#!/usr/bin/env bash # fzf-tmux: starts fzf in a tmux pane # usage: fzf-tmux [LAYOUT OPTIONS] [–] [FZF OPTIONS]
fail() {
>&2 echo "$1" exit 2
}
fzf=“$(command -v fzf 2> /dev/null)” || fzf=“$(dirname ”$0“)/fzf”
- [ -x “$fzf” ]
-
|| fail 'fzf executable not found'
tmux_args=() args=() opt=“” skip=“” swap=“” close=“” term=“”
- [ -n “$LINES” ]
-
&& lines=$LINES || lines=$(tput lines) || lines=$(tmux display-message -p “#{pane_height}”)
- [ -n “$COLUMNS” ]
-
&& columns=$COLUMNS || columns=$(tput cols) || columns=$(tmux display-message -p “#{pane_width}”)
help() {
>&2 echo 'usage: fzf-tmux [LAYOUT OPTIONS] [--] [FZF OPTIONS] LAYOUT OPTIONS: (default layout: -d 50%) Popup window (requires tmux 3.2 or above): -p [WIDTH[%][,HEIGHT[%]]] (default: 50%) -w WIDTH[%] -h HEIGHT[%] -x COL -y ROW Split pane: -u [HEIGHT[%]] Split above (up) -d [HEIGHT[%]] Split below (down) -l [WIDTH[%]] Split left -r [WIDTH[%]] Split right
'
exit
}
while [[ $# -gt 0 ]]; do
arg="$1" shift [[ -z "$skip" ]] && case "$arg" in -) term=1 ;; --help) help ;; --version) echo "fzf-tmux (with fzf $("$fzf" --version))" exit ;; -p*|-w*|-h*|-x*|-y*|-d*|-u*|-r*|-l*) if [[ "$arg" =~ ^-[pwhxy] ]]; then [[ "$opt" =~ "-K -E" ]] || opt="-K -E" elif [[ "$arg" =~ ^.[lr] ]]; then opt="-h" if [[ "$arg" =~ ^.l ]]; then opt="$opt -d" swap="; swap-pane -D ; select-pane -L" close="; tmux swap-pane -D" fi else opt="" if [[ "$arg" =~ ^.u ]]; then opt="$opt -d" swap="; swap-pane -D ; select-pane -U" close="; tmux swap-pane -D" fi fi if [[ ${#arg} -gt 2 ]]; then size="${arg:2}" else if [[ "$1" =~ ^[0-9%,]+$ ]] || [[ "$1" =~ ^[A-Z]$ ]]; then size="$1" shift else continue fi fi if [[ "$arg" =~ ^-p ]]; then if [[ -n "$size" ]]; then w=${size%%,*} h=${size##*,} opt="$opt -w$w -h$h" fi elif [[ "$arg" =~ ^-[whxy] ]]; then opt="$opt ${arg:0:2}$size" elif [[ "$size" =~ %$ ]]; then size=${size:0:((${#size}-1))} if [[ -n "$swap" ]]; then opt="$opt -p $(( 100 - size ))" else opt="$opt -p $size" fi else if [[ -n "$swap" ]]; then if [[ "$arg" =~ ^.l ]]; then max=$columns else max=$lines fi size=$(( max - size )) [[ $size -lt 0 ]] && size=0 opt="$opt -l $size" else opt="$opt -l $size" fi fi ;; --) # "--" can be used to separate fzf-tmux options from fzf options to # avoid conflicts skip=1 tmux_args=("${args[@]}") args=() continue ;; *) args+=("$arg") ;; esac [[ -n "$skip" ]] && args+=("$arg")
done
if [[ -z “$TMUX” ]]; then
"$fzf" "${args[@]}" exit $?
