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local cb = require ('minim-callbacks')
local M = { }
-- Add a callback just before a box is shipped out, opposite to
-- 'finish_pdfpage'.
cb.new_callback('pre_shipout', 'simple')
M.primitive_shipout = tex.shipout
function tex.shipout(nr)
cb.call_callback('pre_shipout', nr)
M.primitive_shipout(nr)
end
return M
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