[Pika-dev] Pika string work

[Andreas Rottmann]

Hi!

Now that udstr is mostly on-line, I've gone back to do a bit ore
hacking on Pika strings. However, I miss a few functions to mirrored
at the udstr API:

udstr_make_n -- create new string of given length (in codepoints)
udstr_{case,}cmp
udstr_at/udstr_set

I could well add those, since they should be simple wrappers, but I'd
like to have the interface given first, so they come out right.

Andy
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