@ -11,7 +11,7 @@
(define (to-string x)
(if (string? x)
x ; fast exit for strings
(with-handlers ([exn:fail? (λ(exn) (error "Can't convert ~a to ~a" x 'string))])
(with-handlers ([exn:fail? (λ(exn) (error (format "Pollen parser: can't convert ~a to ~a" x 'string)))])
(cond
[(equal? '() x) ""]
[(symbol? x) (symbol->string x)]