* (bug 26809) Uploading files with multiple extensions where one of the extensions
is blacklisted now gives the proper extension in the error message.
* (bug 26961) Hide anon edits in watchlist preference now actually works.
+* (bug 19751) Filesystem is now checked during image undeletion
+* Send last modified headers for Special:Recentchanges when RC patrol is
+ enabled, but user cannot see rc patrol links.
+* (bug 26548) ForeignAPIRepo (InstantCommons) now works with PDF files
+ and other multi-paged file formats.
=== API changes in 1.18 ===
* (bug 26339) Throw warning when truncating an overlarge API result
* (bug 26650) Remove $wgAPICacheHelp in favour of $wgAPICacheHelpTimeout
* (bug 24650) Fix API to work with categorylinks changes
* Expose list of skins in meta=siteinfo
+* (bug 26548) Add iiurlparam param to query=imageinfo and query=stashimageinfo
=== Languages updated in 1.18 ===