DText is processed in three phases: a preprocessing phase, the regular
parsing phases, and a postprocessing phase.
In the preprocessing phase we extract all the wiki links from all the
dtext messages on the page (more precisely, we do this in forum threads
and on comment pages, because these are the main places with lots of
dtext). This is so we can lookup all the tags and wiki pages in one
query, which is necessary because in the worst case (in certain forum
threads and in certain list_of_* wiki pages) there can be hundreds of
tags per page.
In the postprocessing phase we fixup the html generated by the ragel
parser to add CSS classes to wiki links. We do this in a postprocessing
step because it's easier than doing it in the ragel parser itself.
* Change page title from "Forum - Blah blah - Danbooru" to "Blah blah blah - Forum - Danbooru"
so that more of the thread title is visible in tabs.
* Change "Reply »" to "Post reply" for consistency with comments (where
the new comment link is called "Post comment".
* Remove "Topic: " so that topic titles take up less space on mobile.
Fineprint text was variously styled with `.info`, `.tn`, `.hint`, or
`.cost-footnote` css classes. Standardize on `.fineprint` instead. Use
`.hint` only for form hints and `.tn` only for <tn> tags in translation
notes.
Incidentally changes the font size of form hints to 0.8em (was 0.7em)
and the color of fineprint to #888 (was #AAA or #666).
> Found an issue with the forum topic ATOM discovery link. Currently the
> link is visible to feed detectors, but they are unable to add it since
> the link provided is invalid.
>
> <link rel="alternate" type="application/atom+xml" title="Artist tagging
> help" href="http://danbooru.donmai.us/forum_topics.8199" />
