From: anton@mips.complang.tuwien.ac.at   
      
   Gerry Jackson  writes:   
   >On 31/07/2024 08:47, albert@spenarnc.xs4all.nl wrote:   
   >> In article ,   
   >> Stephen Pelc   wrote:   
   >Here's a program that demonstrates a non-parsing TO:   
   >   
   >  VFX Forth 64 for Windows x64   
   >   © MicroProcessor Engineering Ltd, 1998-2023   
   >   
   >  Version: 5.43 [build 4238]   
   >  Build date: 9 November 2023   
   >   
   >  Free dictionary = 6731782 bytes [6574kb]   
   >   
   >111 value x x . 111  ok   
   >222 to cr .( Does TO parse? ) x x 222 = [if] .( No it doesn't!) [then]   
   >Does TO parse? No it doesn't! ok   
   >   
   >Using a flag means that x could be on another line or even in another file.   
   >   
   >You could argue that it's not a standard program because it contains a   
   >deliberate ambiguous condition   
      
   Exactly, it's not a standard program, and no particular behaviour is   
   specified in the standard for this program.   
      
   >so a parsing TO would fail in some way   
   >but it does demonstrate non-compliant behaviour.   
      
   Given that it's not a standard program and no particular behaviour is   
   prescribed, the behaviour of VFX is compliant for this program.   
      
   There may be some way to construct a compliant program using FIND,   
   SEARCH-WORDLIST, TRAVERSE-WORDLIST, or FIND-NAME, where VFX does not   
   behave compliantly, though.   
      
   - anton   
   --   
   M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html   
   comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html   
        New standard: https://forth-standard.org/   
      EuroForth 2024: https://euro.theforth.net   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)