command of vi?
(. is the redo command in vi. It redoes the last insertion/deletion.) As of Emacs 20.3, there is indeed a repeat command (C-x z) that repeats the last command. If you preface it with a prefix argument, the prefix arg is applied to the command. You can also type C-x ESC ESC (repeat-complex-command) to reinvoke commands that used the minibuffer to get arguments. In repeat-complex-command you can type M-p and M-n (and also up-arrow and down-arrow, if your keyboard has these keys) to scan through all the different complex commands you’ve typed. To repeat a set of commands, use keyboard macros. (See Info file `emacs’, node `Keyboard Macros’.) If you’re really desperate for the . command, use VIPER, a vi emulation mode which comes with Emacs, and which appears to support it. (See section 9.4 VIPER — vi emulation for Emacs.
