Re: phantom version numbers?

On Feb 28, 2025, at 10:34, Steve Kargl <sgk@troutmask.apl.washington.edu> wrote:

> On Thu, Feb 27, 2025 at 09:02:48PM -0800, Mark Millard wrote:
>> Steve Kargl <sgk_at_troutmask.apl.washington.edu> wrote on
>> Date: Thu, 27 Feb 2025 18:52:17 UTC :
>> 
>>> IMHO, the solution is clearly wrong. INDEX-15 is only 
>>> valid for short period of time. Hmmm, it seems that
>>> the Porter's Handbook
>>> 
>>> https://docs.freebsd.org/en/books/porters-handbook/book/#versions
>>> 
>>> shows that __FreeBSD_version was changed to 1500030 on 2025-01-02.
>>> Newer numbers are not documented. My kernel is at 1500031 with
>>> a timestamp of
>>> 
>>> kern.version: FreeBSD 15.0-CURRENT #0 main-n275407-e736f6df1ec1:\
>>> Wed Feb 12 15:22:12 PST 2025
>>> 
>>> and INDEX-15 is from a system with 1500033. 'git blame' shows
>>> 
>>> 05dfaadde4ae0 (Jean-Sébastien Pédron 2024-12-22 19:10:23 +0100 76)\
>>> #define __FreeBSD_version 1500033
>>> 
>>> So, the timestamps don't make sense.
>> 
>> You are using a tools in ways that shows authorship dates instead of
>> commit dates:
> 
> That is certainly possible.  It is unfortunate the FreeBSD switch
> from svn to git, but that a horse of a different color.
> 
>> author Jean-Sébastien Pédron <dumbbell@FreeBSD.org> 2024-12-22 18:10:23 +0000
>> committer Jean-Sébastien Pédron <dumbbell@FreeBSD.org> 2025-02-19 20:39:46 +0000
> 
> % git log sys/param.h 
> 
> commit 05dfaadde4ae0f5d823836d5d849e3ba5ebdbf17
> Author: Jean-Sébastien Pédron <dumbbell@FreeBSD.org>
> Date:   Sun Dec 22 19:10:23 2024 +0100
> 
>    linuxkpi: Add `shrinker_alloc()` and `shrinker_free()`
> 
>    They are used by the DRM drivers in Linux 6.7.
> 
>    Bump `FreeBSD_version` because external drivers that use `struct
>    shrinker` will have to be recompiled.
> 
>    Reviewed by:    bz
>    Sponsored by:   The FreeBSD Foundation
>    Differential Revision: https://reviews.freebsd.org/D48747
> 
> So, the date here is completely useless and there is no indication
> of when the commit actually occurred.  As 'git log' should be an
> easy way to see the history of a file, why is the date the change
> was recorded in HEAD not displayed?


# git log --pretty=fuller

Shows the likes of:

commit <hash>
Author: <author>
AuthorDate: <author-date>
Commit: <committer>
CommitDate: <committer-date>

<title-line>

<full-commit-message>


For just the commit date/time sort of information, there is:

# git log --pretty=format:%cd # Example; the committer dates formats are:

%cd
committer date (format respects --date= option)

%cD
committer date, RFC2822 style

%cr
committer date, relative

%ct
committer date, UNIX timestamp

%ci
committer date, ISO 8601-like format

%cI
committer date, strict ISO 8601 format

%cs
committer date, short format (YYYY-MM-DD)

%ch
committer date, human style (like the --date=human option of git-rev-list(1))

===
Mark Millard
marklmi at yahoo.com