path completion using ripgrep

[radiodee1]

Hi, I have this use case where I want to search for a path, and use ripgrep. I'd like to be able to hit a keymap combination and see the rg boxes on the screen and use rg to find the file I'm looking for, and then when I select it, instead of opening that file, having the path for the file inserted at the cursor.

I feel this might be useful when searching for things like hashtags in documents.

Is this possible?

[ibhagwan]

https://github.com/ibhagwan/fzf-lua?tab=readme-ov-file#insert-mode-completion

Set cursor on any path-like item and :FzfLua complete_path, for insert mode use keymaps as explained above.

[radiodee1]

Just to start with, I think this is a great plugin. The complete_path function does not use the ripgrep style search mechanism. If I use complete_file with grep style searching, when I finally select something, the file gets loaded into a buffer and I can edit it. That's not what I want. When I select something I just want the path string inserted in the first document. I hope this makes sense.

[ibhagwan]

For that you’d need to implement custom completion using the complete function:
https://github.com/ibhagwan/fzf-lua?tab=readme-ov-file#custom-completion

With custom completion any picker can complete anything.

[radiodee1]

Hi again. I'm really not much of a lua coder. This is what I've got so far.

vim.keymap.set({ "i" }, "<C-x><C-f>",
  function()
    require("fzf-lua").fzf_exec(
        function()
            require("fzf-lua").live_grep({
              -- cmd = "rg --files",
              winopts = { preview = { hidden = "nohidden" } },
              complete = true 
            })
          end
    , {
        exec_empty_query = true,
    }) end ,  { silent = true, desc = "Fuzzy"     }
    
)
 

This is fine, but it does something I don't want, which is to include all this extra stuff in the output. It prints the path of the file to my document, but it also prints the web devicon and the line number corresponding to the line the text shows up in the file. I would really like just the path info. Is there an easy way to do this??

[ibhagwan]

Yes, you can either disable icons (undesirable probably) or use a custom complete function and use return require'fzf-lua'.path.entry_to_file(selected[1]).path as the return value. I’m on my phone so might not be 100% free of typos, use vim.print(…) on any lua object to explore its properties (will show up in :messages).

[ibhagwan]

Btw, I’m not sure why are you running live grep inside an fzf_exec and not live grep directly? I’m probably missing something about your intent here.

[radiodee1]

that works like a charm, except the pasted path replaces all the text in that line, whereas I'd like it to be inserted at the cursor.

vim.keymap.set({ "i" }, "<C-x><C-f>",
         function()
            require("fzf-lua").live_grep({ 
              complete = function(selected, opts, line, col)
  
            return require'fzf-lua'.path.entry_to_file(selected[1]).path
        end

            })
          end
    , {}) 

[ibhagwan]

Correct the return value is a pair that replaces the entire line and sets the cursor (the second return val).

You have the existing line and column as parameters, use string.xxx to manipulate the line any ways you wish and return the transformed line instead of just the path, as second value you can use #line to set the cursor at the end.

Depending on what you want to achieve here’s how the default complete path behaves:

fzf-lua/lua/fzf-lua/complete.lua

Lines 67 to 78 in b59bb9a

	opts.complete = function(selected, o, l, _)
	-- query fuzzy matching is empty
	if #selected == 0 then return end
	local replace_at = col - #before
	local relpath = path.relative_to(path.entry_to_file(selected[1], o).path, opts.cwd)
	local before_path = replace_at > 1 and l:sub(1, replace_at - 1) or ""
	local rest_of_line = #l >= (col + #after) and l:sub(col + #after) or ""
	local resolved_path = opts._cwd and path.join({ opts._cwd, relpath }) or relpath
	return before_path .. resolved_path .. rest_of_line,
	-- this goes to `nvim_win_set_cursor` which is 0-based
	replace_at + #resolved_path - 2
	end

[radiodee1]

thank you.