Re: [NTG-context] Accessing string contents of a macro in Lua.

24 Apr 2013


      On Wed, Apr 24, 2013 at 5:51 PM, Sietse Brouwer  wrote:
...
Hi all,
Below are three methods of defining a dimension / dimension string in
ConTeXt --- the first two boil down to storing a string in a macro,
the last is a proper TeX dimen. I want to access these dimensions from
Lua.
I can access the dimen via tex.dimen.ColumnC, but how can I access the
macro contents?
If there is no solution, I can always explicitly pass the value to Lua with
\ctxlua{var = '\measure{ColumnA}'}
, but I want to know if there is a Lua-only method to get these values.
%% MWE
\definemeasure[ColumnA][10mm]
\def\ColumnB{20mm}
not a general solution
%%%
\def\ColumnB{20mm}

\starttext
\startluacode
local c = "\\csname ColumnB\\endcsname"
context("ColumnB=%s",c)
\stopluacode

\par
\toks0=\expandafter{\ColumnB}
\startluacode
context("ColumnB=%s",tex.toks[0])
\stopluacode

\stoptext


--
luigi

Re: [NTG-context] Accessing string contents of a macro in Lua.

luigi scarso