Re: Paper size survey

[Mattes]

Am Dienstag, 21. April 2015 14:23 CEST, Simon Albrecht <address@hidden> schrieb:

> ... Yet I have taken inspiration from there to create the
> attached tool for making nice margins, which I’ve been using ever since.
>

Hmm, maybe I miss the obvious, but in your code:

 (define pair-or-rational? (or pair? rational?))

you might as well write (define pair-or-rational? pair?) since (or pair? 
rational?) allways evaluates to
pair? ...
Do you want

 (define pair-or-rational? (thing)
    (or
       (pair? thing)
       (rational? thing)))


Cheers, Ralf Mattes