Center cursor position after search in Vim

Question

I would like Vim to place my cursor vertically in the middle of screen after search. I have achieved that for *, #, n and N commands with the following lines in my vimrc:

nmap * *zz
nmap # #zz
nmap n nzz
nmap N Nzz

My question is: How to map / and ? the same way? In other words, I would like to position the cursor in the same way after some text has been found using the following commands:

/some-text-to-find-forward
?some-text-to-find-backward

Answer 1

Edit: Threw away my initial answer as it was too much of a kludge. Here's a much better solution.

function! CenterSearch()
  let cmdtype = getcmdtype()
  if cmdtype == '/' || cmdtype == '?'
    return "\<enter>zz"
  endif
  return "\<enter>"
endfunction

cnoremap <silent> <expr> <enter> CenterSearch()

The way this works is to remap Enter in command-line-mode to a custom expression.

The function performs the current search followed by zz if the command-line is currently in a search. Otherwise it just executes whatever command was being done.