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-rw-r--r--lisp/emacs-lisp/rx.el13
1 files changed, 8 insertions, 5 deletions
diff --git a/lisp/emacs-lisp/rx.el b/lisp/emacs-lisp/rx.el
index 86673441fe7..b94ac57eca1 100644
--- a/lisp/emacs-lisp/rx.el
+++ b/lisp/emacs-lisp/rx.el
@@ -1,6 +1,6 @@
;;; rx.el --- sexp notation for regular expressions
-;; Copyright (C) 2001 Free Software Foundation, Inc.
+;; Copyright (C) 2001, 03, 2004 Free Software Foundation, Inc.
;; Author: Gerd Moellmann <gerd@gnu.org>
;; Maintainer: FSF
@@ -799,14 +799,17 @@ CHAR
`(repeat N M SEXP)'
matches N to M occurrences of what SEXP matches.
+`(backref N)'
+ matches what was matched previously by submatch N.
+
`(eval FORM)'
- evaluate FORM and insert result. If result is a string,
- `regexp-quote' it.
+ evaluate FORM and insert result. If result is a string,
+ `regexp-quote' it.
`(regexp REGEXP)'
- include REGEXP in string notation in the result."
+ include REGEXP in string notation in the result."
- `(rx-to-string ',regexp))
+ (rx-to-string regexp))
(provide 'rx)