[NTG-context] Learning LuaTeX : Invoice

Wolfgang Schuster schuster.wolfgang at googlemail.com
Sun Feb 20 14:29:42 CET 2011

Am 20.02.2011 um 13:58 schrieb Henning Hraban Ramm:

> \starttabulate[|lw(8cm)|rg(,)w(2cm)|rg(,)w(2cm)|rg(,)w(3cm)|]
> %\ctxlua{userdata.InvoiceLine("Play with \\LUATEX", 2.5)}
> \ctxlua{userdata.InvoiceLine("Do some \\CONTEXT", 0.5)}
> \ctxlua{userdata.InvoiceSumLine("Sum")}
> \stoptabulate

userdata.InvoiceLine("Do some \\CONTEXT", 0.5)

> That seems to work so far, but invoice.hours and invoice.sum are always doubled!
> In my letter setup, it’s even quadrupled!
> I guess my functions gets called several times, but how can I avoid that?

The content of tabulate is processed twice to get the information for
“p” columns and you get therefore the wrong values in the last row.


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