ido: Replacement

 
 6.2 Replacement
 ===============
 
 ‘ido-read-buffer’ and ‘ido-read-file-name’ have been written to be drop
 in replacements for the normal buffer and file name reading functions
 ‘read-buffer’ and ‘read-file-name’.
 
    To use ido for all buffer and file selections in Emacs, customize the
 variable ‘ido-everywhere’.