReadTimeout  = 10 * time.Second
+	maxContentLength = 1024 * 1024
+)
+
+func startHttpServer(port int, channel chan []*action) (error, int) {
+	if port < 0 {
+		return nil, port
+	}
+
+	listener, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", port))
+	if err != nil {
+		return fmt.Errorf("port not available: %d", port), port
+	}
+	if port == 0 {
+		addr := listener.Addr().String()
+		parts := strings.SplitN(addr, ":", 2)
+		if len(parts) < 2 {
+			return fmt.Errorf("cannot extract port: %s", addr), port
+		}
+		var err error
+		port, err = strconv.Atoi(parts[1])
+		if err != nil {
+			return err, port
+		}
+	}
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				if errors.Is(err, net.ErrClosed) {
+					break
+				} else {
+					continue
+				}
+			}
+			conn.Write([]byte(handleHttpRequest(conn, channel)))
+			conn.Close()
+		}
+		listener.Close()
+	}()
+
+	return nil, port
+}
+
+// Here we are writing a simplistic HTTP server without using net/http
+// package to reduce the size of the binary.
+//
+// * No --listen:            2.8MB
+// * --listen with net/http: 5.7MB
+// * --listen w/o net/http:  3.3MB
+func handleHttpRequest(conn net.Conn, channel chan []*action) string {
+	contentLength := 0
+	body := ""
+	bad := func(message string) string {
+		message += "\n"
+		return httpBadRequest + fmt.Sprintf("Content-Length: %d%s", len(message), crlf+crlf+message)
+	}
+	conn.SetReadDeadline(time.Now().Add(httpReadTimeout))
+	scanner := bufio.NewScanner(conn)
+	scanner.Split(func(data []byte, atEOF bool) (int, []byte, error) {
+		found := bytes.Index(data, []byte(crlf))
+		if found >= 0 {
+			token := data[:found+len(crlf)]
+			return len(token), token, nil
+		}
+		if atEOF || len(body)+len(data) >= contentLength {
+			return 0, data, bufio.ErrFinalToken
+		}
+		return 0, nil, nil
+	})
+
+	section := 0
+	for scanner.Scan() {
+		text := scanner.Text()
+		switch section {
+		case 0:
+			if !strings.HasPrefix(text, "POST / HTTP") {
+				return bad("invalid request method")
+			}
+			section++
+		case 1:
+			if text == crlf {
+				if contentLength == 0 {
+					return bad("content-length header missing")
+				}
+				section++
+				continue
+			}
+			pair := strings.SplitN(text, ":", 2)
+			if len(pair) == 2 && strings.ToLower(pair[0]) == "content-length" {
+				length, err := strconv.Atoi(strings.TrimSpace(pair[1]))
+				if err != nil || length <= 0 || length > maxContentLength {
+					return bad("invalid content length")
+				}
+				contentLength = length
+			}
+		case 2:
+			body += text
+		}
+	}
+
+	if len(body) < contentLength {
+		return bad("incomplete request")
+	}
+	body = body[:contentLength]
+
+	errorMessage := ""
+	actions := parseSingleActionList(strings.Trim(string(body), "\r\n"), func(message string) {
+		errorMessage = message
+	})
+	if len(errorMessage) > 0 {
+		return bad(errorMessage)
+	}
+	if len(actions) == 0 {
+		return bad("no action specified")
+	}
+
+	channel <- actions
+	return httpOk
+}

src/tui/dummy.go

@@ -8,6 +8,8 @@ func HasFullscreenRenderer() bool {
 	return false
 }
 
+var DefaultBorderShape BorderShape = BorderRounded
+
 func (a Attr) Merge(b Attr) Attr {
 	return a | b
 }
@@ -32,6 +34,7 @@ func (r *FullscreenRenderer) Resize(maxHeightFunc func(int) int) {}
 func (r *FullscreenRenderer) Pause(bool)                         {}
 func (r *FullscreenRenderer) Resume(bool, bool)                  {}
 func (r *FullscreenRenderer) Clear()                             {}
+func (r *FullscreenRenderer) NeedScrollbarRedraw() bool          { return false }
 func (r *FullscreenRenderer) Refresh()                           {}
 func (r *FullscreenRenderer) Close()                             {}
 

src/tui/light.go

@@ -32,20 +32,26 @@ var offsetRegexp *regexp.Regexp = regexp.MustCompile("(.*)\x1b\\[([0-9]+);([0-9]
 var offsetRegexpBegin *regexp.Regexp = regexp.MustCompile("^\x1b\\[[0-9]+;[0-9]+R")
 
 func (r *LightRenderer) stderr(str string) {
-	r.stderrInternal(str, true)
+	r.stderrInternal(str, true, "")
 }
 
-// FIXME: Need better handling of non-displayable characters
+const CR string = "\x1b[2m␍"
-func (r *LightRenderer) stderrInternal(str string, allowNLCR bool) {
+const LF string = "\x1b[2m␊"
+
+func (r *LightRenderer) stderrInternal(str string, allowNLCR bool, resetCode string) {
 	bytes := []byte(str)
 	runes := []rune{}
 	for len(bytes) > 0 {
 		r, sz := utf8.DecodeRune(bytes)
 		nlcr := r == '\n' || r == '\r'
 		if r >= 32 || r == '\x1b' || nlcr {
-			if r == utf8.RuneError || nlcr && !allowNLCR {
+			if nlcr && !allowNLCR {
-				runes = append(runes, ' ')
+				if r == '\r' {
+					runes = append(runes, []rune(CR+resetCode)...)
 				} else {
+					runes = append(runes, []rune(LF+resetCode)...)
+				}
+			} else if r != utf8.RuneError {
 				runes = append(runes, r)
 			}
 		}
@@ -54,8 +60,10 @@ func (r *LightRenderer) stderrInternal(str string, allowNLCR bool) {
 	r.queued.WriteString(string(runes))
 }
 
-func (r *LightRenderer) csi(code string) {
+func (r *LightRenderer) csi(code string) string {
-	r.stderr("\x1b[" + code)
+	fullcode := "\x1b[" + code
+	r.stderr(fullcode)
+	return fullcode
 }
 
 func (r *LightRenderer) flush() {
@@ -72,7 +80,7 @@ type LightRenderer struct {
 	forceBlack    bool
 	clearOnExit   bool
 	prevDownTime  time.Time
-	clickY        []int
+	clicks        [][2]int
 	ttyin         *os.File
 	buffer        []byte
 	origState     *term.State
@@ -174,10 +182,7 @@ func (r *LightRenderer) Init() {
 		}
 	}
 
-	if r.mouse {
+	r.enableMouse()
-		r.csi("?1000h")
-		r.csi("?1006h")
-	}
 	r.csi(fmt.Sprintf("%dA", r.MaxY()-1))
 	r.csi("G")
 	r.csi("K")
@@ -425,7 +430,19 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 				}
 				return Event{Invalid, 0, nil} // INS
 			case '3':
+				if r.buffer[3] == '~' {
 					return Event{Del, 0, nil}
+				}
+				if len(r.buffer) == 6 && r.buffer[5] == '~' {
+					*sz = 6
+					switch r.buffer[4] {
+					case '5':
+						return Event{CtrlDelete, 0, nil}
+					case '2':
+						return Event{SDelete, 0, nil}
+					}
+				}
+				return Event{Invalid, 0, nil}
 			case '4':
 				return Event{End, 0, nil}
 			case '5':
@@ -545,7 +562,7 @@ func (r *LightRenderer) mouseSequence(sz *int) Event {
 	t := atoi(elems[0], -1)
 	x := atoi(elems[1], -1) - 1
 	y := atoi(elems[2], -1) - 1 - r.yoffset
-	if t < 0 || x < 0 || y < 0 {
+	if t < 0 || x < 0 {
 		return Event{Invalid, 0, nil}
 	}
 	*sz += end + 1
@@ -569,25 +586,31 @@ func (r *LightRenderer) mouseSequence(sz *int) Event {
 	// ctrl := t & 0b1000
 	mod := t&0b1100 > 0
 
+	drag := t&0b100000 > 0
+
 	if scroll != 0 {
 		return Event{Mouse, 0, &MouseEvent{y, x, scroll, false, false, false, mod}}
 	}
 
 	double := false
-	if down {
+	if down && !drag {
 		now := time.Now()
 		if !left { // Right double click is not allowed
-			r.clickY = []int{}
+			r.clicks = [][2]int{}
 		} else if now.Sub(r.prevDownTime) < doubleClickDuration {
-			r.clickY = append(r.clickY, y)
+			r.clicks = append(r.clicks, [2]int{x, y})
 		} else {
-			r.clickY = []int{y}
+			r.clicks = [][2]int{{x, y}}
 		}
 		r.prevDownTime = now
 	} else {
-		if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
+		n := len(r.clicks)
+		if len(r.clicks) > 1 && r.clicks[n-2][0] == r.clicks[n-1][0] && r.clicks[n-2][1] == r.clicks[n-1][1] &&
 			time.Since(r.prevDownTime) < doubleClickDuration {
 			double = true
+			if double {
+				r.clicks = [][2]int{}
+			}
 		}
 	}
 	return Event{Mouse, 0, &MouseEvent{y, x, 0, left, down, double, mod}}
@@ -602,6 +625,7 @@ func (r *LightRenderer) rmcup() {
 }
 
 func (r *LightRenderer) Pause(clear bool) {
+	r.disableMouse()
 	r.restoreTerminal()
 	if clear {
 		if r.fullscreen {
@@ -614,6 +638,22 @@ func (r *LightRenderer) Pause(clear bool) {
 	}
 }
 
+func (r *LightRenderer) enableMouse() {
+	if r.mouse {
+		r.csi("?1000h")
+		r.csi("?1002h")
+		r.csi("?1006h")
+	}
+}
+
+func (r *LightRenderer) disableMouse() {
+	if r.mouse {
+		r.csi("?1000l")
+		r.csi("?1002l")
+		r.csi("?1006l")
+	}
+}
+
 func (r *LightRenderer) Resume(clear bool, sigcont bool) {
 	r.setupTerminal()
 	if clear {
@@ -622,13 +662,13 @@ func (r *LightRenderer) Resume(clear bool, sigcont bool) {
 		} else {
 			r.rmcup()
 		}
+		r.enableMouse()
 		r.flush()
 	} else if sigcont && !r.fullscreen && r.mouse {
 		// NOTE: SIGCONT (Coming back from CTRL-Z):
 		// It's highly likely that the offset we obtained at the beginning is
 		// no longer correct, so we simply disable mouse input.
-		r.csi("?1000l")
+		r.disableMouse()
-		r.csi("?1006l")
 		r.mouse = false
 	}
 }
@@ -643,6 +683,10 @@ func (r *LightRenderer) Clear() {
 	r.flush()
 }
 
+func (r *LightRenderer) NeedScrollbarRedraw() bool {
+	return false
+}
+
 func (r *LightRenderer) RefreshWindows(windows []Window) {
 	r.flush()
 }
@@ -666,10 +710,7 @@ func (r *LightRenderer) Close() {
 	} else if !r.fullscreen {
 		r.csi("u")
 	}
-	if r.mouse {
+	r.disableMouse()
-		r.csi("?1000l")
-		r.csi("?1006l")
-	}
 	r.flush()
 	r.closePlatform()
 	r.restoreTerminal()
@@ -706,25 +747,38 @@ func (r *LightRenderer) NewWindow(top int, left int, width int, height int, prev
 		w.fg = r.theme.Fg.Color
 		w.bg = r.theme.Bg.Color
 	}
-	w.drawBorder()
+	w.drawBorder(false)
 	return w
 }
 
