ido-magic-backward-char
ido-magic-backward-char is an interactive compiled Lisp function in `ido.el
'.
(ido-magic-backward-char ARG)
Move backward in user input or perform magic action.
If no user input is present, or at start of input, perform magic actions:
C-x C-f C-b switch to `ido-switch-buffer'.
C-x C-d C-b switch to `ido-switch-buffer'.
C-x d C-b switch to `ido-switch-buffer'.
C-x C-b C-b fallback to non-Ido `switch-to-buffer'.