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bug#2136: cleanup: Fresume_tty and Fsuspend_tty


From: Eli Zaretskii
Subject: bug#2136: cleanup: Fresume_tty and Fsuspend_tty
Date: Sun, 01 Feb 2009 00:00:15 +0200

> Date: Sat, 31 Jan 2009 13:22:16 -0800 (PST)
> From: Dan Nicolaescu <dann@ics.uci.edu>
> Cc: 2136@emacsbugs.donarmstrong.com
> 
> Can you have multiple ttys in MSDOS?

No, of course not.  Not if by ``tty'' you mean an interactive
terminal.

> Otherwise suspend-frame won't call supend-tty.

It can be tricked into doing that, since the test in controlling-tty-p
is very naive.

>   >  For resume-tty, I just invoked it directly.
> 
> See above, this function only makes sens when using multiple ttys. 

If you mean the full functionality, then yes, I agree.  However, since
the current uses of these two functions are so few, I cannot yet say
that having them not fboundp will or won't do harm for the DOS port.
For now, they are more or less no-ops, which certainly doesn't do any
harm, at least AFAICS.

On the other hand, keeping them out of the DOS build would mean the
same #ifdef's will have to stay, just in different places, which won't
make the sources more clean, IMO.






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