-func (w *LightWindow) drawBorder() {
+func (w *LightWindow) DrawHBorder() {
+	w.drawBorder(true)
+}
+
+func (w *LightWindow) drawBorder(onlyHorizontal bool) {
 	switch w.border.shape {
-	case BorderRounded, BorderSharp, BorderBold, BorderDouble:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble:
-		w.drawBorderAround()
+		w.drawBorderAround(onlyHorizontal)
 	case BorderHorizontal:
 		w.drawBorderHorizontal(true, true)
 	case BorderVertical:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(true, true)
 	case BorderTop:
 		w.drawBorderHorizontal(true, false)
 	case BorderBottom:
 		w.drawBorderHorizontal(false, true)
 	case BorderLeft:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(true, false)
 	case BorderRight:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(false, true)
 	}
 }
@@ -734,13 +788,14 @@ func (w *LightWindow) drawBorderHorizontal(top, bottom bool) {
 	if w.preview {
 		color = ColPreviewBorder
 	}
+	hw := runewidth.RuneWidth(w.border.top)
 	if top {
 		w.Move(0, 0)
-		w.CPrint(color, repeat(w.border.horizontal, w.width))
+		w.CPrint(color, repeat(w.border.top, w.width/hw))
 	}
 	if bottom {
 		w.Move(w.height-1, 0)
-		w.CPrint(color, repeat(w.border.horizontal, w.width))
+		w.CPrint(color, repeat(w.border.bottom, w.width/hw))
 	}
 }
 
@@ -756,38 +811,46 @@ func (w *LightWindow) drawBorderVertical(left, right bool) {
 	for y := 0; y < w.height; y++ {
 		w.Move(y, 0)
 		if left {
-			w.CPrint(color, string(w.border.vertical))
+			w.CPrint(color, string(w.border.left))
 		}
 		w.CPrint(color, repeat(' ', width))
 		if right {
-			w.CPrint(color, string(w.border.vertical))
+			w.CPrint(color, string(w.border.right))
 		}
 	}
 }
 
-func (w *LightWindow) drawBorderAround() {
+func (w *LightWindow) drawBorderAround(onlyHorizontal bool) {
 	w.Move(0, 0)
 	color := ColBorder
 	if w.preview {
 		color = ColPreviewBorder
 	}
-	w.CPrint(color, string(w.border.topLeft)+repeat(w.border.horizontal, w.width-2)+string(w.border.topRight))
+	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)
+	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)
 		for y := 1; y < w.height-1; y++ {
 			w.Move(y, 0)
-		w.CPrint(color, string(w.border.vertical))
+			w.CPrint(color, string(w.border.left))
-		w.CPrint(color, repeat(' ', w.width-2))
+			w.CPrint(color, repeat(' ', w.width-vw*2))
-		w.CPrint(color, string(w.border.vertical))
+			w.CPrint(color, string(w.border.right))
+		}
 	}
 	w.Move(w.height-1, 0)
-	w.CPrint(color, string(w.border.bottomLeft)+repeat(w.border.horizontal, w.width-2)+string(w.border.bottomRight))
+	rem = (w.width - bcw) % hw
+	w.CPrint(color, string(w.border.bottomLeft)+repeat(w.border.bottom, (w.width-bcw)/hw)+repeat(' ', rem)+string(w.border.bottomRight))
 }
 
-func (w *LightWindow) csi(code string) {
+func (w *LightWindow) csi(code string) string {
-	w.renderer.csi(code)
+	return w.renderer.csi(code)
 }
 
-func (w *LightWindow) stderrInternal(str string, allowNLCR bool) {
+func (w *LightWindow) stderrInternal(str string, allowNLCR bool, resetCode string) {
-	w.renderer.stderrInternal(str, allowNLCR)
+	w.renderer.stderrInternal(str, allowNLCR, resetCode)
 }
 
 func (w *LightWindow) Top() int {
@@ -893,10 +956,10 @@ func colorCodes(fg Color, bg Color) []string {
 	return codes
 }
 
-func (w *LightWindow) csiColor(fg Color, bg Color, attr Attr) bool {
+func (w *LightWindow) csiColor(fg Color, bg Color, attr Attr) (bool, string) {
 	codes := append(attrCodes(attr), colorCodes(fg, bg)...)
-	w.csi(";" + strings.Join(codes, ";") + "m")
+	code := w.csi(";" + strings.Join(codes, ";") + "m")
-	return len(codes) > 0
+	return len(codes) > 0, code
 }
 
 func (w *LightWindow) Print(text string) {
@@ -908,16 +971,17 @@ func cleanse(str string) string {
 }
 
 func (w *LightWindow) CPrint(pair ColorPair, text string) {
-	w.csiColor(pair.Fg(), pair.Bg(), pair.Attr())
+	_, code := w.csiColor(pair.Fg(), pair.Bg(), pair.Attr())
-	w.stderrInternal(cleanse(text), false)
+	w.stderrInternal(cleanse(text), false, code)
 	w.csi("m")
 }
 
 func (w *LightWindow) cprint2(fg Color, bg Color, attr Attr, text string) {
-	if w.csiColor(fg, bg, attr) {
+	hasColors, code := w.csiColor(fg, bg, attr)
+	if hasColors {
 		defer w.csi("m")
 	}
-	w.stderrInternal(cleanse(text), false)
+	w.stderrInternal(cleanse(text), false, code)
 }
 
 type wrappedLine struct {
@@ -937,6 +1001,8 @@ func wrapLine(input string, prefixLength int, max int, tabstop int) []wrappedLin
 		if len(rs) == 1 && rs[0] == '\t' {
 			w = tabstop - (prefixLength+width)%tabstop
 			str = repeat(' ', w)
+		} else if rs[0] == '\r' {
+			w++
 		} else {
 			w = runewidth.StringWidth(str)
 		}
@@ -955,12 +1021,12 @@ func wrapLine(input string, prefixLength int, max int, tabstop int) []wrappedLin
 	return lines
 }
 
-func (w *LightWindow) fill(str string, onMove func()) FillReturn {
+func (w *LightWindow) fill(str string, resetCode string) FillReturn {
 	allLines := strings.Split(str, "\n")
 	for i, line := range allLines {
 		lines := wrapLine(line, w.posx, w.width, w.tabstop)
 		for j, wl := range lines {
-			w.stderrInternal(wl.text, false)
+			w.stderrInternal(wl.text, false, resetCode)
 			w.posx += wl.displayWidth
 
 			// Wrap line
@@ -970,7 +1036,7 @@ func (w *LightWindow) fill(str string, onMove func()) FillReturn {
 				}
 				w.MoveAndClear(w.posy, w.posx)
 				w.Move(w.posy+1, 0)
-				onMove()
+				w.renderer.stderr(resetCode)
 			}
 		}
 	}
@@ -979,22 +1045,26 @@ func (w *LightWindow) fill(str string, onMove func()) FillReturn {
 			return FillSuspend
 		}
 		w.Move(w.posy+1, 0)
-		onMove()
+		w.renderer.stderr(resetCode)
 		return FillNextLine
 	}
 	return FillContinue
 }
 
-func (w *LightWindow) setBg() {
+func (w *LightWindow) setBg() string {
 	if w.bg != colDefault {
-		w.csiColor(colDefault, w.bg, AttrRegular)
+		_, code := w.csiColor(colDefault, w.bg, AttrRegular)
+		return code
 	}
+	// Should clear dim attribute after ␍ in the preview window
+	// e.g. printf "foo\rbar" | fzf --ansi --preview 'printf "foo\rbar"'
+	return "\x1b[m"
 }
 
 func (w *LightWindow) Fill(text string) FillReturn {
 	w.Move(w.posy, w.posx)
-	w.setBg()
+	code := w.setBg()
-	return w.fill(text, w.setBg)
+	return w.fill(text, code)
 }
 
 func (w *LightWindow) CFill(fg Color, bg Color, attr Attr, text string) FillReturn {
@@ -1005,11 +1075,11 @@ func (w *LightWindow) CFill(fg Color, bg Color, attr Attr, text string) FillRetu
 	if bg == colDefault {
 		bg = w.bg
 	}
-	if w.csiColor(fg, bg, attr) {
+	if hasColors, resetCode := w.csiColor(fg, bg, attr); hasColors {
 		defer w.csi("m")
-		return w.fill(text, func() { w.csiColor(fg, bg, attr) })
+		return w.fill(text, resetCode)
 	}
-	return w.fill(text, w.setBg)
+	return w.fill(text, w.setBg())
 }
 
 func (w *LightWindow) FinishFill() {
@@ -1020,7 +1090,7 @@ func (w *LightWindow) FinishFill() {
 }
 
 func (w *LightWindow) Erase() {
-	w.drawBorder()
+	w.drawBorder(false)
 	// We don't erase the window here to avoid flickering during scroll
 	w.Move(0, 0)
 }

src/tui/tcell.go

@@ -6,10 +6,9 @@ import (
 	"os"
 	"time"
 
-	"runtime"
-
 	"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"
@@ -19,6 +18,8 @@ func HasFullscreenRenderer() bool {
 	return true
 }
 
+var DefaultBorderShape BorderShape = BorderSharp
+
 func asTcellColor(color Color) tcell.Color {
 	if color == colDefault {
 		return tcell.ColorDefault
@@ -189,6 +190,10 @@ func (r *FullscreenRenderer) Clear() {
 	_screen.Clear()
 }
 
+func (r *FullscreenRenderer) NeedScrollbarRedraw() bool {
+	return true
+}
+
 func (r *FullscreenRenderer) Refresh() {
 	// noop
 }
@@ -218,54 +223,38 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Mouse, 0, &MouseEvent{y, x, -1, false, false, false, mod}}
 		case button&tcell.WheelUp != 0:
 			return Event{Mouse, 0, &MouseEvent{y, x, +1, false, false, false, mod}}
-		case button&tcell.Button1 != 0 && !drag:
+		case button&tcell.Button1 != 0:
-			// all potential double click events put their 'line' coordinate in the clickY array
+			double := false
+			if !drag {
+				// all potential double click events put their coordinates in the clicks array
 				// double click event has two conditions, temporal and spatial, the first is checked here
 				now := time.Now()
 				if now.Sub(r.prevDownTime) < doubleClickDuration {
-				r.clickY = append(r.clickY, y)
+					r.clicks = append(r.clicks, [2]int{x, y})
 				} else {
-				r.clickY = []int{y}
+					r.clicks = [][2]int{{x, y}}
 				}
 				r.prevDownTime = now
 
