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Path: utzoo!decvax!tektronix!uw-beaver!cornell!jqj
From: jqj@cornell.UUCP (J Q Johnson)
Newsgroups: net.micro.pc
Subject: Re: ANSI.SYS
Message-ID: <130@cornell.UUCP>
Date: Mon, 26-Aug-85 07:33:11 EDT
Article-I.D.: cornell.130
Posted: Mon Aug 26 07:33:11 1985
Date-Received: Tue, 27-Aug-85 00:55:57 EDT
References: <514@baylor.UUCP>
Reply-To: jqj@cornell.UUCP (J Q Johnson)
Distribution: na
Organization: Cornell Univ. CS Dept.
Lines: 23
Xref: tektronix net.micro.pc:05440 
Summary: 

In article <514@baylor.UUCP> peter@baylor.UUCP (Peter da Silva) writes:
>Is there anyone out there that has an ANSI.SYS that's really ANSI? That is,
>it should support most of the ANSI escape sequences, in particular SET 
>SCROLLING REGION: sc=\E[%d,%dr.

It should be noted that while the DEC VT100 supports \E[%d;%dr to mean
SET SCROLLING REGION (note, NOT \E[%d,%dr which is not even ANSI format),
this is not a standard ANSI sequence.  The ANSI standard reserves the
sequences <ESC>[<params>x where x is a lowercase letter for private use.

Since DEC is the largest manufacturer of ANSI terminals, \E[...r meaning
SET SCROLLING REGION has become something of a de facto standard, of 
course.  However, it's the "feature" of VT100-compatible terminals that 
a compatibles maker most often seems to get wrong.

Instead of asking for SET SCROLLING REGION, people should ask for fast
implementations of INSERT LINE (\E[%dL), DELETE LINE (\E[%dM), settable
INSERT-REPLACE MODE (\E[4h and \E[4l), and DELETE CHARACTER (\E[%dP).

From da Silva's notation, he obviously wants something that will work well
with Unix termcap.  If so, then C/L I/D are actually preferable.  He 
shouldn't expect a VT100 emulator, since the PC can't easily support 
132-col mode.