Add failing test for multiple {% raw %} blocks

[ricordisamoa]

No description provided.

[jlongster]

ping @AaronO

[AaronO]

@ricordisamoa @jlongster I'll take a look at this.

[AaronO]

We render

{% raw %}{{ var }}{% endraw %}{{ var }}{% raw %}{{ var }}{% endraw %}

to

{{ var }}{% endraw %}{{ var }}{% raw %}{{ var }}

So we're mistakenly grabbing the outer most raw and endraw blocks.

[AaronO]

@jlongster @ricordisamoa I've got a fix for it, my block finding regex was a bit too greedy.

I'll add a few tests and send a PR your way.

[AaronO]

@jlongster @ricordisamoa Here's my PR: #503