On 7/26/2022 8:18 AM, Max Chernoff via ntg-context wrote:
Hi Hans,
The new tex.preparelinebreak is great (thanks again), but I can't seem
to figure out how to manipulate the parfillskip nodes that it adds.
MWE:
\newbox\testbox
\startluacode
function test(head)
if head.id ~= node.id "par" then
return head
end
new_head = node.copylist(head)
tex.preparelinebreak(new_head)
local parfillskip = node.tail(new_head)
inspect(parfillskip) -- Confirm that this really is a parfillskip
parfillskip.stretchorder = 0
parfillskip.stretch = 0
local broken = tex.linebreak(new_head)
tex.setbox("global", "testbox", broken)
return head
end
\stopluacode
\starttext
{\dorecurse{209}{Hello }\par}\page
{\parfillskip=0pt\dorecurse{209}{Hello }\par}\page
{\ctxlua{nodes.tasks.appendaction("processors", "after", "test")}
\dorecurse{209}{Hello }\par}\page
\box\testbox
\stoptext
I would expect that pages 1 and 3 would be identical, and that pages 2
and 4 would be identical. However, page 4 is the same as pages 1 and 3,
which isn't what I'd expect. I can do a similar idea in LuaTeX/MkIV and
get the expected results, so I'm not too sure what I'm doing wrong here.
I'm probably just missing something obvious, but I'm not too sure what.
Any ideas?
looks like i don't update something, i'll fix it (probably bin later today)
btw, you can do this:
local h, t, pil, pir, pfl, pfr = tex.preparelinebreak(new_head)
inspect(pfr)
pfr.stretchorder = 0
pfr.stretch = 0
as well as use
tex.show(broken)
to see the result
Hans
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