feat: path_shorten using extmarks

[ibhagwan]

I'm quite mind blown, this PR was one shot from a single prompt in opencode using subagents, the prompt:

  ┃  Can you take a look at issue #2517 in fzf-lua github repo and read the linked comment from discussion
  ┃  #2516 and see if you can come up with a PR to enable path_shorten using neovim extmarks?

I haven't reviewed the code yet, but my agents (3 different models) did and this is what they found:

Note it chose to use a different option as it affects the main fzf window only within neovim and can't be used in fzf-tmux so to use this you need to use winopts.path_shorten:

:FzfLua files winopts.path_shorten=true

Honestly, this is quite shocking, the level of understanding of a very intricate problem and solution from a two-liner prompt...

The review seems to be on-point too (which I'll soon push it's changes too).

[nenahp]

that's interesting. it seems the shorten parts can be highlighted correctly

maybe just not work well with fd --color=always

Tested it work with term ansi hl, I see the code conceal the part not coverted by path_shorten length, so it's a better solution.

[ibhagwan]

that's interesting. it seems the shorten parts can be highlighted correctly

maybe just not work well with fd --color=always

Tested it work with term ansi hl, I see the code conceal the part not coverted by path_shorten length, so it's a better solution.

I also tested with ANSI hl and it worked, also worked with path_shorten=2 (3,etc...)

Can also use nvim_set_decoration_provider with ephemeral extmark here. It will apply on redraw, so no need to clear marks manually on redraw. return false in on_win to filter non fzf win.

I'll let the AI fix it's own work let's see what it comes up with :-)

[ibhagwan]

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