===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/grid.c,v
retrieving revision 1.106
retrieving revision 1.107
diff -u -r1.106 -r1.107
--- src/usr.bin/tmux/grid.c	2020/04/15 12:59:20	1.106
+++ src/usr.bin/tmux/grid.c	2020/05/16 14:53:23	1.107
@@ -1,4 +1,4 @@
-/* $OpenBSD: grid.c,v 1.106 2020/04/15 12:59:20 nicm Exp $ */
+/* $OpenBSD: grid.c,v 1.107 2020/05/16 14:53:23 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -211,19 +211,28 @@
 	return (0);
 }
 
-/* Compare grid cells. Return 1 if equal, 0 if not. */
+/* Check if two styles are (visibly) the same. */
 int
-grid_cells_equal(const struct grid_cell *gca, const struct grid_cell *gcb)
+grid_cells_look_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
 {
-	if (gca->fg != gcb->fg || gca->bg != gcb->bg)
+	if (gc1->fg != gc2->fg || gc1->bg != gc2->bg)
 		return (0);
-	if (gca->attr != gcb->attr || gca->flags != gcb->flags)
+	if (gc1->attr != gc2->attr || gc1->flags != gc2->flags)
 		return (0);
-	if (gca->data.width != gcb->data.width)
+	return (1);
+}
+
+/* Compare grid cells. Return 1 if equal, 0 if not. */
+int
+grid_cells_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
+{
+	if (!grid_cells_look_equal(gc1, gc2))
 		return (0);
-	if (gca->data.size != gcb->data.size)
+	if (gc1->data.width != gc2->data.width)
 		return (0);
-	return (memcmp(gca->data.data, gcb->data.data, gca->data.size) == 0);
+	if (gc1->data.size != gc2->data.size)
+		return (0);
+	return (memcmp(gc1->data.data, gc2->data.data, gc1->data.size) == 0);
 }
 
 /* Free one line. */