Fix toggle-frame-fullscreen on w32 builds

* src/w32term.c (w32_read_socket): Set 'fullscreen' to 'maximized'
if Windows sends SIZE_MAXIMIZED and either the top or the left of
the frame is outside the screen.  (Bug#25542)

diff --git a/src/w32term.c b/src/w32term.c
index 1766b32514f101c38f8f12e4dba851b0969261a2..2669f29b560c520bc64021f3d17ed090f6167f6b 100644 (file)
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -5478,15 +5478,15 @@ w32_read_socket (struct terminal *terminal,
                  /* Windows can send us a SIZE_MAXIMIZED message even
                     when fullscreen is fullboth.  The following is a
                     simple hack to check that based on the fact that
-                    only a maximized fullscreen frame should have both
-                    top/left outside the screen.  */
+                    only a maximized fullscreen frame should have top
+                    or left outside the screen.  */
                  if (EQ (fullscreen, Qfullwidth) || EQ (fullscreen, Qfullheight)
                      || NILP (fullscreen))
                      {
                        int x, y;
 
                        w32_real_positions (f, &x, &y);
-                       if (x < 0 && y < 0)
+                       if (x < 0 || y < 0)
                          store_frame_param (f, Qfullscreen, Qmaximized);
                      }
                  }