Re: FORTH - How Does It Work?

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From	"Alex McDonald" <blog@rivadpm.com>
Newsgroups	comp.lang.forth
Subject	Re: FORTH - How Does It Work?
Date	Tue, 12 May 2015 14:08:41 +0100
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on 12/05/2015 13:20:55, Mark Wills wrote:
> On Monday, 11 May 2015 19:32:56 UTC+1, hughag...@gmail.com  wrote:
>>
>> All of this is nonsense! We shouldn't have any "ambiguous conditions or u
> ndefined semantics." It should just be an error to execute words like
> IF an d ; etc. in interpretation mode (STATE is zero). This is not
> ambiguous in t he sense that pretty much anything could happen and not
> the same thing ever y time --- this is an error in the sense that the
> system aborts with an err or message. Also, there is no reason to
> cripple FIND and ' so that it is an ambiguous condition if they are
> applied to a word that can't execute in in terpretation mode. FIND
> should just return the xt and a flag of 1 to indica te that it is
> immediate (all of these words such as IF etc. that currently are
> defined as "interpretation semantics for this word are undefined"
> shoul d just be defined as immediate and should just abort with an
> error message if they are used in interpretation mode). If the xt is
> given to EXECUTE and executed, it checks STATE and aborts if it is in
> interpretation mode but e xecutes if it is in compilation mode. I have
> explained the situation as it should be in one paragraph using plain
> English so that any novice should be able to understand.
> 
> Agree. It should be the business of the word itself to abort if
> invoked in the wrong the state. It is not the business of subordinate
> words such as ' and FIND.
> 

Have you read the spec for ' and FIND? I don't know where you are getting
this from, but neither ' nor FIND in any ANS Forth (in fact, in any Forth
I've heard of) do an ABORT if the word is found but has undefined
interpretation semantics. FIND returns at XT and a flag, or the original
string and a flag if not found; and ' returns the XT and only aborts if
the word is not found.

