To post back to the list, this was resolved:
https://github.com/greghendershott/racket-mode/issues/499
On Wednesday, October 14, 2020 at 8:48:43 PM UTC-4, primer wrote:
>
> I'm trying to use (debug-repl) in the following simple program:
>
> #lang racket
> (require debug/repl)
>
> (define (add a b)
> (debug-repl)
> (+ a b))
>
> (add 4 5)
>
> If I run this in Dr. Racket, then I get a repl prompt as expected.
> However, I'm using Greg Hendershott's racket-mode for emacs, where it blows
> up with the following:
>
> ;
> ; Welcome to Racket v7.8.
> ;
> >
> ; cache-set!: contract violation
> ; expected: path-string?
> ; given: #f
> ; in: the 6th argument of
> ; (->
> ; path?
> ; syntax?
> ; syntax?
> ; string?
> ; namespace?
> ; path-string?
> ; any)
> ; contract from: (function cache-set!)
> ; blaming:
> d:\data\prj\EmacsUnification\emacs\home\.emacs.d\elpa\racket-mode-20200924.1506\racket\syntax.rkt
> ; (assuming the contract is correct)
> ; at:
> d:\data\prj\EmacsUnification\emacs\home\.emacs.d\elpa\racket-mode-20200924.1506\racket\syntax.rkt:89.18
>
> I'm not sure if this is a bug or a setup issue. FWIW, I'm setting up
> racket-mode in my .emacs file as follows:
>
> (use-package racket-mode)
> (add-to-list 'auto-mode-alist '("\\.rkt\\'" . racket-mode))
> (require 'racket-xp)
> (add-hook 'racket-mode-hook #'racket-xp-mode)
> (add-hook 'racket-xp-mode-hook
> (lambda ()
> (remove-hook 'pre-redisplay-functions
> #'racket-xp-pre-redisplay
> t)))
>
> Has anyone had any luck getting these two things to play nice?
>
>
>
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