0.24.4

Close #2270

.travis.yml

@@ -6,6 +6,7 @@ os:
   - linux
   - osx
 dist: bionic
+osx_image: xcode12.2
 addons:
   apt:
     packages:
@@ -17,7 +18,6 @@ addons:
     packages:
       - fish
       - tmux
-    update: true
 install: gem install --no-document minitest:5.14.2 rubocop:1.0.0 rubocop-minitest:0.10.1 rubocop-performance:1.8.1
 script:
   - make test

CHANGELOG.md

@@ -1,6 +1,35 @@
 CHANGELOG
 =========
 
+0.24.4
+------
+- Added `--preview-window` option `follow`
+  ```sh
+  # Preview window will automatically scroll to the bottom
+  fzf --preview-window follow --preview 'for i in $(seq 100000); do
+    echo "$i"
+    sleep 0.01
+    (( i % 300 == 0 )) && printf "\033[2J"
+  done'
+  ```
+- Added `change-prompt` action
+  ```sh
+  fzf --prompt 'foo> ' --bind $'a:change-prompt:\x1b[31mbar> '
+  ```
+- Bug fixes and improvements
+
+0.24.3
+------
+- Added `--padding` option
+  ```sh
+  fzf --margin 5% --padding 5% --border --preview 'cat {}' \
+      --color bg:#222222,preview-bg:#333333
+  ```
+
+0.24.2
+------
+- Bug fixes and improvements
+
 0.24.1
 ------
 - Fixed broken `--color=[bw|no]` option

install

@@ -2,7 +2,7 @@
 
 set -u
 
-version=0.24.1
+version=0.24.4
 auto_completion=
 key_bindings=
 update_config=2

install.ps1

@@ -1,4 +1,4 @@
-$version="0.24.1"
+$version="0.24.4"
 
 $fzf_base=Split-Path -Parent $MyInvocation.MyCommand.Definition
 

man/man1/fzf-tmux.1

@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf-tmux 1 "Oct 2020" "fzf 0.24.1" "fzf-tmux - open fzf in tmux split pane"
+.TH fzf-tmux 1 "Dec 2020" "fzf 0.24.4" "fzf-tmux - open fzf in tmux split pane"
 
 .SH NAME
 fzf-tmux - open fzf in tmux split pane

man/man1/fzf.1

@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf 1 "Oct 2020" "fzf 0.24.1" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "Dec 2020" "fzf 0.24.4" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -233,6 +233,29 @@ e.g.
      \fBfzf --margin 10%
      fzf --margin 1,5%\fR
 .RE
+.TP
+.BI "--padding=" PADDING
+Comma-separated expression for padding inside the border. Padding is
+distinguishable from margin only when \fB--border\fR option is used.
+.br
+
+.br
+e.g.
+     \fBfzf --margin 5% --padding 5% --border --preview 'cat {}' \\
+         --color bg:#222222,preview-bg:#333333\fR
+
+.br
+.RS
+.BR TRBL "     Same padding for top, right, bottom, and left"
+.br
+.BR TB,RL "    Vertical, horizontal padding"
+.br
+.BR T,RL,B "   Top, horizontal, bottom padding"
+.br
+.BR T,R,B,L "  Top, right, bottom, left padding"
+.br
+.RE
+
 .TP
 .BI "--info=" "STYLE"
 Determines the display style of finder info.
@@ -416,7 +439,7 @@ e.g.
       done'\fR
 .RE
 .TP
-.BI "--preview-window=" "[POSITION][:SIZE[%]][:rounded|sharp|noborder][:[no]wrap][:[no]cycle][:[no]hidden][:+SCROLL[-OFFSET]][:default]"
+.BI "--preview-window=" "[POSITION][:SIZE[%]][:rounded|sharp|noborder][:[no]wrap][:[no]follow][:[no]cycle][:[no]hidden][:+SCROLL[-OFFSET]][:default]"
 
 .RS
 .B POSITION: (default: right)
@@ -425,27 +448,43 @@ e.g.
     \fBleft
     \fBright
 
-\fRDetermines the layout of the preview window. If the argument contains
+\fRDetermines the layout of the preview window.
-\fB:hidden\fR, the preview window will be hidden by default until
-\fBtoggle-preview\fR action is triggered. Long lines are truncated by default.
-Line wrap can be enabled with \fB:wrap\fR flag. Cyclic scrolling is enabled
-with \fB:cycle\fR flag.
 
-If size is given as 0, preview window will not be visible, but fzf will still
+* If the argument contains \fB:hidden\fR, the preview window will be hidden by
+default until \fBtoggle-preview\fR action is triggered.
+
+* If size is given as 0, preview window will not be visible, but fzf will still
 execute the command in the background.
 
-To change the style of the border of the preview window, specify one of
+* Long lines are truncated by default. Line wrap can be enabled with
+\fB:wrap\fR flag.
+
+* Preview window will automatically scroll to the bottom when \fB:follow\fR
+flag is set, similarly to how \fBtail -f\fR works.
+
+.RS
+e.g.
+      \fBfzf --preview-window follow --preview 'for i in $(seq 100000); do
+        echo "$i"
+        sleep 0.01
+        (( i % 300 == 0 )) && printf "\\033[2J"
+      done'\fR
+.RE
+
+* Cyclic scrolling is enabled with \fB:cycle\fR flag.
+
+* To change the style of the border of the preview window, specify one of
 \fBrounded\fR (border with rounded edges, default), \fBsharp\fR (border with
 sharp edges), or \fBnoborder\fR (no border).
 
-\fB+SCROLL[-OFFSET]\fR determines the initial scroll offset of the preview
+* \fB+SCROLL[-OFFSET]\fR determines the initial scroll offset of the preview
 window. \fBSCROLL\fR can be either a numeric integer or a single-field index
 expression that refers to a numeric integer. The optional \fB-OFFSET\fR part is
 for adjusting the base offset so that you can see the text above it. It should
 be given as a numeric integer (\fB-INTEGER\fR), or as a denominator form
 (\fB-/INTEGER\fR) for specifying a fraction of the preview window height.
 
-\fBdefault\fR resets all options previously set to the default.
+* \fBdefault\fR resets all options previously set to the default.
 