 				// detect double clicks (also check for spatial condition)
-			n := len(r.clickY)
+				n := len(r.clicks)
-			double := n > 1 && r.clickY[n-2] == r.clickY[n-1]
+				double = n > 1 && r.clicks[n-2][0] == r.clicks[n-1][0] && r.clicks[n-2][1] == r.clicks[n-1][1]
 				if double {
 					// make sure two consecutive double clicks require four clicks
-				r.clickY = []int{}
+					r.clicks = [][2]int{}
+				}
 			}
-
 			// fire single or double click event
 			return Event{Mouse, 0, &MouseEvent{y, x, 0, true, !double, double, mod}}
-		case button&tcell.Button2 != 0 && !drag:
+		case button&tcell.Button2 != 0:
 			return Event{Mouse, 0, &MouseEvent{y, x, 0, false, true, false, mod}}
-		case runtime.GOOS != "windows":
+		default:
-
 			// double and single taps on Windows don't quite work due to
 			// the console acting on the events and not allowing us
 			// to consume them.
-
 			left := button&tcell.Button1 != 0
 			down := left || button&tcell.Button3 != 0
 			double := false
-			if down {
-				now := time.Now()
-				if !left {
-					r.clickY = []int{}
-				} else if now.Sub(r.prevDownTime) < doubleClickDuration {
-					r.clickY = append(r.clickY, x)
-				} else {
-					r.clickY = []int{x}
-					r.prevDownTime = now
-				}
-			} else {
-				if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
-					time.Now().Sub(r.prevDownTime) < doubleClickDuration {
-					double = true
-				}
-			}
 
 			return Event{Mouse, 0, &MouseEvent{y, x, 0, left, down, double, mod}}
 		}
@@ -424,6 +413,12 @@ func (r *FullscreenRenderer) GetChar() Event {
 		case tcell.KeyHome:
 			return Event{Home, 0, nil}
 		case tcell.KeyDelete:
+			if ctrl {
+				return Event{CtrlDelete, 0, nil}
+			}
+			if shift {
+				return Event{SDelete, 0, nil}
+			}
 			return Event{Del, 0, nil}
 		case tcell.KeyEnd:
 			return Event{End, 0, nil}
@@ -524,7 +519,7 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 		height:      height,
 		normal:      normal,
 		borderStyle: borderStyle}
-	w.drawBorder()
+	w.drawBorder(false)
 	return w
 }
 
@@ -541,7 +536,7 @@ func fill(x, y, w, h int, n ColorPair, r rune) {
 }
 
 func (w *TcellWindow) Erase() {
-	fill(w.left-1, w.top, w.width+1, w.height, w.normal, ' ')
+	fill(w.left-1, w.top, w.width+1, w.height-1, w.normal, ' ')
 }
 
 func (w *TcellWindow) Enclose(y int, x int) bool {
@@ -584,26 +579,27 @@ func (w *TcellWindow) printString(text string, pair ColorPair) {
 
 	gr := uniseg.NewGraphemes(text)
 	for gr.Next() {
+		st := style
 		rs := gr.Runes()
 
 		if len(rs) == 1 {
 			r := rs[0]
-			if r < rune(' ') { // ignore control characters
+			if r == '\r' {
-				continue
+				st = style.Dim(true)
+				rs[0] = '␍'
 			} else if r == '\n' {
-				w.lastY++
+				st = style.Dim(true)
-				lx = 0
+				rs[0] = '␊'
-				continue
+			} else if r < rune(' ') { // ignore control characters
-			} else if r == '\u000D' { // skip carriage return
 				continue
 			}
 		}
 		var xPos = w.left + w.lastX + lx
 		var yPos = w.top + w.lastY
 		if xPos < (w.left+w.width) && yPos < (w.top+w.height) {
-			_screen.SetContent(xPos, yPos, rs[0], rs[1:], style)
+			_screen.SetContent(xPos, yPos, rs[0], rs[1:], st)
 		}
-		lx += runewidth.StringWidth(string(rs))
+		lx += util.StringWidth(string(rs))
 	}
 	w.lastX += lx
 }
@@ -632,13 +628,22 @@ func (w *TcellWindow) fillString(text string, pair ColorPair) FillReturn {
 		Italic(a&Attr(tcell.AttrItalic) != 0)
 
 	gr := uniseg.NewGraphemes(text)
+Loop:
 	for gr.Next() {
+		st := style
 		rs := gr.Runes()
-		if len(rs) == 1 && rs[0] == '\n' {
+		if len(rs) == 1 {
+			r := rs[0]
+			switch r {
+			case '\r':
+				st = style.Dim(true)
+				rs[0] = '␍'
+			case '\n':
 				w.lastY++
 				w.lastX = 0
 				lx = 0
-			continue
+				continue Loop
+			}
 		}
 
 		// word wrap:
@@ -655,8 +660,8 @@ func (w *TcellWindow) fillString(text string, pair ColorPair) FillReturn {
 			return FillSuspend
 		}
 
-		_screen.SetContent(xPos, yPos, rs[0], rs[1:], style)
+		_screen.SetContent(xPos, yPos, rs[0], rs[1:], st)
-		lx += runewidth.StringWidth(string(rs))
+		lx += util.StringWidth(string(rs))
 	}
 	w.lastX += lx
 	if w.lastX == w.width {
@@ -682,7 +687,11 @@ func (w *TcellWindow) CFill(fg Color, bg Color, a Attr, str string) FillReturn {
 	return w.fillString(str, NewColorPair(fg, bg, a))
 }
 
-func (w *TcellWindow) drawBorder() {
+func (w *TcellWindow) DrawHBorder() {
+	w.drawBorder(true)
+}
+
+func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 	shape := w.borderStyle.shape
 	if shape == BorderNone {
 		return
@@ -704,35 +713,52 @@ func (w *TcellWindow) drawBorder() {
 		style = w.normal.style()
 	}
 
+	hw := runewidth.RuneWidth(w.borderStyle.top)
 	switch shape {
-	case BorderRounded, BorderSharp, BorderBold, BorderDouble, BorderHorizontal, BorderTop:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderHorizontal, BorderTop:
-		for x := left; x < right; x++ {
+		max := right - 2*hw
-			_screen.SetContent(x, top, w.borderStyle.horizontal, nil, style)
+		if shape == BorderHorizontal || shape == BorderTop {
+			max = right - hw
+		}
+		// tcell has an issue displaying two overlapping wide runes
+		// e.g.  SetContent(  HH  )
+		//       SetContent(   TR )
+		//       ==================
+		//                 (  HH  ) => TR is ignored
+		for x := left; x <= max; x += hw {
+			_screen.SetContent(x, top, w.borderStyle.top, nil, style)
 		}
 	}
 	switch shape {
-	case BorderRounded, BorderSharp, BorderBold, BorderDouble, BorderHorizontal, BorderBottom:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderHorizontal, BorderBottom:
-		for x := left; x < right; x++ {
+		max := right - 2*hw
-			_screen.SetContent(x, bot-1, w.borderStyle.horizontal, nil, style)
+		if shape == BorderHorizontal || shape == BorderBottom {
+			max = right - hw
+		}
+		for x := left; x <= max; x += hw {
+			_screen.SetContent(x, bot-1, w.borderStyle.bottom, nil, style)
 		}
 	}
+	if !onlyHorizontal {
 		switch shape {
-	case BorderRounded, BorderSharp, BorderBold, BorderDouble, BorderVertical, BorderLeft:
+		case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderVertical, BorderLeft:
 			for y := top; y < bot; y++ {
-			_screen.SetContent(left, y, w.borderStyle.vertical, nil, style)
+				_screen.SetContent(left, y, w.borderStyle.left, nil, style)
 			}
 		}
 		switch shape {
-	case BorderRounded, BorderSharp, BorderBold, BorderDouble, BorderVertical, BorderRight:
+		case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderVertical, BorderRight:
+			vw := runewidth.RuneWidth(w.borderStyle.right)
 			for y := top; y < bot; y++ {
-			_screen.SetContent(right-1, y, w.borderStyle.vertical, nil, style)
+				_screen.SetContent(right-vw, y, w.borderStyle.right, nil, style)
+			}
 		}
 	}
 	switch shape {
-	case BorderRounded, BorderSharp, BorderBold, BorderDouble:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble:
 		_screen.SetContent(left, top, w.borderStyle.topLeft, nil, style)
-		_screen.SetContent(right-1, top, w.borderStyle.topRight, nil, style)
+		_screen.SetContent(right-runewidth.RuneWidth(w.borderStyle.topRight), top, w.borderStyle.topRight, nil, style)
 		_screen.SetContent(left, bot-1, w.borderStyle.bottomLeft, nil, style)
-		_screen.SetContent(right-1, bot-1, w.borderStyle.bottomRight, nil, style)
+		_screen.SetContent(right-runewidth.RuneWidth(w.borderStyle.bottomRight), bot-1, w.borderStyle.bottomRight, nil, style)
 	}
 }

src/tui/tui.go

@@ -41,6 +41,7 @@ const (
 	CtrlZ
 	ESC
 	CtrlSpace
+	CtrlDelete
 
 	// https://apple.stackexchange.com/questions/24261/how-do-i-send-c-that-is-control-slash-to-the-terminal
 	CtrlBackSlash
@@ -74,6 +75,7 @@ const (
 	SDown
 	SLeft
 	SRight
+	SDelete
 
 	F1
 	F2
@@ -91,6 +93,10 @@ const (
 	Change
 	BackwardEOF
 	Start
+	Load
+	Focus
+	One
+	Zero
 
 	AltBS
 
@@ -268,8 +274,12 @@ type ColorTheme struct {
 	Selected         ColorAttr
 	Header           ColorAttr
 	Separator        ColorAttr
+	Scrollbar        ColorAttr
 	Border           ColorAttr
+	PreviewBorder    ColorAttr
+	PreviewScrollbar ColorAttr
 	BorderLabel      ColorAttr
+	PreviewLabel     ColorAttr
 }
 
 type Event struct {
@@ -278,6 +288,15 @@ type Event struct {
 	MouseEvent *MouseEvent
 }
 
+func (e Event) Is(types ...EventType) bool {
+	for _, t := range types {
+		if e.Type == t {
+			return true
+		}
+	}
+	return false
+}
+
 type MouseEvent struct {
 	Y      int
 	X      int
@@ -295,6 +314,8 @@ const (
 	BorderRounded
 	BorderSharp
 	BorderBold
+	BorderBlock
+	BorderThinBlock
 	BorderDouble
 	BorderHorizontal
 	BorderVertical
@@ -304,10 +325,28 @@ const (
 	BorderRight
 )
 
