From: Jim Skelton (firstname.lastname@example.org)
Date: Mon May 17 2004 - 16:36:54 PDT
I'm finding that when displaying a PDF file generated
from XEP, that Unicode combining diacritics don't
render correctly. An example of this is at
http://www3.telus.net/osis/CNT.2john.pdf -- in the
title, 3rd word from the left, you'll notice that the
acute accent over the e dieresis is too low. This
character is represented by the two glyphs x00EB
x0301. The latter glyph is a combining diacritic,
meaning that it overstrikes the preceding character.
In theory, the rendering engine should place the
combining diacritic at the correct height, depending
on the metrics of the base character.
Another example of this is in the acute accent over
barred i, found in the first line of regular text, 2nd
word over. You'll notice that the barred i does have
the acute accent over it (though a little too far
left), but the dot on the i is retained (it shouldn't
be retained when combined with an acute accent). This
character is represented by x0268 x0301.
The embedded font used in this PDF file is a Unicode
font which contains a lot of the latin character
Is there something that can be done to render Unicode
combining diacritics correctly? I noticed that
Microsoft's Unicode rendering engine (Uniscribe), only
recently was able to render these character
combinations correctly. There are other unicode
rendering schemes, such as SIL's graphite...
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This archive was generated by hypermail 2.1.5 : Mon May 17 2004 - 16:49:14 PDT