Mention looking-back.

diff --git a/etc/NEWS b/etc/NEWS
index 63c4ec3..19f8160 100644 (file)
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -98,6 +98,11 @@ types any more.  Add -DUSE_LISP_UNION_TYPE if you want union types.
 \f
 * Changes in Emacs 21.4
 
++++
+** New function `looking-back' whether a regular expression matches
+the text before point.  Specifying the LIMIT argument bounds how far
+back the match can start; this is a way to keep it from taking too long.
+
 +++
 ** New functions `make-progress-reporter', `progress-reporter-update',
 `progress-reporter-force-update' and `progress-reporter-done' provide