To add to that a little bit, this is what I found:
#lang multi-file
#file param.rkt
#lang racket
(provide my-param)
(define my-param (make-parameter 'default))
#file param-test.rkt
#lang racket
(require "param.rkt")
(define-namespace-anchor a)
(parameterize ([current-namespace (make-base-namespace
The `make-base-namespace` function creates a new namespace, but it
attaches the `racket/base` instance of the current namespace to the new
one. The `error-print-width` parameter comes from `racket/base`, so
it's still the same parameter.
You can use `namespace-attach-module` to attach "param.rkt"
In the example below, I'm curious about the reason for the difference between
the behavior of the system parameter `error-print-width` and the custom
parameter `my-param`.
I understand why `my-param` doesn't take the parameterized value 'custom (=
because `namespace-require` causes a fresh ins
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