+func (s BorderShape) HasRight() bool {
+	switch s {
+	case BorderNone, BorderLeft, BorderTop, BorderBottom, BorderHorizontal: // No right
+		return false
+	}
+	return true
+}
+
+func (s BorderShape) HasTop() bool {
+	switch s {
+	case BorderNone, BorderLeft, BorderRight, BorderBottom, BorderVertical: // No top
+		return false
+	}
+	return true
+}
+
 type BorderStyle struct {
 	shape       BorderShape
-	horizontal  rune
+	top         rune
-	vertical    rune
+	bottom      rune
+	left        rune
+	right       rune
 	topLeft     rune
 	topRight    rune
 	bottomLeft  rune
@@ -320,8 +359,10 @@ func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 	if !unicode {
 		return BorderStyle{
 			shape:       shape,
-			horizontal:  '-',
+			top:         '-',
-			vertical:    '|',
+			bottom:      '-',
+			left:        '|',
+			right:       '|',
 			topLeft:     '+',
 			topRight:    '+',
 			bottomLeft:  '+',
@@ -332,8 +373,10 @@ func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 	case BorderSharp:
 		return BorderStyle{
 			shape:       shape,
-			horizontal:  '─',
+			top:         '─',
-			vertical:    '│',
+			bottom:      '─',
+			left:        '│',
+			right:       '│',
 			topLeft:     '┌',
 			topRight:    '┐',
 			bottomLeft:  '└',
@@ -342,18 +385,54 @@ func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 	case BorderBold:
 		return BorderStyle{
 			shape:       shape,
-			horizontal:  '━',
+			top:         '━',
-			vertical:    '┃',
+			bottom:      '━',
+			left:        '┃',
+			right:       '┃',
 			topLeft:     '┏',
 			topRight:    '┓',
 			bottomLeft:  '┗',
 			bottomRight: '┛',
 		}
+	case BorderBlock:
+		// ▛▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▜
+		// ▌                  ▐
+		// ▙▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▟
+		return BorderStyle{
+			shape:       shape,
+			top:         '▀',
+			bottom:      '▄',
+			left:        '▌',
+			right:       '▐',
+			topLeft:     '▛',
+			topRight:    '▜',
+			bottomLeft:  '▙',
+			bottomRight: '▟',
+		}
+
+	case BorderThinBlock:
+		// 🭽▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔🭾
+		// ▏                  ▕
+		// 🭼▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁🭿
+		return BorderStyle{
+			shape:       shape,
+			top:         '▔',
+			bottom:      '▁',
+			left:        '▏',
+			right:       '▕',
+			topLeft:     '🭽',
+			topRight:    '🭾',
+			bottomLeft:  '🭼',
+			bottomRight: '🭿',
+		}
+
 	case BorderDouble:
 		return BorderStyle{
 			shape:       shape,
-			horizontal:  '═',
+			top:         '═',
-			vertical:    '║',
+			bottom:      '═',
+			left:        '║',
+			right:       '║',
 			topLeft:     '╔',
 			topRight:    '╗',
 			bottomLeft:  '╚',
@@ -362,8 +441,10 @@ func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 	}
 	return BorderStyle{
 		shape:       shape,
-		horizontal:  '─',
+		top:         '─',
-		vertical:    '│',
+		bottom:      '─',
+		left:        '│',
+		right:       '│',
 		topLeft:     '╭',
 		topRight:    '╮',
 		bottomLeft:  '╰',
@@ -374,8 +455,10 @@ func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
 func MakeTransparentBorder() BorderStyle {
 	return BorderStyle{
 		shape:       BorderRounded,
-		horizontal:  ' ',
+		top:         ' ',
-		vertical:    ' ',
+		bottom:      ' ',
+		left:        ' ',
+		right:       ' ',
 		topLeft:     ' ',
 		topRight:    ' ',
 		bottomLeft:  ' ',
@@ -391,6 +474,7 @@ type Renderer interface {
 	RefreshWindows(windows []Window)
 	Refresh()
 	Close()
+	NeedScrollbarRedraw() bool
 
 	GetChar() Event
 
@@ -406,6 +490,7 @@ type Window interface {
 	Width() int
 	Height() int
 
+	DrawHBorder()
 	Refresh()
 	FinishFill()
 	Close()
@@ -428,7 +513,7 @@ type FullscreenRenderer struct {
 	mouse        bool
 	forceBlack   bool
 	prevDownTime time.Time
-	clickY       []int
+	clicks       [][2]int
 }
 
 func NewFullscreenRenderer(theme *ColorTheme, forceBlack bool, mouse bool) Renderer {
@@ -437,7 +522,7 @@ func NewFullscreenRenderer(theme *ColorTheme, forceBlack bool, mouse bool) Rende
 		mouse:        mouse,
 		forceBlack:   forceBlack,
 		prevDownTime: time.Unix(0, 0),
-		clickY:       []int{}}
+		clicks:       [][2]int{}}
 	return r
 }
 
@@ -464,23 +549,23 @@ var (
 	ColInfo                 ColorPair
 	ColHeader               ColorPair
 	ColSeparator            ColorPair
+	ColScrollbar            ColorPair
 	ColBorder               ColorPair
 	ColPreview              ColorPair
 	ColPreviewBorder        ColorPair
 	ColBorderLabel          ColorPair
+	ColPreviewLabel         ColorPair
+	ColPreviewScrollbar     ColorPair
+	ColPreviewSpinner       ColorPair
 )
 
 func EmptyTheme() *ColorTheme {
 	return &ColorTheme{
 		Colored:          true,
 		Input:            ColorAttr{colUndefined, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
 		Fg:               ColorAttr{colUndefined, AttrUndefined},
 		Bg:               ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
 		DarkBg:           ColorAttr{colUndefined, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
 		Prompt:           ColorAttr{colUndefined, AttrUndefined},
 		Match:            ColorAttr{colUndefined, AttrUndefined},
 		Current:          ColorAttr{colUndefined, AttrUndefined},
@@ -490,35 +575,47 @@ func EmptyTheme() *ColorTheme {
 		Cursor:           ColorAttr{colUndefined, AttrUndefined},
 		Selected:         ColorAttr{colUndefined, AttrUndefined},
 		Header:           ColorAttr{colUndefined, AttrUndefined},
-		Separator:    ColorAttr{colUndefined, AttrUndefined},
 		Border:           ColorAttr{colUndefined, AttrUndefined},
 		BorderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 }
 
 func NoColorTheme() *ColorTheme {
 	return &ColorTheme{
 		Colored:          false,
-		Input:        ColorAttr{colDefault, AttrRegular},
+		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colDefault, AttrRegular},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrRegular},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrRegular},
+		DarkBg:           ColorAttr{colDefault, AttrUndefined},
-		PreviewFg:    ColorAttr{colDefault, AttrRegular},
+		Prompt:           ColorAttr{colDefault, AttrUndefined},
-		PreviewBg:    ColorAttr{colDefault, AttrRegular},
-		DarkBg:       ColorAttr{colDefault, AttrRegular},
-		Gutter:       ColorAttr{colDefault, AttrRegular},
-		Prompt:       ColorAttr{colDefault, AttrRegular},
 		Match:            ColorAttr{colDefault, Underline},
 		Current:          ColorAttr{colDefault, Reverse},
 		CurrentMatch:     ColorAttr{colDefault, Reverse | Underline},
-		Spinner:      ColorAttr{colDefault, AttrRegular},
+		Spinner:          ColorAttr{colDefault, AttrUndefined},
-		Info:         ColorAttr{colDefault, AttrRegular},
+		Info:             ColorAttr{colDefault, AttrUndefined},
-		Cursor:       ColorAttr{colDefault, AttrRegular},
+		Cursor:           ColorAttr{colDefault, AttrUndefined},
-		Selected:     ColorAttr{colDefault, AttrRegular},
+		Selected:         ColorAttr{colDefault, AttrUndefined},
-		Header:       ColorAttr{colDefault, AttrRegular},
+		Header:           ColorAttr{colDefault, AttrUndefined},
-		Separator:    ColorAttr{colDefault, AttrRegular},
+		Border:           ColorAttr{colDefault, AttrUndefined},
-		Border:       ColorAttr{colDefault, AttrRegular},
+		BorderLabel:      ColorAttr{colDefault, AttrUndefined},
-		BorderLabel:  ColorAttr{colDefault, AttrRegular},
+		Disabled:         ColorAttr{colDefault, AttrUndefined},
+		PreviewFg:        ColorAttr{colDefault, AttrUndefined},
+		PreviewBg:        ColorAttr{colDefault, AttrUndefined},
+		Gutter:           ColorAttr{colDefault, AttrUndefined},
+		PreviewBorder:    ColorAttr{colDefault, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colDefault, AttrUndefined},
+		PreviewLabel:     ColorAttr{colDefault, AttrUndefined},
+		Separator:        ColorAttr{colDefault, AttrUndefined},
+		Scrollbar:        ColorAttr{colDefault, AttrUndefined},
 	}
 }
 
@@ -531,13 +628,9 @@ func init() {
 	Default16 = &ColorTheme{
 		Colored:          true,
 		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
 		DarkBg:           ColorAttr{colBlack, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
 		Prompt:           ColorAttr{colBlue, AttrUndefined},
 		Match:            ColorAttr{colGreen, AttrUndefined},
 		Current:          ColorAttr{colYellow, AttrUndefined},
@@ -547,20 +640,24 @@ func init() {
 		Cursor:           ColorAttr{colRed, AttrUndefined},
 		Selected:         ColorAttr{colMagenta, AttrUndefined},
 		Header:           ColorAttr{colCyan, AttrUndefined},
-		Separator:    ColorAttr{colBlack, AttrUndefined},
 		Border:           ColorAttr{colBlack, AttrUndefined},
 		BorderLabel:      ColorAttr{colWhite, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 	Dark256 = &ColorTheme{
 		Colored:          true,
 		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
 		DarkBg:           ColorAttr{236, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
 		Prompt:           ColorAttr{110, AttrUndefined},
 		Match:            ColorAttr{108, AttrUndefined},
 		Current:          ColorAttr{254, AttrUndefined},
@@ -570,20 +667,24 @@ func init() {
 		Cursor:           ColorAttr{161, AttrUndefined},
 		Selected:         ColorAttr{168, AttrUndefined},
 		Header:           ColorAttr{109, AttrUndefined},
-		Separator:    ColorAttr{59, AttrUndefined},
 		Border:           ColorAttr{59, AttrUndefined},
 		BorderLabel:      ColorAttr{145, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 	Light256 = &ColorTheme{
 		Colored:          true,
 		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
 		Fg:               ColorAttr{colDefault, AttrUndefined},
 		Bg:               ColorAttr{colDefault, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
 		DarkBg:           ColorAttr{251, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
 		Prompt:           ColorAttr{25, AttrUndefined},
 		Match:            ColorAttr{66, AttrUndefined},
 		Current:          ColorAttr{237, AttrUndefined},
@@ -593,9 +694,17 @@ func init() {
 		Cursor:           ColorAttr{161, AttrUndefined},
 		Selected:         ColorAttr{168, AttrUndefined},
 		Header:           ColorAttr{31, AttrUndefined},
-		Separator:    ColorAttr{145, AttrUndefined},
 		Border:           ColorAttr{145, AttrUndefined},
 		BorderLabel:      ColorAttr{59, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
 	}
 }
 
@@ -615,13 +724,9 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 		return c
 	}
 	theme.Input = o(baseTheme.Input, theme.Input)
-	theme.Disabled = o(theme.Input, o(baseTheme.Disabled, theme.Disabled))
 	theme.Fg = o(baseTheme.Fg, theme.Fg)
 	theme.Bg = o(baseTheme.Bg, theme.Bg)
-	theme.PreviewFg = o(theme.Fg, o(baseTheme.PreviewFg, theme.PreviewFg))
-	theme.PreviewBg = o(theme.Bg, o(baseTheme.PreviewBg, theme.PreviewBg))
 	theme.DarkBg = o(baseTheme.DarkBg, theme.DarkBg)
-	theme.Gutter = o(theme.DarkBg, o(baseTheme.Gutter, theme.Gutter))
 	theme.Prompt = o(baseTheme.Prompt, theme.Prompt)
 	theme.Match = o(baseTheme.Match, theme.Match)
 	theme.Current = o(baseTheme.Current, theme.Current)
@@ -631,10 +736,20 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 	theme.Cursor = o(baseTheme.Cursor, theme.Cursor)
 	theme.Selected = o(baseTheme.Selected, theme.Selected)
 	theme.Header = o(baseTheme.Header, theme.Header)
-	theme.Separator = o(baseTheme.Separator, theme.Separator)
 	theme.Border = o(baseTheme.Border, theme.Border)
 	theme.BorderLabel = o(baseTheme.BorderLabel, theme.BorderLabel)
 
