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From: ok@.cs.mu.oz (Richard O'Keefe)
Newsgroups: comp.lang.c
Subject: Re: ReadKey like Function in C
Summary: VMS editing without getch()
Message-ID: <1979@munnari.oz.au>
Date: 30 Aug 89 09:36:28 GMT
References: <148@trigon.UUCP> <225800206@uxe.cso.uiuc.edu> <3180@scolex.sco.COM> <3802@buengc.BU.EDU>
Sender: news@cs.mu.oz.au
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In article <3802@buengc.BU.EDU>, bph@buengc.BU.EDU (Blair P. Houghton) writes:
> No.  The real biggie is editors.
> What I want to know is, how does EDT work, if VMS can't handle
> character-at-a-time devices.

When SYS$GET() reads a record from a terminal, the record may be terminated
by CRLF **or by an escape sequence** (there are a couple of other cases).
EDT is driven by the keypad, and those keys send escape sequences.
Think of it as every record being <text> <edit command>.