[NTG-context] lua-widow-control module error in LMTX

Max Chernoff mseven at telus.net
Fri Apr 29 02:38:22 CEST 2022

On 2022-04-28 3:30 a.m., Henning Hraban Ramm wrote:
> I’m afraid the above release introduced a bug; while the offical release 
> ran through, I now get:
> module          > lua-widow-control > Widow/orphan detected. Attempting 
> to remove.
> lua error       > lua error on line 112 in file de/c_intro.tex:
> callback error: 
> ...local/tex/luatex/lua-widow-control/lua-widow-control.lua:510: attempt 
> to perform arithmetic on a nil value (field 'height')
> stack traceback:
>      ...local/tex/luatex/lua-widow-control/lua-widow-control.lua:510: in 
> function <...local/tex/luatex/lua-widow-control/lua-widow-control.lua:360>

On 2022-04-28 4:54 a.m., Eduardo Bohoyo wrote:
> Here testing that beta version.
> As you know, my book is in grid mode, but I get the same error message 
> as Hraban when the compilation crashes.
> However, when I comment grid again in my document, it does compile the pdf.

Well that's why it was a beta :) Looks like I made some questionable assumptions
about the order of the hlist/baselineskip nodes, so the module completely broke
with things as simple as section headings.

Hopefully this new beta should fix things:


Grid snapping is a little peculiar, so let me know if you find any more bugs.

And thanks for the bug reports.
-- Max

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