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Message-ID: <2151128.Fu5VX4rOnI@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <usenet@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Fri, 03 May 2013 17:59:30 +0200
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Subject: Re: Unicode support
Newsgroups: comp.lang.javascript
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Xref: csiph.com comp.lang.javascript:19608

Scott Sauyet wrote:

> Thomas 'PointedEars' Lahn wrote:
>> JSX:string/unicode.js is real: I have been working on a library that
>> supports Unicode characters beyond the Basic Multilingual Plane; that is
>> UTF-16 code sequences for code points beyond U+FFFF, up to U+10FFFF.
>> [ ... ]
>>
>> The unit test of JSX:string/unicode.js can now be viewed at
>>
>> <http://PointedEars.de/scripts/test/unicode>
>>
>> More features and testcases will follow.  Hopefully the library will be
>> useful.
>>
>> I am also considering to overwrite built-in methods of the String
>> constructor and the String prototype object, and augment them with new
>> ones […].  Overwriting and augmenting would be optional each, but done by
>> default, through the new jsx.options mechanism (see object.js [2] for
>> details).
>>
>> What do you think? [ ... ]
> 
> While I have no current uses for this, I applaud your efforts, and
> would be very happy to know that it was available if I did need it.
> I've looked over your regex extension; I was impressed and wished it
> had been available for some older projects I had done.  This project
> could clearly fill some similar gaps.
> 
> But, as I said, I have no uses for it in any current projects.
> 
> Good luck,

Thank you very much.

Now unicode.js by default (AISB, it is configurable) also replaces 
String.fromCharCode() to support code points beyond U+FFFF (Number arguments 
from 0 to 0x10FFFF), and adds String.prototype.getLength() so that 
"…".getLength() returns the number of Unicode characters in a string, as 
opposed to the built-in "…".length which yields the number of 16-bit code 
units.  More is going to follow.

Thanks to Cezary Tomczyk's test [1] it is also working in IE 10 on Windows 8 
(it was a refactoring bug in object.js).  However, JScript in IE/MSHTML 10 
apparently lacks the ability to define getters and setters for properties of 
native objects as specified in ECMAScript Edition 5.x, so tests using those 
features will always fail.

[1] <https://twitter.com/cezarytomczyk/status/329850349760442368>

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.