bug#297: 23.0.60; Underlining text including U+00F6, U+00E4

[Markus Triska]

When I open the following file (enriched-mode) with "emacs -Q":

   http://www.logic.at/prolog/test.doc

it looks like this:

   http://www.logic.at/prolog/test.png

All characters up to, and including, U+00F6 are underlined, and the
following are not, although test.doc says all should be underlined.

This also occurs, for example, in message titles with Gnus (where the
current mail is underlined), if an author name contains U+00E4, U+00E9
and several others.

In GNU Emacs 23.0.60.2 (i386-apple-darwin8.11.1, GTK+ Version 2.12.9)
 of 2008-05-19 on mt-computer.local
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40400000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t