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if not modules then modules = { } end modules ['typo-wrp'] = {
version = 1.001,
comment = "companion to typo-wrp.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- begin/end par wrapping stuff ... more to come
local nodecodes = nodes.nodecodes
local glue_code = nodecodes.glue
local penalty_code = nodecodes.penalty
local parfill_skip_code = nodes.gluecodes.parfillskip
local user_penalty_code = nodes.penaltycodes.userpenalty
local nuts = nodes.nuts
local tonut = nodes.tonut
local tonode = nodes.tonode
local find_node_tail = nuts.tail
local getprev = nuts.getprev
local getid = nuts.getid
local getsubtype = nuts.getsubtype
local getfield = nuts.getfield
local remove = nuts.remove
local wrappers = { }
typesetters.wrappers = wrappers
local trace_wrappers = trackers.register("typesetters.wrappers",function(v) trace_wrappers = v end)
local report = logs.reporter("paragraphs","wrappers")
-- we really need to pass tail too ... but then we need to check all the plugins
-- bah ... slowdown
local function remove_dangling_crlf(head,tail)
if tail and getid(tail) == glue_code and getsubtype(tail) == parfill_skip_code then
tail = getprev(tail)
if tail and getid(tail) == penalty_code and getsubtype(tail) == user_penalty_code and getfield(tail,"penalty") == 10000 then
tail = getprev(tail)
if tail and getid(tail) == penalty_code and getsubtype(tail) == user_penalty_code and getfield(tail,"penalty") == -10000 then
if tail == head then
-- can't happen
else
if trace_wrappers then
report("removing a probably unwanted end-of-par break in line %s (guess)",tex.inputlineno)
end
remove(head,tail,true)
return head, tail, true
end
end
end
end
return head, tail, false
end
function wrappers.handler(head)
local head = tonut(head)
if head then
local tail = find_node_tail(head)
local done = false
head, tail, done = remove_dangling_crlf(head,tail) -- will be action chain
end
return head, true
end
interfaces.implement {
name = "enablecrlf",
onlyonce = true,
actions = function()
nodes.tasks.enableaction("processors","typesetters.wrappers.handler")
end
}
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