[XeTeX] Hyperref \hyperlink and \hypertarget not working with accented characters

[Philip TAYLOR (Webmaster, Ret'd)]

Danyll Wills wrote:

> Phil, I use XeLaTeX for Chinese, Japanese and Mongolian. I have watched the discussion over the past few days and am 100 per cent behind you. I started my programming life in the early '80s using 8086 Assembly language. Nothing irritates me more than the idea that ASCII is the only way to go. Your latest explanation was spot on! Well done.
>
> /Danyll

Thank you, Danyll.  Although there are times when I feel like
a lone prophet crying in the desert, I genuinely believe
that people such as Heiko, Ross, Arthur et al are actually on
our side : they too understand the need for people to be able
to mark-up and typeset in any of the world's languages, and have
probably done more than most to make this possible (and are still
doing so).

Yet there /are/ lacunæ, and when they are identified (such
as the lack of support for arbitrary Unicode characters in the first
parameter to \hyperlink and \hypertarget), then surely it is
better to accept that work still needs to be done, rather than
attempt to sweep the problem under the carpet by saying "Don't
use non-ASCII characters in the link" without adding "until this
limitation can be overcome", or by stating that "Letters and digits
are safe" without clarifying that by "letter" the author is referring
solely to a very restricted set of "letters" that almost certainly
excludes such common letters as "ł" or "ę", "ư" or "ẻ".

** Phil.