Hello,
I'm using Hans' macro suggested some time before.
I've just updated Ctx MkIV and my sample code:
----
\starttext
\def\MyMacro{Ahoj}
\def\MyMacWithPars#1#2{Something}
\def\Undefined{}
\let\Undefined\undefined
\def\DoNothing{}
\let\DoNothing\donothing
\startluacode
if CONTEXTLMTXMODE == 0 then
local d = tokens.defined
local c = tokens.create
function tokens.defined(s,b)
if b then
return d(s)
else
return c(s).cmd_name == "undefined_cmd"
end
end
end
--
local defined = tokens.defined
for _, v in ipairs{ "MyMacro", "MyMacWithPars", "Undefined", "DoNothing", "NonExisting" } do
print(string.format("\letterpercent-12s", v), defined(v), defined(v, true), defined(v, false))
end
\stopluacode
Aaa
\stoptext
----
gives:
"
MyMacro false false false
MyMacWithPars false false false
Undefined false false false
DoNothing false false false
NonExisting false false false
"
IOW, I'm not able to determine whether a control sequence has not been defined (or has \undefined value) or not.
Am I doing a trivial mistake or has anything changed?
Thank you for patience...
Lukas
<IsMacDef3.log><IsMacDef3.mkiv><IsMacDef3.log_>___________________________________________________________________________________
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-contextwebpage :
http://www.pragma-ade.nl /
http://context.aanhet.netarchive :
https://bitbucket.org/phg/context-mirror/commits/wiki :
http://contextgarden.net___________________________________________________________________________________