laravel/pint

--diff option do not compare changes from provided branch

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#361 opened on Mar 11, 2025

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help wanted

Description

Pint Version

1.21.1

PHP Version

8.3.1

Description

I am experiencing an issue with the --diff option.

Despite the fix provided in https://github.com/laravel/pint/releases/tag/v1.21.0, the issue is still producing and provide this :

Image

I tried to run command in local environment and in a github action, same effect. removing the option preset does not change the output.

Steps To Reproduce

pint --diff=main --preset laravel

Contributor guide

Tech stack
phplaravel
Domain
cli
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic PHP knowledgeFamiliarity with Laravel Pint
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the ` diff` option implementation in the Pint source code, specifically the command that handles the diff logic. Look at the previous fix from v1.21.0 to understand what was changed and why it might still be failing. Examine how the provided branch name is used in the diff comparison and whether the issue lies in parsing the argument or in the underlying git diff command.