Editing changes in patch format with Jujutsu

3 days ago

The author wanted to rename a method in a Jujutsu VCS change but found LSP unreliable for Python.
Initial solutions included manual find/replace or using `jj absorb` with `--into`, both being suboptimal.
Git offers `git format-patch` and `git am` for editing patches, but Jujutsu lacks these commands.
Jujutsu's `jj diffedit` allows editing changes but is limited to line selection without content modification.
External merge tools like KDiff3 didn't work well for editing changes in Jujutsu.
A custom external tool was created to generate and edit patch files for Jujutsu changes.
The script un-applies the original diff and applies the edited version, handling read-only 'left' directories.
The tool was registered in Jujutsu's configuration file to be used with `jj diffedit --tool=patch`.
This solution allows editing patch files directly in an editor, updating the change with the modified patch.

Hasty Briefsbeta