Gource caption file from mercurial tags

read_tags.sh

#!/usr/bin/env bash

CAPTION_FILE=tags.caption

function extract_tags()
{
    hg tags | while read x; do
        tag=$(echo $x | awk '{print $1}');
        rev=$(echo $x | awk '{print $2}' | awk -F: '{print $2}');
        rev_date=$(hg log -r $rev --template 'date: {date}\n' | awk -F. '{print $1}' | awk '{print $2}');
        echo "$rev_date|Version $tag released!"
    done
}

extract_tags | sort > $CAPTION_FILE

When used in a mercurial repository it will read all the tags and create a caption file to be used with gource. Simply append the following argument to your gource options to use the file
--caption-file tags.caption