GNU bug report logs - #23425
master branch: `message' wrongly corrupts ' to curly quote.

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From: Alan Mackenzie <acm <at> muc.de>
To: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
Cc: Glenn Morris <rgm <at> gnu.org>, Paul Eggert <eggert <at> cs.ucla.edu>, 23425 <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: bug#23425: master branch: `message' wrongly corrupts ' to curly quote.
Date: Wed, 7 Jun 2017 20:33:34 +0000

Hello again, Clément.

On Wed, Jun 07, 2017 at 15:27:02 -0400, Clément Pit-Claudel wrote:
> On 2017-06-07 15:13, Alan Mackenzie wrote:
> > Rubbish!  What Clément pointed out is that the part of styled_format
> > which counts format constructs and argumnts would need to be modified.
> > This would be trivial.

> Uh? What I pointed out was that new code wouldn't work with old Emacsen.

> Maybe I misunderstood your proposal?  As far as I can tell, the change you propose will force me to write every `message' call like this in my packages:
 
> (if (< emacs-version 26)
>     (message "Hello, `world'!")
>   (message "Hello, %`world%'!"))

That would clearly be unacceptable.

> Am I missing something?

No, I don't think so.  But it is probably feasible to put advice on
`message' in older Emacsen.  This advice would strip the % from %` and
%'.

It should be borne in mind that the handling of ` and ' by `message' in
Emacs-25 is in any case incompatible with earlier versions of Emacs.

> Clément.

-- 
Alan Mackenzie (Nuremberg, Germany).

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