+	// These colors are not defined in the base themes
+	theme.Disabled = o(theme.Input, theme.Disabled)
+	theme.Gutter = o(theme.DarkBg, theme.Gutter)
+	theme.PreviewFg = o(theme.Fg, theme.PreviewFg)
+	theme.PreviewBg = o(theme.Bg, theme.PreviewBg)
+	theme.PreviewLabel = o(theme.BorderLabel, theme.PreviewLabel)
+	theme.PreviewBorder = o(theme.Border, theme.PreviewBorder)
+	theme.Separator = o(theme.Border, theme.Separator)
+	theme.Scrollbar = o(theme.Border, theme.Scrollbar)
+	theme.PreviewScrollbar = o(theme.PreviewBorder, theme.PreviewScrollbar)
+
 	initPalette(theme)
 }
 
@@ -666,8 +781,12 @@ func initPalette(theme *ColorTheme) {
 	ColInfo = pair(theme.Info, theme.Bg)
 	ColHeader = pair(theme.Header, theme.Bg)
 	ColSeparator = pair(theme.Separator, theme.Bg)
+	ColScrollbar = pair(theme.Scrollbar, theme.Bg)
 	ColBorder = pair(theme.Border, theme.Bg)
 	ColBorderLabel = pair(theme.BorderLabel, theme.Bg)
+	ColPreviewLabel = pair(theme.PreviewLabel, theme.PreviewBg)
 	ColPreview = pair(theme.PreviewFg, theme.PreviewBg)
-	ColPreviewBorder = pair(theme.Border, theme.PreviewBg)
+	ColPreviewBorder = pair(theme.PreviewBorder, theme.PreviewBg)
+	ColPreviewScrollbar = pair(theme.PreviewScrollbar, theme.PreviewBg)
+	ColPreviewSpinner = pair(theme.Spinner, theme.PreviewBg)
 }

src/util/eventbox_test.go

@@ -9,7 +9,6 @@ const (
 	EvtSearchNew
 	EvtSearchProgress
 	EvtSearchFin
-	EvtClose
 )
 
 func TestEventBox(t *testing.T) {

src/util/util.go

@@ -11,6 +11,11 @@ import (
 	"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")
+}
+
 // RunesWidth returns runes width
 func RunesWidth(runes []rune, prefixWidth int, tabstop int, limit int) (int, int) {
 	width := 0
@@ -22,8 +27,7 @@ func RunesWidth(runes []rune, prefixWidth int, tabstop int, limit int) (int, int
 		if len(rs) == 1 && rs[0] == '\t' {
 			w = tabstop - (prefixWidth+width)%tabstop
 		} else {
-			s := string(rs)
+			w = StringWidth(string(rs))
-			w = runewidth.StringWidth(s) + strings.Count(s, "\n")
 		}
 		width += w
 		if width > limit {
@@ -41,7 +45,7 @@ func Truncate(input string, limit int) ([]rune, int) {
 	gr := uniseg.NewGraphemes(input)
 	for gr.Next() {
 		rs := gr.Runes()
-		w := runewidth.StringWidth(string(rs))
+		w := StringWidth(string(rs))
 		if width+w > limit {
 			return runes, width
 		}

src/util/util_test.go

@@ -1,14 +1,76 @@
 package util
 
-import "testing"
+import (
+	"math"
+	"strings"
+	"testing"
+	"time"
+)
 
 func TestMax(t *testing.T) {
+	if Max(10, 1) != 10 {
+		t.Error("Expected", 10)
+	}
 	if Max(-2, 5) != 5 {
-		t.Error("Invalid result")
+		t.Error("Expected", 5)
 	}
 }
 
-func TestContrain(t *testing.T) {
+func TestMax16(t *testing.T) {
+	if Max16(10, 1) != 10 {
+		t.Error("Expected", 10)
+	}
+	if Max16(-2, 5) != 5 {
+		t.Error("Expected", 5)
+	}
+	if Max16(math.MaxInt16, 0) != math.MaxInt16 {
+		t.Error("Expected", math.MaxInt16)
+	}
+	if Max16(0, math.MinInt16) != 0 {
+		t.Error("Expected", 0)
+	}
+}
+
+func TestMax32(t *testing.T) {
+	if Max32(10, 1) != 10 {
+		t.Error("Expected", 10)
+	}
+	if Max32(-2, 5) != 5 {
+		t.Error("Expected", 5)
+	}
+	if Max32(math.MaxInt32, 0) != math.MaxInt32 {
+		t.Error("Expected", math.MaxInt32)
+	}
+	if Max32(0, math.MinInt32) != 0 {
+		t.Error("Expected", 0)
+	}
+}
+
+func TestMin(t *testing.T) {
+	if Min(10, 1) != 1 {
+		t.Error("Expected", 1)
+	}
+	if Min(-2, 5) != -2 {
+		t.Error("Expected", -2)
+	}
+}
+
+func TestMin32(t *testing.T) {
+	if Min32(10, 1) != 1 {
+		t.Error("Expected", 1)
+	}
+	if Min32(-2, 5) != -2 {
+		t.Error("Expected", -2)
+	}
+	if Min32(math.MaxInt32, 0) != 0 {
+		t.Error("Expected", 0)
+	}
+	if Min32(0, math.MinInt32) != math.MinInt32 {
+		t.Error("Expected", math.MinInt32)
+	}
+}
+
+func TestConstrain(t *testing.T) {
 	if Constrain(-3, -1, 3) != -1 {
 		t.Error("Expected", -1)
 	}
@@ -21,6 +83,55 @@ func TestContrain(t *testing.T) {
 	}
 }
 
+func TestConstrain32(t *testing.T) {
+	if Constrain32(-3, -1, 3) != -1 {
+		t.Error("Expected", -1)
+	}
+	if Constrain32(2, -1, 3) != 2 {
+		t.Error("Expected", 2)
+	}
+
+	if Constrain32(5, -1, 3) != 3 {
+		t.Error("Expected", 3)
+	}
+	if Constrain32(0, math.MinInt32, math.MaxInt32) != 0 {
+		t.Error("Expected", 0)
+	}
+}
+
+func TestAsUint16(t *testing.T) {
+	if AsUint16(5) != 5 {
+		t.Error("Expected", 5)
+	}
+	if AsUint16(-10) != 0 {
+		t.Error("Expected", 0)
+	}
+	if AsUint16(math.MaxUint16) != math.MaxUint16 {
+		t.Error("Expected", math.MaxUint16)
+	}
+	if AsUint16(math.MinInt32) != 0 {
+		t.Error("Expected", 0)
+	}
+	if AsUint16(math.MinInt16) != 0 {
+		t.Error("Expected", 0)
+	}
+	if AsUint16(math.MaxUint16+1) != math.MaxUint16 {
+		t.Error("Expected", math.MaxUint16)
+	}
+}
+
+func TestDurWithIn(t *testing.T) {
+	if DurWithin(time.Duration(5), time.Duration(1), time.Duration(8)) != time.Duration(5) {
+		t.Error("Expected", time.Duration(0))
+	}
+	if DurWithin(time.Duration(0)*time.Second, time.Second, time.Duration(3)*time.Second) != time.Second {
+		t.Error("Expected", time.Second)
+	}
+	if DurWithin(time.Duration(10)*time.Second, time.Duration(0), time.Second) != time.Second {
+		t.Error("Expected", time.Second)
+	}
+}
+
 func TestOnce(t *testing.T) {
 	o := Once(false)
 	if o() {
@@ -64,3 +175,12 @@ func TestTruncate(t *testing.T) {
 		t.Errorf("Expected: 6, actual: %d", width)
 	}
 }
+
+func TestRepeatToFill(t *testing.T) {
+	if RepeatToFill("abcde", 10, 50) != strings.Repeat("abcde", 5) {
+		t.Error("Expected:", strings.Repeat("abcde", 5))
+	}
+	if RepeatToFill("abcde", 10, 42) != strings.Repeat("abcde", 4)+"abcde"[:2] {
+		t.Error("Expected:", strings.Repeat("abcde", 4)+"abcde"[:2])
+	}
+}

src/util/util_unix.go

@@ -6,6 +6,8 @@ import (
 	"os"
 	"os/exec"
 	"syscall"
+
+	"golang.org/x/sys/unix"
 )
 
 // ExecCommand executes the given command with $SHELL
@@ -45,3 +47,7 @@ func SetNonblock(file *os.File, nonblock bool) {
 func Read(fd int, b []byte) (int, error) {
 	return syscall.Read(int(fd), b)
 }
+
+func SetStdin(file *os.File) {
+	unix.Dup2(int(file.Fd()), 0)
+}

src/util/util_windows.go

@@ -81,3 +81,7 @@ func SetNonblock(file *os.File, nonblock bool) {
 func Read(fd int, b []byte) (int, error) {
 	return syscall.Read(syscall.Handle(fd), b)
 }
+
+func SetStdin(file *os.File) {
+	// No-op
+}

test/test_go.rb

@@ -7,6 +7,7 @@ require 'English'
 require 'shellwords'
 require 'erb'
 require 'tempfile'
+require 'net/http'
 
 TEMPLATE = DATA.read
 UNSETS = %w[
@@ -22,7 +23,7 @@ DEFAULT_TIMEOUT = 10
 FILE = File.expand_path(__FILE__)
 BASE = File.expand_path('..', __dir__)
 Dir.chdir(BASE)
-FZF = "FZF_DEFAULT_OPTS= FZF_DEFAULT_COMMAND= #{BASE}/bin/fzf"
+FZF = "FZF_DEFAULT_OPTS=--no-scrollbar FZF_DEFAULT_COMMAND= #{BASE}/bin/fzf"
 
 def wait
   since = Time.now
@@ -64,7 +65,7 @@ class Shell
     end
 
     def fish
-      UNSETS.map { |v| v + '= ' }.join + 'fish'
+      UNSETS.map { |v| v + '= ' }.join + ' FZF_DEFAULT_OPTS=--no-scrollbar fish'
     end
   end
 end
@@ -179,7 +180,7 @@ class TestBase < Minitest::Test
   end
 
   def writelines(path, lines)
-    File.unlink(path) while File.exist?(path)
+    FileUtils.rm_f(path) while File.exist?(path)
     File.open(path, 'w') { |f| f.puts lines }
   end
 
@@ -187,7 +188,7 @@ class TestBase < Minitest::Test
     wait { assert_path_exists tempname }
     File.read(tempname)
   ensure
-    File.unlink(tempname) while File.exist?(tempname)
+    FileUtils.rm_f(tempname) while File.exist?(tempname)
     @temp_suffix += 1
     tmux.prepare
   end
@@ -779,6 +780,10 @@ class TestGoFZF < TestBase
       '2 foobar baz',
       '3 foo barbaz'
     ], `#{FZF} -fba --tiebreak=chunk < #{tempname}`.lines(chomp: true)
+
+    assert_equal [
+      '3 foo barbaz'
+    ], `#{FZF} -f'!foobar' --tiebreak=chunk < #{tempname}`.lines(chomp: true)
   end
 
   def test_invalid_cache
@@ -900,11 +905,7 @@ class TestGoFZF < TestBase
     history_file = '/tmp/fzf-test-history'
 
