Fix bug #16479 with client connections while TTY menu is open.

 src/term.c (read_menu_input): If the selected frame changes, exit
 the menu.
 (tty_menu_show): If the selected frame changes while we displayed
 a menu, throw to top level.

2 files changed, 17 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 98c890c97b4..89b4c06def1 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+2014-01-25  Eli Zaretskii  <eliz@gnu.org>
+
+        * term.c (read_menu_input): If the selected frame changes, exit
+        the menu.
+        (tty_menu_show): If the selected frame changes while we displayed
+        a menu, throw to top level.  (Bug#16479)
+
 2014-01-25  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * eval.c (Fsignal): Fix `debug' handling to match 2013-10-03 change.
diff --git a/src/term.c b/src/term.c
index 4d8da135f6e..0c40c2d16b9 100644
--- a/src/term.c
+++ b/src/term.c
@@ -3124,7 +3124,11 @@ read_menu_input (struct frame *sf, int *x, int *y, int min_y, int max_y,
       tty->showing_menu = 0;
       do_mouse_tracking = saved_mouse_tracking;
 
-      if (EQ (cmd, Qt) || EQ (cmd, Qtty_menu_exit))
+      if (EQ (cmd, Qt) || EQ (cmd, Qtty_menu_exit)
+          /* If some input switched frames under our feet, exit the
+             menu, since the menu faces are no longer valid, and the
+             menu is no longer relevant anyway.  */
+          || sf != SELECTED_FRAME ())
         return MI_QUIT_MENU;
       if (EQ (cmd, Qtty_menu_mouse_movement))
         mouse_get_xy (x, y);
@@ -3791,6 +3795,11 @@ tty_menu_show (struct frame *f, int x, int y, bool for_click, bool keymaps,
     case TTYM_IA_SELECT:
       break;
     case TTYM_NO_SELECT:
+      /* If the selected frame was changed while we displayed a menu,
+         throw to top level in order to undo any temporary settings
+         made by TTY menu code.  */
+      if (f != SELECTED_FRAME ())
+        Ftop_level ();
       /* Make "Cancel" equivalent to C-g unless FOR_CLICK (which means
          the menu was invoked with a mouse event as POSITION).  */
       if (! for_click)