sxml xpath exports "filter" which is incompatible with the common procedure of the same name.
I suggest renaming unless it breaks a lot of code.
I use
#:use-module ((sxml xpath)
#:renamer (lambda (s) (if (eq? s 'filter) 'xp-filter s)))
but would rather other agree that renaming in sxml/xpath.scm is better.
Matt
