Capitalized text

[Dan Eble]

I am working on a grob for section labels.  I want to recommend that the user 
encode the section name in title case (Coda), but I want LilyPond to render it 
in all caps (CODA) by default.

Is there already a grob property to enable this transformation?  I've hacked in 
a callback that calls string-upcase when my new grob is created, but this seems 
like a problem that ought to have a general solution.

If this is not currently possible, would Text_interface::interpret_string() be 
the most appropriate place to implement it?

Thanks,
— 
Dan