This task is about writing and deploying the config change necessary for people to gain access to the Reply and New Discussion Tools' new `source` mode.
=== Deployment timing
//Ideally,// this config change can be deployed during a backport window on **Tuesday's (11-May)** or **Wednesday's (12-May)**:
- Tuesday: https://wikitech.wikimedia.org/wiki/Deployments#Tuesday,_May_11
- Wednesday: https://wikitech.wikimedia.org/wiki/Deployments#Wednesday,_May_12
=== Requirements
- At wikis where where the Reply and New Discussion Tool are available as either an opt-in beta feature or opt-out user preference (read: all Wikipedias and Wikimedia projects), people who have either tool enabled should:
-- See a new setting within `Special:Preferences#mw-prefsection-editing`'s `Discussion page` section that reads as follows: `Enable experimental tools in the quick replying and quick topic adding features' Source modes.`
--- When the setting is "enabled," people should see the same text editing tools/toolbar available within Reply and New Discussion Tools' `source` modes, available in its `visual` modes.
--- When the setting is "disabled," people should NOT see any text editing tools/toolbar within Reply and New Discussion Tools' `source` modes.
--- When //both// the `Enable quick topic adding` and `Enable quick replying` settings are TURNED OFF, the `Enable experimental tools in the...` setting should NOT be visible.
- By default, the setting for enabling/disabling text editing tools/toolbar available within the Reply and New Discussion Tools' `source` modes should be **TURNED OFF**.
=== Done
- [ ] @ppelberg documents the deployment timing in the `Deploying timing` section above
- [ ] All `Requirements` are implemented
=== Related tasks
- T275950
- T257391