Re: Search order - why usually two times "Forth"?

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: Search order - why usually two times "Forth"?
Date	2015-02-18 11:31 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2015Feb18.123119@mips.complang.tuwien.ac.at> (permalink)
References	<slrnme53rj.1qm.empty.buffersYOU-DONT-WANT-THIS@Ferrycy.localdomain> <2015Feb17.135426@mips.complang.tuwien.ac.at> <slrnme72k9.7sh.empty.buffersYOU-DONT-WANT-THIS@Ferrycy.localdomain>

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empty-buffers <empty.buffersYOU-DONT-WANT-THIS@gmail.NEITHER-THIS.com> writes:
>In comp.lang.forth, Anton Ertl wrote:
>
>> The reason we do it in Gforth is such that programs that contain
>> idioms like
>>
>> vocabluary foo
>> foo definitions
>>: bar ... ;
>> forth definitions
>>
>> (i.e., classic fig-Forth days usage) work.  Programs that use ALSO
>> still work, and I don't remember ever getting a report of program
>> failure because of the double occurence of FORTH.
>
>If I understood, the reason is, that - from what I see - in FIG-Forth
>"foo" (from example above) sets itself as first position in search order,
>but _not_ replacing present vocabulary "on top" ("built-in ALSO")?

fig-Forth has no search order in the Forth 94 sense.  It has the
CONTEXT vocabulary, that'ss all.  But CONTEXT always includes all the
words in FORTH (or is it the CONTEXT at the time of the definition of
the new vocabulary) at the time of the definition of the new
vocabulary (IIRC).  So it's somewhat similar to having a search order
with 2 elements, with the bottom element being FORTH.  Anyway, no
ALSO.

FOO would set itself as the new CONTEXT.

- 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: http://www.forth200x.org/forth200x.html
   EuroForth 2014: http://www.euroforth.org/ef14/

Thread

Search order - why usually two times "Forth"? empty-buffers <empty.buffersYOU-DONT-WANT-THIS@gmail.NEITHER-THIS.com> - 2015-02-17 00:46 +0000
  Re: Search order - why usually two times "Forth"? "Alex McDonald" <blog@rivadpm.com> - 2015-02-17 09:33 +0000
    Re: Search order - why usually two times "Forth"? empty-buffers <empty.buffersYOU-DONT-WANT-THIS@gmail.NEITHER-THIS.com> - 2015-02-17 10:08 +0000
    Re: Search order - why usually two times "Forth"? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-02-17 11:07 +0000
  Re: Search order - why usually two times "Forth"? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-02-17 12:54 +0000
    Re: Search order - why usually two times "Forth"? empty-buffers <empty.buffersYOU-DONT-WANT-THIS@gmail.NEITHER-THIS.com> - 2015-02-17 18:38 +0000
      Re: Search order - why usually two times "Forth"? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-02-18 11:31 +0000
        Re: Search order - why usually two times "Forth"? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-02-18 13:16 +0000
          Re: Search order - why usually two times "Forth"? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-02-18 14:00 +0000
            Re: Search order - why usually two times "Forth"? "Alex McDonald" <blog@rivadpm.com> - 2015-02-18 16:44 +0000
  Re: Search order - why usually two times "Forth"? november.nihal@gmail.com - 2015-02-17 07:13 -0800
  Re: Search order - why usually two times "Forth"? "Elizabeth D. Rather" <erather@forth.com> - 2015-02-17 08:21 -1000
    Re: Search order - why usually two times "Forth"? "Alex McDonald" <blog@rivadpm.com> - 2015-02-17 18:43 +0000
      Re: Search order - why usually two times "Forth"? "Elizabeth D. Rather" <erather@forth.com> - 2015-02-17 11:59 -1000
    Re: Search order - why usually two times "Forth"? hughaguilar96@gmail.com - 2015-02-17 18:30 -0800
      Re: Search order - why usually two times "Forth"? JennyB <jennybrien@googlemail.com> - 2015-02-18 04:01 -0800
        Re: Search order - why usually two times "Forth"? hughaguilar96@gmail.com - 2015-02-18 18:13 -0800
          Re: Search order - why usually two times "Forth"? "HAA" <someone@microsoft.com> - 2015-02-28 11:35 +1100
      Re: Search order - why usually two times "Forth"? "Alex McDonald" <blog@rivadpm.com> - 2015-02-18 12:34 +0000
    Re: Search order - why usually two times "Forth"? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-02-18 12:28 +0000
  Re: Search order - why usually two times "Forth"? jacko <jackokring@gmail.com> - 2015-02-18 08:49 -0800
    Re: Search order - why usually two times "Forth"? jacko <jackokring@gmail.com> - 2015-02-18 09:04 -0800
      Re: Search order - why usually two times "Forth"? jacko <jackokring@gmail.com> - 2015-02-18 10:17 -0800
        Re: Search order - why usually two times "Forth"? jacko <jackokring@gmail.com> - 2015-02-18 10:20 -0800

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