Re: active characters in mkiv (and mkii)

[Hans Hagen <pragma@wxs.nl>]

Thomas A. Schmitz wrote:
> On Jul 7, 2008, at 1:20 PM, Hans Hagen wrote:
> 
>> forget about the past, think about what kind of functionality you want
>>
>> for instance,
>>
>> "we need a language dependent feature that remaps characters"
>>
>> so, what are the specs; maybe other languages need similar things
>>
>> (there is already something available which we can easily extend)
> 
> OK, acknowledged. However, this is a special case because:
> 
> - it is not a language feature, it is just something for a special  
> sort of ancient Greek texts (the subdot accent doesn't exist in Greek);
> 
> - the character is available in just a few fonts, so my idea was to  
> really write a macro which will specifically fetch the glyph from a  
> specific font.
> 
> So for the time being, the specs are (for my module)
> 
> ~ => inactive (already done in the module)
> | => inactive (already done in the module)
> ! => active, map to Unicode character 0323 in a font that has this  
> character

in that case, how abotu a fallback font ...

% \definefontfallback [whatever] [Slanted]     [0x0060-0x007F] [force=yes]
% \definefontfallback [whatever] [Bold] 
[0x0080:0x00FF,0x00A0:0x00AF] [rscale=2.0]
% \definefontfallback [whatever] [BoldSlanted] ["00C0-"00C7] 
[check=yes,force=yes]
% \definefontfallback [whatever] [Mono]        [latinextendeda] 
[force=yes] % 0x0100:0x017F
% \definefontfallback [whatever] [Mono]        [latin extended a] 
[force=yes] % 0x0100:0x017F
%
% \definefontsynonym[SerifPlus][Serif][fallbacks=whatever]
%
% \definefont[MySerif][SerifPlus at 10pt]
%
% \startcolumns[n=6]
%     \MySerif
%     \dostepwiserecurse {0} {65000} {1} {
%         \iffontchar\font\recurselevel
%             {\tttf\uchexnumbers\recurselevel:} \char\recurselevel\par
%         \fi
%     }
% \stopcolumns


so, you define a fallbackfont for your greek font

Hans


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