Thread

FORTH - How Does It Work? Jason Damisch <jasondamisch@yahoo.com> - 2015-05-04 09:44 -0700
  FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-04 10:21 -0700
    Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-04 11:00 -0700
      Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-05 03:03 -0700
      Re: FORTH - How Does It Work? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-05 11:31 +0000
    Re: FORTH - How Does It Work? lehs <skydda.barnen@gmail.com> - 2015-05-05 01:31 -0700
      Re: FORTH - How Does It Work? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-05 08:49 +0000
      Re: FORTH - How Does It Work? Lars Brinkhoff <lars.spam@nocrew.org> - 2015-05-05 11:16 +0200
      Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-05 02:33 -0700
  Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-04 08:49 -1000
    Re: FORTH - How Does It Work? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-04 19:13 +0000
      Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-04 20:35 +0100
        Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-04 10:43 -1000
        Re: FORTH - How Does It Work? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-05 08:52 +0000
          Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-05 10:54 +0100
            Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-05 10:56 +0100
      Re: FORTH - How Does It Work? "Rod Pemberton" <bork@lllljunkqwer.cpm> - 2015-05-04 20:01 -0400
        Re: FORTH - How Does It Work? Jason Damisch <jasondamisch@yahoo.com> - 2015-05-04 17:23 -0700
        Re: FORTH - How Does It Work? Jason Damisch <jasondamisch@yahoo.com> - 2015-05-04 17:34 -0700
          Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-05 00:25 -0700
            Re: FORTH - How Does It Work? Coos Haak <chforth@hccnet.nl> - 2015-05-05 12:41 +0200
          Re: FORTH - How Does It Work? "Rod Pemberton" <bork@lllljunkqwer.cpm> - 2015-05-05 03:31 -0400
            Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-05 08:41 +0100
        Re: FORTH - How Does It Work? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-05 11:36 +0000
    Re: FORTH - How Does It Work? "HAA" <someone@microsoft.com> - 2015-05-07 11:26 +1000
      Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-06 16:46 -1000
        Re: FORTH - How Does It Work? lehs <skydda.barnen@gmail.com> - 2015-05-07 00:06 -0700
        Re: FORTH - How Does It Work? "HAA" <someone@microsoft.com> - 2015-05-10 12:57 +1000
          Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-09 21:36 -0700
          Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-09 18:36 -1000
            Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-09 22:09 -0700
              Re: FORTH - How Does It Work? Walter Banks <walter@bytecraft.com> - 2015-05-10 13:38 -0400
                Re: FORTH - How Does It Work? Richard Owlett <rowlett@cloud85.net> - 2015-05-10 14:23 -0500
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-10 20:51 +0100
                Re: FORTH - How Does It Work? Coos Haak <chforth@hccnet.nl> - 2015-05-11 01:18 +0200
                Apology to Walter Banks - was [Re: FORTH - How Does It Work?] Richard Owlett <rowlett@cloud85.net> - 2015-05-10 23:09 -0500
                Re: Apology to Walter Banks - was [Re: FORTH - How Does It Work?] Walter Banks <walter@bytecraft.com> - 2015-05-11 07:24 -0400
                Re: Apology to Walter Banks - was [Re: FORTH - How Does It Work?] rickman <gnuarm@gmail.com> - 2015-05-11 11:34 -0400
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-10 19:18 -0700
                Re: FORTH - How Does It Work? Walter Banks <walter@bytecraft.com> - 2015-05-11 07:50 -0400
                Re: FORTH - How Does It Work? beeflo <beeflobill@gmail.com> - 2015-05-11 09:37 -0700
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 11:32 -0700
                Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-12 05:21 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 14:08 +0100
                Re: FORTH - How Does It Work? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-12 14:52 +0000
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 17:18 +0100
                Re: FORTH - How Does It Work? Lars Brinkhoff <lars.spam@nocrew.org> - 2015-05-13 08:41 +0200
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-13 08:07 +0100
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-13 19:29 -0700
                Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-12 08:10 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 17:13 +0100
                Re: FORTH - How Does It Work? Jason Damisch <jasondamisch@yahoo.com> - 2015-05-12 09:33 -0700
                Re: FORTH - How Does It Work? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-12 15:38 +0000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-12 21:51 -0700
                Re: FORTH - How Does It Work? "WJ" <w_a_x_man@yahoo.com> - 2015-05-12 16:05 +0000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-14 17:26 -0700
                Re: FORTH - How Does It Work? bettilyona@gmail.com - 2015-06-02 10:21 -0700
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-06-02 20:39 -0700
                Re: FORTH - How Does It Work? bettilyona@gmail.com - 2015-06-08 13:14 -0700
                Re: FORTH - How Does It Work? Hans Bezemer <the.beez.speaks@gmail.com> - 2015-06-20 13:15 +0200
                Re: FORTH - How Does It Work? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-06-20 14:37 +0000
                Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-06-20 08:23 -1000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-06-20 19:24 -0700
                Re: FORTH - How Does It Work? Hans Bezemer <the.beez.speaks@gmail.com> - 2015-06-21 12:30 +0200
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-06-21 20:58 +0100
                Re: FORTH - How Does It Work? Bernd Paysan <bernd.paysan@gmx.de> - 2015-06-22 00:13 +0200
            Re: FORTH - How Does It Work? "HAA" <someone@microsoft.com> - 2015-05-11 12:10 +1000
              Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 11:35 -0400
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 16:52 +0100
                Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-11 08:12 -1000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 12:37 -0700
                Re: FORTH - How Does It Work? Walter Banks <walter@bytecraft.com> - 2015-05-11 15:59 -0400
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 21:34 +0100
                Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 16:42 -0400
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 21:52 +0100
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 14:55 -0700
                Re: FORTH - How Does It Work? "WJ" <w_a_x_man@yahoo.com> - 2015-05-12 16:22 +0000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-12 22:42 -0700
                Re: FORTH - How Does It Work? Jason Damisch <jasondamisch@yahoo.com> - 2015-05-13 11:18 -0700
                Re: FORTH - How Does It Work? "WJ" <w_a_x_man@yahoo.com> - 2015-05-25 15:04 +0000
                Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 20:38 -0400
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 14:31 -0700
                Re: FORTH - How Does It Work? Walter Banks <walter@bytecraft.com> - 2015-05-12 07:06 -0400
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 21:30 +0100
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 14:52 -0700
                Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 20:40 -0400
                Re: FORTH - How Does It Work? Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-12 03:38 +0200
                Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 22:10 -0400
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 20:25 -0700
                Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-12 01:13 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-12 11:03 +0100
                Re: FORTH - How Does It Work? Bernd Paysan <bernd.paysan@gmx.de> - 2015-05-12 16:08 +0200
                Re: FORTH - How Does It Work? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-05-12 14:04 +0000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 19:08 -0700
                Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 22:46 -0400
                Re: FORTH - How Does It Work? "HAA" <someone@microsoft.com> - 2015-05-14 18:30 +1000
                Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-13 22:55 -1000
                Re: FORTH - How Does It Work? "HAA" <someone@microsoft.com> - 2015-05-16 05:08 +1000
                Re: FORTH - How Does It Work? "Elizabeth D. Rather" <erather@forth.com> - 2015-05-15 09:54 -1000
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-20 13:59 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-14 10:40 +0100
                Re: FORTH - How Does It Work? Mark Wills <markwills1970@gmail.com> - 2015-05-14 03:12 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-14 12:03 +0100
            Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-10 22:09 -0700
              Re: FORTH - How Does It Work? Jason Damisch <jasondamisch@yahoo.com> - 2015-05-11 10:12 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 18:57 +0100
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-11 11:48 -0700
                Re: FORTH - How Does It Work? "Alex McDonald" <blog@rivadpm.com> - 2015-05-11 20:28 +0100
                Re: FORTH - How Does It Work? hughaguilar96@gmail.com - 2015-05-12 21:28 -0700
        Re: FORTH - How Does It Work? rickman <gnuarm@gmail.com> - 2015-05-11 11:29 -0400
  Re: FORTH - How Does It Work? Ching-Tang Tseng <ilikeforth@gmail.com> - 2015-05-04 19:40 -0700
  Re: FORTH - How Does It Work? tthomas@duelcraft2.com - 2015-05-08 16:22 -0700

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