Relevant Section

• https://docs.godotengine.org/en/stable/contributing/development/code_style_guidelines.html

You can apply ruff manually to one or more files with the following command:

ruff -l 120 <path/to/file(s)>

The Issue

This no longer works with recent versions of ruff (tested with v0.12.8).

error: 'ruff' requires a subcommand but one was not provided

There is also no longer a -l argument for the maximum line length.

error: unexpected argument '-l' found

The Fix

The new correct usage is:

ruff format --length-line 120 <path/to/file(s)>

• https://docs.astral.sh/ruff/configuration/#full-command-line-interface