[NTG-context] TeX capacity exceeded - in Lua block - why?

Procházka Lukáš Ing. - Pontex s. r. o. LPr at pontex.cz
Thu Jul 16 10:20:32 CEST 2015


Hello,

why this code:

----
\def\GG{\ifmmode G_G\else$\GG$\fi}

\starttext
   \GG $\GG$ % OK
   \startitemize[][]
     \sym{\GG} \GG % OK
   \stopitemize

   \startluacode
     context.startitemize()
       context.sym([[\GG]])
       context("Abc")
     context.stopitemize()
   \stopluacode
\stoptext
----

fails with:

"
...
tex error       > tex error on line 14 in file d://Lukas/Docs/Ull-Gra/Test/Abr.mkiv: ! TeX capacity exceeded, sorry [input stack size=10000]


\GG ->\ifmmode G_G\else $\GG
                              $\fi
\GG ->\ifmmode G_G\else $\GG
                              $\fi
\GG ->\ifmmode G_G\else $\GG
                              $\fi
\GG ->\ifmmode G_G\else $\GG
                              $\fi
\GG ->\ifmmode G_G\else $\GG
                              $\fi
\GG ->\ifmmode G_G\else $\GG
                              $\fi
...
l.14   \stopluacode
...
"

I need to call "\GG" from within Lua, and the real macro name is created run-time (contrary to this MNWE; so to be \GG, \HH, \Fik etc. - the name is obtained from a Lua table as a string).

I cannot understand why all TeX calls are OK but the problem appears in Lua block...

Best regards,

Lukas


-- 
Ing. Lukáš Procházka | mailto:LPr at pontex.cz
Pontex s. r. o.      | mailto:pontex at pontex.cz | http://www.pontex.cz
Bezová 1658
147 14 Praha 4

Tel: +420 241 096 751
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