On 9 Jun 2009, at 17:17, Arthur Reutenauer wrote:
Thanks a lot for reporting and for the explanation. I did not follow
Sanskrit pattern changes and I did not try to explore what these
characters are and what purpose they serve
The characters were added to hyph-sa.tex in revision 260, in order to
follow an addition to Unicode 5.0. I have to admit I did not test
them
back then.
Just for the record: The reason they caused a problem is that their
Unicode category is "symbol" rather than "letter", and therefore the
(auto-generated) file unicode-letters.tex that sets up \catcode and
(more significantly, here) \lccode values for all the "letters" in
Unicode does not include these characters.
In general, if for some reason you want to include characters whose
Unicode category is not Letter (or Combining Mark) in \patterns,
you'll need to explicitly set their \lccode first.
I don't suppose there will be many cases where people want to include
"symbol" characters in hyphenation patterns, but there may be
occasional instances -- such as this.
JK