fi
# –height option is not allowed. CTRL-Z is also disabled. args=(“${args}” “–no-height” “–bind=ctrl-z:ignore”)
# Handle zoomed tmux pane without popup options by moving it to a temp window if [[ ! “$opt” =~ “-K -E” ]] && tmux list-panes -F '#F' | grep -q Z; then
zoomed_without_popup=1 original_window=$(tmux display-message -p "#{window_id}") tmp_window=$(tmux new-window -d -P -F "#{window_id}" "bash -c 'while :; do for c in \\| / - '\\;' do sleep 0.2; printf \"\\r\$c fzf-tmux is running\\r\"; done; done'") tmux swap-pane -t $tmp_window \; select-window -t $tmp_window
fi
set -e
# Clean up named pipes on exit id=$RANDOM argsf=“${TMPDIR:-/tmp}/fzf-args-$id” fifo1=“${TMPDIR:-/tmp}/fzf-fifo1-$id” fifo2=“${TMPDIR:-/tmp}/fzf-fifo2-$id” fifo3=“${TMPDIR:-/tmp}/fzf-fifo3-$id” tmux_win_opts=( $(tmux show-window-options remain-on-exit ; show-window-options synchronize-panes | sed '/ off/d; s/^/set-window-option /; s/$/ \;/') ) cleanup() {
\rm -f $argsf $fifo1 $fifo2 $fifo3 # Restore tmux window options if [[ "${#tmux_win_opts[@]}" -gt 0 ]]; then eval "tmux ${tmux_win_opts[*]}" fi # Remove temp window if we were zoomed without popup options if [[ -n "$zoomed_without_popup" ]]; then tmux display-message -p "#{window_id}" > /dev/null tmux swap-pane -t $original_window \; \ select-window -t $original_window \; \ kill-window -t $tmp_window \; \ resize-pane -Z fi if [[ $# -gt 0 ]]; then trap - EXIT exit 130 fi
} trap 'cleanup 1' SIGUSR1 trap 'cleanup' EXIT
envs=“export TERM=$TERM ”
- [ “$opt” =~ “-K -E” ]
-
&& FZF_DEFAULT_OPTS=“–margin 0,1 $FZF_DEFAULT_OPTS”
- [ -n “$FZF_DEFAULT_OPTS” ]
-
&& envs=“$envs FZF_DEFAULT_OPTS=$(printf %q ”$FZF_DEFAULT_OPTS“)”
- [ -n “$FZF_DEFAULT_COMMAND” ]
-
&& envs=“$envs FZF_DEFAULT_COMMAND=$(printf %q ”$FZF_DEFAULT_COMMAND“)”
echo “$envs;” > “$argsf”
# Build arguments to fzf opts=$(printf “%q ” “${args}”)
pppid=$$ echo -n “trap 'kill -SIGUSR1 -$pppid' EXIT SIGINT SIGTERM;” >> $argsf close=“; trap - EXIT SIGINT SIGTERM $close”
export TMUX=$(cut -d , -f 1,2 <<< “$TMUX”) mkfifo -m o+w $fifo2 if [[ “$opt” =~ “-K -E” ]]; then
cat $fifo2 & if [[ -n "$term" ]] || [[ -t 0 ]]; then cat <<< "\"$fzf\" $opts > $fifo2; out=\$? $close; exit \$out" >> $argsf else mkfifo $fifo1 cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; out=\$? $close; exit \$out" >> $argsf cat <&0 > $fifo1 & fi # tmux dropped the support for `-K`, `-R` to popup command # TODO: We can remove this once tmux 3.2 is released if [[ ! "$(tmux popup --help 2>&1)" =~ '-R shell-command' ]]; then opt="${opt/-K/}" else opt="${opt} -R" fi tmux popup -d "$PWD" "${tmux_args[@]}" $opt "bash $argsf" > /dev/null 2>&1 exit $?
fi
mkfifo -m o+w $fifo3 if [[ -n “$term” ]] || [[ -t 0 ]]; then
cat <<< "\"$fzf\" $opts > $fifo2; echo \$? > $fifo3 $close" >> $argsf
else
mkfifo $fifo1 cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" >> $argsf cat <&0 > $fifo1 &
fi tmux set-window-option synchronize-panes off ;\
set-window-option remain-on-exit off \;\ split-window -c "$PWD" $opt "${tmux_args[@]}" "bash -c 'exec -a fzf bash $argsf'" $swap \ > /dev/null 2>&1 || { "$fzf" "${args[@]}"; exit $?; }
cat $fifo2 exit “$(cat $fifo3)”