tabline labels customization

[arcxio]

Contributing guidelines

• [X] I have read CONTRIBUTING.md
• [X] I have read CODE_OF_CONDUCT.md

Module(s)

mini.tabline

Description

HI! Thought it'd be more convenient to show buffer IDs in tabline's tabs, so that I could access them directly with :b. Unfortunately, as I saw from the code tabline doesn't allow that kind of scripting right now. I realize that kind of preference may be odd, so instead of suggesting that as a feature, I think tabline would benefit more from some kind of general label customization. Something like a function argument in setup that edits tab's label and is called from H.finalize_labels. It would also allow to show custom icons, e.g. for users who don't want to install devicons.

[echasnovski]

Thanks for the suggestion!

For a long time I was opposed on any kind of customization to 'mini.tabline', but today I think that exporting single format function might make sense. Together with the default_format() that implements current formatting this will make 'mini.tabline' more aligned with the more recent modules design (like 'mini.files', 'mini.pick', etc.).

This will also allow to solution for implement #824.

I'll take a look.

[arcxio]

@echasnovski Can I help out by submitting a PR?

[echasnovski]

@echasnovski Can I help out by submitting a PR?

If you want to, you surely can. But beware, that it will need to have proper testing and somewhat tedious documentation update. Nothing too complicated, but a lot of moving pieces involved.

Otherwise I hope to resolve this by the end of the week.

[echasnovski]

This now should be fixed on latest main (as promised, by the end of the week :) ).

There is now indeed a config.format for formatting labels along withdefault_format() which formats the same as was done before. Thanks for again for the issue and your effort in #888!