Fzf: After processing command for fzf-vim plugin

[nitwof]

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I've created a simple application for adding icons to files:
https://github.com/NightWolf007/izer

To use it with fzf from shell i just need to run this:

export FZF_DEFAULT_PREVIEW="fd --type file | izer iconize -f=nerd -c"
fzf --preview 'bat $(izer deiconize {})' | izer deiconize

And it's ok, but things get complicated in fzf-vim plugin.

It would be nice to have an option in fzf-vim plugin to provide a post fzf command,
like izer deiconize. That will substitute this command in pipe after running fzf.

If there are any other ideas to implement feature, let's discuss.

[junegunn]

We already have sink (or sink*) for post-processing the output.

call fzf#run(fzf#wrap({
  \ 'source': 'ls | sed "s/^/>> /"',
  \ 'sink': {line -> execute('e '. line[3:])
\ }}))

And you can override the :Files command to use your program by redefining it with a custom sink function like so in a similar manner:

function! MySink(lines)
  " Trim the prefix except the first line which is the name of the key pressed (--expect)
  let a:lines[1:] = map(a:lines[1:], {_, line -> line[3:]})

  " Then reuse the default sink function fzf#wrap generates
  call fzf#wrap()['sink*'](a:lines)
endfunction

command! -bang -nargs=? -complete=dir Files
  \ call fzf#vim#files(<q-args>, {'source': 'ls | sed "s/^/>> /"', 'sink*': function('MySink')}, <bang>0)

Note that I explicitly specified source option instead of setting FZF_DEFAULT_COMMAND (there's no such thing called FZF_DEFAULT_PREVIEW by the way).

I hope this answers your question.

[tbrodbeck]

Hey guys! I just tried to reproduce this workflow. The only thing that does not work for me is the color information. The icons in fuzzy find look like this: [38;5;255m[0m iconful/iconful
after applying fd --type file | izer iconize -f=nerd -c | fzf --preview 'bat $(izer deiconize {})' | izer deiconize

When I do not use fzf the icon colors are displayed in my iterm using zsh (latest versions).

@NightWolf007 @junegunn , I would appreciate any hint!

[nitwof]

Hi, @tbrodbeck! Looks like fzf doesn't recognize support of 256 gui colors in your terminal. Try to add --ansi option to fzf command. For example:

fd --type file | izer iconize -f=nerd -c | fzf --ansi --preview 'bat $(izer deiconize {})' | izer deiconize

If it will help, you can add this option as default by adding environment variable into your rc file:

export FZF_DEFAULT_OPTS="--ansi"

I hope this will help you.