Change Details

In T339268 we propose an inline script to replace the existing system and support multiple client preferences. This requires changes to Vector namely: * We need to use a class suffixed with -clientpref-0 or -clientpref-1 instead of -disabled or -enabled * We store in a different cookie # Requirements [] As an anonymous user the limited width will persist across pages / page refreshes [] Must be backwards compatible - all preferences saved via the cookie system will work in the new system [] Merge https://gerrit.wikimedia.org/r/c/mediawiki/core/+/932819 at the same time. # QA As an anonymous user: [] Check the limited width toggle feature bottom right works (persists across page views). Clicking it should expand the article to full width and it should persist on page reload. [x] (likely done by engineer) check the new CSS/JS works with old HTML # Sign off [] Create task for monitoring the performance implications of the change [] Create task for cleaning up code for cached HTML

In T339268 we propose an inline script to replace the existing system and support multiple client preferences. This requires changes to Vector namely: * We need to use a class suffixed with -clientpref-0 or -clientpref-1 instead of -disabled or -enabled * We store in a different cookie # Requirements [] As an anonymous user the limited width will persist across pages / page refreshes [] Must be backwards compatible - all preferences saved via the cookie system will work in the new system [] Merge https://gerrit.wikimedia.org/r/c/mediawiki/core/+/932819 at the same time. # QA As an anonymous user: [] Check the limited width toggle feature bottom right works (persists across page views). Clicking it should expand the article to full width and it should persist on page reload. [x] (likely done by engineer) check the new CSS/JS works with old HTML # Sign off steps [] Create task for monitoring the performance implications of the change [x] Create task for cleaning up code for cached HTML (Done in T343843)

In T339268 we propose an inline script to replace the existing system and support multiple client preferences. This requires changes to Vector namely: * We need to use a class suffixed with -clientpref-0 or -clientpref-1 instead of -disabled or -enabled * We store in a different cookie # Requirements [] As an anonymous user the limited width will persist across pages / page refreshes [] Must be backwards compatible - all preferences saved via the cookie system will work in the new system [] Merge https://gerrit.wikimedia.org/r/c/mediawiki/core/+/932819 at the same time. # QA As an anonymous user: [] Check the limited width toggle feature bottom right works (persists across page views). Clicking it should expand the article to full width and it should persist on page reload. [x] (likely done by engineer) check the new CSS/JS works with old HTML # Sign off steps [] Create task for monitoring the performance implications of the change [x] Create task for cleaning up code for cached HTML (Done in T343843)