external widget in 21.2.38

External widget behavior is a bit better. Xm external client works entirely OK: just after calling (make-frame) external widget window begins responding to all mouse and keyboard events. Xt external client behaves the same way: mouse events from it reach xemacs, but keyboard events do not. Removing regular X frame by just closing its top-level window using window manager works normally. However, with external frame this is not the same. After doing so xemacs hangs like this: #0 0x821441f in _r_select () #1 0x80316a2b in _XWaitForReadable () from /usr/lib/libX11.so #2 0x80316f0e in _XRead () from /usr/lib/libX11.so #3 0x80317520 in _XReply () from /usr/lib/libX11.so #4 0x8031456a in XSync () from /usr/lib/libX11.so #5 0x81c7153 in expect_x_error () at xemacs-21.2/src/device-x.c:1069 #6 0x81d465b in x_delete_frame (f=0x8596c00) at xemacs-21.2/src/frame-x.c:2676 #7 0x81245dd in delete_frame_internal (f=0x8596c00, force=137163776, called_from_delete_device=0, from_io_error=9256) at xemacs-21.2/src/frame.c:1533 #8 0x812c6c6 in io_error_delete_frame () at xemacs-21.2/src/frame.c:1654 #9 0x80f440e in execute_internal_event (event=142460044) at xemacs-21.2/src/event-stream.c:2931 #10 0x80f6815 in Fdispatch_event (event=142460044) at xemacs-21.2/src/event-stream.c:4169 #11 0x809a4e8 in Fcommand_loop_1 () at xemacs-21.2/src/cmdloop.c:583 #12 0x809a786 in command_loop_1 () at xemacs-21.2/src/cmdloop.c:494 #13 0x80c2c1b in condition_case_1 () at xemacs-21.2/src/eval.c:1651 #14 0x809a8ef in command_loop_2 () at xemacs-21.2/src/cmdloop.c:256 #15 0x80c2ae0 in internal_catch () at xemacs-21.2/src/eval.c:1317 #16 0x8099d4e in initial_command_loop (load_me=9256) at xemacs-21.2/src/cmdloop.c:305 #17 0x80b4520 in sort_args (argc=1, argv=0x8047894) at xemacs-21.2/src/emacs.c:2253 #18 0x80b64dc in voodoo_free_hook () at xemacs-21.2/src/emacs.c:2682 #19 0x807be4b in _start () One can force _XReply () and XSync () to return by debugger and continue. Doing so causes XmuPrintDefaultErrorMessage to emit several `unexpected async reply' messages. Then xemacs hangs a bit later in a similar way: #0 0x821441f in _r_select () #1 0x80316a2b in _XWaitForReadable () from /usr/lib/libX11.so #2 0x80316f0e in _XRead () from /usr/lib/libX11.so #3 0x80317520 in _XReply () from /usr/lib/libX11.so #4 0x8031456a in XSync () from /usr/lib/libX11.so #5 0x81c7180 in x_error_occurred_p () at xemacs-21.2/src/device-x.c:1078 After forcing XSync () to return again it continues without visible flaws. X environment: x11 5, motif 1.2 (SCO xds 5.2.5h, SCO BaseX 5.1.1b)