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Groups > comp.os.linux.advocacy > #591785

Re: US-ASCII is a subset of the set of Unicode code points.

From FR <fr@random.info>
Newsgroups comp.os.linux.advocacy, alt.os.linux, comp.os.linux.misc
Subject Re: US-ASCII is a subset of the set of Unicode code points.
Followup-To comp.os.linux.advocacy
Date 2021-08-06 15:49 +0000
Organization NewsGuy.com
Message-ID <sejllr026a9@news4.newsguy.com> (permalink)
References <sejhjm022lo@news2.newsguy.com> <Jeff-Relf.Me@Aug.6--8.15am.Seattle.2021> <sejkuh$1nj1$1@gioia.aioe.org>

Cross-posted to 3 groups.

Followups directed to: comp.os.linux.advocacy

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On Fri, 06 Aug 2021 17:36:37 +0200, R.Wieser wrote:

> 
>> As far as I know, the first 32 [ code points ] (except CR and LF)
>> are just dead space.  Is this correct ?
> 
> No.  All of those have definite meanings.  
>

According to the link that I cited, in Unicode the meanings,
outside of an application, are not always the same as the original:


"Unicode specifies semantics for the following control characters:
 
ASCII control characters: 

HT and SP are considered whitespace.

LF, VT, FF and CR are considered whitespace, and also mandatory line breaks
in the line breaking algorithm.

FS, GS, RS and US are considered separators in the bi-directional algorithm."


Thus if I encounter an HT control code in some UTF-8 file
then I should process that code as whitespace.

But a specific application may choose to use the HT control
code for some other purpose.

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Thread

Any Unicode Experts? FR <fr@random.info> - 2021-08-06 14:39 +0000
  Re: Any Unicode Experts? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-06 14:51 +0000
    Re: Any Unicode Experts? FR <fr@random.info> - 2021-08-06 15:01 +0000
  Re: Any Unicode Experts? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-06 14:54 +0000
  US-ASCII is a subset of the set of Unicode code points. Jeff-Relf.Me  @. - 2021-08-06 08:15 -0700
    Re: US-ASCII is a subset of the set of Unicode code points. "R.Wieser" <address@not.available> - 2021-08-06 17:36 +0200
      Re: US-ASCII is a subset of the set of Unicode code points. FR <fr@random.info> - 2021-08-06 15:49 +0000
        Re: US-ASCII is a subset of the set of Unicode code points. Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2021-08-06 16:14 +0000
        Re: US-ASCII is a subset of the set of Unicode code points. "R.Wieser" <address@not.available> - 2021-08-06 18:48 +0200
        Re: US-ASCII is a subset of the set of Unicode code points. Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-08-06 17:25 +0000
          Re: US-ASCII is a subset of the set of Unicode code points. FR <fr@random.info> - 2021-08-06 17:52 +0000
          Re: US-ASCII is a subset of the set of Unicode code points. FR <fr@random.info> - 2021-08-06 17:57 +0000
  Re: Any Unicode Experts? Eli the Bearded <*@eli.users.panix.com> - 2021-08-06 20:27 +0000
    Re: Any Unicode Experts? The Natural Philosopher <tnp@invalid.invalid> - 2021-08-07 09:36 +0100
      Re: Any Unicode Experts? Steve Carroll <frelwizzen@gmail.com> - 2021-08-07 04:41 -0700
      Re: Any Unicode Experts? Eli the Bearded <*@eli.users.panix.com> - 2021-08-08 04:32 +0000
        Re: Any Unicode Experts? rbowman <bowman@montana.com> - 2021-08-07 22:50 -0600
          Re: Any Unicode Experts? jak <nospam@please.ty> - 2021-08-08 20:32 +0200
            Re: Any Unicode Experts? rbowman <bowman@montana.com> - 2021-08-08 18:00 -0600
              "while(1);" borks Visual Studio. Jeff-Relf.Me  @. - 2021-08-08 18:11 -0700
                Re: "while(1);" borks Visual Studio. rbowman <bowman@montana.com> - 2021-08-08 22:19 -0600
                Re: "while(1);" borks Visual Studio. Soviet_Mario <SovietMario@CCCP.MIR> - 2021-08-16 16:06 +0200
                Re: "while(1);" borks Visual Studio. jak <nospam@please.ty> - 2021-08-10 18:02 +0200
                while(malloc(666)); Jeff-Relf.Me  @. - 2021-08-10 09:28 -0700
                Re: while(malloc(666)); jak <nospam@please.ty> - 2021-08-10 18:39 +0200
                Re: "while(1);" borks Visual Studio. Smit <frelwizzen@gmail.com> - 2021-08-10 20:53 -0700
              Re: Any Unicode Experts? Stephen Carrolll <frelwizzen@gmail.com> - 2021-08-08 18:56 -0700
              Re: Any Unicode Experts? jak <nospam@please.ty> - 2021-08-09 07:28 +0200
                Re: Any Unicode Experts? rbowman <bowman@montana.com> - 2021-08-09 07:56 -0600
                Re: Any Unicode Experts? Dustin the dude with the stuck floppy <frelwizzen@gmail.com> - 2021-08-09 20:49 -0700
                Re: Any Unicode Experts? jak <nospam@please.ty> - 2021-08-10 10:33 +0200
                Re: Any Unicode Experts? The Natural Philosopher <tnp@invalid.invalid> - 2021-08-10 12:49 +0100
                Re: Any Unicode Experts? jak <nospam@please.ty> - 2021-08-10 15:26 +0200
                Re: Any Unicode Experts? vallor <vallor@cultnix.org> - 2021-08-10 13:43 +0000
                Re: Any Unicode Experts? rbowman <bowman@montana.com> - 2021-08-10 21:12 -0600
                Re: Any Unicode Experts? The Natural Philosopher <tnp@invalid.invalid> - 2021-08-11 12:25 +0100
                Re: Any Unicode Experts? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-08-11 16:52 +0000
                Re: Any Unicode Experts? jak <nospam@please.ty> - 2021-08-11 20:19 +0200
                Re: Any Unicode Experts? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-08-12 16:37 +0000
                Re: Any Unicode Experts? jak <nospam@please.ty> - 2021-08-12 20:32 +0200
                Re: Any Unicode Experts? rbowman <bowman@montana.com> - 2021-08-12 20:40 -0600
                Re: Any Unicode Experts? Dustin who does stuff with miceless computers <frelwizzen@gmail.com> - 2021-08-13 06:19 -0700
                Re: Any Unicode Experts? STALKING_TARGET_02 <frelwizzen@gmail.com> - 2021-08-13 03:41 -0700
                Re: Any Unicode Experts? Andreas Kohlbach <ank@spamfence.net> - 2021-08-10 16:11 -0400
                Re: Any Unicode Experts? DFS <nospam@dfs.com> - 2021-08-09 11:32 -0400
  Re: Any Unicode Experts? rbowman <bowman@montana.com> - 2021-08-06 18:19 -0600
  Re: Any Unicode Experts? Delimited <tabz334@rozlnk.net> - 2021-08-08 00:21 -0400
    Re: Any Unicode Experts? Joel <joelcrump@gmail.com> - 2021-08-08 00:29 -0400
    Re: Any Unicode Experts? Stéphane CARPENTIER <sc@fiat-linux.fr> - 2021-08-08 16:20 +0000
    Re: Any Unicode Experts? Stéphane CARPENTIER <sc@fiat-linux.fr> - 2021-08-08 16:28 +0000

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