 .RS
 e.g.
@@ -689,6 +728,14 @@ e.g.
 .br
 \fIshift-right\fR
 .br
+\fIalt-shift-up\fR
+.br
+\fIalt-shift-down\fR
+.br
+\fIalt-shift-left\fR
+.br
+\fIalt-shift-right\fR
+.br
 \fIleft-click\fR
 .br
 \fIright-click\fR
@@ -730,6 +777,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBbackward-word\fR             \fIalt-b   shift-left\fR
     \fBbeginning-of-line\fR         \fIctrl-a  home\fR
     \fBcancel\fR                    (clear query string if not empty, abort fzf otherwise)
+    \fBchange-prompt(...)\fR        (change prompt to the given string)
     \fBclear-screen\fR              \fIctrl-l\fR
     \fBclear-selection\fR           (clear multi-selection)
     \fBclear-query\fR               (clear query string)
@@ -785,7 +833,40 @@ A key or an event can be bound to one or more of the following actions.
 Multiple actions can be chained using \fB+\fR separator.
 
 e.g.
-     \fBfzf --bind 'ctrl-a:select-all+accept'\fR
+     \fBfzf --multi --bind 'ctrl-a:select-all+accept'\fR
+     \fBfzf --multi --bind 'ctrl-a:select-all' --bind 'ctrl-a:+accept'\fR
+
+.SS ACTION ARGUMENT
+
+An action denoted with \fB(...)\fR suffix takes an argument.
+
+e.g.
+     \fBfzf --bind 'ctrl-a:change-prompt(NewPrompt> )'\fR
+     \fBfzf --bind 'ctrl-v:preview(cat {})' --preview-window hidden\fR
+
+If the argument contains parentheses, fzf may fail to parse the expression. In
+that case, you can use any of the following alternative notations to avoid
+parse errors.
+
+    \fBaction-name[...]\fR
+    \fBaction-name~...~\fR
+    \fBaction-name!...!\fR
+    \fBaction-name@...@\fR
+    \fBaction-name#...#\fR
+    \fBaction-name$...$\fR
+    \fBaction-name%...%\fR
+    \fBaction-name^...^\fR
+    \fBaction-name&...&\fR
+    \fBaction-name*...*\fR
+    \fBaction-name;...;\fR
+    \fBaction-name/.../\fR
+    \fBaction-name|...|\fR
+    \fBaction-name:...\fR
+.RS
+The last one is the special form that frees you from parse errors as it does
+not expect the closing character. The catch is that it should be the last one
+in the comma-separated list of key-action pairs.
+.RE
 
 .SS COMMAND EXECUTION
 
@@ -797,30 +878,6 @@ binding \fBenter\fR key to \fBless\fR command like follows.
 
 You can use the same placeholder expressions as in \fB--preview\fR.
 
-If the command contains parentheses, fzf may fail to parse the expression. In
-that case, you can use any of the following alternative notations to avoid
-parse errors.
-
-    \fBexecute[...]\fR
-    \fBexecute~...~\fR
-    \fBexecute!...!\fR
-    \fBexecute@...@\fR
-    \fBexecute#...#\fR
-    \fBexecute$...$\fR
-    \fBexecute%...%\fR
-    \fBexecute^...^\fR
-    \fBexecute&...&\fR
-    \fBexecute*...*\fR
-    \fBexecute;...;\fR
-    \fBexecute/.../\fR
-    \fBexecute|...|\fR
-    \fBexecute:...\fR
-.RS
-The last one is the special form that frees you from parse errors as it does
-not expect the closing character. The catch is that it should be the last one
-in the comma-separated list of key-action pairs.
-.RE
-
 fzf switches to the alternate screen when executing a command. However, if the
 command is expected to complete quickly, and you are not interested in its
 output, you might want to use \fBexecute-silent\fR instead, which silently

plugin/fzf.vim

@@ -189,7 +189,7 @@ function! fzf#exec(...)
     if v:shell_error || empty(output)
       throw printf('Failed to run "%s": %s', command, output)
     endif
-    let fzf_version = matchstr(output[0], '[0-9.]\+')
+    let fzf_version = matchstr(output[-1], '[0-9.]\+')
     if s:version_requirement(fzf_version, a:1)
       let s:checked[a:1] = 1
       return s:exec
@@ -283,7 +283,8 @@ function! s:common_sink(action, lines) abort
     let cwd = exists('w:fzf_pushd') ? w:fzf_pushd.dir : expand('%:p:h')
     for item in a:lines
       if item[0] != '~' && item !~ (s:is_win ? '^[A-Z]:\' : '^/')
-        let item = join([cwd, item], (s:is_win ? '\' : '/'))
+        let sep = s:is_win ? '\' : '/'
+        let item = join([cwd, item], cwd[len(cwd)-1] == sep ? '' : sep)
       endif
       if empty
         execute 'e' s:escape(item)
@@ -644,7 +645,8 @@ function! s:execute(dict, command, use_height, temps) abort
   endif
   let exit_status = v:shell_error
   redraw!
-  return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
+  let lines = s:collect(a:temps)
+  return s:exit_handler(exit_status, command) ? lines : []
 endfunction
 
 function! s:execute_tmux(dict, command, temps) abort
@@ -658,7 +660,8 @@ function! s:execute_tmux(dict, command, temps) abort
   call system(command)
   let exit_status = v:shell_error
   redraw!
-  return s:exit_handler(exit_status, command) ? s:collect(a:temps) : []
+  let lines = s:collect(a:temps)
+  return s:exit_handler(exit_status, command) ? lines : []
 endfunction
 
 function! s:calc_size(max, val, dict)
@@ -805,12 +808,12 @@ function! s:execute_term(dict, command, temps) abort
       execute self.winrest
     endif
 
+    let lines = s:collect(self.temps)
     if !s:exit_handler(a:code, self.command, 1)
       return
     endif
 
     call s:pushd(self.dict)
-    let lines = s:collect(self.temps)
     call s:callback(self.dict, lines)
     call self.switch_back(s:getpos() == self.ppos)
   endfunction
@@ -835,6 +838,9 @@ function! s:execute_term(dict, command, temps) abort
         let term_opts.curwin = 1
       endif
       let fzf.buf = term_start([&shell, &shellcmdflag, command], term_opts)
+      if exists('&termwinkey')
+        call setbufvar(fzf.buf, '&termwinkey', '<c-z>')
+      endif
       if is_popup && exists('#TerminalWinOpen')
         doautocmd <nomodeline> TerminalWinOpen
       endif
@@ -842,6 +848,7 @@ function! s:execute_term(dict, command, temps) abort
         call term_wait(fzf.buf, 20)
       endif
     endif
+    tnoremap <buffer> <c-z> <nop>
   finally
     call s:dopopd()
   endtry
@@ -908,23 +915,16 @@ if has('nvim')
   endfunction
 else
   function! s:create_popup(hl, opts) abort
-    let is_frame = has_key(a:opts, 'border')
     let s:popup_create = {buf -> popup_create(buf, #{
       \ line: a:opts.row,
       \ col: a:opts.col,
       \ minwidth: a:opts.width,
+      \ maxwidth: a:opts.width,
       \ minheight: a:opts.height,
-      \ zindex: 50 - is_frame,
+      \ maxheight: a:opts.height,
+      \ zindex: 1000,
     \ })}
-    if is_frame
+    autocmd TerminalOpen * ++once call s:popup_create(str2nr(expand('<abuf>')))
-      let id = s:popup_create('')
-      call setwinvar(id, '&wincolor', a:hl)
-      call setbufline(winbufnr(id), 1, a:opts.border)
-      execute 'autocmd BufWipeout * ++once call popup_close('..id..')'
-      return winbufnr(id)
-    else
-      autocmd TerminalOpen * ++once call s:popup_create(str2nr(expand('<abuf>')))
-    endif
   endfunction
 endif
 

