Editing in Insert State

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.