Delay with remapped q

Question

I've remapped q to :bp, but to get an instant response, I have to press it twice. Otherwise there's a two second delay. What could be causing this and how can I fix it?

function! NetrwMapping()
  noremap <buffer> q :bp<CR>
endfunction

Answer 1

This happens because Vim waits to see if you want to do q<letter> to start recording a macro (there are a couple other things too like q:). You can use the tm option to change the amount it waits(will apply to all maps), or remap it to another unused letter.