shell/completion.bash

@@ -46,9 +46,20 @@ __fzf_comprun() {
   fi
 }
 
-__fzf_orig_completion_filter() {
+__fzf_orig_completion() {
-  sed 's/^\(.*-F\) *\([^ ]*\).* \([^ ]*\)$/export _fzf_orig_completion_\3="\1 %s \3 #\2"; [[ "\1" = *" -o nospace "* ]] \&\& [[ ! "$__fzf_nospace_commands" = *" \3 "* ]] \&\& __fzf_nospace_commands="$__fzf_nospace_commands \3 ";/' |
+  local l comp f cmd
-  awk -F= '{OFS = FS} {gsub(/[^A-Za-z0-9_= ;]/, "_", $1);}1'
+  while read -r l; do
+    if [[ "$l" =~ ^(.*\ -F)\ *([^ ]*).*\ ([^ ]*)$ ]]; then
+      comp="${BASH_REMATCH[1]}"
+      f="${BASH_REMATCH[2]}"
+      cmd="${BASH_REMATCH[3]}"
+      [[ "$f" = _fzf_* ]] && continue
+      printf -v "_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}" "%s" "${comp} %s ${cmd} #${f}"
+      if [[ "$l" = *" -o nospace "* ]] && [[ ! "$__fzf_nospace_commands" = *" $cmd "* ]]; then
+        __fzf_nospace_commands="$__fzf_nospace_commands $cmd "
+      fi
+    fi
+  done
 }
 
 _fzf_opts_completion() {
@@ -137,7 +148,7 @@ _fzf_handle_dynamic_completion() {
     ret=$?
     # _completion_loader may not have updated completion for the command
     if [ "$(complete -p "$orig_cmd" 2> /dev/null)" != "$orig_complete" ]; then
-      eval "$(complete | command grep " -F.* $orig_cmd$" | __fzf_orig_completion_filter)"
+      __fzf_orig_completion < <(complete -p "$orig_cmd" 2> /dev/null)
       if [[ "$__fzf_nospace_commands" = *" $orig_cmd "* ]]; then
         eval "${orig_complete/ -F / -o nospace -F }"
       else
@@ -306,9 +317,7 @@ a_cmds="
   svn tar unzip zip"
 
 # Preserve existing completion
-eval "$(complete |
+__fzf_orig_completion < <(complete -p $d_cmds $a_cmds 2> /dev/null)
-  sed -E '/-F/!d; / _fzf/d; '"/ ($(echo $d_cmds $a_cmds | sed 's/ /|/g; s/+/\\+/g'))$/"'!d' |
-  __fzf_orig_completion_filter)"
 
 if type _completion_loader > /dev/null 2>&1; then
   _fzf_completion_loader=1
@@ -353,7 +362,7 @@ _fzf_setup_completion() {
     return 1
   fi
   shift
-  eval "$(complete -p "$@" 2> /dev/null | grep -v "$fn" | __fzf_orig_completion_filter)"
+  __fzf_orig_completion < <(complete -p "$@" 2> /dev/null)
   for cmd in "$@"; do
     case "$kind" in
       dir)   __fzf_defc "$cmd" "$fn" "-o nospace -o dirnames" ;;

shell/key-bindings.zsh

@@ -45,6 +45,7 @@ __fsel() {
     -o -type d -print \
     -o -type l -print 2> /dev/null | cut -b3-"}"
   setopt localoptions pipefail no_aliases 2> /dev/null
+  local item
   eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS" $(__fzfcmd) -m "$@" | while read item; do
     echo -n "${(q)item} "
   done
@@ -106,6 +107,7 @@ bindkey '\ec' fzf-cd-widget
 fzf-history-widget() {
   local selected num
   setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases 2> /dev/null
+  [[ -o sharehistory ]] && fc -RI
   selected=( $(fc -rl 1 | perl -ne 'print if !$seen{(/^\s*[0-9]+\**\s+(.*)/, $1)}++' |
     FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort $FZF_CTRL_R_OPTS --query=${(qqq)LBUFFER} +m" $(__fzfcmd)) )
   local ret=$?

src/ansi.go

@@ -19,17 +19,18 @@ type ansiState struct {
 	fg   tui.Color
 	bg   tui.Color
 	attr tui.Attr
+	lbg  tui.Color
 }
 
 func (s *ansiState) colored() bool {
-	return s.fg != -1 || s.bg != -1 || s.attr > 0
+	return s.fg != -1 || s.bg != -1 || s.attr > 0 || s.lbg >= 0
 }
 
 func (s *ansiState) equals(t *ansiState) bool {
 	if t == nil {
 		return !s.colored()
 	}
-	return s.fg == t.fg && s.bg == t.bg && s.attr == t.attr
+	return s.fg == t.fg && s.bg == t.bg && s.attr == t.attr && s.lbg == t.lbg
 }
 
 func (s *ansiState) ToString() string {
@@ -195,11 +196,14 @@ func interpretCode(ansiCode string, prevState *ansiState) *ansiState {
 	// State
 	var state *ansiState
 	if prevState == nil {
-		state = &ansiState{-1, -1, 0}
+		state = &ansiState{-1, -1, 0, -1}
 	} else {
-		state = &ansiState{prevState.fg, prevState.bg, prevState.attr}
+		state = &ansiState{prevState.fg, prevState.bg, prevState.attr, prevState.lbg}
 	}
 	if ansiCode[0] != '\x1b' || ansiCode[1] != '[' || ansiCode[len(ansiCode)-1] != 'm' {
+		if strings.HasSuffix(ansiCode, "0K") {
+			state.lbg = prevState.bg
+		}
 		return state
 	}
 

src/ansi_test.go

@@ -168,7 +168,7 @@ func TestAnsiCodeStringConversion(t *testing.T) {
 		}
 	}
 	assert("\x1b[m", nil, "")
-	assert("\x1b[m", &ansiState{attr: tui.Blink}, "")
+	assert("\x1b[m", &ansiState{attr: tui.Blink, lbg: -1}, "")
 
 	assert("\x1b[31m", nil, "\x1b[31;49m")
 	assert("\x1b[41m", nil, "\x1b[39;41m")
@@ -176,8 +176,8 @@ func TestAnsiCodeStringConversion(t *testing.T) {
 	assert("\x1b[92m", nil, "\x1b[92;49m")
 	assert("\x1b[102m", nil, "\x1b[39;102m")
 
