GNU bug report logs - #72554
31.0.50; misleading release information for 'always'

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Package: emacs; Reported by: Ulrich Mueller <ulm@HIDDEN>; dated Sat, 10 Aug 2024 11:18:02 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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Date: Sat, 10 Aug 2024 15:47:55 +0300
Message-Id: <86ed6wk0hw.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Ulrich Mueller <ulm@HIDDEN>
In-Reply-To: <uwmko8ttz@HIDDEN> (message from Ulrich Mueller on Sat, 10
 Aug 2024 14:07:20 +0200)
Subject: Re: bug#72554: 31.0.50; misleading release information for 'always'
References: <u1q2waar0@HIDDEN> <86frrck3jn.fsf@HIDDEN>
 <uwmko8ttz@HIDDEN>
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> From: Ulrich Mueller <ulm@HIDDEN>
> Cc: 72554 <at> debbugs.gnu.org
> Date: Sat, 10 Aug 2024 14:07:20 +0200
> 
> >>>>> On Sat, 10 Aug 2024, Eli Zaretskii wrote:
> 
> > help-fns--first-release-regexp is supposed to find only quoted names,
> > so the problem is not with common words.  I think it finds this in
> > NEWS.25:
> 
> >   *** New value 'always' for 'sh-indent-after-continuation'.
> >                 ^^^^^^^^
> 
> NEWS.26, too (twice):
> 
>   ** Option 'buffer-offer-save' can be set to new value, 'always'.
>                                                          ^^^^^^^^
>   When set to 'always', the command 'save-some-buffers' will always
>               ^^^^^^^^
>   offer this buffer for saving.
> 
> > So maybe we should reject matches that immediately follow "value" or
> > "values".  That won't reject all false positives, but it should be an
> > improvement, I think.

So we have more prefixes to filter out: "set to" as well.  And some
punctuation between "value" and a quoted symbol should be ignored.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#72554; Package emacs. Full text available.

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From: Ulrich Mueller <ulm@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#72554: 31.0.50; misleading release information for 'always'
In-Reply-To: <86frrck3jn.fsf@HIDDEN> (Eli Zaretskii's message of "Sat, 10 Aug
 2024 14:42:04 +0300")
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>>>>> On Sat, 10 Aug 2024, Eli Zaretskii wrote:

> help-fns--first-release-regexp is supposed to find only quoted names,
> so the problem is not with common words.  I think it finds this in
> NEWS.25:

>   *** New value 'always' for 'sh-indent-after-continuation'.
>                 ^^^^^^^^

NEWS.26, too (twice):

  ** Option 'buffer-offer-save' can be set to new value, 'always'.
                                                         ^^^^^^^^
  When set to 'always', the command 'save-some-buffers' will always
              ^^^^^^^^
  offer this buffer for saving.

> So maybe we should reject matches that immediately follow "value" or
> "values".  That won't reject all false positives, but it should be an
> improvement, I think.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#72554; Package emacs. Full text available.

Message received at 72554 <at> debbugs.gnu.org:


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Date: Sat, 10 Aug 2024 14:42:04 +0300
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From: Eli Zaretskii <eliz@HIDDEN>
To: Ulrich Mueller <ulm@HIDDEN>
In-Reply-To: <u1q2waar0@HIDDEN> (message from Ulrich Mueller on Sat, 10
 Aug 2024 13:16:35 +0200)
Subject: Re: bug#72554: 31.0.50; misleading release information for 'always'
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> From: Ulrich Mueller <ulm@HIDDEN>
> Date: Sat, 10 Aug 2024 13:16:35 +0200
> 
> "C-h f always RET" says:
> 
>    always is a byte-compiled Lisp function in ‘subr.el’.
>    [...]
> 
>      Probably introduced at or before Emacs version 25.1.
>      This function does not change global state, including the match data.
> 
> However, 'always' only appeared in Emacs 28, so that information is
> misleading when trying to write backwards compatible code.
> 
> (It's less of a problem when the version that is shown is greater than
> the actual first release, which I think happens more often.)
> 
> Not sure how to fix this. Maybe exclude common English words (which
> are likely to appear in NEWS* without being the name of a function)
> from scanning in help-fns.el?

help-fns--first-release-regexp is supposed to find only quoted names,
so the problem is not with common words.  I think it finds this in
NEWS.25:

  *** New value 'always' for 'sh-indent-after-continuation'.
                ^^^^^^^^

So maybe we should reject matches that immediately follow "value" or
"values".  That won't reject all false positives, but it should be an
improvement, I think.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#72554; Package emacs. Full text available.

Message received at submit <at> debbugs.gnu.org:


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From: Ulrich Mueller <ulm@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 31.0.50; misleading release information for 'always'
Date: Sat, 10 Aug 2024 13:16:35 +0200
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"C-h f always RET" says:

   always is a byte-compiled Lisp function in =E2=80=98subr.el=E2=80=99.
   [...]

     Probably introduced at or before Emacs version 25.1.
     This function does not change global state, including the match data.

However, 'always' only appeared in Emacs 28, so that information is
misleading when trying to write backwards compatible code.

(It's less of a problem when the version that is shown is greater than
the actual first release, which I think happens more often.)

Not sure how to fix this. Maybe exclude common English words (which
are likely to appear in NEWS* without being the name of a function)
from scanning in help-fns.el?
Acknowledgement sent to Ulrich Mueller <ulm@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#72554; Package emacs. Full text available.
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