     # History with limited number of entries
-    begin
+    FileUtils.rm_f(history_file)
-      File.unlink(history_file)
-    rescue StandardError
-      nil
-    end
     opts = "--history=#{history_file} --history-size=4"
     input = %w[00 11 22 33 44]
     input.each do |keys|
@@ -917,7 +918,7 @@ class TestGoFZF < TestBase
     end
     wait do
       assert_path_exists history_file
-      assert_equal input[1..-1], File.readlines(history_file, chomp: true)
+      assert_equal input[1..], File.readlines(history_file, chomp: true)
     end
 
     # Update history entries (not changed on disk)
@@ -950,7 +951,7 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal '> 33', lines[-1] }
     tmux.send_keys :Enter
   ensure
-    File.unlink(history_file)
+    FileUtils.rm_f(history_file)
   end
 
   def test_execute
@@ -979,11 +980,7 @@ class TestGoFZF < TestBase
       ], File.readlines(output, chomp: true)
     end
   ensure
-    begin
+    FileUtils.rm_f(output)
-      File.unlink(output)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_execute_multi
@@ -1008,20 +1005,12 @@ class TestGoFZF < TestBase
       ], File.readlines(output, chomp: true)
     end
   ensure
-    begin
+    FileUtils.rm_f(output)
-      File.unlink(output)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_execute_plus_flag
     output = tempname + '.tmp'
-    begin
+    FileUtils.rm_f(output)
-      File.unlink(output)
-    rescue StandardError
-      nil
-    end
     writelines(tempname, ['foo bar', '123 456'])
 
     tmux.send_keys "cat #{tempname} | #{FZF} --multi --bind 'x:execute-silent(echo {+}/{}/{+2}/{2} >> #{output})'", :Enter
@@ -1054,21 +1043,13 @@ class TestGoFZF < TestBase
       ], File.readlines(output, chomp: true)
     end
   rescue StandardError
-    begin
+    FileUtils.rm_f(output)
-      File.unlink(output)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_execute_shell
     # Custom script to use as $SHELL
     output = tempname + '.out'
-    begin
+    FileUtils.rm_f(output)
-      File.unlink(output)
-    rescue StandardError
-      nil
-    end
     writelines(tempname,
                ['#!/usr/bin/env bash', "echo $1 / $2 > #{output}"])
     system("chmod +x #{tempname}")
@@ -1082,11 +1063,7 @@ class TestGoFZF < TestBase
       assert_equal ["-c / 'foo'bar"], File.readlines(output, chomp: true)
     end
   ensure
-    begin
+    FileUtils.rm_f(output)
-      File.unlink(output)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_cycle
@@ -1480,6 +1457,83 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_includes lines[1], ' {5-1  3 4} ' }
   end
 
+  def test_toggle_preview_without_default_preview_command
+    tmux.send_keys %(seq 100 | #{FZF} --bind 'space:preview(echo [{}]),enter:toggle-preview' --preview-window up,border-double), :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.match_count
+      refute_includes lines[1], '║ [1]'
+    end
+
+    # toggle-preview should do nothing
+    tmux.send_keys :Enter
+    tmux.until { |lines| refute_includes lines[1], '║ [1]' }
+    tmux.send_keys :Up
+    tmux.until do |lines|
+      refute_includes lines[1], '║ [1]'
+      refute_includes lines[1], '║ [2]'
+    end
+
+    tmux.send_keys :Up
+    tmux.until do |lines|
+      assert_includes lines, '> 3'
+      refute_includes lines[1], '║ [3]'
+    end
+
+    # One-off preview action
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_includes lines[1], '║ [3]' }
+
+    # toggle-preview to hide it
+    tmux.send_keys :Enter
+    tmux.until { |lines| refute_includes lines[1], '║ [3]' }
+
+    # toggle-preview again does nothing
+    tmux.send_keys :Enter, :Up
+    tmux.until do |lines|
+      assert_includes lines, '> 4'
+      refute_includes lines[1], '║ [4]'
+    end
+  end
+
+  def test_show_and_hide_preview
+    tmux.send_keys %(seq 100 | #{FZF} --preview-window hidden,border-bold --preview 'echo [{}]' --bind 'a:show-preview,b:hide-preview'), :Enter
+
+    # Hidden by default
+    tmux.until do |lines|
+      assert_equal 100, lines.match_count
+      refute_includes lines[1], '┃ [1]'
+    end
+
+    # Show
+    tmux.send_keys :a
+    tmux.until { |lines| assert_includes lines[1], '┃ [1]' }
+
+    # Already shown
+    tmux.send_keys :a
+    tmux.send_keys :Up
+    tmux.until { |lines| assert_includes lines[1], '┃ [2]' }
+
+    # Hide
+    tmux.send_keys :b
+    tmux.send_keys :Up
+    tmux.until do |lines|
+      assert_includes lines, '> 3'
+      refute_includes lines[1], '┃ [3]'
+    end
+
+    # Already hidden
+    tmux.send_keys :b
+    tmux.send_keys :Up
+    tmux.until do |lines|
+      assert_includes lines, '> 4'
+      refute_includes lines[1], '┃ [4]'
+    end
+
+    # Show it again
+    tmux.send_keys :a
+    tmux.until { |lines| assert_includes lines[1], '┃ [4]' }
+  end
+
   def test_preview_hidden
     tmux.send_keys %(seq 1000 | #{FZF} --preview 'echo {{}-{}-$FZF_PREVIEW_LINES-$FZF_PREVIEW_COLUMNS}' --preview-window down:1:hidden --bind ?:toggle-preview), :Enter
     tmux.until { |lines| assert_equal '>', lines[-1] }
@@ -1492,12 +1546,8 @@ class TestGoFZF < TestBase
   end
 
   def test_preview_size_0
-    begin
+    FileUtils.rm_f(tempname)
-      File.unlink(tempname)
+    tmux.send_keys %(seq 100 | #{FZF} --reverse --preview 'echo {} >> #{tempname}; echo ' --preview-window 0 --bind space:toggle-preview), :Enter
-    rescue StandardError
-      nil
-    end
-    tmux.send_keys %(seq 100 | #{FZF} --reverse --preview 'echo {} >> #{tempname}; echo ' --preview-window 0), :Enter
     tmux.until do |lines|
       assert_equal 100, lines.item_count
       assert_equal '  100/100', lines[1]
@@ -1507,17 +1557,43 @@ class TestGoFZF < TestBase
       assert_path_exists tempname
       assert_equal %w[1], File.readlines(tempname, chomp: true)
     end
-    tmux.send_keys :Down
+    tmux.send_keys :Space, :Down, :Down
-    tmux.until { |lines| assert_equal '> 2', lines[3] }
-    wait do
-      assert_path_exists tempname
-      assert_equal %w[1 2], File.readlines(tempname, chomp: true)
-    end
-    tmux.send_keys :Down
     tmux.until { |lines| assert_equal '> 3', lines[4] }
     wait do
       assert_path_exists tempname
-      assert_equal %w[1 2 3], File.readlines(tempname, chomp: true)
+      assert_equal %w[1], File.readlines(tempname, chomp: true)
+    end
+    tmux.send_keys :Space, :Down
+    tmux.until { |lines| assert_equal '> 4', lines[5] }
+    wait do
+      assert_path_exists tempname
+      assert_equal %w[1 3 4], File.readlines(tempname, chomp: true)
+    end
+  end
+
+  def test_preview_size_0_hidden
+    FileUtils.rm_f(tempname)
+    tmux.send_keys %(seq 100 | #{FZF} --reverse --preview 'echo {} >> #{tempname}; echo ' --preview-window 0,hidden --bind space:toggle-preview), :Enter
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+    tmux.send_keys :Down, :Down
+    tmux.until { |lines| assert_includes lines, '> 3' }
+    wait { refute_path_exists tempname }
+    tmux.send_keys :Space
+    wait do
+      assert_path_exists tempname
+      assert_equal %w[3], File.readlines(tempname, chomp: true)
+    end
+    tmux.send_keys :Down
+    wait do
+      assert_equal %w[3 4], File.readlines(tempname, chomp: true)
+    end
+    tmux.send_keys :Space, :Down
+    tmux.until { |lines| assert_includes lines, '> 5' }
+    tmux.send_keys :Down
+    tmux.until { |lines| assert_includes lines, '> 6' }
+    tmux.send_keys :Space
+    wait do
+      assert_equal %w[3 4 6], File.readlines(tempname, chomp: true)
     end
   end
 
@@ -1550,13 +1626,13 @@ class TestGoFZF < TestBase
   end
 
   def test_preview_q_no_match
-    tmux.send_keys %(: | #{FZF} --preview 'echo foo {q}'), :Enter
+    tmux.send_keys %(: | #{FZF} --preview 'echo foo {q} foo'), :Enter
     tmux.until { |lines| assert_equal 0, lines.match_count }
-    tmux.until { |lines| refute_includes lines[1], ' foo ' }
+    tmux.until { |lines| assert_includes lines[1], ' foo  foo' }
     tmux.send_keys 'bar'
-    tmux.until { |lines| assert_includes lines[1], ' foo bar ' }
+    tmux.until { |lines| assert_includes lines[1], ' foo bar foo' }
     tmux.send_keys 'C-u'
-    tmux.until { |lines| refute_includes lines[1], ' foo ' }
+    tmux.until { |lines| assert_includes lines[1], ' foo  foo' }
   end
 
   def test_preview_q_no_match_with_initial_query
@@ -1582,6 +1658,11 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal '> 1', lines[-2] }
   end
 
+  def test_info_inline_separator
+    tmux.send_keys 'seq 10 | fzf --info=inline:___ --no-separator', :Enter
+    tmux.until { |lines| assert_equal '>  ___10/10', lines[-1] }
+  end
+
   def test_change_first_last
     tmux.send_keys %(seq 1000 | #{FZF} --bind change:first,alt-Z:last), :Enter
     tmux.until { |lines| assert_equal 1000, lines.match_count }
@@ -1600,6 +1681,30 @@ class TestGoFZF < TestBase
     tmux.send_keys :Enter
   end
 
+  def test_pos
+    tmux.send_keys %(seq 1000 | #{FZF} --bind 'a:pos(3),b:pos(-3),c:pos(1),d:pos(-1),e:pos(0)' --preview 'echo {}/{}'), :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys :a
+    tmux.until { |lines| assert_includes lines[1], ' 3/3' }
+    tmux.send_keys :b
+    tmux.until { |lines| assert_includes lines[1], ' 998/998' }
+    tmux.send_keys :c
+    tmux.until { |lines| assert_includes lines[1], ' 1/1' }
+    tmux.send_keys :d
+    tmux.until { |lines| assert_includes lines[1], ' 1000/1000' }
+    tmux.send_keys :e
+    tmux.until { |lines| assert_includes lines[1], ' 1/1' }
+  end
+
+  def test_put
+    tmux.send_keys %(seq 1000 | #{FZF} --bind 'a:put+put,b:put+put(ravo)' --preview 'echo {q}/{q}'), :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys :a
+    tmux.until { |lines| assert_includes lines[1], ' aa/aa' }
+    tmux.send_keys :b
+    tmux.until { |lines| assert_includes lines[1], ' aabravo/aabravo' }
+  end
+
   def test_accept_non_empty
     tmux.send_keys %(seq 1000 | #{fzf('--print-query --bind enter:accept-non-empty')}), :Enter
     tmux.until { |lines| assert_equal 1000, lines.match_count }
@@ -1760,6 +1865,93 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal '>', lines.last }
   end
 