-	assert("\x1b[31m", &ansiState{fg: 4, bg: 4}, "\x1b[31;44m")
+	assert("\x1b[31m", &ansiState{fg: 4, bg: 4, lbg: -1}, "\x1b[31;44m")
-	assert("\x1b[1;2;31m", &ansiState{fg: 2, bg: -1, attr: tui.Reverse}, "\x1b[1;2;7;31;49m")
+	assert("\x1b[1;2;31m", &ansiState{fg: 2, bg: -1, attr: tui.Reverse, lbg: -1}, "\x1b[1;2;7;31;49m")
 	assert("\x1b[38;5;100;48;5;200m", nil, "\x1b[38;5;100;48;5;200m")
 	assert("\x1b[48;5;100;38;5;200m", nil, "\x1b[38;5;200;48;5;100m")
 	assert("\x1b[48;5;100;38;2;10;20;30;1m", nil, "\x1b[1;38;2;10;20;30;48;5;100m")

src/options.go

@@ -60,7 +60,8 @@ const usage = `usage: fzf [options]
     --border[=STYLE]      Draw border around the finder
                           [rounded|sharp|horizontal|vertical|
                            top|bottom|left|right] (default: rounded)
-    --margin=MARGIN       Screen margin (TRBL / TB,RL / T,RL,B / T,R,B,L)
+    --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]
     --prompt=STR          Input prompt (default: '> ')
     --pointer=STR         Pointer to the current line (default: '>')
@@ -82,7 +83,7 @@ const usage = `usage: fzf [options]
     --preview=COMMAND     Command to preview highlighted line ({})
     --preview-window=OPT  Preview window layout (default: right:50%)
                           [up|down|left|right][:SIZE[%]]
-                          [:[no]wrap][:[no]cycle][:[no]hidden]
+                          [:[no]wrap][:[no]cycle][:[no]follow][:[no]hidden]
                           [:rounded|sharp|noborder]
                           [:+SCROLL[-OFFSET]]
                           [:default]
@@ -168,6 +169,7 @@ type previewOpts struct {
 	hidden   bool
 	wrap     bool
 	cycle    bool
+	follow   bool
 	border   tui.BorderShape
 }
 
@@ -221,6 +223,7 @@ type Options struct {
 	Header      []string
 	HeaderLines int
 	Margin      [4]sizeSpec
+	Padding     [4]sizeSpec
 	BorderShape tui.BorderShape
 	Unicode     bool
 	Tabstop     int
@@ -229,7 +232,7 @@ type Options struct {
 }
 
 func defaultPreviewOpts(command string) previewOpts {
-	return previewOpts{command, posRight, sizeSpec{50, true}, "", false, false, false, tui.BorderRounded}
+	return previewOpts{command, posRight, sizeSpec{50, true}, "", false, false, false, false, tui.BorderRounded}
 }
 
 func defaultOptions() *Options {
@@ -281,6 +284,7 @@ func defaultOptions() *Options {
 		Header:      make([]string, 0),
 		HeaderLines: 0,
 		Margin:      defaultMargin(),
+		Padding:     defaultMargin(),
 		Unicode:     true,
 		Tabstop:     8,
 		ClearOnExit: true,
@@ -521,6 +525,14 @@ func parseKeyChords(str string, message string) map[int]string {
 			chord = tui.PgUp
 		case "pgdn", "page-down":
 			chord = tui.PgDn
+		case "alt-shift-up", "shift-alt-up":
+			chord = tui.AltSUp
+		case "alt-shift-down", "shift-alt-down":
+			chord = tui.AltSDown
+		case "alt-shift-left", "shift-alt-left":
+			chord = tui.AltSLeft
+		case "alt-shift-right", "shift-alt-right":
+			chord = tui.AltSRight
 		case "shift-up":
 			chord = tui.SUp
 		case "shift-down":
@@ -724,7 +736,7 @@ 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):.+|[:+](execute(?:-multi|-silent)?|reload|preview)(\([^)]*\)|\[[^\]]*\]|~[^~]*~|![^!]*!|@[^@]*@|\#[^\#]*\#|\$[^\$]*\$|%[^%]*%|\^[^\^]*\^|&[^&]*&|\*[^\*]*\*|;[^;]*;|/[^/]*/|\|[^\|]*\|)`)
+		`(?si)[:+](execute(?:-multi|-silent)?|reload|preview|change-prompt):.+|[:+](execute(?:-multi|-silent)?|reload|preview|change-prompt)(\([^)]*\)|\[[^\]]*\]|~[^~]*~|![^!]*!|@[^@]*@|\#[^\#]*\#|\$[^\$]*\$|%[^%]*%|\^[^\^]*\^|&[^&]*&|\*[^\*]*\*|;[^;]*;|/[^/]*/|\|[^\|]*\|)`)
 }
 
 func parseKeymap(keymap map[int][]action, str string) {
@@ -738,6 +750,8 @@ func parseKeymap(keymap map[int][]action, str string) {
 			prefix = symbol + "reload"
 		} else if strings.HasPrefix(src[1:], "preview") {
 			prefix = symbol + "preview"
+		} 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' {
@@ -911,6 +925,8 @@ func parseKeymap(keymap map[int][]action, str string) {
 						offset = len("reload")
 					case actPreview:
 						offset = len("preview")
+					case actChangePrompt:
+						offset = len("change-prompt")
 					case actExecuteSilent:
 						offset = len("execute-silent")
 					case actExecuteMulti:
@@ -950,6 +966,8 @@ func isExecuteAction(str string) actionType {
 		return actReload
 	case "preview":
 		return actPreview
+	case "change-prompt":
+		return actChangePrompt
 	case "execute":
 		return actExecute
 	case "execute-silent":
@@ -1064,6 +1082,10 @@ func parsePreviewWindow(opts *previewOpts, input string) {
 			opts.border = tui.BorderSharp
 		case "noborder":
 			opts.border = tui.BorderNone
+		case "follow":
+			opts.follow = true
+		case "nofollow":
+			opts.follow = false
 		default:
 			if sizeRegex.MatchString(token) {
 				opts.size = parseSize(token, 99, "window size")
@@ -1076,10 +1098,10 @@ func parsePreviewWindow(opts *previewOpts, input string) {
 	}
 }
 
