(grep-mode-tool-bar-map): Check if tool-bar-map has been initialized

before setting it up.

diff --git a/lisp/progmodes/grep.el b/lisp/progmodes/grep.el
index 945c656e7d377d9a41371dcd6da2e661b5b9448a..295e2b29fabbc39ef6220b7f871e55c4cf40eff1 100644 (file)
--- a/lisp/progmodes/grep.el
+++ b/lisp/progmodes/grep.el
@@ -228,25 +228,28 @@ See `compilation-error-screen-columns'"
 `compilation-minor-mode-map' is a cdr of this.")
 
 (defvar grep-mode-tool-bar-map
-  (let ((map (butlast (copy-keymap tool-bar-map)))
-       (help (last tool-bar-map))) ;; Keep Help last in tool bar
-    (tool-bar-local-item
-     "left-arrow" 'previous-error-no-select 'previous-error-no-select map
-     :rtl "right-arrow"
-     :help "Goto previous match")
-    (tool-bar-local-item
-     "right-arrow" 'next-error-no-select 'next-error-no-select map
-     :rtl "left-arrow"
-     :help "Goto next match")
-    (tool-bar-local-item
-     "cancel" 'kill-compilation 'kill-compilation map
-     :enable '(let ((buffer (compilation-find-buffer)))
-               (get-buffer-process buffer))
-     :help "Stop grep")
-    (tool-bar-local-item
-     "refresh" 'recompile 'recompile map
-     :help "Restart grep")
-    (append map help)))
+  ;; When bootstrapping, tool-bar-map is not properly initialized yet,
+  ;; so don't do anything.
+  (when (keymapp (butlast tool-bar-map))
+    (let ((map (butlast (copy-keymap tool-bar-map)))
+         (help (last tool-bar-map))) ;; Keep Help last in tool bar
+      (tool-bar-local-item
+       "left-arrow" 'previous-error-no-select 'previous-error-no-select map
+       :rtl "right-arrow"
+       :help "Goto previous match")
+      (tool-bar-local-item
+       "right-arrow" 'next-error-no-select 'next-error-no-select map
+       :rtl "left-arrow"
+       :help "Goto next match")
+      (tool-bar-local-item
+       "cancel" 'kill-compilation 'kill-compilation map
+       :enable '(let ((buffer (compilation-find-buffer)))
+                 (get-buffer-process buffer))
+       :help "Stop grep")
+      (tool-bar-local-item
+       "refresh" 'recompile 'recompile map
+       :help "Restart grep")
+      (append map help))))
 
 (defalias 'kill-grep 'kill-compilation)