On 2/9/2016 1:28 PM, Jaroslav Hajtmar wrote:

Hello ConTeXist.

In the latest version ConTeXt it stopped working my macros which contents function he once advised me Taco. It is low level lua code. Can anyone advise me what the problem is, eventually. how to replace Lua code in my function to make it work again? Macros worked at least 6 years and now crashes.

Here is my function:

function thirddata.handlecsv.texmacroisdefined(macroname) -- check whether macroname macro is defined in ConTeXt -- function is used to test whether the user has defined the macro \macroname. If not, it needs to define any default value if token.csname_name(token.create(macroname)) == macroname then return true else return false end end

Is there any alternative (ConTeXt like), which is should be possible use in Lua code?

\starttext \startluacode function interfaces.defined(name) return token.get_cmdname(token.create(name)) ~= "undefined_cs" end if interfaces.defined("foo") then context("foo") else interfaces.setmacro("foo","bar") end \stopluacode \foo \stoptext I'll add interfaces.defined to the core. ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

This is an interesting feature for handling a call to an undefined macro (as might result from \csnam#1\endcsname, for example.

\starttext

\startluacode

function interfaces.defined(name) return token.get_cmdname(token.create(name)) ~= "undefined_cs" end

if interfaces.defined("foo") then context("foo") else interfaces.setmacro("foo","bar") end

\stopluacode

\foo

\stoptext

I'll add interfaces.defined to the core.

----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.comhttp://www.pragma-ade.com | www.pragma-pod.nlhttp://www.pragma-pod.nl -----------------------------------------------------------------

As an example I executed the following code: \starttext \framed{\ConTeXt-version = \contextversion}\blank \def\nofoo{This is nofoo} \startluacode if interfaces.defined("foo") then context("foo") else interfaces.setmacro("foo","nofoo") end \stopluacode \tex{foo} is undefined: "\foo"\crlf \def\foo{This is foo} \tex{foo} is defined: "\foo"\crlf \stoptext The result of the first call to \foo, however, is not "This is nofoo" but the name of the nofoo macro. I expected that \nofoo would have been executed instead. That would have been beneficial, because the missing macro \foo can then be substituted for something the programmer thinks useful. Is this correct? Or am I doing something wrong? Hans van der Meer