; * lisp/visual-wrap.el: use regexp-unmatchable

(cherry picked from commit 85faf907618798eb09f34ba49527827b0e4026bc)

diff --git a/lisp/visual-wrap.el b/lisp/visual-wrap.el
index 1cb49538eaea99ce364e66552c05acfdda6e6395..c23a886801df8dc88be8ba1d43fd821822ab50df 100644 (file)
--- a/lisp/visual-wrap.el
+++ b/lisp/visual-wrap.el
@@ -123,7 +123,7 @@ by `visual-wrap-extra-indent'."
           ;; actually modify the buffer, so this restriction doesn't
           ;; make much sense (and is positively harmful in
           ;; taskpaper-mode where paragraph-start matches everything).
-          (or (let ((paragraph-start "\\`\\'a"))
+          (or (let ((paragraph-start regexp-unmatchable))
                     (fill-context-prefix beg end))
                   ;; Note: fill-context-prefix may return nil; See:
                   ;; http://article.gmane.org/gmane.emacs.devel/156285