Overlay shows changes in parent folder if a file with a second extension exists

By sabel2... on June 07, 2013 08:41 (imported from Google Code)

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What steps will reproduce the problem?

1. create a new repo
2. create a file foo.php
3. create a file foo.php.x
4. create a file .gitignore with content: foo.php
5. add/commit foo.php.x and .gitignore
6. enable "Unversioned files mark parent folder as modified"

What is the expected output? What do you see instead?

The folder should not be marked as changed.
When I commit, foo.php is ignored as it should be.

What version of TortoiseGit and msysgit are you using? On
what operating system?

TortoiseGit 1.8.3.0 (C:\Program Files\TortoiseGit\bin\TortoiseGitProc.exe)
git version 1.8.1.msysgit.1 (C:\Program Files (x86)\Git\bin)

Please provide any additional information below.

If I remove foo.php.x or rename it to bar.php.x everything works as expected.
Any ideas?