LoginForm::$validErrorMessages restricts the number of valid error messages. For a custom special page which requires login e.g. Special:Uploads (on mobile) we would like to display a custom message.
Should we add a hook or is there a nicer way extensions can register new messages?
Version: unspecified
Severity: normal
Another way i was thinking about is to add a new config variable storing an array with additional valid messages. This would need a little rewrite of the currently used access to the static var (LoginForm::$validErrorMessages). The negative point: Extensions still need to set thier messages very early in the setup process.
Change 170520 had a related patch set uploaded by Florianschmidtwelzow:
UserLogin: Allow extensions to add valid error messages
Change 170521 had a related patch set uploaded by Jdlrobson:
Use Hook to add valid error messages
Change 170520 merged by jenkins-bot:
UserLogin: Allow extensions to add valid error messages