Hello,

I'm currently working on an embedding of the miniKanren logic programming language in Pharo (http://minikanren.org/) and I have run into an issue with the method compilation internals I was hoping someone could shed some light on:

miniKanren has an operator, fresh, that basically evaluates a block and returns a logic variable. My current syntax for a conjunction of logic variables is:

var1 and: var2

When I try to use the same syntax for fresh:

var1 and: [ :var2 | var2 ]

Compilation fails with "Warning: and: (or:) takes zero-arg block" which seems on first glance to come from the compiler attempting to inline my and: call. If I add an auxiliary method andFresh: that evaluates the block and and:'s the result in 2 steps, my tests pass.

What I'd like to know is:

1) Is there a work around to let me use the and: syntax here?

2) Might my overriding of and: and or: for normal logic variables cause other problems I'm not thinking of?

Obviously this is not a critical issue, but my code's aesthetics are at stake, and if we can't have pretty code, then what can we have?

Thanks,

Evan