On 2/26/2018 11:54 PM, Henri Menke wrote:
Dear list,
The EB Garamond font is lacking the ϵ glyph but it contains ε. So naturally you
want to remap ϵ to ε. It cannot be done using font features because the the
slot 0x03B5 (ϵ) is just missing, so substitution will not kick in. I tried
adapting the mechanism to add uppercase greek to Latin Modern Math from lm-
math.lfg. Unfortunately, my code is not working. What am I doing wrong?
Cheers, Henri
---
\startluacode
local patches = fonts.handlers.otf.enhancers.patches
local function patch(data,filename)
local uni_to_ind = data.map.map
if not uni_to_ind[0x3F5] then
patches.report("add ε for ϵ")
uni_to_ind[0x3F5] = uni_to_ind[0x3B5]
end
end
patches.register("after","missing glyphs","^ebgaramond*", patch)
\stopluacode
\setupbodyfont[ebgaramond]
\starttext
ε % = 03B5
ϵ % = 03F5
\stoptext
if you want to use the patch mechanism:
\startluacode
local function patch(data,filename)
data.descriptions[utf.byte("ϵ")] = data.descriptions[utf.byte("ε")]
end
fonts.handlers.otf.enhancers.patches.register("after","missing
glyphs","^ebgaramond*", patch)
\stopluacode
\setupbodyfont[ebgaramond]
\starttext
ϵ ε
\stoptext
or when you want to buse features:
\startluacode
fonts.handlers.otf.addfeature {
name = "ccmp", -- or "ebhack"
type = "substitution",
nocheck = true,
data = {
["ϵ"] = "ε",
}
}
\stopluacode
% \definefontfeature[default][default][ebhack=yes]
\setupbodyfont[ebgaramond]
\starttext
ϵ ε
\stoptext
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