# HG changeset patch
# User Adam Chlipala <adam@chlipala.net>
# Date 1445193500 14400
# Node ID e46989ea4ca7a9b97e7df84681dd1a5d319ebbb8
# Parent  5940149cd11a4c496e7a56c6e6084644abd04962
Grandfathered into release: make urweb-mode keep working in Emacs 23

diff -r 5940149cd11a -r e46989ea4ca7 configure.ac
--- a/configure.ac	Sun Oct 18 10:50:59 2015 -0400
+++ b/configure.ac	Sun Oct 18 14:38:20 2015 -0400
@@ -1,5 +1,5 @@
 AC_INIT([urweb], [20151018])
-WORKING_VERSION=1
+WORKING_VERSION=0
 AC_USE_SYSTEM_EXTENSIONS
 
 # automake 1.12 requires this, but automake 1.11 doesn't recognize it
diff -r 5940149cd11a -r e46989ea4ca7 src/elisp/urweb-mode.el
--- a/src/elisp/urweb-mode.el	Sun Oct 18 10:50:59 2015 -0400
+++ b/src/elisp/urweb-mode.el	Sun Oct 18 14:38:20 2015 -0400
@@ -377,7 +377,11 @@
 (add-to-list 'auto-mode-alist '("\\.urs?\\'" . urweb-mode))
 
 ;;;###autoload
-(define-derived-mode urweb-mode prog-mode "Ur/Web"
+(defalias 'urweb-mode-derived-from
+  (if (fboundp 'prog-mode) 'prog-mode 'fundamental-mode))
+
+;;;###autoload
+(define-derived-mode urweb-mode urweb-mode-derived-from "Ur/Web"
   "\\<urweb-mode-map>Major mode for editing Ur/Web code.
 This mode runs `urweb-mode-hook' just before exiting.
 \\{urweb-mode-map}"