I know what you mean. In my examples I think only Perl6 is stretching the definition of homoiconicity, NB. are Perl6 Grammars == data structure/primitive ?? H

I know what you mean. In my examples I think only Perl6 is stretching the definition of homoiconicity, NB. are Perl6 Grammars == data structure/primitive ?? However Rebol (blocks & words) & Io/Smalltalk (objects and messages) do fully meet the definition you give above for being an homoiconic language.