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From: Patrick Stevens <>
Subject: Bug report: git apply --cached --reject
Date: Fri, 20 Nov 2020 14:21:38 +0000
Message-ID: <> (raw)


Below the fold is a `git bugreport`-generated report of a bug with `git
apply --cached --reject`, which I have reproduced in three different
environments. Summary: we do not correctly stage the removal of a file
if there is also an unrelated change that cannot be applied.

I don't think this behaviour is intended; in the report I give a couple
of variations which correctly do what I expected, and this one breaks
the semantics I expect, given the behaviour of those variations. I have
not tried to find the source of the bug.

Patrick Stevens


Thank you for filling out a Git bug report!
Please answer the following questions to help us understand your issue.

What did you do before the bug happened? (Steps to reproduce your issue)

Complete reproduction instructions:

mkdir badrepo && cd badrepo && git init
echo "start" >> file.txt && git add file.txt && git commit -m "Initial
git tag initialcommit
echo "another" >> another.txt && git add another.txt && git commit -m
"Something else"
git tag commit2
git rm another.txt && git rm file.txt && git commit -m "Remove both"
git tag commit3
git checkout initialcommit
git diff commit2 commit3 | git apply --reject --cached

What did you expect to happen? (Expected behavior)

We should be left detached at tag `initialcommit`, with the working copy
clean (i.e. containing only `file.txt`), and with the deletion of
`file.txt` staged.

What happened instead? (Actual behavior)

The final `git apply` correctly leaves us detached at tag
`initialcommit`, with a clean working copy, but incorrectly the deletion
of `file.txt` is not staged: the index is also clean.

What's different between what you expected and what actually happened?

The file `file.txt` should have had its deletion staged, because this is
part of the diff which could apply cleanly.

Anything else you want to add:

If I delete the `--cached` from the last line, the right thing happens:
the working copy has `file.txt` deleted in the working copy but the
deletion is not staged.
If instead I remove the `git rm another.txt`, then similarly the right
thing happens: now we end up with the deletion of `file.txt` staged (but
the working copy is correctly unchanged).

I have reproduced this using git version, as well as
2.29.2 built on Windows using the WSL and invoked through WSL, as well
as from the Mac HomeBrew install where I produced this bug report.

Please review the rest of the bug report below.
You can delete any lines you don't wish to share.

[System Info]
git version:
git version 2.29.2
cpu: x86_64
no commit associated with this build
sizeof-long: 8
sizeof-size_t: 8
shell-path: /bin/sh
uname: Darwin 18.7.0 Darwin Kernel Version 18.7.0: Mon Aug 31 20:53:32
PDT 2020; root:xnu-4903.278.44~1/RELEASE_X86_64 x86_64
compiler info: clang: 11.0.0 (clang-1100.0.33.17)
libc info: no libc information available
$SHELL (typically, interactive shell): /bin/zsh

[Enabled Hooks]

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-20 14:21 Patrick Stevens [this message]
2020-11-21 20:18 ` Junio C Hamano

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