Currently, the content of RSS feeds such as
https://pt.wikipedia.org/w/index.php?title=Special:RecentChanges&feed=rss&action=purge
includes the classes
* diff
* diff-contentalign-left
* diff-marker
* diff-content
* diff-lineno
* diff-empty
* diffchange
* diffchange-inline
On the other hand, the other classes which are present on the wiki pages are removed from RSS feeds, making it difficult for the users to customize the styling of these diffs if they want to do so.
The classes
* diff
* diff-otitle
* diff-ntitle
* diff-addedline
* diff-deletedline
* diff-context
* diffchange
shouldn't be removed by function applyDiffStyle from
http://svn.wikimedia.org/viewvc/mediawiki/branches/REL1_18/phase3/includes/FeedUtils.php?view=markup#l174
The styles should just be copied to the elements, without removing the classes.
Besides, the regex used to detect the classes doesn't match the "diff" and "diffchange" classes. I'll open another bug specifically about that.
See also bug 34798.
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**Version**: 1.19
**Severity**: enhancement