soft hyphen

[Noah Levitt <nlevitt columbia edu>]

There's been a discussion on the linux-utf8 mailing list
about U+00AD SOFT HYPHEN. Unicode 4.0 changes the
character's General Category from Pd (Punctuation, Dash) to
Cf (Other, Format). The consensus seems to be that SHY
should be ignored, except as a suggestion for a hyphenation
point. (It's not clear to me whether that's been true all
along or is new with Unicode 4.0.) Pango seems to currently
treat SHY as a regular non-word character. It always draws
it. Since pango doesn't do hyphenation yet, I think it
should always ignore SHY. Comments?

Noah