Manual:$wgFixMalayalamUnicode/de-formal

<translate> Language, regional and character encoding settings</translate>: $wgFixMalayalamUnicode
Set this to true to clean up archaic Unicode sequences in Malayalam text.
<translate> Introduced in version:</translate>	1.16.0 (r61282)
<translate> Deprecated in version:</translate>	1.33.0 (Gerrit change 468598; git #103a4f76)
<translate> Removed in version:</translate>	1.35.0 (Gerrit change 573848; git #Idefd562)
<translate> Allowed values:</translate>	(boolean)
<translate> Default value:</translate>	true
<translate> Other settings:</translate> <translate> Alphabetical</translate> | <translate> By function</translate>

Details

Set this to true to replace ZWJ-based chillu sequences in Malayalam text with their Unicode 5.1 equivalents. This only works if $wgLanguageCode is set to "ml". Note that some clients (even new clients as of 2010) do not support these characters.

If you enable this on an existing wiki, run maintenance/cleanupTitles.php to fix any ZWJ sequences in existing page titles.