(cancel_mouse_face): New function. Code copied from

x_set_window_size, fixing a bug.
(x_set_window_size): Use cancel_mouse_face.
(XTread_socket): When frame size has changed, call cancel_mouse_face.

diff --git a/src/xterm.c b/src/xterm.c
index c85f79216c1c04c32d66a1099392b6e1332ab05d..434de4d5ff7934be4c7803725b9b3bca170a41e6 100644 (file)
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -2267,6 +2267,24 @@ clear_mouse_face (dpyinfo)
   dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
   dpyinfo->mouse_face_window = Qnil;
 }
+
+/* Just discard the mouse face information for frame F, if any.
+   This is used when the size of F is changed.  */
+
+cancel_mouse_face (f)
+     FRAME_PTR f;
+{
+  Lisp_Object window;
+  struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
+
+  window = dpyinfo->mouse_face_window;
+  if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f)
+    {
+      dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
+      dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
+      dpyinfo->mouse_face_window = Qnil;
+    }
+}
 \f
 static struct scroll_bar *x_window_to_scroll_bar ();
 static void x_scroll_bar_report_motion ();
@@ -3998,6 +4016,7 @@ XTread_socket (sd, bufp, numchars, expected)
                    {
                      change_frame_size (f, rows, columns, 0, 1);
                      SET_FRAME_GARBAGED (f);
+                     cancel_mouse_face (f);
                    }
 #endif
 
@@ -5099,7 +5118,6 @@ x_set_window_size (f, change_gravity, cols, rows)
 {
   int pixelwidth, pixelheight;
   int mask;
-  Lisp_Object window;
   struct x_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
 
   BLOCK_INPUT;
@@ -5173,13 +5191,7 @@ x_set_window_size (f, change_gravity, cols, rows)
      since it might be in a place that's outside the new frame size. 
      Actually checking whether it is outside is a pain in the neck,
      so don't try--just let the highlighting be done afresh with new size.  */
-  window = dpyinfo->mouse_face_window;
-  if (! NILP (window) && XFRAME (window) == f)
-    {
-      dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
-      dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
-      dpyinfo->mouse_face_window = Qnil;
-    }
+  cancel_mouse_face (f);
 
   UNBLOCK_INPUT;
 }