On Fri, Nov 2, 2012 at 10:12 PM, Procházka Lukáš <LPr@pontex.cz> wrote:

> Hello,
>
> I encountered a weird error.
>
> The following code prints correctly to the console:
>
> ----
> \starttext
>   \startluacode
>     print("\n@T")
>   \stopluacode
>
>   Abc
> \stoptext
> ----
>
> Gives correct:
>
> "
> ...
> fonts           > virtual math > unable to resolve name mapsfromchar
> fonts           > fallback modern rm 12pt is loaded
>
> @T
> backend         > xmp > using file 'c:/ConTeXt/tex/texmf-context/**
> tex/context/base/lpdf-pdx.xml'
> ...
> "
>
> But the following code fails (?!):
>
> ----
> \starttext
>   \startluacode
>     print("\nT")
>   \stopluacode
>
>   Abc
> \stoptext
> ----
>
> With:
>
> "
> ...
> fonts           > fallback modern rm 12pt is loaded
> ! Undefined control sequence.
>
> system          > tex > error on line 4 in file D:/Lukas/ConTeXt/Test/Env3/
> **Test.mkiv: Undefined control sequence ...
>
> 1     \starttext
> 2       \startluacode
> 3         print("\nT")
> 4 >>    \stopluacode
> 5
> 6       Abc
> 7     \stoptext
> 8
>
>     print("\nT
>                            ")
> \luat_start_lua_code_indeed ...tlua \zerocount {#1
>                                                   }}
> l.4   \stopluacode
> ...
> "
>
> Any explanation?
>
It's about catcode. You can the difference with
\loggingall
\startluacode
 context("\n@T")
  \stopluacode
\stoptext

and
\loggingall
\startluacode
 context("\nT")
  \stopluacode
\stoptext


-- 
luigi