Add lineanchors to all Liquid highlight tags

README.md

This small bash script replaces all Liquid codeblock tags with one including the lineanchors option. For instance:

{% highlight vim %}

{% highlight ruby %}```

Is converted to:

```{% highlight python lineanchors %}

{% highlight vim lineanchors %}

{% highlight ruby lineanchors %}```

The context of this is that CSS counters for codeblocks need lineanchors to be enabled, but the plugin I was using, [Pygments Global Options](https://gist.github.com/danasilver/8121699), is incompatible with the new Jekyll 2.2.0. Hence, I needed a way to add `lineanchors` to all the Liquid tags *after* the language (`highlight lineanchors lang` simply doesn't work, as Jekyll interprets `lineanchors` as the language instead of `lang`).

This seemed like the simplest solution to the problem. If anyone has a simpler/more elegant one, let me know.

pie-lineanchors.sh

#!/bin/bash

# Adds lineanchors option to all codeblock Liquid tags

languages=( vim python perl ruby yaml css html bash cpp c )
posts="../_posts/*"

for lang in "${languages[@]}"
do
    :
    perl -pi -e "s/highlight $lang/highlight $lang lineanchors/g" $posts
done