+  def test_change_and_transform_header
+    [
+      'space:change-header:$(seq 4)',
+      'space:transform-header:seq 4'
+    ].each_with_index do |binding, i|
+      tmux.send_keys %(seq 3 | #{FZF} --header-lines 2 --header bar --bind "#{binding}"), :Enter
+      expected = <<~OUTPUT
+        > 3
+          2
+          1
+          bar
+          1/1
+        >
+      OUTPUT
+      tmux.until { assert_block(expected, _1) }
+      tmux.send_keys :Space
+      expected = <<~OUTPUT
+        > 3
+          2
+          1
+          1
+          2
+          3
+          4
+          1/1
+        >
+      OUTPUT
+      tmux.until { assert_block(expected, _1) }
+      next unless i.zero?
+
+      teardown
+      setup
+    end
+  end
+
+  def test_change_header
+    tmux.send_keys %(seq 3 | #{FZF} --header-lines 2 --header bar --bind "space:change-header:$(seq 4)"), :Enter
+    expected = <<~OUTPUT
+      > 3
+        2
+        1
+        bar
+        1/1
+      >
+    OUTPUT
+    tmux.until { assert_block(expected, _1) }
+    tmux.send_keys :Space
+    expected = <<~OUTPUT
+      > 3
+        2
+        1
+        1
+        2
+        3
+        4
+        1/1
+      >
+    OUTPUT
+    tmux.until { assert_block(expected, _1) }
+  end
+
+  def test_change_query
+    tmux.send_keys %(: | #{FZF} --query foo --bind space:change-query:foobar), :Enter
+    tmux.until { |lines| assert_equal 0, lines.item_count }
+    tmux.until { |lines| assert_equal '> foo', lines.last }
+    tmux.send_keys :Space, 'baz'
+    tmux.until { |lines| assert_equal '> foobarbaz', lines.last }
+  end
+
+  def test_transform_query
+    tmux.send_keys %{#{FZF} --bind 'ctrl-r:transform-query(rev <<< {q}),ctrl-u:transform-query: tr "[:lower:]" "[:upper:]" <<< {q}' --query bar}, :Enter
+    tmux.until { |lines| assert_equal '> bar', lines[-1] }
+    tmux.send_keys 'C-r'
+    tmux.until { |lines| assert_equal '> rab', lines[-1] }
+    tmux.send_keys 'C-u'
+    tmux.until { |lines| assert_equal '> RAB', lines[-1] }
+  end
+
+  def test_transform_prompt
+    tmux.send_keys %{#{FZF} --bind 'ctrl-r:transform-query(rev <<< {q}),ctrl-u:transform-query: tr "[:lower:]" "[:upper:]" <<< {q}' --query bar}, :Enter
+    tmux.until { |lines| assert_equal '> bar', lines[-1] }
+    tmux.send_keys 'C-r'
+    tmux.until { |lines| assert_equal '> rab', lines[-1] }
+    tmux.send_keys 'C-u'
+    tmux.until { |lines| assert_equal '> RAB', 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 }
@@ -1799,7 +1991,7 @@ class TestGoFZF < TestBase
 
   def test_keep_right
     tmux.send_keys "seq 10000 | #{FZF} --read0 --keep-right", :Enter
-    tmux.until { |lines| assert lines.any_include?('9999 10000') }
+    tmux.until { |lines| assert lines.any_include?('9999␊10000') }
   end
 
   def test_backward_eof
@@ -1888,8 +2080,69 @@ class TestGoFZF < TestBase
   end
 
   def test_preview_window_follow
-    tmux.send_keys "#{FZF} --preview 'seq 1000 | nl' --preview-window down:noborder:follow", :Enter
+    file = Tempfile.new('fzf-follow')
-    tmux.until { |lines| assert_equal '1000  1000', lines[-1].strip }
+    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.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
+    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[-2], '999' }
+
+    # Scroll the preview window and fzf should stop following the file content
+    tmux.send_keys :Up
+    tmux.until { |lines| assert_includes lines[-2], '998' }
+    file.puts 'foo', 'bar'
+    tmux.until do |lines|
+      assert_includes lines[1], '/1005'
+      assert_includes lines[-2], '998'
+    end
+
+    # Scroll back to the bottom and fzf should start following the file again
+    %w[999 foo bar].each do |item|
+      wait do
+        tmux.send_keys :Down
+        tmux.until { |lines| assert_includes lines[-2], item }
+      end
+    end
+    file.puts 'baz'
+    tmux.until do |lines|
+      assert_includes lines[1], '/1006'
+      assert_includes lines[-2], 'baz'
+    end
+
+    # Scroll upwards to stop following
+    tmux.send_keys :Up
+    wait { assert_includes lines[-2], 'bar' }
+    file.puts 'aaa'
+    tmux.until do |lines|
+      assert_includes lines[1], '/1007'
+      assert_includes lines[-2], 'bar'
+    end
+
+    # Manually enable following
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_includes lines[-2], 'aaa' }
+    file.puts 'bbb'
+    tmux.until do |lines|
+      assert_includes lines[1], '/1008'
+      assert_includes lines[-2], 'bbb'
+    end
+
+    # Disable following
+    tmux.send_keys :Space
+    file.puts 'ccc', 'ddd'
+    tmux.until do |lines|
+      assert_includes lines[1], '/1010'
+      assert_includes lines[-2], 'bbb'
+    end
+  rescue StandardError
+    file.close
+    file.unlink
   end
 
   def test_toggle_preview_wrap
@@ -1966,11 +2219,7 @@ class TestGoFZF < TestBase
     wait { refute system("pgrep -f #{script}") }
   ensure
     system("pkill -9 -f #{script}")
-    begin
+    FileUtils.rm_f(script)
-      File.unlink(script)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_kill_default_command_on_accept
@@ -1988,11 +2237,7 @@ class TestGoFZF < TestBase
     wait { refute system("pgrep -f #{script}") }
   ensure
     system("pkill -9 -f #{script}")
-    begin
+    FileUtils.rm_f(script)
-      File.unlink(script)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_kill_reload_command_on_abort
@@ -2013,11 +2258,7 @@ class TestGoFZF < TestBase
     wait { refute system("pgrep -f #{script}") }
   ensure
     system("pkill -9 -f #{script}")
-    begin
+    FileUtils.rm_f(script)
-      File.unlink(script)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_kill_reload_command_on_accept
@@ -2037,11 +2278,7 @@ class TestGoFZF < TestBase
     wait { refute system("pgrep -f #{script}") }
   ensure
     system("pkill -9 -f #{script}")
-    begin
+    FileUtils.rm_f(script)
-      File.unlink(script)
-    rescue StandardError
-      nil
-    end
   end
 
   def test_preview_header
@@ -2115,6 +2352,15 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_includes lines[1], '4' }
   end
 
+  def test_reload_sync
+    tmux.send_keys "seq 100 | #{FZF} --bind 'load:reload-sync(sleep 1; seq 1000)+unbind(load)'", :Enter
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+    tmux.send_keys '00'
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    # After 1 second
+    tmux.until { |lines| assert_equal 10, lines.match_count }
+  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 }
@@ -2247,6 +2493,39 @@ class TestGoFZF < TestBase
     end
   end
 
+  def test_change_preview_window_rotate_hidden
+    tmux.send_keys "seq 100 | #{FZF} --preview-window hidden --preview 'echo =={}==' --bind '" \
+      "a:change-preview-window(nohidden||down,1|)'", :Enter
+    tmux.until { |lines| assert_equal 100, lines.match_count }
+    tmux.until { |lines| refute_includes lines[1], '==1==' }
+    tmux.send_keys 'a'
+    tmux.until { |lines| assert_includes lines[1], '==1==' }
+    tmux.send_keys 'a'
+    tmux.until { |lines| refute_includes lines[1], '==1==' }
+    tmux.send_keys 'a'
+    tmux.until { |lines| assert_includes lines[-2], '==1==' }
+    tmux.send_keys 'a'
+    tmux.until { |lines| refute_includes lines[-2], '==1==' }
+    tmux.send_keys 'a'
+    tmux.until { |lines| assert_includes lines[1], '==1==' }
+  end
+
+  def test_change_preview_window_rotate_hidden_down
+    tmux.send_keys "seq 100 | #{FZF} --bind '?:change-preview-window:up||down|' --preview 'echo =={}==' --preview-window hidden,down,1", :Enter
+    tmux.until { |lines| assert_equal 100, lines.match_count }
+    tmux.until { |lines| refute_includes lines[1], '==1==' }
+    tmux.send_keys '?'
+    tmux.until { |lines| assert_includes lines[1], '==1==' }
+    tmux.send_keys '?'
+    tmux.until { |lines| refute_includes lines[1], '==1==' }
+    tmux.send_keys '?'
+    tmux.until { |lines| assert_includes lines[-2], '==1==' }
+    tmux.send_keys '?'
+    tmux.until { |lines| refute_includes lines[-2], '==1==' }
+    tmux.send_keys '?'
+    tmux.until { |lines| assert_includes lines[1], '==1==' }
+  end
+
   def test_ellipsis
     tmux.send_keys 'seq 1000 | tr "\n" , | fzf --ellipsis=SNIPSNIP -e -q500', :Enter
     tmux.until { |lines| assert_equal 1, lines.match_count }
@@ -2341,19 +2620,42 @@ class TestGoFZF < TestBase
   end
 
   def test_start_event
-    tmux.send_keys 'seq 100 | fzf --multi --sync --preview-window border-none --bind "start:select-all+last+preview(echo welcome)"', :Enter
+    tmux.send_keys 'seq 100 | fzf --multi --sync --preview-window hidden:border-none --bind "start:select-all+last+preview(echo welcome)"', :Enter
     tmux.until do |lines|
       assert_match(/>100.*welcome/, lines[0])
       assert_includes(lines[-2], '100/100 (100)')
     end
   end
 
