Deploying will be done similarly to Swedish and German:
- Anonymous users will get compact language links.
- Newly registered users will get compact language links.
- Already registered users will get compact language links if they had the beta feature enabled or if they didn't edit in 2017. Already registered users who edited in 2017 and didn't enable the beta feature will get the usual old language links.
- All registered users will be able to enable or disable this feature in the preferences.
Target date: 2017 February 28
Checklist
[x] Post first message [Amir]: [[ https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(miscellaneous)#Compact_Language_Links_update | page ]] / [[ https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(miscellaneous)&diff=826339559&oldid=826307852 | diff ]]
[x] Post second message [Amir]: [[ https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(miscellaneous)#Compact_Interlanguage_Links_deployment_plan | page ]] / [[ https://en.wikipedia.org/w/index.php?title=Wikipedia%3AVillage_pump_%28miscellaneous%29&type=revision&diff=827045698&oldid=826985708 | diff ]]
[v] Create performance migration testing accounts and queries [Amir]
[x] Create a patch to make it enabled on enwiki [Kartik]
[x] Schedule the ULSCompactLinksDisablePref.php dry run for Wednesday February 21. [Kartik]
[x] Perform the ULSCompactLinksDisablePref.php dry run on Wednesday February 21. [Kartik]
[x] Schedule the ULSCompactLinksDisablePref.php real run and config change ({{gerrit|412696}}) for Wednesday February 28. [Kartik]
[ ] Cherry-pick ULSCompactLinksDisablePref.php from master for T187880 (Monday February 26). [Kartik]
[ ] Perform the ULSCompactLinksDisablePref.php real run (Wednesday February 28). [Kartik]
[ ] Verify preferences conversion (Wednesday February 28) [Amir]
[ ] **Deploy** config change: {{gerrit|412696}} (Wednesday February 28) [Kartik]
[ ] Test (Wednesday February 28) [Amir]