[Show log of aaaa..bbbb] on sub directory shows logs on root directory

By route... on September 25, 2014 14:08 (imported from Google Code)

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What steps will reproduce the problem?

1. [Show log] on any sub directory in the working tree
2. Select any two commits on the [Log Messages] dialog
3. Right-click the one of selected commits and [Show log of aaaa..bbbb]

What is the expected output? What do you see instead?
Expected:
The logs between commit aaaa and commit bbbb on the SUB(current) directory show up.
Instead:
The logs between commit aaaa and commit bbbb on the ROOT directory show up.

What version of TortoiseGit and msysgit are you using? On
what operating system?
Windows Vista Business
TortoiseGit 1.8.11.0 (C:\Program Files\TortoiseGit\bin)
git version 1.9.4.msysgit.1 (C:\Program Files\Git\bin)

Please provide any additional information below.
[Show log] button on the [Changed Files] dialog also shows logs on the ROOT directory.
I sometimes use "tortoisegitproc /command:log /path:. /startrev:aaaa /endrev:bbbb" in command line to get expected logs.