Rewriting relative URLs

[dswd]

Convert relative URLs embedded in the content to absolute URLs so that they point to the correct destination. This rewrites URLs based on the following rules:

• If the URL contains a colon like in 'http://' or 'https://' or 'mailto:' it is considered absolute and not rewritten
• If the URL starts with a hash, it is considered a page-internal anchor that does not have to be rewritten
• If the URL starts with a double slash, it is considered absolute and not rewritten
• Anything else that starts with a slash is rewritten by prepending the host part (everything before the first slash, after the first double-slash) of the original URL
• Anything else is rewritten by prepending the directory part (everything before the last slash) of the original URL