[luatex] Debugging the error 'Expected a string for (S), not: nil'
patrick at gundla.ch
Sun Nov 22 21:17:10 CET 2015
> I get the error
> "Expected a string for (S), not: nil"
> which seems to be related to callbacks. How can I debug, what is wrong with my code? Is something wrong with my callback re-defintions?
More information: it seems to happen while executing the following code:
tex.box = n
(n is a vlist node)
and this is the code related to printing the page number:
texio.write(string.format("> Shipout page %d\n",current_pagenumber))
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