[[MediaWiki:Longpagewarning]] currently has a hardcoded limit of 29K. The reason for this was very old browsers like Opera 6 having problems with textareas larger than 32K (see [[Wikipedia:Article size#Web browsers which have problems with long articles]] for details), but that is not a valid reason anymore. Having a long page warning is still useful as a reminder for best practices like [[Wikipedia:Article size]], but the specific limit of 29 (or 32) K is too low. There should be a way to either configure the limit, or hide the message (e.g. by setting it to "-" - in that case, parser functions could be used to decide whether to show the message).
Version: unspecified
Severity: enhancement