Re: manipulating (capitalize, lower case) unicode bold and italic characters

[Eli Zaretskii]

> From: Dan Hitt <dan.hitt@gmail.com>
> Date: Sun, 7 Jul 2019 12:13:11 -0700
> 
> So it's a sort of unqualified good, but it would be very useful to be able
> to select a region of text, and convert it to mathematical bold, or
> mathematical italic, or fraktur, or other unicode symbols.

What you call mathematical bold and mathematical italic is actually a
special Unicode block of characters whose intended use is to provide
symbols for mathematical formulae.  Their use as "normal" text is not
something I'd recommend, because the characters' properties are
different from those of normal text.  Nevertheless, converting ASCII
text to use these characters should be a simple matter of replacing
one character by another.

I don't understand what you mean by "fraktur", though.

> It would also be good to be able to change case easily (and i guess
> this should work whether the characters are greek or latin, and work
> with arabic digits as well).

This already does work with any character for which Unicode defines
the upper-case or lower-case pair.  Use M-l and M-u.