Unicode patch

Janko Mivšek janko.mivsek at eranova.si
Tue Jun 12 15:24:26 UTC 2007

Dear Squeakers,

Please find attached an Unicode patch, which deals with improvements of 
internal representation of Unicode characters. It:

1. introduce new class TwoByteString
2. change at:put: on ByteString and other such methods to "scale" string
    to TwoByteString or FourByteString, depending on width of a character
3. rename WideString to FourByteString for consistency, also
    rename all related methods
2. add category CollectionTests-Unicode with tests
3. add class UnicodeBenchmarking for measuring speed of
    Unicode handling like at:put speed and UTF8 conversions on included	
    English, French, Slovenian, Russian and Chinese text.

ByteString and TwoByteString also include UTF8 conversion methods, which 
will probably be moved to UTF8TextConverter later.

I hope this patch will help improving Squeak Unicode support a bit.

Best regards

Janko Mivšek
Smalltalk Web Application Server
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