Last modified: 2013-10-01 22:09:21 UTC
(Split from bug 45051.) Considered stable, enabled on WMF wikis and not configurable. This is really a workaround to the issue that Vector's layout breaks down on smaller screen resolutions (bug 44386), but a useful and reasonably neat one, so it should be kept.
CollapsibleNav is somewhat limited in its application; only the history tab is classed 'collapsible'. I have since made a gadget to collapse entire groups at will (see [[:en:Mediawiki:Gadget-MenuTabsToggle.js]] and CSS). The only work it needs is to make it touch-compatible (being worked on at [[:en:User:Edokter/MenuTabsToggle.js]]).
Luis Felipe Schenone expressed interest in working on this, and there's a (WIP) patch on gerrit: I7bd77e6e. Erwin, everything that's needed to make more (or different) tabs collapsible in the same way is simply adding those classes to them (even dynamically); the script is quite (surprisingly ;) ) well-written and will handle it perfectly. Your gadget is interesting, but it seems to solve a different use-case.
Mostly done, see https://gerrit.wikimedia.org/r/#/c/55524/ and https://gerrit.wikimedia.org/r/#/c/56711/
Copied from gerrit: This seems to be causing a performance problem in beta labs where the collapsible tabs take significant time to appear to users. See the screen shot at the bottom of the page at https://saucelabs.com/jobs/cef9cd7c022a455d83beb29a8c50211a
