>We didn't do any specific >We didn't do any specific Unicode testing (nor any 
>truly exhaustive

simple test of a PDF produced from my usual unicode testbed: 

http://www.sustainablegis.com/unicode/

produced some strange results. 

first off it seems you have to *know* the encoding of the PDF (at least i 
didn't see any methods for examining this). i guess not a big deal as 
everybody's using unicode, right ;-)

next when i stripped out the text, it handled pretty much all of the unicode 
text (after i told it to use utf-8) including the hebrew text which is BIDI. 
but it 99% flubbed the arabic & farsi (also BIDI). it did get the arabic 
question marks right (as well as it's directionality) but it turned the rest of 
the text into "nullnullnull". and surprisingly it also flubbed the korean 
though the rest of CJK worked (including vietnamese which is sometimes also 
lumped into CJK).

i can't see a pattern as to what works & what doesn't. i guess it needs more 
looking into.

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