[XeTeX] Handling of the ^^-input

[Ulrike Fischer]

Am Wed, 8 Oct 2008 04:49:42 -0700 (PDT) schrieb Apostolos Syropoulos:

>> I'm rather sure that I have seen some time ago a text which shed some
>> lights about how XeTeX handles ^^xx-input, but I can't find it. 
> 
> use
> 
> ^^hh
> ^^^^hhhh
> ^^^^^hhhhh
> ^^^^^^hhhhhh
> 
> where h is a lowercase hexadecimal digit.
> 

I wanted to know some details about how xetex handles them (to know if
code which use ^^hh will always give the same results with pdftex and
xetex). 

-- 
Ulrike Fischer