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From: Gerry Jackson <do-not-use@swldwa.uk>
Newsgroups: comp.lang.forth
Subject: Re: single-xt approach in the standard
Date: Tue, 24 Sep 2024 09:10:14 +0100
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On 23/09/2024 18:02, Anton Ertl wrote:
> mhx@iae.nl  (mhx) writes:
>> On Mon, 23 Sep 2024 8:36:10 +0000,albert@spenarnc.xs4all.nl  wrote:
>>
>>> In article<vcq1e5$25spg$7@dont-email.me>,
>>> Ruvim<ruvim.pinka@gmail.com>  wrote:
>> [..]
>>>>    1 constant a
>>>>    1 constant b
>>>>    ' a ' b = .
> ...
>> Why? 'a' and 'b' are user defined words, '=' is a standard word,
>> and 'true' is the expected outcome.
> Are you sure?
> 
> [~:152648] iforth
> FORTH> 1 constant a  ok
> FORTH> 1 constant b  ok
> FORTH> ' a ' b = . 0  ok
> 
> I actually know of no system that outputs -1.
> 
> - anton

I know it's different but:

1 constant a
synonym b a
' a ' b = . \ displayed -1 in 5 out of 6 Forths I just tried, including 
GForth.

Comparing xt's is unsafe

-- 
Gerry