On Feb 3 AD 2011, at 10:01 AM, Rik Kabel wrote:
Well, it works fine for mono-font documents, or documents in which the
substitution can be assured to always within the main font, but it
fails
horribly in other cases. The OP indicated that she wants to work with
several fonts.
Consider what would happen if additionally the preamble defined a
Greek
font, and an en- or em-dash appeared in the body within Greek text:
the
text following the en- or em-dash would now be in the document's main
font (defined by \normalfont).
This hadn't occurred to me, of course. But maybe the Greek range
could be defined for the desired font and then included as a new
class. Do you think that might work?
Researching this, I saw that somebody asked (in 2007) if there is a
way
to save and restore the current font. That was never answered. Perhaps
it would be useful here. It wouldn't be completely foolproof as many
character classes are defined, but saving the font on transitions
from 0
and 255 to 4 (in this example), and restoring it on transitions
from 4,
would go a long way towards addressing this.
Jonathan posted this code some time ago which I used for Syriac.
Maybe it would be useful for your question:
%%%%%%%%%%%%%%%%%
\def\setclass#1#2{\def\theclass{#1}\def\charlist{#2}%
\expandafter\dosetclass\charlist,\end}
\def\dosetclass#1,#2\end{%
\def\test{#1}\def\charlist{#2}%
\ifx\test\empty\let\next\finishsetclass
\else \XeTeXcharclass "\test = \theclass
\let\next\dosetclass \fi
\expandafter\next\charlist,,\end}
\def\finishsetclass#1,,\end{}
%% code for Melthofonts = Syriac fonts (these are some of the Unicode
position numbers for individual glyphs)
\setclass \V {0730,0731,0732,0733,0734,0735}
\setclass \V {0736,0737,0738,0739,073A,073B,073C}
\setclass \V {073D,073E,073F,0740,0741,0742,0743}
\setclass \V {0744,0745,0746,0747,0748}
%%%%%%%%%%%%%%%%%%%
Obviously, that might get very tedious. But it's just a suggestion ....
HTH.
United in adoration of Jesus,
fr. michael gilmary, mma
Most Holy Trinity Monastery
67 Dugway Road
Petersham, MA 01366
www.MaroniteMonks.org
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