Sink in quickfix with filename & linenum from fzf#vim#grep

[morphheus]

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I'd like to populate the quickfix list with line number from the output of a fzf#vim#grep command.

I'm using the command:

command! -bang FLines call fzf#vim#grep(
    \'grep -vnITr --color=always "^$"',
    \ 0, 
    \ {'options': '--reverse --prompt "FLines> "'})

to recursively grep all lines within the pwd. Therefore, I need to populate the quickfix list with both filepath and line number to accurately jump to the search results.

I tried to implement something similar in this comment, but I failed to get anywhere. For some reason, I can't do any introspection while inside build_quickfix_list: I can't echo or assign to a global variable to try to figure out how to break up a:lines in setqflist:

function! s:build_quickfix_list(lines)
  echom a:lines                        " Does not work?
  let g:tml_variable = cope(a:lines)   " Does not work?
  " TODO: split a:lines between filename, linenum and text
  call setqflist(map(copy(a:lines), '{ "filename": v:val, "lnum": <?>, "text": <?> }'))
  copen
  cc
endfunction

1. Why can't I echo / set global vars from this function?
2. Am I on the right track to set the quickfix list with filepath/linenum?

[arowe92]

I want this exactly! Has anyone figured out how to do this?

[arsham]

I hope this helps: this action calls this function to populate the quickfix list with selected items from fzf results.

This is written in lua, however it can be easily translated to VimL.

[x-yuri]

Why can't I echo / set global vars from this function?

By "can't" you mean what? Most likely s:build_quickfix_list doesn't get called. And if you pass a command, it receives only the first filename. But actually what you want works out of the box. You do :Rg [PATTERN], optionally filter the results, press Alt-A to select all the lines, then Enter, and a quickfix list with the results appears. It doesn't appear if you select only one line.