From: Andy Koppe <andy.koppe@gmail.com>
To: cygwin@cygwin.com
Subject: Re: MinTTY feature? Or bug?
Date: Thu, 29 Jan 2009 22:19:00 -0000 [thread overview]
Message-ID: <49820941.8090301@gmail.com> (raw)
In-Reply-To: <497D3B1F.7040006@veritech.com>
Lee D. Rothstein wrote:
> Interesting feature or bug of MinTTY that does not obtain with any other
> terminal emulator with which I'm familiar.
>
> To wit:
>
> If you have a running synchronous script or command to the screen and you
> type ^l (Ctrl-l) it will immediately clear the screen before the ongoing
> command terminates.
>
> My feeling is that it doesn't matter, but that the behavior is different
> from other virtual terminals.
I've had a look at this: it's a feature that MinTTY inherited from
PuTTY. PuTTY emulates features of a whole range of terminals from VT100
through to VT510, and also the so-called 'SCO ANSI' (from before SCO
became a dirty word).
Apparently the latter interprets the echoed ^L as an actual form feed,
whereas all the others just do a linefeed. (There's a separate sequence
for clearing the screen, which bash sends when it sees a ^L being typed.)
The default compatibility setting includes 'SCO ANSI', hence the
behaviour you're seeing. I'll take it out in the next release.
Andy
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prev parent reply other threads:[~2009-01-29 19:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-26 9:49 Lee D. Rothstein
2009-01-29 22:19 ` Andy Koppe [this message]
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