===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/style.c,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -r1.7 -r1.8
--- src/usr.bin/tmux/style.c	2015/05/07 11:42:56	1.7
+++ src/usr.bin/tmux/style.c	2015/09/14 11:34:50	1.8
@@ -1,4 +1,4 @@
-/* $OpenBSD: style.c,v 1.7 2015/05/07 11:42:56 nicm Exp $ */
+/* $OpenBSD: style.c,v 1.8 2015/09/14 11:34:50 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -251,4 +251,16 @@
 	}
 	if (gcp->attr != 0)
 		gc->attr |= gcp->attr;
+}
+
+/* Check if two styles are the same. */
+int
+style_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
+{
+	return gc1->fg == gc2->fg &&
+		gc1->bg == gc2->bg &&
+		(gc1->flags & ~GRID_FLAG_PADDING) ==
+		(gc2->flags & ~GRID_FLAG_PADDING) &&
+		(gc1->attr & ~GRID_ATTR_CHARSET) ==
+		(gc2->attr & ~GRID_ATTR_CHARSET);
 }