diff options
| -rw-r--r-- | geiser/doc.scm | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/geiser/doc.scm b/geiser/doc.scm index f5471b5..902f2a3 100644 --- a/geiser/doc.scm +++ b/geiser/doc.scm @@ -66,16 +66,17 @@ (else 'variable))) (define (arguments proc) - (define (p-arguments prog) - (map (lambda (a) ((@@ (system vm program) arity->arguments-alist) prog a)) - (or (program-arities prog) '()))) + (define (p-args prog) + (let ((as (map (lambda (a) + ((@@ (system vm program) arity->arguments-alist) prog a)) + (or (program-arities prog) '())))) + (and (not (null? as)) as))) (define (clist f) (lambda (x) (let ((y (f x))) (and y (list y))))) (cond ((is-a? proc <generic>) (generic-args proc)) + ((doc->args proc) => list) ((procedure-property proc 'arglist) => (clist arglist->args)) ((procedure-source proc) => (clist source->args)) - ((doc->args proc) => list) - ((program? proc) (let ((a (p-arguments proc))) - (and (not (null? a)) a))) + ((and (program? proc) (p-args proc))) ((procedure-property proc 'arity) => (clist arity->args)) (else #f))) |