Eli Zaretskii writes: > Thanks, some comments: Thanks for commenting, as always. Please find attached an updated patch that should fix all your comments. > Do we really need the power of seq.el here? wouldn't mapcar do the job > nicely, since we have a simple list here? OTOH, if you do use seq.el, > why seq-filter and not seq-remove? I think mapcar won't work since the returned list is the same length as its input. seq-remove seems better indeed. > This test will fail when we remove the obsolete option, right? How > can we come up with a test that doesn't suffer from such maintenance > problems? This option is only defined in this file for testing purposes, and should never be removed. I've clarified this in its docstring and added a high version number.