fzf/bin/fzf-tmux

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#!/usr/bin/env bash
# fzf-tmux: starts fzf in a tmux pane
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# usage: fzf-tmux [-h HEIGHT[%]] [-w WIDTH[%]] [--] [FZF OPTIONS]
args=()
opt=""
while [ $# -gt 0 ]; do
arg="$1"
case "$arg" in
-w*|-h*)
if [ ${#arg} -gt 2 ]; then
size="${arg:2}"
else
shift
size="$1"
fi
[[ "$arg" =~ ^-w ]] && opt="-h"
[[ "$size" =~ %$ ]] && opt="$opt -p ${size:0:-1}" ||
opt="$opt -l $size"
;;
--)
# "--" can be used to separate fzf-tmux options from fzf options to
# avoid conflicts
break
;;
*)
args+=("$1")
;;
esac
shift
done
if [ -z "$TMUX_PANE" ]; then
fzf "${args[@]}"
exit $?
fi
set -e
# Build arguments to fzf
[ ${#args[@]} -gt 0 ] && fzf_args=$(printf '\\"%s\\" ' "${args[@]}"; echo '')
# Clean up named pipes on exit
id=$RANDOM
fifo1=/tmp/fzf-fifo1-$id
fifo2=/tmp/fzf-fifo2-$id
fifo3=/tmp/fzf-fifo3-$id
cleanup() {
rm -f $fifo1 $fifo2 $fifo3
}
trap cleanup EXIT SIGINT SIGTERM
fail() {
>&2 echo "$1"
exit 1
}
fzf=$(which fzf 2> /dev/null) || fail "fzf executable not found"
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mkfifo $fifo2
mkfifo $fifo3
if [ -t 0 ]; then
tmux split-window $opt 'sh -c "'$fzf' '"$fzf_args"' > '$fifo2'; echo \$? > '$fifo3'"'
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else
mkfifo $fifo1
tmux split-window $opt 'sh -c "'$fzf' '"$fzf_args"' < '$fifo1' > '$fifo2'; echo \$? > '$fifo3'"'
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cat <&0 > $fifo1 &
fi
cat $fifo2
[ "$(cat $fifo3)" = '0' ]