Adjusted logic in query_before_text() to handle big tile mode. query_after_text...

diff --git a/src/main-cocoa.m b/src/main-cocoa.m
index e4b4834..6e930be 100644 (file)
--- a/src/main-cocoa.m
+++ b/src/main-cocoa.m
@@ -2352,7 +2352,11 @@ static void query_before_text(
             */
            break;
        } else if (prc->cell_changes[i].change_type == CELL_CHANGE_NONE) {
-           /* It has not changed so inquire what it is. */
+           /*
+            * It has not changed (or using big tile mode and it is within
+            * a changed tile but is not the left cell for that tile) so
+            * inquire what it is.
+            */
            TERM_COLOR a[2];
            char c[2];
 
@@ -2365,6 +2369,17 @@ static void query_before_text(
                 */
                break;
            }
+           if (use_bigtile && i > 0) {
+               Term_what(i - 1, iy, a, c);
+               if (use_graphics && (a[0] & 0x80) && (c[0] & 0x80)) {
+                   /*
+                    * It is the right cell of a location rendered with a tile.
+                    * Do not want to modify its contents so the clipping and
+                    * rendering region can not be exteded.
+                    */
+                   break;
+               }
+           }
            /*
             * It is unchanged text.  A character from the changed region
             * may have extended into it so render it to clear that.