\startluacode and macro names with underscores

\startluacode and macro names with underscores

[Marco Patzer]

Hi,

the luacode environment chokes on macro names with underscores.
Example:

\starttext
\unprotect

\def\number_two{two}

\startluacode
  userdata = userdata or { }
  function userdata.number_one() context("one") end

  -- works
  userdata.number_one()

  -- fails
  -- context.number_two()

  -- workaround
  tex.print("\\number_two")
\stopluacode

\protect
\stoptext

Why is that and what can be done to access underscored macros in the
usual way? I guess it's some catcode change from the function that
prints into the TeX stream.


Marco

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Re: \startluacode and macro names with underscores

[Wolfgang Schuster]

Am 04.09.2012 um 15:40 schrieb Marco Patzer <homerow@lavabit.com>:

> Hi,
> 
> the luacode environment chokes on macro names with underscores.
> Example:
> 
> \starttext
> \unprotect
> 
> \def\number_two{two}
> 
> \startluacode
>  userdata = userdata or { }
>  function userdata.number_one() context("one") end
> 
>  -- works
>  userdata.number_one()
> 
>  -- fails
>  -- context.number_two()
> 
>  -- workaround
>  tex.print("\\number_two")
> \stopluacode
> 
> \protect
> \stoptext
> 
> Why is that and what can be done to access underscored macros in the
> usual way? I guess it's some catcode change from the function that
> prints into the TeX stream.


Use this in your Lua code:

context.unprotect()
context.number_two()
context.protect()

Wolfgang
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \startluacode and macro names with underscores

[Hans Hagen]

On 4-9-2012 15:40, Marco Patzer wrote:
> Hi,
>
> the luacode environment chokes on macro names with underscores.
> Example:
>
> \starttext
> \unprotect
>
> \def\number_two{two}
>
> \startluacode
>    userdata = userdata or { }
>    function userdata.number_one() context("one") end
>
>    -- works
>    userdata.number_one()
>
>    -- fails
>    -- context.number_two()
>
>    -- workaround
>    tex.print("\\number_two")
> \stopluacode
>
> \protect
> \stoptext
>
> Why is that and what can be done to access underscored macros in the
> usual way? I guess it's some catcode change from the function that
> prints into the TeX stream.

\starttext

\unprotect
     \def\number_two{two}
\protect

\startluacode
     userdata = userdata or { }
     function userdata.number_one() context("one") end

     userdata.number_one()

     context.unprotect()
     context.number_two()
     context.protect()

     context.pushcatcodes("prt")
     context.number_two()
     context.popcatcodes()

\stopluacode

\stoptext

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
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