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if not modules then modules = { } end modules ['symb-emj'] = {
version = 1.001,
comment = "companion to symb-emj.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local symbols = fonts.symbols
local resolvedemoji = characters.emoji.resolve
local processfeatures = fonts.handlers.otf.featuresprocessor
local injectspacing = nodes.injections.handler
local protectglyphs = nodes.handlers.protectglyphs
local tonodes = nodes.tonodes
local currentfont = font.current
local nuts = nodes.nuts
local tonode = nuts.tonode
local tonut = nuts.tonut
local remove_node = nuts.remove
local isglyph = nuts.isglyph
local getnext = nuts.getnext
local function removemodifiers(head)
local head = tonut(head)
local current = head
while current do
local char = isglyph(current)
if char and (char == 0x200D or (char >= 0x1F3FB and char <= 0x1F3FF)) then
head, current = remove_node(head,current,true)
else
current = getnext(current)
end
end
return tonode(head)
end
-- fast enough, no need to memoize, maybe use attributes
local function checkedemoji(name,id)
local str = resolvedemoji(name)
if str then
if not id then
id = currentfont()
end
local head = tonodes(str,id,nil,nil,true) -- use current attributes
head = processfeatures(head,id,false)
if head then
head = injectspacing(head)
protectglyphs(head)
return removemodifiers(head)
end
end
end
symbols.emoji = {
resolved = resolvedemoji,
checked = checkedemoji,
}
interfaces.implement {
name = "resolvedemoji",
actions = { resolvedemoji, context.escaped },
arguments = "string",
}
interfaces.implement {
name = "checkedemoji",
actions = { checkedemoji, context },
arguments = "string",
}
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