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bug#24456: 25.1; [PATCH] Caps-lock doesn't affect interpretation of key


From: Eli Zaretskii
Subject: bug#24456: 25.1; [PATCH] Caps-lock doesn't affect interpretation of key chords
Date: Wed, 21 Sep 2016 17:56:51 +0300

> From: Dima Kogan <address@hidden>
> Cc: address@hidden, address@hidden
> Date: Mon, 19 Sep 2016 13:28:56 -0700
> 
> Eli Zaretskii <address@hidden> writes:
> 
> > What exactly requires testing for ASCII lower-case letters in your
> > patch?  Why only ASCII?
> 
> I'm trying to detect the caps-lock by finding capital letters that were
> produced without Shift (and vice versa). I can do something like
> 
>   !shift_pressed && isupper(c)
> 
> but that doesn't work with wide characters. There's iswupper(c). Are the
> wide chars it takes the same ones we get in that function? How about
> non-latin scripts?

We already have an inline function 'uppercasep', which you could use;
it supports any character that Emacs supports.

> Fundamentally I'm the worst person to be testing this, sadly.

Once the code is written, we can ask people to test it in different
locales, I don't expect problems in this area.

Thanks.





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