Re: An unwonted warning I constantly get about fontsets when I start Emacs

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sun, 28 May 2017 07:15:25 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > I'm attaching charscript.el as it seems to be a generated file not
> > tracked by git.
> 
> And here's what seems to be the root cause of your problem:
> 
>     (#x10300 #x1032F old-ıtalic)
> 
> That ı in ıtalic is the dotless i character, whereas it should be the
> Latin i character.  I see a few more of those elsewhere in the file,
> all of them will cause similar problems.  I'm guessing that some bug
> causes this in your locale, so as the first thing please delete this
> file and let the Emacs build process re-generate it, in the hope that
> the bug was meanwhile fixed.  If the regenerated file has the same
> problem, please do report a bug about that.

And I think I know what causes that: this file is produced by running
Awk, and the Awk program uses 'tolower', which in your locale produces
the dotless i characters instead of the Latin i.

So running the build after setting LC_ALL=C should fix the problem.