bug#61395: 28.2; bug-reference warning seems incorrect

[Basil Contovounesios via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Eli Zaretskii [2023-02-10 10:25 +0200] wrote:

>> From: Tom Tromey <tom@tromey.com>
>> Date: Thu, 09 Feb 2023 12:08:39 -0700
>> 
>> I got this warning while using bug-reference-prog-mode on a certain file
>> in gdb:
>> 
>> Warning (bug-reference): The value of ‘bug-reference-bug-regexp’
>> 
>>   "\\(\\b\\(?:[Bb]ug ?#?\\|[Pp]atch ?#\\|RFE ?#\\|PR [a-z+-]+/\\)\\([0-9]+\\(?:#[0-9]+\\)?\\)\\)"
>> 
>> in buffer "finish.exp" doesn’t conform to the contract specified by its
>> docstring.  The subexpression 1 should define the region of the
>> bug-reference overlay and cover all other subexpressions up to
>> subexpression 10. Disable showing Disable logging
>> 
>> 
>> However, this warning seems wrong to me.  If you examine the above
>> regexp, you'll see it does cover all the other subexpressions.
>> 
>> Perhaps it is mis-worded somehow and the actual problem is something
>> else?  It's worth noting here that this is the default value for this
>> regexp:
>> 
>> (defcustom bug-reference-bug-regexp
>>   "\\(\\b\\(?:[Bb]ug ?#?\\|[Pp]atch ?#\\|RFE ?#\\|PR [a-z+-]+/\\)\\([0-9]+\\(?:#[0-9]+\\)?\\)\\)"
>> 
>> In gdb we use this setting for bug-reference-url-format, in case this
>> matters somehow:
>> 
>> (bug-reference-url-format . "http://sourceware.org/bugzilla/show_bug.cgi?id=%s")
>
> Thanks, but could you perhaps post a recipe for reproducing the
> warning?  Based on your description, I couldn't understand how to
> reproduce it: which variables to change (with the single exception of
> bug-reference-url-format), and what should be the buffer text to
> trigger the warning.  Could you help me reproducing the problem, so I
> could investigate it and see how to fix it?

Copying in Tassilo who worked on this stuff ahead of Emacs 28.

Thanks,

-- 
Basil