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\startenvironment fonts-environment
% we need to do this beforehand
\blockligatures[fi,fl,ff]
\startbuffer[extraminus]
\startluacode
fonts.helpers.addextraprivate("smallminus", function(tfmdata)
local hchar = tfmdata.characters[0x002D]
local mchar = tfmdata.characters[0x2212]
if hchar and mchar then
return {
width = hchar.width,
height = mchar.height,
commands = {
{ "down", hchar.height - mchar.height },
{ "char", 0x002D },
}
}
end
end)
fonts.helpers.addextraprivate("highminus", function(tfmdata)
local hchar = tfmdata.characters[0x002D]
local mchar = tfmdata.characters[0x2212]
local xchar = tfmdata.characters[0x0058]
if hchar and mchar and xchar then
return {
width = hchar.width,
height = mchar.height,
commands = {
{ "down", - xchar.height + mchar.height },
{ "char", 0x002D },
}
}
end
end)
\stopluacode
\stopbuffer
\getbuffer[extraminus]
% so far for preloading
\environment manuals-explaining-environment
\environment manuals-explaining-cover
\enabledirectives[visualizers.fraction=2]
\usemodule [s] [fonts-tables]
\usemodule [s] [fonts-missing]
\usemodule [s] [fonts-vectors]
\usemodule [s] [fonts-features]
\usemodule [s] [math-extensibles]
\definefontfeature[demo-onum][kern=yes,onum=yes]
%definefontfeature[demo-lnum][kern=yes,lnum=yes]
\definefontfeature[demo-tnum][kern=yes,tnum=yes]
\definefontfeature[demo-pnum][kern=yes,pnum=yes]
\definefontfeature[demo-zero][zero=yes]
\definefontfeature[demo-none][]
\definefont[DemoOnumLM][file:lmroman10-regular*demo-onum at 42pt]
%definefont[DemoLnumLM][file:lmroman10-regular*demo-lnum at 42pt]
\definefont[DemoTnumLM][file:lmroman10-regular*demo-tnum at 42pt]
\definefont[DemoPnumLM][file:lmroman10-regular*demo-pnum at 42pt]
\definefont[DemoZeroLM][file:lmroman10-regular*demo-zero at 42pt]
\definefont[DemoNoneLM][file:lmroman10-regular*demo-none at 42pt]
\definefont[DemoZeroLT][file:lmtypewriter10-regular*demo-zero at 42pt]
\definefont[DemoNoneLT][file:lmtypewriter10-regular*demo-none at 42pt]
\stopenvironment
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