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From: Ruvim <ruvim.pinka@gmail.com>
Newsgroups: comp.lang.forth
Subject: Re: Alternative for long parsing words
Date: Tue, 6 Aug 2024 14:12:00 +0400
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On 2024-08-05 18:33, Anton Ertl wrote:
> Ruvim <ruvim.pinka@gmail.com> writes:
>> I meant the word `[IF]` by itself, without connection with `WANT`.
> 
> Not necessarily a parsing word.  Could also be treated as something
> like another state (i.e., the text interpreter does the parsing, but
> does something different with the words than interpretation state or
> compile state.

> In every case, the interaction with other features is
> problematic; e.g., consider:
> 
> 0 [IF]
> ...
> \ ....
> \ [ELSE]
> \ ....
> cr .( you should see this according to the standard)
> [THEN]
> 
> (and the systems I tested actually comply with the standard requirements)
> 
> This behaviour might surprise users, especially in connection with
> nested [IF]s.  However, there have been few complaints, so it
> obviously is only a minor issue.


This problem is not endemic to Forth. It takes place in many other 
programming languages too.

For example, in "C++":

   /*

     // /* comment */ puts("you should see this");
     // the above command takes effect despite the line comment

   /* other comment */


A rule of thumb: the one who gains control first wins.


--
Ruvim