Add filter ability to picker

[pickfire]

Inspired by doom emacs. Able to filter picker options multiple times using ctrl-space.

[pickfire]

This is assuming we merged the other pull request I sent.

[archseer]

Quite cool. Is there a way to clear current filters? Does emacs also display currently applied filters somehow?

[pickfire]

Quite cool. Is there a way to clear current filters? Does emacs also display currently applied filters somehow?

Doom emacs does, not sure about emacs. Not sure if there is a way to clear filter. It is not very discoverable for this.

I don't remember where I find this but I believe it's ivy. The behavior is based on shift space to filter, I can't find it in the README.org for ivy though, not sure where I saw this but I use it quite often, not sure how to clear it either. Some other interesting keys that I use quite often.

• spc ' to resume last search (files, buffer, text search, any search stuff... exact resume)
• ctrl-space while searching you can preview the file under the text and keep the search up

I can't do shift space for this since helix can't seemed to recognize it. Usually to reset this I will just search again, I wish there is an invert search thing, like just blacklist instead of whitelist but I don't know if such keys exists.

Does emacs also display currently applied filters somehow?

Not sure about emacs again, probably it's ivy in doom emacs. I don't see the filters applied, but even if it does I won't find it useful since I am the one that typed in the filters.

[robinvd]

That preview keybinding sounds nice. A similar idea could be what they do with https://github.com/nvim-telescope/telescope.nvim. A preview next to the picker

[vv9k]

Does emacs also display currently applied filters somehow?

Not sure about emacs again, probably it's ivy in doom emacs. I don't see the filters applied, but even if it does I won't find it useful since I am the one that typed in the filters.

Personally I would find it much more convenient to be able to see the filters I entered, especially when looking for something more complex.

[pickfire]

That preview keybinding sounds nice. A similar idea could be what they do with https://github.com/nvim-telescope/telescope.nvim. A preview next to the picker

Yeah, no idea how to do that yet. At least it is not annoying enough for me to work on this yet.

Personally I would find it much more convenient to be able to see the filters I entered, especially when looking for something more complex.

The issue is even with a filter it isn't very helpful. Imagine we are doing fuzzy search, so the filter is not an exact filter, searching .md will give results that does not contain .md which could be a typo. That is why I didn't add it now, we could add it later but I don't see a good usecase for fuzzy search. But yeah, in doom emacs there is an option to say if we want fuzzy search or exact search, maybe once we a an exact search runtime option we could have this.

@archseer Is there anything that I need to change for this patch to be merged?

I am thinking maybe later I might change it from shift-space to ctrl-i which means include and ctrl-e which means exclude (or we could have an F1 button to show info box?), I wish there is an exclude because in some cases I want to exclude some stuff.

[archseer]

There's a conflict in ui/prompt.rs, looks fine otherwise