something like this
\enabletrackers[structures.notes]
\setupnotedefinition[footnote][location=left,distance=1em,hang=4,headalign=flushright]
\startluacode
local n, ranges, pages = 0, { }, { }
for k, v in ipairs(structures.lists.collected) do
if v.metadata.kind == "description" and v.metadata.name ==
"footnote" then
local realpage = v.references.realpage
local number = v.numberdata.numbers[1]
local range = ranges[realpage]
if not range then
range = { min = 0, max = 0 }
ranges[realpage] = range
end
if number < range.min then
range.min = number
end
if number > range.max then
range.max = number
end
pages[number] = range
end
end
function document.dosomething()
n = n + 1
local range = pages[n]
if range then
context.setupnotedefinition(
{ "footnote" },
{ sample = range.max }
)
end
end
\stopluacode
\appendtoks
\ctxlua{document.dosomething()}
\to \everybeforenoteinsert
\showframe
\starttext
\dorecurse {200} {test\footnote{test} }
\stoptext
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