@AnalyzerDef got extended with an option to define CharFilter, however, the programmatic API does not offer this capability yet.
Merged into master/5.6. I'm seeing it's assigned to 5.5, too. That made me curious, what kinds of issues are meant to go into that version? I'd have expected bug fixes but I'm surprised to see new features, too.
I let answer. He's the one who marked it that way.
+1 to backport, as I wouldn't consider it a new feature but rather something which we forgot to do
backported to 5.5: marking resolved.