Minibuffer can be edited similarly to Insert state, and you can switch
between Insert/Replace/Vi states at will.
Some users prefer plain Emacs feel in the Minibuffer. To this end, set
viper-vi-style-in-minibuffer to nil.
| C-v | Deprive the next char of its special meaning (quoting). |
| C-h | One char back. |
| C-w | One word back. |
| C-u | Back to the begin of the change on the current line. |