() Paul Smith <psm...@gnu.org> () Sun, 22 Jan 2012 16:56:19 -0500 ;; Printable string (no special characters) ((and (string? x) (eq? (string-length (string-delete x char-set:printing)) 0)) x)
It's trying to determine if the string contains any non-printable chars. How can I write this [...] Use ‘and-map’ with a predicate wrapped around ‘char-set:printing’ directly.