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Groups > comp.lang.forth > #39942
| From | Bernd Paysan <bernd.paysan@gmx.de> |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: FORTH - How Does It Work? |
| Date | 2015-06-22 00:13 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <mm7csd$cr3$1@dont-email.me> (permalink) |
| References | (12 earlier) <521c9f1f-6d68-498f-bf3b-d7e29600d06d@googlegroups.com> <55854b59$0$2943$e4fe514c@news2.news.xs4all.nl> <-rWdncyOYZAEMhjInZ2dnUU7-LOdnZ2d@supernews.com> <402d5a33-0ad3-431f-9b60-fa23b1b62875@googlegroups.com> <mm74uv$cgd$1@dont-email.me> |
Alex McDonald wrote: > on 21/06/2015 03:24:28, hugh wrote: > >> >> During the thread, there was a discussion of UTF-8 and UTF-16. >> Somewhat hum orously (to me), this lengthy procession of >> pseudo-intellectual babble neve r touched on the basic problem: there >> is no standard way to write TOUPPER a nd TOLOWER in UTF-x and hence >> there is no way to use these formats in Forth that is >> case-insensitive. >> > > There is a standard way to upper and lower case, and it's not based on > UTF; it's based on case folding Unicode code points (although converting > to UTF-16 or UTF-32 can provide adequate case folding). > http://www.unicode.org/faq/casemap_charprop.html Actually, the Rational for XChar does deal (in a Taoist way, pointing to the minimal solution) with that problem: "Many Forth systems today are case insensitive, to accept lower case standard words. It is sufficient to be case insensitive for the ASCII subset to make this work — this saves a large code mapping table for comparison of other symbols. Case is mostly an issue of European languages (Latin, Greek, and Cyrillic), but similar issues exist between traditional and simplified Chinese (finally being dealt with by Unihan), and between different Latin code pages in the Universal Character Set (UCS), e.g., full width vs. normal half width Latin letters." The actual problem of a case insensitve Forth (which today most are) is that standard Forth words are all written in uppercase by the standard, but we want to write them in lower case, sometimes mixed case (e.g. control structures in caps, the rest lower case). These words all use only the ASCII subset. Problem solved. If you look at the reason why you do something, you can do it much cheaper than when you just implement an overgeneralized solution to everything. Of course you can use accent and unihan normalization followed by case-folding of Unicode to do your case-insensitive compare, but it is not required by the standard, as this is IMHO overengineering. It's not forbidden, either. -- Bernd Paysan "If you want it done right, you have to do it yourself" net2o ID: kQusJzA;7*?t=uy@X}1GWr!+0qqp_Cn176t4(dQ* http://bernd-paysan.de/
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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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