Re: log --graph draws an orphaned branch with parents

From: herr.kaste <herr.kaste@gmail.com>
Date: Nov 3, 2026, 19:25 UTC
Message-ID: <CAFzd1+5s6V+YC3onNjYQmxRPVnsMROpsVi=qy1mg2=LOAnU+gg@mail.gmail.com>
In-Reply-To: <CAFzd1+4Jx_sWvMrV10gi9400BBNJOUXW0WwsypiM7yCh5x8fow@mail.gmail.com>

Finally had time for a repro (tested with git 2.56.0.windows.3):

sh git init -q -b main repro && cd repro export GIT_COMMITTER_DATE="@1700000000 +0000" GIT_AUTHOR_DATE="@1700000000 +0000" git commit -q --allow-empty -m B git switch -q -c topic git commit -q --allow-empty -m T git switch -q --orphan orphan git commit -q --allow-empty -m R git merge -q --allow-unrelated-histories --no-ff -m M main git log --graph --oneline --all

Actual output:

*   40a81a9 M
|\
 \ |
  * | 1d9120a R
 /
| * 5a29a85 T
|/
* f1cd12c B

With --no-graph-indent:

*   40a81a9 M
|\
* | 1d9120a R
 /
| * 5a29a85 T
|/
* f1cd12c B

Regards Caspar

Am Di., 13. Okt. 2026 um 21:00 Uhr schrieb herr.kaste <herr.kaste@gmail.com>:

Show 66 quoted lines

>
> Hi!  I have the following:
>
> Checkout https://github.com/packagecontrol/thecrawl.git then draw the graph
>
> $ git log --graph --all --oneline
>
> a few pages down, (I don't have a more minimal reproduction, --all is required)
> I see
>
> What happened? (Actual behavior)
>
> * | | 03b117815 Changed metadata of `Modelines`
> * | | 30f679f1f Bulk edit
>  \ | |
>   * | | 5a2cecdd9 Initial revision
>  / /
> | | * 6062ecf4f (origin/feat/compare-registries) Add script to compare
> two registries
> | |/
> | * 8f034813a Clarify fatal crawl skip logs
>
> 5a2cecdd9 is actually the birth of an orphaned branch, gitk also shows
> it like that.
>
> What did you expect to happen? (Expected behavior)
>
> E.g. something like this:
>
> ● | | 03b117815 Changed metadata of `Modelines`
> ● | | 30f679f1f Bulk edit
> ● | | 5a2cecdd9 Initial revision
>  / /
> | | ● 6062ecf4f (origin/feat/compare-registries) ...
> | |/
> | ● 8f034813a Clarify fatal crawl skip logs
>
> What's different between what you expected and what actually happened?
> An obvious drawing error, 5a2cecdd9 is drawn as if it had parents, and
> the rightmost lane goes to nirvana.
>
> [System Info]
> git version:
> git version 2.56.0.windows.2
> cpu: x86_64
> built from commit: cc4dbf752a05efdc0e04e71fd3e8110d11bdd35c
> sizeof-long: 4
> sizeof-size_t: 8
> shell-path: D:/git-sdk-64-build-installers/usr/bin/sh
> rust: disabled
> feature: fsmonitor--daemon
> gettext: enabled
> libcurl: 8.22.0
> OpenSSL: OpenSSL 3.5.9 29 Sep 2026
> zlib: 1.3.2
> SHA-1: SHA1_DC
> SHA-256: SHA256_BLK
> default-ref-format: files
> default-hash: sha1
> uname: Windows 10.0 26200
> compiler info: gnuc: 16.2
> libc info: no libc information available
> $SHELL (typically, interactive shell): C:\Dev\Git\usr\bin\bash.exe
>
> Regards
> Caspar Duregger