Am 04.08.18 um 19:44 schrieb Thomas de Vivo:
dear dev-luatex list,
I'm an estimator of (La)Tex and the
work done Donald Knuth -- as well as the work that
you all are doing -- and I'm following this list
since a while.
Few time ago I have been in touch with
Patrick Gundlach of https://www.speedata.de/en/
a publishing system based on LuateX.
My concern and goal would be to be able
to control the looseness of paragraphs while
paging a text, so to minimize widows and orphans
in the resulting document.
In practical terms, when the system finds that
a widow is being produced, then it tries to make
the relevant paragraph more dense, or even
more than one, in order to fit all the text
in the page. (This is not currently possible using Speedata)
I would like to know whether LuaTex offers such
control, on in other terms whether the pagination
algorithm is as sophisticated as the famous
linebreak algorithm of Tex/Latex. (thing in
my opinion highly desirable)
Alternatively, I would like to know what files
I have to check in the distribution of Lua
to reach such a result.
Thank you and kind regards
(Thomas)
as Hans said, there is no production code in that space, largely due to
the fact that the problems in that space are very difficult to solve
(often NP) and managing the real-life conflicting requirements is
challenging. And if you restrict yourself then the class of documents
that can be handled gets very limited.
I have done some research on that in the last couple of years and the
result can be found at:
https://www.latex-project.org/publications/indexbytopic/pagination/
Basically this proves that suitable results can be produced in adequate
time spans (under reasonable conditions) but so far I have only
published the research not any code --- doing the latter would mean
further work that I estimate at several hundreds of hours so I'm not
sure when that can be undertaken (unless I find sponsors for it)
frank
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