1 files changed, 1 insertions, 0 deletions
diff --git a/tmux.h b/tmux.h
index 5422c8eb..b8d1a1f5 100644
--- a/tmux.h
+++ b/tmux.h
@@ -642,6 +642,7 @@ enum utf8_state {
 #define GRID_FLAG_EXTENDED 0x8
 #define GRID_FLAG_FGRGB 0x10
 #define GRID_FLAG_BGRGB 0x20
+#define GRID_FLAG_SELECTED 0x40
 
 /* Grid line flags. */
 #define GRID_LINE_WRAPPED 0x1