bugfix: live_grep with underlying 'grep'

lua/fzf-lua/previewer/builtin.lua

@@ -143,7 +143,7 @@ function Previewer:set_winopts(win)
 end
 
 local function set_cursor_hl(self, entry)
-    local lnum, col = tonumber(entry.line), tonumber(entry.col)
+    local lnum, col = tonumber(entry.line), tonumber(entry.col) or 1
     local pattern = entry.pattern or entry.text
 
     if not lnum or lnum < 1 then
@@ -309,6 +309,8 @@ function Previewer:display_entry(entry)
   else
     -- mark the buffer for unloading the next call
     self.preview_bufloaded = true
+    -- make sure the file is readable (or bad entry.path)
+    if not vim.loop.fs_stat(entry.path) then return end
     -- read the file into the buffer
     utils.read_file_async(entry.path, vim.schedule_wrap(function(data)
       if not vim.api.nvim_buf_is_valid(bufnr) then

lua/fzf-lua/providers/grep.lua

@@ -193,6 +193,7 @@ end
 M.grep_curbuf = function(opts)
   if not opts then opts = {} end
   opts.rg_opts = config.globals.grep.rg_opts .. " --with-filename"
+  opts.grep_opts = config.globals.grep.grep_opts .. " --with-filename"
   opts.filename = vim.api.nvim_buf_get_name(0)
   if #opts.filename > 0 then
     opts.filename = path.relative(opts.filename, vim.loop.cwd())