#!/usr/local/bin/dash

# Using external pipe with st, give a dmenu prompt of recent commands,
# allowing the user to copy the output of one.
# xclip required for this script.
# By Jaywalker and Luke
# Adapted for FreeBSD by Joe
mem=$(cat)
mem=$(printf "%s" "$mem" | gsed 's/\x0//g')
ps1=$(printf "%s" "$mem" |
	gtac |
	tail -n1 |
	gsed 's/%.\+/%/')
chosen=$(printf "%s" "$mem" |
	grep -F "$ps1" |
	sed '$ d' |
	gtac |
	dmenu -i -l 10 -m 0 |
	sed 's/[^^]/[&]/g; s/\^/\\^/g')
eps1=$(echo "$ps1" |
	sed 's/[^^]/[&]/g; s/\^/\\^/g')
if [ "$1" = "noprompt" ]; then
	printf "%s" "$mem" |
		gawk "/^$chosen$/{p=1;print;next} p&&/$eps1/{p=0};p" |
		gtac |
		sed '$ d' |
		gtac |
		xclip -selection clipboard
else
	printf "%s" "$mem" |
		gawk "/^$chosen$/{p=1;print;next} p&&/$eps1/{p=0};p" |
		xclip -selection clipboard
fi