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From: UNBCIC@BRFAPESP.BITNET
Newsgroups: comp.lang.forth
Subject: ZEN 15A
Message-ID: <9105240408.AA06205@ucbvax.Berkeley.EDU>
Date: 23 May 91 12:05:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: UNBCIC%BRFAPESP.BITNET@SCFVM.GSFC.NASA.GOV
Organization: The Internet
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Ok. So I decided to convert my full-screen block editor to ZEN. I didn't finish
the convertion but I found some interesting problems.

    The first problem (not a big deal) is -->. The second problem is AT-XY.
It's defined as DROP SPACES. I think it's better leave AT-XY out of ZEN than
defining it this way. The third problem, the one that stopped me is with 8-bit
characters.

    My editor is provided with an accent filter, so I can enter all portuguese
characters easily. Well, to make my program more legible, I did things like:

CHAR ^ CONSTANT _portuguese_name_of_the_accent_

But this don't work with ZEN. The CHAR leaves nothing on the stack, the accent
is ignored (not this, the >127 ones), and CONSTANT is ignored. The word after
constant is then interpreted, returning an error. I have two questions about
this:
1) What is happening?
2) Should this happen on an ANS Forth? May this happen on an ANS Forth? (BASIS
15, of course)

                              (8-DCS)
Daniel C. Sobral
UNBCIC@BRFAPESP.BITNET