[dir-locals] Use llbuild style for C files.

Author: ddunbar

.dir-locals.el

@@ -19,6 +19,17 @@
           (require 'llbuild-project-settings))))
 
  (c++-mode
+  ;; Load the llbuild style, if available.
+  ;;
+  ;; We have to do deferred loading of the style like this (instead of just
+  ;; setting the c-file-style variable, so that this works even when we are
+  ;; auto-loading llbuild-project-settings. Otherwise, that would fail since
+  ;; dir-locals evaluates the variables before it evaluates the eval list.
+  (eval .
+        (if (assoc "llbuild" c-style-alist)
+            (c-set-style "llbuild"))))
+
+ (c-mode
   ;; Load the llbuild style, if available.
   ;;
   ;; We have to do deferred loading of the style like this (instead of just