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Re: Unicode support

Message-ID <2239420.ujkpEq8jF8@PointedEars.de> (permalink)
From Thomas 'PointedEars' Lahn <PointedEars@web.de>
Organization PointedEars Software (PES)
Date 2013-03-30 21:19 +0100
Subject Re: Unicode support
Newsgroups comp.lang.php
References (14 earlier) <2391743.1T8NqQ3TJ8@PointedEars.de> <kj6t3n$e1r$1@news.albasani.net> <kj6uci$of0$1@speranza.aioe.org> <5795699.ZddputCnCo@PointedEars.de> <kj7ggc$f3o$1@speranza.aioe.org>
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Christoph Becker wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Christoph Becker wrote:
>>> I suppose most *higher level languages* define the length of a string as
>>> the number of characters the string holds.  Cf. ECMAScript's length
>>> property and TCL's [string length].  Even PHP's mb_strlen() returns the
>>> number of characters.
>> 
>> AISB, unfortunately the “length” property of ECMAScript String instances
>> is not a good example in that regard as it does _not_ mean the number of
>> characters but the number of 16-bit units (UTF-16 code units, usually).
>> That is only less obvious than with UTF-8 because all Unicode characters
>> in the BMP can be encoded using only one such unit.  (I am working on a

“BMP” means “Basic Multilingual Plane” (U+0000 to U+FFFF).

>> workaround; you could call it “an mb_strlen() for ECMAScript
>> implementations”.)
> 
> ECMA-262, Edition 5.1, Section 15.5.5.1, states:
> 
> | *length*
> |
> | The number of characters in the String value represented by this
> | String object.
> 
> IMO the spec is quite clear here,

It is.

> and so the implementations might be in error.

For a change, it is not.  You should look up the definition of “character” 
in the Specification.  See also <news:2202673.rtQqbKup0V@PointedEars.de> pp. 
(yes, in comp.lang.python).

> Anyway, I appreciate your working on a workaround; may come in handy. :)

At the latest after first contact ;-)

You will find it in 
<http://PointEdears.de/websvn/listing.php?repname=JSX&path=%2Ftrunk%2Fstring%2F> 
when it is ready for testing.


F'up2 comp.lang.javascript

PointedEars
-- 
Prototype.js was written by people who don't know javascript for people
who don't know javascript. People who don't know javascript are not
the best source of advice on designing systems that use javascript.
  -- Richard Cornford, cljs, <f806at$ail$1$8300dec7@news.demon.co.uk>

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mysql dynamic binding and pass-by-ref deprecated oldyork90 <oldyork90@yahoo.com> - 2013-03-19 20:49 -0700
  Re: mysql dynamic binding and pass-by-ref deprecated Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-20 06:42 -0400
    Re: mysql dynamic binding and pass-by-ref deprecated oldyork90 <oldyork90@yahoo.com> - 2013-03-20 07:09 -0700
      Re: mysql dynamic binding and pass-by-ref deprecated Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-20 15:29 +0100
        Re: mysql dynamic binding and pass-by-ref deprecated The Cat in the Hat <doctor@suess.com> - 2013-03-20 21:58 +0000
          UTF-8 charset (was: mysql dynamic binding and pass-by-ref deprecated) Christoph Becker <cmbecker69@gmx.de> - 2013-03-20 23:45 +0100
            Re: UTF-8 charset (was: mysql dynamic binding and pass-by-ref deprecated) The Cat in the Hat <doctor@suess.com> - 2013-03-20 23:13 +0000
              Re: UTF-8 charset The Natural Philosopher <tnp@invalid.invalid> - 2013-03-20 23:31 +0000
              Re: UTF-8 charset "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-21 10:11 +0100
                Re: UTF-8 charset adrian@poppyrecords.invalid.invalid (Adrian Tuddenham) - 2013-03-21 14:31 +0000
                Re: UTF-8 charset The Natural Philosopher <tnp@invalid.invalid> - 2013-03-21 16:22 +0000
                Re: UTF-8 charset "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-21 18:05 +0100
                Re: UTF-8 charset Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-22 01:17 +0100
                Re: UTF-8 charset Christoph Becker <cmbecker69@gmx.de> - 2013-03-22 01:55 +0100
                Unicode support (was: UTF-8 charset) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-22 02:16 +0100
                Re: Unicode support Christoph Becker <cmbecker69@gmx.de> - 2013-03-30 13:57 +0100
                Re: Unicode support Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-30 14:25 +0100
                Re: Unicode support The Natural Philosopher <tnp@invalid.invalid> - 2013-03-30 14:33 +0000
                Re: Unicode support Christoph Becker <cmbecker69@gmx.de> - 2013-03-30 15:55 +0100
                Re: Unicode support The Natural Philosopher <tnp@invalid.invalid> - 2013-03-30 18:04 +0000
                Re: Unicode support Christoph Becker <cmbecker69@gmx.de> - 2013-03-30 21:26 +0100
                Re: Unicode support The Natural Philosopher <tnp@invalid.invalid> - 2013-03-30 21:26 +0000
                Re: Unicode support Christoph Becker <cmbecker69@gmx.de> - 2013-03-30 23:14 +0100
                Re: Unicode support The Natural Philosopher <tnp@invalid.invalid> - 2013-03-30 22:29 +0000
                Re: Unicode support "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-31 14:10 +0200
                Re: Unicode support The Natural Philosopher <tnp@invalid.invalid> - 2013-03-31 13:41 +0100
                Re: Unicode support "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-31 19:12 +0200
                Re: Unicode support Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-30 20:18 +0100
                Re: Unicode support Christoph Becker <cmbecker69@gmx.de> - 2013-03-30 21:05 +0100
                Re: Unicode support Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-30 21:19 +0100
                Re: Unicode support "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-31 14:06 +0200
                Re: Unicode support "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-02 19:59 +0200
                Re: Unicode support The Natural Philosopher <tnp@invalid.invalid> - 2013-03-30 14:29 +0000
                Re: UTF-8 charset The Natural Philosopher <tnp@invalid.invalid> - 2013-03-22 10:50 +0000
                Re: UTF-8 charset "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-22 09:46 +0100
                Re: UTF-8 charset "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-03-21 18:36 +0100
                Re: UTF-8 charset [OT] adrian@poppyrecords.invalid.invalid (Adrian Tuddenham) - 2013-03-21 18:22 +0000
                Re: UTF-8 charset [OT] "Peter H. Coffin" <hellsop@ninehells.com> - 2013-03-21 15:00 -0500
                Re: UTF-8 charset [OT] Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-03-22 01:47 +0100
            Re: UTF-8 charset The Natural Philosopher <tnp@invalid.invalid> - 2013-03-20 23:20 +0000
              Re: UTF-8 charset Scott Johnson <noonehome@chalupasworld.com> - 2013-03-20 16:39 -0700
          Re: mysql dynamic binding and pass-by-ref deprecated Jerry Stuckle <jstucklex@attglobal.net> - 2013-03-20 23:29 -0400
          OT: Xnews mime-proxy (was: mysql dynamic binding and pass-by-ref deprecated) BootNic <bootnic.bounce@gmail.com> - 2013-03-21 10:53 -0400
        Re: mysql dynamic binding and pass-by-ref deprecated oldyork90 <oldyork90@yahoo.com> - 2013-03-21 06:43 -0700

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