-func parseMargin(margin string) [4]sizeSpec {
+func parseMargin(opt string, margin string) [4]sizeSpec {
 	margins := strings.Split(margin, ",")
 	checked := func(str string) sizeSpec {
-		return parseSize(str, 49, "margin")
+		return parseSize(str, 49, opt)
 	}
 	switch len(margins) {
 	case 1:
@@ -1099,7 +1121,7 @@ func parseMargin(margin string) [4]sizeSpec {
 			checked(margins[0]), checked(margins[1]),
 			checked(margins[2]), checked(margins[3])}
 	default:
-		errorExit("invalid margin: " + margin)
+		errorExit("invalid " + opt + ": " + margin)
 	}
 	return defaultMargin()
 }
@@ -1324,6 +1346,8 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.Height = sizeSpec{}
 		case "--no-margin":
 			opts.Margin = defaultMargin()
+		case "--no-padding":
+			opts.Padding = defaultMargin()
 		case "--no-border":
 			opts.BorderShape = tui.BorderNone
 		case "--border":
@@ -1335,7 +1359,12 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.Unicode = true
 		case "--margin":
 			opts.Margin = parseMargin(
+				"margin",
 				nextString(allArgs, &i, "margin required (TRBL / TB,RL / T,RL,B / T,R,B,L)"))
+		case "--padding":
+			opts.Padding = parseMargin(
+				"padding",
+				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 "--clear":
@@ -1404,7 +1433,9 @@ func parseOptions(opts *Options, allArgs []string) {
 			} else if match, value := optString(arg, "--preview-window="); match {
 				parsePreviewWindow(&opts.Preview, value)
 			} else if match, value := optString(arg, "--margin="); match {
-				opts.Margin = parseMargin(value)
+				opts.Margin = parseMargin("margin", value)
+			} else if match, value := optString(arg, "--padding="); match {
+				opts.Padding = parseMargin("padding", value)
 			} else if match, value := optString(arg, "--tabstop="); match {
 				opts.Tabstop = atoi(value)
 			} else if match, value := optString(arg, "--hscroll-off="); match {

src/result.go

@@ -160,7 +160,19 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 				color := colMatch
 				if curr < -1 && theme.Colored {
 					origColor := ansiToColorPair(itemColors[-curr-2], colMatch)
-					color = origColor.MergeNonDefault(color)
+					// hl or hl+ only sets the foreground color, so colMatch is the
+					// combination of either [hl and bg] or [hl+ and bg+].
+					//
+					// If the original text already has background color, and the
+					// forground color of colMatch is -1, we shouldn't only apply the
+					// background color of colMatch.
+					// e.g. echo -e "\x1b[32;7mfoo\x1b[mbar" | fzf --ansi --color bg+:1,hl+:-1:underline
+					//      echo -e "\x1b[42mfoo\x1b[mbar" | fzf --ansi --color bg+:1,hl+:-1:underline
+					if color.Fg().IsDefault() && origColor.HasBg() {
+						color = origColor
+					} else {
+						color = origColor.MergeNonDefault(color)
+					}
 				}
 				colors = append(colors, colorOffset{
 					offset: [2]int32{int32(start), int32(idx)}, color: color})

src/result_test.go

@@ -109,10 +109,10 @@ func TestColorOffset(t *testing.T) {
 	item := Result{
 		item: &Item{
 			colors: &[]ansiOffset{
-				{[2]int32{0, 20}, ansiState{1, 5, 0}},
+				{[2]int32{0, 20}, ansiState{1, 5, 0, -1}},
-				{[2]int32{22, 27}, ansiState{2, 6, tui.Bold}},
+				{[2]int32{22, 27}, ansiState{2, 6, tui.Bold, -1}},
-				{[2]int32{30, 32}, ansiState{3, 7, 0}},
+				{[2]int32{30, 32}, ansiState{3, 7, 0, -1}},
-				{[2]int32{33, 40}, ansiState{4, 8, tui.Bold}}}}}
+				{[2]int32{33, 40}, ansiState{4, 8, tui.Bold, -1}}}}}
 
 	colBase := tui.NewColorPair(89, 189, tui.AttrUndefined)
 	colMatch := tui.NewColorPair(99, 199, tui.AttrUndefined)

src/terminal.go

@@ -51,6 +51,7 @@ type previewer struct {
 	enabled    bool
 	scrollable bool
 	final      bool
+	following  bool
 	spinner    string
 }
 
@@ -119,6 +120,7 @@ type Terminal struct {
 	ansi         bool
 	tabstop      int
 	margin       [4]sizeSpec
+	padding      [4]sizeSpec
 	strong       tui.Attr
 	unicode      bool
 	borderShape  tui.BorderShape
@@ -139,7 +141,7 @@ type Terminal struct {
 	selected     map[int32]selectedItem
 	version      int64
 	reqBox       *util.EventBox
-	preview      previewOpts
+	previewOpts  previewOpts
 	previewer    previewer
 	previewed    previewed
 	previewBox   *util.EventBox
@@ -213,6 +215,7 @@ const (
 	actBackwardDeleteCharEOF
 	actBackwardWord
 	actCancel
+	actChangePrompt
 	actClearScreen
 	actClearQuery
 	actClearSelection
@@ -472,6 +475,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		printQuery:  opts.PrintQuery,
 		history:     opts.History,
 		margin:      opts.Margin,
+		padding:     opts.Padding,
 		unicode:     opts.Unicode,
 		borderShape: opts.BorderShape,
 		cleanExit:   opts.ClearOnExit,
@@ -490,8 +494,8 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		merger:      EmptyMerger,
 		selected:    make(map[int32]selectedItem),
 		reqBox:      util.NewEventBox(),
-		preview:     opts.Preview,
+		previewOpts: opts.Preview,
-		previewer:   previewer{0, []string{}, 0, previewBox != nil && !opts.Preview.hidden, false, true, ""},
+		previewer:   previewer{0, []string{}, 0, previewBox != nil && !opts.Preview.hidden, false, true, false, ""},
 		previewed:   previewed{0, 0, 0, false},
 		previewBox:  previewBox,
 		eventBox:    eventBox,
@@ -523,10 +527,9 @@ func (t *Terminal) parsePrompt(prompt string) (func(), int) {
 	//             // unless the part has a non-default ANSI state
 	loc := whiteSuffix.FindStringIndex(trimmed)
 	if loc != nil {
-		blankState := ansiOffset{[2]int32{int32(loc[0]), int32(loc[1])}, ansiState{-1, -1, tui.AttrClear}}
+		blankState := ansiOffset{[2]int32{int32(loc[0]), int32(loc[1])}, ansiState{-1, -1, tui.AttrClear, -1}}
 		if item.colors != nil {
 			lastColor := (*item.colors)[len(*item.colors)-1]
-			fmt.Println(lastColor.offset[1], int32(loc[1]))
 			if lastColor.offset[1] < int32(loc[1]) {
 				blankState.offset[0] = lastColor.offset[1]
 				colors := append(*item.colors, blankState)
@@ -653,10 +656,8 @@ func (t *Terminal) displayWidth(runes []rune) int {
 }
 
