[PATCH] Cygwin: pty: Trigger redraw screen if ESC[?3h or ESC[?3l is sent.

Corinna Vinschen corinna-cygwin@cygwin.com
Fri Nov 15 12:09:00 GMT 2019

On Nov 14 20:51, Takashi Yano wrote:
> Hi Corinna,
> On Thu, 14 Nov 2019 10:35:41 +0100
> Corinna Vinschen wrote:
> > This is only correct if xterm hasn't been started with the c132 widget
> > resource set to 'true'.  This resource specifies whether the ESC[?3h
> > and ESC[?3l ESC sequences are honored or not.  The default is 'false'.
> > 
> > However, if you specify the c132 resource, or if you start xterm
> > with the commandline option -132, it will resize when these sequences
> > are sent.  And here's the joke: The resize also clears the screen
> > in xterm.
> Thanks for the information.
> > My question now is, does this change anything in terms of the below
> > code, or is it still valid as is?
> It still valid as is. Bacause, if -132 option is specified and the
> real sreen is cleared by ESC[?3h and ESC[?3l, mismatch does not occur.
> In this case, this patch tries to synchronize the real screen with
> the console screen buffer in spite that they are already synchronized,
> but there should be no side effects.

Great, thanks.  Patch pushed.


Corinna Vinschen
Cygwin Maintainer
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