Doc fixes.

[bpt/emacs.git] / lisp / emacs-lisp / regexp-opt.el

diff --git a/lisp/emacs-lisp/regexp-opt.el b/lisp/emacs-lisp/regexp-opt.el
index 72e3c39..8c64327 100644 (file)
--- a/lisp/emacs-lisp/regexp-opt.el
+++ b/lisp/emacs-lisp/regexp-opt.el
@@ -234,7 +234,8 @@ Merges keywords to avoid backtracking in Emacs's regexp matcher."
 
 
 (defun regexp-opt-charset (chars)
-  "Return a regexp to match a character in CHARS."
+  "Return a regexp to match a character in CHARS.
+CHARS should be a list of characters."
   ;; The basic idea is to find character ranges.  Also we take care in the
   ;; position of character set meta characters in the character set regexp.
   ;;