A gh extension to aim to be a replacement of hub compare.

$ gh extension install kyanny/gh-browse-compare

$ gh browse-compare v1.0.0..main
$ gh browse-compare v1.0.0...main

You may want to add an alias.

$ gh alias set compare 'browse-compare'

This extension is an experimental implementation, so that it does not validate the command line argument and error handling is rough.

I created this extension rather than directly contributing to cli/cli to close cli/cli#4433 because I need to comply with this guidance. If I get a positive feedback, I am happy to submit a pull request to cli/cli.