In the previous article, Writing Lua in Nyagos to Simulate cmd.exe F1~F9 Functions, the F9 function key was rewritten so that it returns the most recent file name in the current folder. This feature is typically used after downloading a file in the browser, to immediately retrieve the downloaded file name from the command line, thus skipping the dir /od step and the need to manually select and copy.

nyagos.key.F9 = function(this)
  _iNewFilenameCounter = 1
  local _sFilename = nyagos.eval("ls -t *.* | head -n 1")

  if string.sub(_sFilename, -1) == "*" then
    _sFilename = _sFilename:sub(1, -2)
  end
  if string.find(_sFilename, " ") then
    _sFilename = '"' .. _sFilename .. '"'
  end
  nyagos.exec("echo " .. _sFilename .. " | clip")  -- convenient for copying
  this:call("KILL_LINE")
  this:replacefrom(1, _sFilename)
  this:call("BEGINNING_OF_LINE")
end

Next, add F10 or Ctrl+Z to select a file in the current folder via an fzf menu. Pressing Enter will return the file name and move the cursor to the very beginning:

-- file selection in current folder
-- | grep -v "^d" removes folders
function list_files(this)

  local _sQuery = this:lastword()
  local _sCmd = 'll | grep -v "^d" | fzf --cycle --tac --layout=reverse '
  if string.len(_sQuery) > 0 then
    _sCmd = _sCmd .. "--query=" .. _sQuery
  end
  -- -rw-a-- 114K Dec  3 12:08:15 Unconfirmed 8091.crdownload
  -- tr -s " " compresses multiple spaces into one, ensuring fields separated by spaces are parsed correctly
  _sCmd = _sCmd .. ' | tr -s " " | cut -d" " -f6-'
  --print("cmd=" .. _sCmd)
  local _sFilename = nyagos.eval(_sCmd)
  if _sFilename:match("%s") then  -- contains spaces
    _sFilename = '"' .. _sFilename .. '"'
  end
  nyagos.exec("echo " .. _sFilename .. " | clip")  -- convenient for copying
  this:replacefrom(1, _sFilename)
  this:call("BEGINNING_OF_LINE")
end

nyagos.key.F10 = list_files
nyagos.key.C_Z = list_files

1. 💡 Related Links

✅ Explanation article (Traditional Chinese): https://jdev.tw/blog/9169/
✅ Explanation article (English)
✅ Explanation article (Japanese)

#automation #lua #shell