- "Separator used for separating strings in `completing-read-multiple'.
-It should be a single character string that doesn't appear in the list of
-completion candidates. Modify this value to make `completing-read-multiple'
-use a separator other than `crm-default-separator'.")
+ "Separator regexp used for separating strings in `completing-read-multiple'.
+It should be a regexp that does not match the list of completion candidates.
+Modify this value to make `completing-read-multiple' use a separator other
+than `crm-default-separator'.")