 const (
-	minWidth  = 16
+	minWidth  = 4
 	minHeight = 4
-
-	maxDisplayWidthCalc = 1024
 )
 
 func calculateSize(base int, size sizeSpec, occupied int, minSize int, pad int) int {
@@ -670,61 +671,73 @@ func calculateSize(base int, size sizeSpec, occupied int, minSize int, pad int)
 func (t *Terminal) resizeWindows() {
 	screenWidth := t.tui.MaxX()
 	screenHeight := t.tui.MaxY()
-	marginInt := [4]int{} // TRBL
 	t.prevLines = make([]itemLine, screenHeight)
-	for idx, sizeSpec := range t.margin {
+
-		if sizeSpec.percent {
+	marginInt := [4]int{}  // TRBL
+	paddingInt := [4]int{} // TRBL
+	sizeSpecToInt := func(index int, spec sizeSpec) int {
+		if spec.percent {
 			var max float64
-			if idx%2 == 0 {
+			if index%2 == 0 {
 				max = float64(screenHeight)
 			} else {
 				max = float64(screenWidth)
 			}
-			marginInt[idx] = int(max * sizeSpec.size * 0.01)
+			return int(max * spec.size * 0.01)
-		} else {
-			marginInt[idx] = int(sizeSpec.size)
 		}
+		return int(spec.size)
+	}
+	for idx, sizeSpec := range t.padding {
+		paddingInt[idx] = sizeSpecToInt(idx, sizeSpec)
+	}
+
+	extraMargin := [4]int{} // TRBL
+	for idx, sizeSpec := range t.margin {
 		switch t.borderShape {
 		case tui.BorderHorizontal:
-			marginInt[idx] += 1 - idx%2
+			extraMargin[idx] += 1 - idx%2
 		case tui.BorderVertical:
-			marginInt[idx] += 2 * (idx % 2)
+			extraMargin[idx] += 2 * (idx % 2)
 		case tui.BorderTop:
 			if idx == 0 {
-				marginInt[idx]++
+				extraMargin[idx]++
 			}
 		case tui.BorderRight:
 			if idx == 1 {
-				marginInt[idx] += 2
+				extraMargin[idx] += 2
 			}
 		case tui.BorderBottom:
 			if idx == 2 {
-				marginInt[idx]++
+				extraMargin[idx]++
 			}
 		case tui.BorderLeft:
 			if idx == 3 {
-				marginInt[idx] += 2
+				extraMargin[idx] += 2
 			}
 		case tui.BorderRounded, tui.BorderSharp:
-			marginInt[idx] += 1 + idx%2
+			extraMargin[idx] += 1 + idx%2
 		}
+		marginInt[idx] = sizeSpecToInt(idx, sizeSpec) + extraMargin[idx]
 	}
+
 	adjust := func(idx1 int, idx2 int, max int, min int) {
 		if max >= min {
-			margin := marginInt[idx1] + marginInt[idx2]
+			margin := marginInt[idx1] + marginInt[idx2] + paddingInt[idx1] + paddingInt[idx2]
 			if max-margin < min {
 				desired := max - min
-				marginInt[idx1] = desired * marginInt[idx1] / margin
+				paddingInt[idx1] = desired * paddingInt[idx1] / margin
-				marginInt[idx2] = desired * marginInt[idx2] / margin
+				paddingInt[idx2] = desired * paddingInt[idx2] / margin
+				marginInt[idx1] = util.Max(extraMargin[idx1], desired*marginInt[idx1]/margin)
+				marginInt[idx2] = util.Max(extraMargin[idx2], desired*marginInt[idx2]/margin)
 			}
 		}
 	}
 
-	previewVisible := t.isPreviewEnabled() && t.preview.size.size > 0
+	previewVisible := t.isPreviewEnabled() && t.previewOpts.size.size > 0
 	minAreaWidth := minWidth
 	minAreaHeight := minHeight
 	if previewVisible {
-		switch t.preview.position {
+		switch t.previewOpts.position {
 		case posUp, posDown:
 			minAreaHeight *= 2
 		case posLeft, posRight:
@@ -780,13 +793,21 @@ func (t *Terminal) resizeWindows() {
 			marginInt[0]-1, marginInt[3]-2, width+4, height+2,
 			false, tui.MakeBorderStyle(t.borderShape, t.unicode))
 	}
+
+	// Add padding
+	for idx, val := range paddingInt {
+		marginInt[idx] += val
+	}
+	width = screenWidth - marginInt[1] - marginInt[3]
+	height = screenHeight - marginInt[0] - marginInt[2]
+
 	noBorder := tui.MakeBorderStyle(tui.BorderNone, t.unicode)
 	if previewVisible {
 		createPreviewWindow := func(y int, x int, w int, h int) {
 			pwidth := w
 			pheight := h
-			if t.preview.border != tui.BorderNone {
+			if t.previewOpts.border != tui.BorderNone {
-				previewBorder := tui.MakeBorderStyle(t.preview.border, t.unicode)
+				previewBorder := tui.MakeBorderStyle(t.previewOpts.border, t.unicode)
 				t.pborder = t.tui.NewWindow(y, x, w, h, true, previewBorder)
 				pwidth -= 4
 				pheight -= 2
@@ -801,27 +822,29 @@ func (t *Terminal) resizeWindows() {
 			t.pwindow = t.tui.NewWindow(y, x, pwidth, pheight, true, noBorder)
 		}
 		verticalPad := 2
-		if t.preview.border == tui.BorderNone {
+		minPreviewHeight := 3
+		if t.previewOpts.border == tui.BorderNone {
 			verticalPad = 0
+			minPreviewHeight = 1
 		}
-		switch t.preview.position {
+		switch t.previewOpts.position {
 		case posUp:
-			pheight := calculateSize(height, t.preview.size, minHeight, 3, verticalPad)
+			pheight := calculateSize(height, t.previewOpts.size, minHeight, minPreviewHeight, verticalPad)
 			t.window = t.tui.NewWindow(
 				marginInt[0]+pheight, marginInt[3], width, height-pheight, false, noBorder)
 			createPreviewWindow(marginInt[0], marginInt[3], width, pheight)
 		case posDown:
-			pheight := calculateSize(height, t.preview.size, minHeight, 3, verticalPad)
+			pheight := calculateSize(height, t.previewOpts.size, minHeight, minPreviewHeight, verticalPad)
 			t.window = t.tui.NewWindow(
 				marginInt[0], marginInt[3], width, height-pheight, false, noBorder)
 			createPreviewWindow(marginInt[0]+height-pheight, marginInt[3], width, pheight)
 		case posLeft:
-			pwidth := calculateSize(width, t.preview.size, minWidth, 5, 4)
+			pwidth := calculateSize(width, t.previewOpts.size, minWidth, 5, 4)
 			t.window = t.tui.NewWindow(
 				marginInt[0], marginInt[3]+pwidth, width-pwidth, height, false, noBorder)
 			createPreviewWindow(marginInt[0], marginInt[3], pwidth, height)
 		case posRight:
-			pwidth := calculateSize(width, t.preview.size, minWidth, 5, 4)
+			pwidth := calculateSize(width, t.previewOpts.size, minWidth, 5, 4)
 			t.window = t.tui.NewWindow(
 				marginInt[0], marginInt[3], width-pwidth, height, false, noBorder)
 			createPreviewWindow(marginInt[0], marginInt[3]+width-pwidth, pwidth, height)
@@ -1093,13 +1116,16 @@ func (t *Terminal) displayWidthWithLimit(runes []rune, prefixWidth int, limit in
 }
 
