@item M-x multi-occur-in-matching-buffers @key{RET} @var{bufregexp} @key{RET} @var{regexp} @key{RET}
This function is similar to @code{multi-occur}, except the buffers to
search are specified by a regular expression that matches visited
-filenames. With a prefix argument, it uses the regular expression to match
+file names. With a prefix argument, it uses the regular expression to match
buffer names instead.
@item M-x how-many @key{RET} @var{regexp} @key{RET}