Marius Vollmer <marius.vollmer@uni-dortmund.de> writes:
>
> Uhh, intuitively I'd say that this is wrong behavior.

One that's guile specific is let-optional and let-keywords, eg.

	(use-modules (ice-9 optargs))
	(let ()
	  (let-keywords '() #f ()
	    (define localvar 123))
	  localvar)

	=> 123

which could be fixed fairly easily,

        * optargs.scm (let-optional-template, let-keywords-template): Change
        "(begin body)" to "(let () body)" for empty bindings, since the former
        lets syntactically internal defines in body leak out to the
        surrounding environment.