{{ root_url }} always evaluates to empty string in asides

[brantb]

The {{ root_url }} expression in asides evaluates to an empty string when deploying to a subdirectory.

Normally this bug doesn't reveal any problems, because the expand_urls filter catches any text that looks like src="/foo" or href="/foo" and prepends root_url to the value.

However, if root_url is being used somewhere other than a src or href attribute, it causes problems. Example, example.
#221 and #758 seem related to this bug. (Despite having been closed, they are still issues)

[wakproductions]

I am also having trouble with the {{ root_url }} tag. It is blank no matter where I use it. I can't find in the code where root_url is set. Could it be a deprecated feature?

[AlexisEvo]

@wakproductions was having the same issue, eventually found out that root_url is set in the default theme's "default" layout. https://github.com/imathis/octopress/blob/master/.themes/classic/source/_layouts/default.html#L1

[eduncan911]

Thanks @AlexisEvo . But, I already have that in my default.html I am using as well as:

{{ content | expand_urls: root_url }}

We must be missing something as it still evaluates empty.

[kaworu]

This is an issue in source/_includes/asides/github.html where {{ root_url }} is used to link the jXHR.js script. You can see at http://kaworu.github.io/octopress/ that you get a 404 to http://kaworu.github.io/javascripts/libs/jXHR.js because {{ root_url }} is evaluated as empty although it should be "octopress/" (and the full URL should be http://kaworu.github.io/octopress/javascripts/libs/jXHR.js which is valid as you can check).