Re: insert-char as alias to ucs-insert

[Eli Zaretskii]

> From: Thien-Thi Nguyen <address@hidden>
> Date: Mon, 16 Jul 2012 12:31:04 +0200
> Cc: address@hidden, Leo <address@hidden>, address@hidden
> 
> () Chong Yidong <address@hidden>
> () Mon, 16 Jul 2012 17:16:20 +0800
> 
>    One significant difference is that ucs-insert errors out if the
>    argument is larger than #x10FFFF, whereas insert-char does
>    not---it tests for CHARACTERP, which accepts up to #x3FFFFF.
>    That's because the code space of utf-8-emacs is larger than
>    Unicode.  Off the top of my head, making it more permissive is
>    OK, i.e. we should allow insert-char with arguments of up to
>    #x3FFFFF.  Anyone have a different opinion?
> 
> So this would break code that depends on ‘ucs-insert’ throwing
> this range error.  Is there a lot of code like that in the wild?

If there is such a code, it is already broken, because a character in
Emacs can really have values up to #x3FFFFF.

> Regardless, it feels wrong to discard this check.

Can you explain why?