Rename UI_UPDATE as MOVE_UI_UPDATE

All the other constants named UI_* are special key names that can be
passed to midend_process_key(), but UI_UPDATE is a special return value
from the back-end interpret_move() function instead.  This renaming
makes the distinction clear and provides a naming convention for future
special return values from interpret_move().

1 files changed, 1 insertions, 1 deletions

diff --git a/lightup.c b/lightup.c
index 39ada9f..15e0a67 100644
--- a/lightup.c
+++ b/lightup.c
@@ -1954,7 +1954,7 @@ static char *interpret_move(const game_state *state, game_ui *ui,
     enum { NONE, FLIP_LIGHT, FLIP_IMPOSSIBLE } action = NONE;
     int cx = -1, cy = -1;
     unsigned int flags;
-    char buf[80], *nullret = UI_UPDATE, *empty = UI_UPDATE, c;
+    char buf[80], *nullret = MOVE_UI_UPDATE, *empty = MOVE_UI_UPDATE, c;
 
     if (button == LEFT_BUTTON || button == RIGHT_BUTTON) {
         if (ui->cur_visible)