GNU bug report logs - #78983
30.1; Strange reference to "Emacs 10.31" in fileio.c

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Message #8 received at 78983 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Ulrich Müller <ulm <at> gentoo.org>
Cc: 78983 <at> debbugs.gnu.org
Subject: Re: bug#78983: 30.1; Strange reference to "Emacs 10.31" in fileio.c
Date: Wed, 09 Jul 2025 20:41:45 +0300

> From: Ulrich Müller <ulm <at> gentoo.org>
> Date: Wed, 09 Jul 2025 18:43:36 +0200
> 
> Fexpand_file_name has another copy below it in an #if 0 ... #endif
> block, with the following comment:
> 
> /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION!
>    This is the old version of expand-file-name, before it was thoroughly
>    rewritten for Emacs 10.31.  We leave this version here commented-out,
>    because the code is very complex and likely to have subtle bugs.  If
>    bugs _are_ found, it might be of interest to look at the old code and
>    see what did it do in the relevant situation.
> 
>    Don't remove this code: it's true that it will be accessible
>    from the repository, but a few years from deletion, people will
>    forget it is there.  */
> 
> Maybe I am missing something, but I believe there never was an
> Emacs 10.31. Version numbers went from 1.1 to 1.12; then the first
> component was dropped and versions continued from 13.
> 
> So I looked into the history: The commented-out code existed already
> in version 19.7 (but not in 18.59). It was then removed on 2001-10-22
> and restored on 2001-10-25 in commit 4887597a1c52 by Eli, who also
> added the above comment.
> 
> tl;dr Could the version reference be changed to "Emacs 19"?

Why is the version important?

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