git log --invert-grep doesn't seem to work

[emanpal]

• [X ] I was not able to find an open or closed issue matching what I'm seeing

Setup

• Which version of Git for Windows are you using? Is it 32-bit or 64-bit?

$ git --version --build-options

git version 2.35.1.vfs.0.0
cpu: x86_64
built from commit: 16dbd919ecfd018cd2d5e4cee985b3155ad1e953
sizeof-long: 4
sizeof-size_t: 8
shell-path: /bin/sh
feature: fsmonitor--daemon

• Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit?

$ cmd.exe /c ver

Microsoft Windows [Version 10.0.25092.1000]

• What options did you set as part of the installation? Or did you choose the
  defaults?

# One of the following:
> type "C:\Program Files\Git\etc\install-options.txt"
> type "C:\Program Files (x86)\Git\etc\install-options.txt"
> type "%USERPROFILE%\AppData\Local\Programs\Git\etc\install-options.txt"
$ cat /etc/install-options.txt

Editor Option: VIM
Custom Editor Path:
Default Branch Option:
Path Option: Cmd
SSH Option: OpenSSH
Tortoise Option: false
CURL Option: OpenSSL
CRLF Option: CRLFAlways
Bash Terminal Option: MinTTY
Git Pull Behavior Option: Merge
Use Credential Manager: Enabled
Performance Tweaks FSCache: Enabled
Enable Symlinks: Disabled
Enable Pseudo Console Support: Disabled
Enable FSMonitor: Disabled

• Any other interesting things about your environment that might be related
  to the issue you're seeing?

NO

Details

• Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other

cmd

• What commands did you run to trigger this issue? If you can provide a
  Minimal, Complete, and Verifiable example
  this will help us understand the issue.

git.exe --no-pager log --author="\(gittrain\)" --invert-grep -1

• What did you expect to occur after running these commands?

one commit listed, whose author was not gittrain

• What actually happened instead?

one commit was listed, whos author was gittrain

• If the problem was occurring with a specific repository, can you provide the
  URL to that repository to help us with testing?

https://microsoft.visualstudio.com/DefaultCollection/OS/_git/os.2020

[dscho]

As per the documentation:

--invert-grep
Limit the commits output to ones with log message that do not match the pattern specified with --grep=<pattern>.

And --author=<pattern> is not a --grep pattern. While it is a regex, it does not grep through the commit message, and --invert-grep really is only about that.

Since Git for Windows comes with PCRE support, you could use a negative-lookahead pattern in conjunction with --perl-regexp to achieve what you want to achieve.