Git Bisect Guide

ChatGPT 3.5.

Here's a step-by-step guide with the commands to perform the process of bisecting using git bisect:

1. Start Bisecting:

   • Specify the known "good" commit:

     git bisect start
     git bisect good <good_commit>

   • Specify the known "bad" commit (or HEAD if the bug is present in the latest commit):

     git bisect bad <bad_commit>

   Git will now check out a commit roughly halfway between the "good" and "bad" commits.

2. Test:

   • Test whether the bug is present in the current commit.

   • If the bug is present, mark the current commit as "bad":

     git bisect bad

   • If the bug is not present, mark the current commit as "good":

     git bisect good

   Git will then narrow down the search space and check out the next commit for testing.

3. Repeat:

   • Repeat the testing and marking process (steps 2) until Git identifies the commit that introduced the bug.

   • Git will automatically narrow down the search space by selecting commits between the "good" and "bad" commits.

4. Finish Bisecting:

   • Once Git identifies the specific commit that introduced the bug, it will output the commit hash.

   • You can then inspect the identified commit to understand what changes caused the bug.

   • To end the bisecting process and return to the original state, use:

     git bisect reset

These commands will guide you through the process of bisecting with git bisect, allowing you to efficiently identify the commit that introduced a bug in your codebase.