From: Richard Wordingham (richard.wordingham@ntlworld.com)
Date: Tue Jun 14 2005 - 15:56:07 CDT
John Hudson wrote:
> Take MS Word for example. You can make selections at the character level
> and apply colour
to the glyphs that represent the selected characters.
Which version? It doesn't work for Thai vowels in Word 2002. For Thai I
can colour the vowels separately with an 8-bit font like DB ThaiText, but
not with a Unicode font such as Arial, Tahoma or Angsana New.
> It is possible (globally in Word, using complex script mark display
> options) to
independently colour the combining hamza because it is identified as a
'mark' in the GDEF
table.
Again, which version? I tried with Word 2002 (Thai edition, I presume -
10.2627.2625), but I couldn't get combining hamza above (U+0654) to combine.
I tried several fonts - Trebuchet MS 1.23, Andalus 1.01, Traditional Arabic
1.01, Arabic Transparent 1.01. It was always offset to the left. Perhaps I
had the wrong base letter - my knowledge of the Arabic script is chiefly
based on uncomputerised Farsi plus a few snippets from Wright. When I tried
damma (U+064F), it lost its independent colour as soon as I converted the
hex digits to the encoded character with alt-x.
I did some more experimentation with Firefox. Its behaviour seems bizarre -
it definitely feels buggy. Sometimes a following space seems to restore the
missing Thai vowel, which does have the requested colour whenever it
appears.
Richard.
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