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

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Message #231 received at 23425 <at> debbugs.gnu.org (full text, mbox):

From: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
To: Alan Mackenzie <acm <at> muc.de>
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: Re: bug#23425: master branch: `message' wrongly corrupts ' to curly
 quote.
Date: Wed, 7 Jun 2017 15:29:40 -0400

On 2017-06-07 12:50, Alan Mackenzie wrote:
> Hello, Clément.
> 
> On Mon, Jun 05, 2017 at 17:05:43 -0400, Clément Pit-Claudel wrote:
>> On 2017-06-05 16:37, Alan Mackenzie wrote:
>>>  How do you propose to prevent such puzzlement and anger in the
>>> future, if not by %` and %'?
> 
>> Note that this introduces a backwards compatibility issue, if not done carefully:
> 
>>   Debugger entered--Lisp error: (error "Not enough arguments for format string")
>>     message("%`woops%'")
>>     eval((message "%`woops%'") nil)
> 
> I think it would be done carefully!  Clearly, %` and %' would be format
> elements for which the count of necessary arguments would not be
> incremented.  Or, more concisely, we wouldn't count them.

Sorry, that's not what I was talking about.  The problem I was worrying about is that these new format constructs would raise exceptions in older versions of Emacs.

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