+  def test_focus_event
+    tmux.send_keys 'seq 100 | fzf --bind "focus:transform-prompt(echo [[{}]]),?:unbind(focus)"', :Enter
+    tmux.until { |lines| assert_includes(lines[-1], '[[1]]') }
+    tmux.send_keys :Up
+    tmux.until { |lines| assert_includes(lines[-1], '[[2]]') }
+    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_labels_center
-    tmux.send_keys ': | fzf --border --border-label foobar --preview : --preview-label barfoo', :Enter
+    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
       assert_includes(_1[0], '─foobar─')
       assert_includes(_1[1], '─barfoo─')
     end
+    tmux.send_keys :space
+    tmux.until do
+      assert_includes(_1[0], '─foobarfoo─')
+      assert_includes(_1[1], '─barfoobar─')
+    end
+    tmux.send_keys :Enter
+    tmux.until do
+      assert_includes(_1[0], '─fooxfoo─')
+      assert_includes(_1[1], '─barxbar─')
+    end
   end
 
   def test_labels_left
@@ -2404,6 +2706,253 @@ class TestGoFZF < TestBase
     tmux.send_keys 'seq 100 | fzf -q55 --no-separator', :Enter
     tmux.until { assert(_1[-2] == '  1/100') }
   end
+
+  def test_info_right
+    tmux.send_keys "#{FZF} --info=right --separator x --bind 'start:reload:seq 100; sleep 10'", :Enter
+    tmux.until { assert_match(%r{xxx [⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏] 100/100}, _1[-2]) }
+  end
+
+  def test_info_inline_right
+    tmux.send_keys "#{FZF} --info=inline-right --bind 'start:reload:seq 100; sleep 10'", :Enter
+    tmux.until { assert_match(%r{[⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏] 100/100}, _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 }
+    tmux.send_keys :BTab, :BTab, :Up, :BTab
+    tmux.until { |lines| assert_equal 3, lines.select_count }
+    tmux.send_keys 'C-n'
+    tmux.until { |lines| assert_includes lines, '>>4' }
+    tmux.send_keys 'C-n'
+    tmux.until { |lines| assert_includes lines, '>>2' }
+    tmux.send_keys 'C-n'
+    tmux.until { |lines| assert_includes lines, '>>1' }
+    tmux.send_keys 'C-n'
+    tmux.until { |lines| assert_includes lines, '>>4' }
+    tmux.send_keys 'C-p'
+    tmux.until { |lines| assert_includes lines, '>>1' }
+    tmux.send_keys 'C-p'
+    tmux.until { |lines| assert_includes lines, '>>2' }
+  end
+
+  def test_listen
+    { '--listen 6266' => -> { URI('http://localhost:6266') },
+      "--listen --sync --bind 'start:execute-silent:echo $FZF_PORT > /tmp/fzf-port'" =>
+        -> { URI("http://localhost:#{File.read('/tmp/fzf-port').chomp}") } }.each do |opts, fn|
+      tmux.send_keys "seq 10 | fzf #{opts}", :Enter
+      tmux.until { |lines| assert_equal 10, lines.item_count }
+      Net::HTTP.post(fn.call, 'change-query(yo)+reload(seq 100)+change-prompt:hundred> ')
+      tmux.until { |lines| assert_equal 100, lines.item_count }
+      tmux.until { |lines| assert_equal 'hundred> yo', lines[-1] }
+      teardown
+      setup
+    end
+  end
+
+  def test_toggle_alternative_preview_window
+    tmux.send_keys "seq 10 | #{FZF} --bind space:toggle-preview --preview-window '<100000(hidden,up,border-none)' --preview 'echo /{}/{}/'", :Enter
+    tmux.until { |lines| assert_equal 10, lines.item_count }
+    tmux.until { |lines| refute_includes lines, '/1/1/' }
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_includes lines, '/1/1/' }
+  end
+
+  def test_become
+    tmux.send_keys "seq 100 | #{FZF} --bind 'enter:become:seq {} | #{FZF}'", :Enter
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+    tmux.send_keys 999
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.send_keys :Enter
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :Enter
+    tmux.until { |lines| assert_equal 99, lines.item_count }
+  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)
+    expected = <<~OUTPUT
+      ╭──────────
+      │ ─────────
+      │ something
+      │
+      ╰──────────
+        3
+        2
+      > 1
+        100/100 ─
+      >
+    OUTPUT
+    tmux.until { assert_block(expected, _1) }
+  end
+
+  def test_track
+    tmux.send_keys "seq 1000 | #{FZF} --query 555 --track --bind t:toggle-track", :Enter
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert_includes lines, '> 555'
+    end
+    tmux.send_keys :BSpace
+    index = tmux.until do |lines|
+      assert_equal 28, lines.match_count
+      assert_includes lines, '> 555'
+    end.index('> 555')
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 271, lines.match_count
+      assert_equal '> 555', lines[index]
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 1000, lines.match_count
+      assert_equal '> 555', lines[index]
+    end
+    tmux.send_keys '555'
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert_includes lines, '> 555'
+      assert_includes lines[-2], '+T'
+    end
+    tmux.send_keys 't'
+    tmux.until do |lines|
+      refute_includes lines[-2], '+T'
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 28, lines.match_count
+      assert_includes lines, '> 55'
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 271, lines.match_count
+      assert_includes lines, '> 5'
+    end
+    tmux.send_keys 't'
+    tmux.until do |lines|
+      assert_includes lines[-2], '+T'
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 1000, lines.match_count
+      assert_includes lines, '> 5'
+    end
+  end
+
+  def test_track_action
+    tmux.send_keys "seq 1000 | #{FZF} --query 555 --bind t:track", :Enter
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert_includes lines, '> 555'
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 28, lines.match_count
+      assert_includes lines, '> 55'
+    end
+    tmux.send_keys :t
+    tmux.until do |lines|
+      assert_includes lines[-2], '+T'
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 271, lines.match_count
+      assert_includes lines, '> 55'
+    end
+
+    # Automatically disabled when the tracking item is no longer visible
+    tmux.send_keys '4'
+    tmux.until do |lines|
+      assert_equal 28, lines.match_count
+      refute_includes lines[-2], '+T'
+    end
+    tmux.send_keys :BSpace
+    tmux.until do |lines|
+      assert_equal 271, lines.match_count
+      assert_includes lines, '> 5'
+    end
+    tmux.send_keys :t
+    tmux.until do |lines|
+      assert_includes lines[-2], '+T'
+    end
+    tmux.send_keys :Up
+    tmux.until do |lines|
+      refute_includes lines[-2], '+T'
+    end
+  end
+
+  def test_one_and_zero
+    tmux.send_keys "seq 10 | #{FZF} --bind 'zero:preview(echo no match),one:preview(echo {} is the only match)'", :Enter
+    tmux.send_keys '1'
+    tmux.until do |lines|
+      assert_equal 2, lines.match_count
+      refute(lines.any? { _1.include?('only match') })
+      refute(lines.any? { _1.include?('no match') })
+    end
+    tmux.send_keys '0'
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert(lines.any? { _1.include?('only match') })
+    end
+    tmux.send_keys '0'
+    tmux.until do |lines|
+      assert_equal 0, lines.match_count
+      assert(lines.any? { _1.include?('no match') })
+    end
+  end
+
+  def test_height_range_with_exit_0
+    tmux.send_keys "seq 10 | #{FZF} --height ~10% --exit-0", :Enter
+    tmux.until { |lines| assert_equal 10, lines.item_count }
+    tmux.send_keys :c
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+  end
+
+  def test_reload_and_change
+    tmux.send_keys "(echo foo; echo bar) | #{FZF} --bind 'load:reload-sync(sleep 60)+change-query(bar)'", :Enter
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+  end
+
+  def test_reload_and_change_cache
+    tmux.send_keys "echo bar | #{FZF} --bind 'zero:change-header(foo)+reload(echo foo)+clear-query'", :Enter
+    expected = <<~OUTPUT
+      > bar
+        1/1
+      >
+    OUTPUT
+    tmux.until { assert_block(expected, _1) }
+    tmux.send_keys :z
+    expected = <<~OUTPUT
+      > foo
+        foo
+        1/1
+      >
+    OUTPUT
+    tmux.until { assert_block(expected, _1) }
+  end
+
+  def test_delete_with_modifiers
+    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'
+    tmux.until { |lines| assert_equal '[3]', lines[-1] }
+    tmux.send_keys 'S-Delete'
+    tmux.until { |lines| assert_equal '[2]', lines[-1] }
+  end
+
+  def test_become_tty
+    tmux.send_keys "sleep 0.5 | #{FZF} --bind 'start:reload:ls' --bind 'load:become:tty'", :Enter
+    tmux.until { |lines| assert_includes lines, '/dev/tty' }
+  end
+
+  def test_disabled_preview_update
+    tmux.send_keys "echo bar | #{FZF} --disabled --bind 'change:reload:echo foo' --preview 'echo [{q}-{}]'", :Enter
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('[-bar]') }) }
+    tmux.send_keys :x
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('[x-foo]') }) }
+  end
 end
 
 module TestShell
@@ -2474,7 +3023,7 @@ module TestShell
     tmux.prepare
     tmux.send_keys :Escape, :c
     lines = tmux.until { |lines| assert_operator lines.match_count, :>, 0 }
-    expected = lines.reverse.find { |l| l.start_with?('> ') }[2..-1]
+    expected = lines.reverse.find { |l| l.start_with?('> ') }[2..]
     tmux.send_keys :Enter
     tmux.prepare
     tmux.send_keys :pwd, :Enter
@@ -2527,16 +3076,16 @@ module TestShell
 
   def test_ctrl_r_multiline
     tmux.send_keys 'echo "foo', :Enter, 'bar"', :Enter
-    tmux.until { |lines| assert_equal %w[foo bar], lines[-2..-1] }
+    tmux.until { |lines| assert_equal %w[foo bar], lines[-2..] }
     tmux.prepare
     tmux.send_keys 'C-r'
     tmux.until { |lines| assert_equal '>', lines[-1] }
     tmux.send_keys 'foo bar'
-    tmux.until { |lines| assert lines[-3]&.end_with?('bar"') }
+    tmux.until { |lines| assert lines[-3]&.match?(/bar"␊?/) }
     tmux.send_keys :Enter
-    tmux.until { |lines| assert lines[-1]&.end_with?('bar"') }
+    tmux.until { |lines| assert lines[-1]&.match?(/bar"␊?/) }
     tmux.send_keys :Enter
-    tmux.until { |lines| assert_equal %w[foo bar], lines[-2..-1] }
+    tmux.until { |lines| assert_equal %w[foo bar], lines[-2..] }
   end
 
   def test_ctrl_r_abort
@@ -2727,7 +3276,7 @@ module CompletionTest
     tmux.send_keys :Enter
     tmux.until(true) { |lines| assert_match(/cat .*fzf-unicode.*1.* .*fzf-unicode.*2/, lines[-1]) }
     tmux.send_keys :Enter
-    tmux.until { |lines| assert_equal %w[test3 test4], lines[-2..-1] }
+    tmux.until { |lines| assert_equal %w[test3 test4], lines[-2..] }
   end
 
   def test_custom_completion_api
@@ -2817,7 +3366,7 @@ class TestFish < TestBase
   end
 
   def new_shell
-    tmux.send_keys 'env FZF_TMUX=1 fish', :Enter
+    tmux.send_keys 'env FZF_TMUX=1 FZF_DEFAULT_OPTS=--no-scrollbar fish', :Enter
     tmux.send_keys 'function fish_prompt; end; clear', :Enter
     tmux.until { |lines| assert_empty lines }
   end
@@ -2836,6 +3385,8 @@ unset <%= UNSETS.join(' ') %>
 unset $(env | sed -n /^_fzf_orig/s/=.*//p)
 unset $(declare -F | sed -n "/_fzf/s/.*-f //p")
 
+export FZF_DEFAULT_OPTS=--no-scrollbar
+
 # Setup fzf
 # ---------
 if [[ ! "$PATH" == *<%= BASE %>/bin* ]]; then

typos.toml

@@ -0,0 +1,6 @@
+# See https://github.com/crate-ci/typos/blob/master/docs/reference.md to configure typos
+[default.extend-words]
+ba = "ba"
+fo = "fo"
+enew = "enew"
+tabe = "tabe"