bug#41956: [PATCH] ice-9: exceptions: Properly format the error message.

[Maxim Cournoyer]

Hello Bengt!

Bengt Richter <bokr@bokr.com> writes:

> Hi Maxim,
>
> tl;dr:
> Does module/ice-9/exceptions.scm use the default format?
> Maybe (use-modules (ice-9) format) will help get to the next bug ?? :)

Thanks for suggesting!  I tried but got the same result.

I'm now testing a slightly different version:

@@ -189,7 +189,10 @@
           ((subr msg margs . _)
            (make-exception
             (make-exception-with-origin subr)
-            (make-exception-with-message msg)
+            (let ((msg (if (list? margs)
+                           (apply simple-format #f msg margs)
+                           msg)))
+                (make-exception-with-message msg))
             (make-exception-with-irritants margs)))
           (_ (make-exception-with-irritants args)))
          args))

Maxim