Git bisect does not find commit introducing the bug

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Hi there,

According to the documentation "git bisect" is designed "to find the
commit that introduced a bug" .
I have found a situation in which it does not returns the commit I expected.
In order to reproduce the problem:

1. mkdir test; cd test;
git clone https://github.com/entbugger/git-bisect-issue.git
cd git-bisect-issue

The tag "v.bad" is one bad version and tag "v.good" is the first good
version. A good version is one having the line "FEATURE2" in
file1.txt, which was introduced in "v.good".

2. Copy test scripts to another folder to make sure they are not
overridden by 'git bisect'
cp *.sh ../
cd ..
./search-bug-git.sh

3. Run ./search-bug-git.sh to search for the commit introducing the
bug. It finds that the commit 04c6f4b9ed with the message "Feature 1"
is the first one introducing the bug.

First of all this is confusing, as this commit cannot be reached
starting from "v.good". Then I expected the commit with the message
"Introduce bug" to be returned by 'git bisect', as it is the first
commit  between "v.good" and "v.bad" that does not contain the line
"FEATURE2" in file1.txt, which is what I understand by the commit
"that introduced a bug" (cited from the manpage of git bisect).

Thanks for looking to this,

Best regards,
VG



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