Maxim Nikulin writes:
> In CSS it is possible to specify a list of fonts and a glyph is taken
> from the first font where it is present. Despite particular fonts have
> limited coverage, I see wide range of Unicode characters on web pages,
> that is why I am almost sure that system font libraries combine fonts.
In LuaTeX you can associate a font family to a range or a group of
characters. In a book I typesetted some time ago I used the Cardo font
to represent the characters for Private Use Area.
\newfontfamily\cardo{Cardo} % a fontspec command
\def\puatext#1{{\cardo #1}}
\begin{luacode*}
function my_pua (text)
texto = unicode.utf8.gsub ( text, "([\u{e000}-\u{f8ff}])", "\\puatext{%1}" )
return text
end
\end{luacode*}
\newcommand\activatepuatext{\directlua{luatexbase.add_to_callback
( "process_input_buffer" , my_pua , "my_pua" )}}
\AtBeginDocument{\activatepuatext}
(I add a simple substitution to the callback `process_imput_buffer'
[see: http://wiki.luatex.org/index.php/Callbacks], but these kinds of
overrides can also be do from Org using a custom filter).
Regards,
Juan Manuel
