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

[Eli Zaretskii <eliz@gnu.org>]

> From: Göktuğ Kayaalp <self@gkayaalp.com>
> Cc: help-gnu-emacs@gnu.org
> Date: Sat, 27 May 2017 16:44:18 +0300
> 
> >> >> Error (initialization): Creation of the default fontsets failed:
> >> >> (error Invalid script or charset name: old-italic)
> >> >>
> >> >> [...]
> >> > Please show your fontset-related customizations.
> >> 
> >> I don't have any such customisations in Emacs.  Just setting the font
> >> for some faces here and there:
> >
> > Strange, I don't see old-italic mentioned anywhere.
> >
> > Are you sure you don't have some stale Lisp files lying around and
> > shadowing the ones which come with the distribution?
> 
> None of my lisp files contain the word `fontset'.  I've looked quite a
> bit, but haven't found anything related.  I just learnt what it is,
> actually.
> 
> > Also, do you see this problem with "emacs -Q"?
> 
> Yes.  The message comes up in the *Warnings* buffer with or without -Q.
> No problems with any functionality so far tho, just the warning.

This becomes more and more stuff for a bug report, not for discussion
here.

The old-italic script is defined in charscript.el, so check that file
for problems (damaged, truncated, outdated).  It is then used in
fontset.el, and the error you see comes from there, see the function
create-default-fontset.  Maybe by looking into these two files, or by
searching your system for outdated versions which shadow these, you
will find the culprit.

My next suggestion is to make sure the tree where you build Emacs is
clean, and doesn't contain any stale files from the previous versions
you've built.