#!/usr/bin/env zsh

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

usage() {
    die Usage: $0 ISSUE TAG "[TAG ...]"
}

[[ -n $1 ]] || usage
issue=${1#issues/}
shift
for tag ($@) {
    tag=tags/$tag:t
    tag=$tag:a
    [[ -r $tag ]] || die Unknown tag
    mkdir -p issues/$issue/tags
    ln -f -s \
        `cd issues/$issue/tags ; relative $tag:h`/$tag:t \
        issues/$issue/tags/$tag:t
    git add issues/$issue/tags/$tag:t
}