 func (t *Terminal) trimLeft(runes []rune, width int) ([]rune, int32) {
-	if len(runes) > maxDisplayWidthCalc && len(runes) > width {
+	width = util.Max(0, width)
-		trimmed := len(runes) - width
+	var trimmed int32
-		return runes[trimmed:], int32(trimmed)
+	// Assume that each rune takes at least one column on screen
+	if len(runes) > width {
+		diff := len(runes) - width
+		trimmed = int32(diff)
+		runes = runes[diff:]
 	}
 
 	currentWidth := t.displayWidth(runes)
-	var trimmed int32
 
 	for currentWidth > width && len(runes) > 0 {
 		runes = runes[1:]
@@ -1254,6 +1280,11 @@ func (t *Terminal) renderPreviewText(unchanged bool) {
 	}
 	var ansi *ansiState
 	for _, line := range t.previewer.lines {
+		var lbg tui.Color = -1
+		if ansi != nil {
+			ansi.lbg = -1
+		}
+		line = strings.TrimSuffix(line, "\n")
 		if lineNo >= height || t.pwindow.Y() == height-1 && t.pwindow.X() > 0 {
 			t.previewed.filled = true
 			break
@@ -1262,12 +1293,13 @@ func (t *Terminal) renderPreviewText(unchanged bool) {
 			prefixWidth := 0
 			_, _, ansi = extractColor(line, ansi, func(str string, ansi *ansiState) bool {
 				trimmed := []rune(str)
-				if !t.preview.wrap {
+				if !t.previewOpts.wrap {
 					trimmed, _ = t.trimRight(trimmed, maxWidth-t.pwindow.X())
 				}
 				str, width := t.processTabs(trimmed, prefixWidth)
 				prefixWidth += width
 				if t.theme.Colored && ansi != nil && ansi.colored() {
+					lbg = ansi.lbg
 					fillRet = t.pwindow.CFill(ansi.fg, ansi.bg, ansi.attr, str)
 				} else {
 					fillRet = t.pwindow.CFill(tui.ColPreview.Fg(), tui.ColPreview.Bg(), tui.AttrRegular, str)
@@ -1284,6 +1316,12 @@ func (t *Terminal) renderPreviewText(unchanged bool) {
 			if unchanged && lineNo == 0 {
 				break
 			}
+			if lbg >= 0 {
+				t.pwindow.CFill(-1, lbg, tui.AttrRegular,
+					strings.Repeat(" ", t.pwindow.Width()-t.pwindow.X())+"\n")
+			} else {
+				t.pwindow.Fill("\n")
+			}
 		}
 		lineNo++
 	}
@@ -1523,7 +1561,7 @@ func atopi(s string) int {
 }
 
 func (t *Terminal) evaluateScrollOffset(list []*Item, height int) int {
-	offsetExpr := t.replacePlaceholder(t.preview.scroll, false, "", list)
+	offsetExpr := t.replacePlaceholder(t.previewOpts.scroll, false, "", list)
 	nums := strings.Split(offsetExpr, "-")
 	switch len(nums) {
 	case 0:
@@ -2005,7 +2043,7 @@ func (t *Terminal) Loop() {
 						if focusedIndex != currentIndex || version != t.version {
 							version = t.version
 							focusedIndex = currentIndex
-							refreshPreview(t.preview.command)
+							refreshPreview(t.previewOpts.command)
 						}
 					case reqJump:
 						if t.merger.Length() == 0 {
@@ -2030,10 +2068,15 @@ func (t *Terminal) Loop() {
 						})
 					case reqPreviewDisplay:
 						result := value.(previewResult)
-						t.previewer.version = result.version
+						if t.previewer.version != result.version {
+							t.previewer.version = result.version
+							t.previewer.following = t.previewOpts.follow
+						}
 						t.previewer.lines = result.lines
 						t.previewer.spinner = result.spinner
-						if result.offset >= 0 {
+						if t.previewer.following {
+							t.previewer.offset = len(t.previewer.lines) - t.pwindow.Height()
+						} else if result.offset >= 0 {
 							t.previewer.offset = util.Constrain(result.offset, 0, len(t.previewer.lines)-1)
 						}
 						t.printPreview()
@@ -2097,9 +2140,10 @@ func (t *Terminal) Loop() {
 			if !t.previewer.scrollable {
 				return
 			}
+			t.previewer.following = false
 			newOffset := t.previewer.offset + amount
 			numLines := len(t.previewer.lines)
-			if t.preview.cycle {
+			if t.previewOpts.cycle {
 				newOffset = (newOffset + numLines) % numLines
 			}
 			newOffset = util.Constrain(newOffset, 0, numLines-1)
@@ -2140,17 +2184,17 @@ func (t *Terminal) Loop() {
 				if t.hasPreviewer() {
 					togglePreview(!t.previewer.enabled)
 					if t.previewer.enabled {
-						valid, list := t.buildPlusList(t.preview.command, false)
+						valid, list := t.buildPlusList(t.previewOpts.command, false)
 						if valid {
 							t.cancelPreview()
 							t.previewBox.Set(reqPreviewEnqueue,
-								previewRequest{t.preview.command, t.pwindow, list})
+								previewRequest{t.previewOpts.command, t.pwindow, list})
 						}
 					}
 				}
 			case actTogglePreviewWrap:
 				if t.hasPreviewWindow() {
-					t.preview.wrap = !t.preview.wrap
+					t.previewOpts.wrap = !t.previewOpts.wrap
 					req(reqPreviewRefresh)
 				}
 			case actToggleSort:
@@ -2188,11 +2232,14 @@ func (t *Terminal) Loop() {
 				}
 			case actPrintQuery:
 				req(reqPrintQuery)
+			case actChangePrompt:
+				t.prompt, t.promptLen = t.parsePrompt(a.a)
+				req(reqPrompt)
 			case actPreview:
 				togglePreview(true)
 				refreshPreview(a.a)
 			case actRefreshPreview:
-				refreshPreview(t.preview.command)
+				refreshPreview(t.previewOpts.command)
 			case actReplaceQuery:
 				if t.cy >= 0 && t.cy < t.merger.Length() {
 					t.input = t.merger.Get(t.cy).item.text.ToRunes()
@@ -2515,7 +2562,7 @@ func (t *Terminal) Loop() {
 
