> The syntax for this each you're trying to write is suspect

> perhaps you could consider something with a more regular syntax?

You're right. The more I think about it, the less I like this 'each idea.

> All this parsing / partial compilation smacks of over-engineering.

True, but this is also part of the fun here ;-)

> For all I know about Perl (which isn't much), it looks like its foreach works with explicit and implicit variables because you can consistently parse it -- you always have parentheses delimiting the array.

You are absolutely right here, and you made me realize I am actually trying to get something more dirty/complicated than in Perl, which is... really not a good sign :-D!

> Or you could rely on the Scheme reader recognizing curly-braces as parens

This is also an interesting option. Good to know.

> Sorry I don't have any better suggestions.