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Re: [Qemu-devel] [PATCH] ncurses: resize console if required


From: Samuel Thibault
Subject: Re: [Qemu-devel] [PATCH] ncurses: resize console if required
Date: Tue, 29 Apr 2008 00:16:12 +0100
User-agent: Mutt/1.5.12-2006-07-14

Carlo Marcelo Arenas Belon, le Mon 28 Apr 2008 12:56:31 -0500, a écrit :
> On Mon, Apr 28, 2008 at 09:58:27AM +0100, Samuel Thibault wrote:
> > Hello,
> > 
> > Carlo Marcelo Arenas Belon, le Sun 27 Apr 2008 22:54:45 -0500, a écrit :
> > > + printf("\033[8;25;80t");
> > 
> > You can not just spit out escape sequences like this without know the
> > kind of terminal you're in, you know :)
> 
> my original patch was checking the TERM variable for xterm or rxvt but since
> CSI Window manipulation comes from dtterm I would expect most terminal
> emulators to support that, do you have one that does not?

My good old _real_ ampex232 TTY most probably doesn't (I can't check
right now).

> in the case of xterm with allowWindowOps = false the escape string gets just
> ignored with no visible output, so expected the same from a terminal that
> doesn't support it,

If it supports CSI sequences.

> > At least check the TERM environment variable for those kind you know
> > support it.  Also, this should probably go inside the curses_resize()
> > function, so that when the guest resizes to e.g. 80x50, the xterm window
> > gets resized too.
> 
> from my tests, while booting a linux guest, curses_resize will be called with
> a 66 x 3 geometry at least once,

When it goes in graphical mode, yes.

> and a first attempt to make the guest use a
> resized console of 80x50 didn't reflect correctly in the curses side either

Works fine for me.

> my intention with this patch was to propose a simple solution to this problem
> and hopefully get someone else with more experience in curses and terminal
> emulations intrigued enough to give it a more complete spin.

Ok.

Samuel




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