 		if queryChanged {
 			if t.isPreviewEnabled() {
-				_, _, q := hasPreviewFlags(t.preview.command)
+				_, _, q := hasPreviewFlags(t.previewOpts.command)
 				if q {
 					t.version++
 				}

src/tui/dummy.go

@@ -4,7 +4,7 @@
 
 package tui
 
-type Attr int
+type Attr int32
 
 func HasFullscreenRenderer() bool {
 	return false

src/tui/light.go

@@ -463,20 +463,54 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					}
 					return Event{Invalid, 0, nil}
 				case ';':
-					if len(r.buffer) != 6 {
+					if len(r.buffer) < 6 {
 						return Event{Invalid, 0, nil}
 					}
 					*sz = 6
 					switch r.buffer[4] {
-					case '2', '5':
+					case '1', '2', '3', '5':
-						switch r.buffer[5] {
+						alt := r.buffer[4] == '3'
+						altShift := r.buffer[4] == '1' && r.buffer[5] == '0'
+						char := r.buffer[5]
+						if altShift {
+							if len(r.buffer) < 7 {
+								return Event{Invalid, 0, nil}
+							}
+							*sz = 7
+							char = r.buffer[6]
+						}
+						switch char {
 						case 'A':
+							if alt {
+								return Event{AltUp, 0, nil}
+							}
+							if altShift {
+								return Event{AltSUp, 0, nil}
+							}
 							return Event{SUp, 0, nil}
 						case 'B':
+							if alt {
+								return Event{AltDown, 0, nil}
+							}
+							if altShift {
+								return Event{AltSDown, 0, nil}
+							}
 							return Event{SDown, 0, nil}
 						case 'C':
+							if alt {
+								return Event{AltRight, 0, nil}
+							}
+							if altShift {
+								return Event{AltSRight, 0, nil}
+							}
 							return Event{SRight, 0, nil}
 						case 'D':
+							if alt {
+								return Event{AltLeft, 0, nil}
+							}
+							if altShift {
+								return Event{AltSLeft, 0, nil}
+							}
 							return Event{SLeft, 0, nil}
 						}
 					} // r.buffer[4]

src/tui/tcell.go

@@ -222,7 +222,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 
 		// process keyboard:
 	case *tcell.EventKey:
-		alt := (ev.Modifiers() & tcell.ModAlt) > 0
+		mods := ev.Modifiers()
+		alt := (mods & tcell.ModAlt) > 0
+		shift := (mods & tcell.ModShift) > 0
+		altShift := alt && shift
 		keyfn := func(r rune) int {
 			if alt {
 				return CtrlAltA - 'a' + int(r)
@@ -297,21 +300,45 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{BSpace, 0, nil}
 
 		case tcell.KeyUp:
+			if altShift {
+				return Event{AltSUp, 0, nil}
+			}
+			if shift {
+				return Event{SUp, 0, nil}
+			}
 			if alt {
 				return Event{AltUp, 0, nil}
 			}
 			return Event{Up, 0, nil}
 		case tcell.KeyDown:
+			if altShift {
+				return Event{AltSDown, 0, nil}
+			}
+			if shift {
+				return Event{SDown, 0, nil}
+			}
 			if alt {
 				return Event{AltDown, 0, nil}
 			}
 			return Event{Down, 0, nil}
 		case tcell.KeyLeft:
+			if altShift {
+				return Event{AltSLeft, 0, nil}
+			}
+			if shift {
+				return Event{SLeft, 0, nil}
+			}
 			if alt {
 				return Event{AltLeft, 0, nil}
 			}
 			return Event{Left, 0, nil}
 		case tcell.KeyRight:
+			if altShift {
+				return Event{AltSRight, 0, nil}
+			}
+			if shift {
+				return Event{SRight, 0, nil}
+			}
 			if alt {
 				return Event{AltRight, 0, nil}
 			}

src/tui/tui.go

@@ -98,6 +98,11 @@ const (
 	AltLeft
 	AltRight
 
+	AltSUp
+	AltSDown
+	AltSLeft
+	AltSRight
+
 	Alt0
 )
 
@@ -119,6 +124,10 @@ const (
 
 type Color int32
 
+func (c Color) IsDefault() bool {
+	return c == colDefault
+}
+
 func (c Color) is24() bool {
 	return c > 0 && (c&(1<<24)) > 0
 }
@@ -185,6 +194,11 @@ func (p ColorPair) Attr() Attr {
 	return p.attr
 }
 
+func (p ColorPair) HasBg() bool {
+	return p.attr&Reverse == 0 && p.bg != colDefault ||
+		p.attr&Reverse > 0 && p.fg != colDefault
+}
+
 func (p ColorPair) merge(other ColorPair, except Color) ColorPair {
 	dup := p
 	dup.attr = dup.attr.Merge(other.attr)
@@ -554,6 +568,9 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 
 func initPalette(theme *ColorTheme) {
 	pair := func(fg, bg ColorAttr) ColorPair {
+		if fg.Color == colDefault && (fg.Attr&Reverse) > 0 {
+			bg.Color = colDefault
+		}
 		return ColorPair{fg.Color, bg.Color, fg.Attr}
 	}
 	blank := theme.Fg

test/test_go.rb

@@ -1823,6 +1823,20 @@ class TestGoFZF < TestBase
     tmux.until { |lines| lines.item_count == 100 }
     tmux.until { |lines| lines[1]&.include?('[200]') }
   end
+
+  def test_change_prompt
+    tmux.send_keys "#{FZF} --bind 'a:change-prompt(a> ),b:change-prompt:b> ' --query foo", :Enter
+    tmux.until { |lines| assert_equal '> foo', lines[-1] }
+    tmux.send_keys 'a'
+    tmux.until { |lines| assert_equal 'a> foo', lines[-1] }
+    tmux.send_keys 'b'
+    tmux.until { |lines| assert_equal 'b> foo', lines[-1] }
+  end
+
+  def test_preview_window_follow
+    tmux.send_keys "#{FZF} --preview 'seq 1000 | nl' --preview-window down:noborder:follow", :Enter
+    tmux.until { |lines| assert_equal '1000  1000', lines[-1].strip }
+  end
 end
 
 module TestShell