#!/usr/bin/env zsh

root=$0:h:a
. $root/lib.zsh.rc

usage() {
    die Usage: $0 ISSUE
}

[[ -n $1 ]] || usage
issue=${1#issues/}
comment=issues/$issue/comment

local tmp=`mktemp`
trap "rm -f $tmp" HUP PIPE INT QUIT TERM EXIT
{ $PERL -npe 's/^/# /' <$comment ; print } >$tmp
zmodload -F zsh/stat b:zstat
zstat -A ctimePrev +ctime $tmp
$EDITOR $tmp
zstat -A ctime +ctime $tmp
[[ $ctime != $ctimePrev ]] || {
    echo Aborting comment >&2
    exit 0
}
if [[ -s $comment ]]; then
    $PERL -ne 'print if $can; if (/^$/) { $can=1 };' <$tmp >$comment
else
    cat <$tmp >$comment
fi
git add $comment