bug#81489: 32.0.50; w32--terminal-is-conhost is nil in gui emacs.

Eli Zaretskii <[email protected]> Sat, 01 Aug 2026 13:39:58 +0300
Newsgroups gmane.emacs.bugs
Message-ID <[email protected]>
> Cc: [email protected]
> Date: Fri, 31 Jul 2026 18:36:02 +0300
> From: Eli Zaretskii <[email protected]>
> 
> > From: TAKAHASHI Yoshio <[email protected]>
> > Cc: [email protected]
> > Date: Fri, 31 Jul 2026 22:23:32 +0900
> > 
> > > Please try the new patch for characters.el below, which
> > > _replaces_ the previous one, i.e. it is relative to the current Git
> > > repository.  You need to rebuild Emacs after you modify characters.el.
> > 
> > Apply the new patch, rebuild, and it works as expected.  Thank you.
> 
> Thanks, I will install the changes soon.

Now done.

> > for my note:
> > . install Microsoft Windows Terminal from Microsoft Store, version 1.24.11911.0.
> > . set command prompt's font to "MS Gothic", and invoke "emacs -nw -Q a.el".
> > . buffer a.el draws cjk ambiguous char in 2 columns (MS Gothic),
> >   but Windoes Terminal treats it in 1 column.  
> > . with narrow cjk ambiguous char font, it works intuitively.
> 
> This is set up so the font used by the Windows Terminal by default
> produces correct results.  With the default font selected by the
> Windows Terminal, the CJK ambiguous characters take up only 1 column,
> not 2.  It would be good to be able to be sensitive to the font, but
> AFAIU it is not easy (or even impossible) to know which font is used
> by WT for CJK characters, and using MS Gothic for all of them makes
> little sense.
> 
> So I guess this feature is currently limited to the Windows Terminal's
> default font selection, and the default fonts of ConHost.
> 
> Maybe we should make cjk-ambiguous-chars-are-wide be a tristate
> instead of a boolean, with the 3rd value overriding the
> w32--terminal-is-conhost test.  This way, users who set up Windows
> Terminal to use a font that draws CJK ambiguous characters as 2-column
> could customize Emacs to do that.  But this is for Emacs 32, it's too
> late now to add such features.
> 
> Alternatively, one could call update-cjk-ambiguous-char-widths by
> hand.
> 
> 
> 
>