X11 connection problems

[Roland Illig]

Hi all,

I think I have solved the X11 connection problems with mc. Can you 
please review this patch, and tell me if it solves the so-called 
"OpenSSH bug"?

The file x11conn.c is my current development version, so please redirect 
stderr to some file for logging.

The testcase that did not work before, but now does, is the following.

1. Inside an X session, start a terminal emulator.
    Inside the terminal emulator, start GNU screen.
    Inside GNU screen, start the Midnight Commander.

    $ screen
    $ mc 2>mc.log

2. Detach GNU screen.

    (Press C-a d)

3. Shut down the X server.

4. On a console, reattach the GNU screen with mc inside.

    $ screen -r

5. Press some keys within mc.

    Before the patch, mc terminated here.
    After the patch it continues running.

Roland
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