[luatex] tex.linebreak produces different baselineskip glues

Jeremie Knuesel knuesel at gmail.com
Wed May 31 15:44:00 CEST 2017


It seems that using tex.linebreak in the linebreak_filter callback produces
a different result (compared to the default with no callback): it changes
the spacing between paragraphs.

Consider the following:

% \directlua{ luatexbase.add_to_callback("linebreak_filter", tex.linebreak,
"texlinebreak") }

By setting parskip to 0pt this typesets the text on a grid. But uncomment
the \directlua call and you get additional space between paragraphs.

Is this known behavior? How can I build the paragraphs with tex.linebreak
and still get the expected vertical spacing?


Jeremie Knuesel
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