Re: make-glyph-code incompatibility

[Eli Zaretskii]

> Cc: address@hidden,  address@hidden
> From: address@hidden (Kim F. Storm)
> Date: Tue, 04 Mar 2008 10:58:19 +0100
> 
> Eli Zaretskii <address@hidden> writes:
> 
> > Yes.  But you could make the new code use different symbols, and make
> > old symbols be unbound.  That would cause error messages early enough.
> 
> What symbols?  The display table slots?  

No, I meant make-glyph-code and other related functions/variables.
Sorry for being unclear.

> That would break more code - including code properly written to use
> make-glyph-code in emacs 22...

IMO, it's better to break code clearly and loudly than do that subtly
and silently.  This is an incompatible change; if we cannot make it
backwards compatible, let's not sweep the incompatibility under the
carpet.