Dear Peter,
> More a lua design decision. 'nil' is equal to 'false' here
I know no CS theory behind lua design, but try this:
\starttext
\startluacode
if nil == false then
io.write("nil == false\n")
end
if nil ~= false then
io.write("nil ~= false\n")
end
\stopluacode
TEST
\stoptext
and get
nil ~= false
As checkedkey is for reading parameter tables, based on user input,
there may be real difference between a property not set (i.e. nil) and
one set to be false. What if the default setting is true, for example?
Michail
___________________________________________________________________________________
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
___________________________________________________________________________________
