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if not modules then modules = { } end modules ['node-shp'] = {
version = 1.001,
comment = "companion to node-ini.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local hlist = node.id('hlist')
local vlist = node.id('vlist')
local disc = node.id('disc')
local mark = node.id('mark')
local kern = node.id('kern')
local glue = node.id('glue')
local free_node = node.free
local remove_node = node.remove
local function cleanup_page(head) -- rough
local start = head
while start do
local id = start.id
if id == disc or (id == glue and not start.spec) or (id == kern and start.kern == 0) or id == mark then
head, start, tmp = remove_node(head,start)
free_node(tmp)
elseif id == hlist or id == vlist then
local sl = start.list
if sl then
start.list = cleanup_page(sl)
start = start.next
else
head, start, tmp = remove_node(head,start)
free_node(tmp)
end
else
start = start.next
end
end
return head
end
nodes.cleanup_page_first = false
function nodes.cleanup_page(head)
-- about 10% of the nodes make no sense for the backend
if nodes.cleanup_page_first then
head = cleanup_page(head)
end
return head, false
end
local actions = tasks.actions("shipouts",0) -- no extra arguments
function nodes.process_page(head) -- problem, attr loaded before node, todo ...
return actions(head)
end
--~ nodes.process_page = actions
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