Bisect for finding bug-introducing commits in Git - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of git bisect?

git bisect helps you find the specific commit that introduced a bug by using a binary search approach.

beginner

What are the two key states you mark commits with during a bisect session?

You mark commits as good (no bug) or bad (bug present) to guide the search.

beginner

Which command starts a bisect session?

git bisect start begins the bisect process.

intermediate

How does git bisect narrow down the commit range?

It checks out the middle commit between known good and bad commits, letting you test and mark it, cutting the search space in half each time.

beginner

What command ends a bisect session and returns you to your original branch?

git bisect reset ends the bisect and restores your previous state.

What is the first step to use git bisect?

A Run <code>git commit</code>

B Run <code>git bisect reset</code>

C Run <code>git bisect start</code>

D Run <code>git merge</code>

You start a bisect session with git bisect start.

During bisect, how do you mark a commit where the bug is present?

A <code>git bisect bad</code>

B <code>git bisect good</code>

C <code>git bisect skip</code>

D <code>git bisect reset</code>

Mark commits with the bug as git bisect bad.

What does git bisect reset do?

A Starts bisecting

B Marks a commit as good

C Skips the current commit

D Ends bisect and returns to original branch

git bisect reset ends the bisect session and restores your original branch.

Why does git bisect use a binary search?

A To test every commit

B To quickly find the bug-introducing commit by halving the search space each time

C To merge branches faster

D To create new commits

Binary search halves the commits to test, speeding up finding the bad commit.

If you don't know if a commit is good or bad during bisect, what can you do?

A Mark it as <code>git bisect skip</code>

B Mark it as <code>git bisect good</code>

C Mark it as <code>git bisect bad</code>

D Reset bisect

You can skip uncertain commits with git bisect skip.

Explain how git bisect helps find the commit that introduced a bug.

Think about marking commits and how bisect cuts down the search.

Describe the commands you use during a bisect session and their purpose.

Focus on commands to start, mark commits, skip, and end bisect.