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-rw-r--r--lisp/emacs-lisp/regexp-opt.el10
1 files changed, 5 insertions, 5 deletions
diff --git a/lisp/emacs-lisp/regexp-opt.el b/lisp/emacs-lisp/regexp-opt.el
index ab52003cdf7..c0921646d65 100644
--- a/lisp/emacs-lisp/regexp-opt.el
+++ b/lisp/emacs-lisp/regexp-opt.el
@@ -114,11 +114,11 @@ nil
necessary to ensure that a postfix operator appended to it will
apply to the whole expression.
-The optional argument KEEP-ORDER, if nil or omitted, allows the
-returned regexp to match the strings in any order. If non-nil,
-the match is guaranteed to be performed in the order given, as if
-the strings were made into a regexp by joining them with the
-`\\|' operator.
+The optional argument KEEP-ORDER, if non-nil, forces the match to
+be performed in the order given, as if the strings were made into
+a regexp by joining them with the `\\|' operator. If nil or
+omitted, the returned regexp is will always match the longest
+string possible.
Up to reordering, the resulting regexp is equivalent to but
usually more efficient than that of a simplified version: