Petr,

phodina 写道：
> Here's the modification:
>
> (define (config->string options)
>   (string-join (map (match-lambda
>                       ((option . 'm)
>                        (string-append option "=m"))
>                       ((option . #t)
>                        (string-append option "=y"))
>                       ((option . #f)
>                        (string-append option "=n"))
>                       ((option . number)
>                        (string-append option "=" number))
>                     options)
>                "\n"))

At this point, (option . number) will match anything.

You're not matching numbers here: ‘number’ is your chosen variable 
name, not magic.  It could be ‘foo’.  It could be anything, 
without changing the effect of this code.

>                       ((option . string)
>                        (string-append option "=\"" string 
>                        "\"")))

This will never be reached.

I'm almost certain that this is, at least in part, why your BINDER 
configuration isn't taking effect.

Here's mine:

(define option->string
  (match-lambda ((option . #f)
                 (format #f "# ~a is not set" option))
                ((option . #t)
                 (format #f "~a=y" option))
                ((option . 'm)
                 (format #f "~a=m" option))
                ((option . (? number? value))
                 (format #f "~a=~a" option value))
                ((option . (? string? value))
                 (format #f "~a=\"~a\"" option value))))

Kind regards,

T G-R