When called interactively, it uses '.*' as FROM, which means
replace the whole name. Unless called with prefix argument, in
-which case the user is prompted for both FROM and TO."
+which case the user is prompted for both FROM and TO.
As each match is found, the user must type a character saying
what to do with it. Type SPC or `y' to replace the match,
DEL or `n' to skip and go to the next match. For more directions,
-type \\[help-command] at that time.
-"
+type \\[help-command] at that time."
(interactive
(let* ((fr
(if current-prefix-arg