Variable: ido-enable-prefix
ido-enable-prefix is a customizable variable defined in ido.el.gz.
Value
nil
Documentation
Non-nil means only match if the entered text is a prefix of file name.
This behavior is like the standard Emacs completion.
If nil, match if the entered text is an arbitrary substring.
Value can be toggled within Ido using ido-toggle-prefix.
Source Code
;; Defined in /usr/src/emacs/lisp/ido.el.gz
(defcustom ido-enable-prefix nil
"Non-nil means only match if the entered text is a prefix of file name.
This behavior is like the standard Emacs completion.
If nil, match if the entered text is an arbitrary substring.
Value can be toggled within Ido using `ido-toggle-prefix'."
:type 'boolean)