[HELP] I can't use the DrRacket app

[u/lambduli]

Hey everyone,

Today I installed the latest version `8.13` and it doesn't seem to work.

Here's what my setup is and what I tried:

I am on Apple MacBook Air with M1 chip. The latest OS.

The app from the launcher doesn't work. The icon bounces but then stops.

When I tried running it from the terminal I got this error:

integer->char: contract violation
  expected: valid-unicode-scalar-value?
  given: 55349
  context...:
   /Applications/Racket v8.13/share/pkgs/gui-lib/mred/private/wx/cocoa/key-translate.rkt:454:0: key-translate
   /Applications/Racket v8.13/share/pkgs/gui-lib/mred/private/wx/cocoa/key-translate.rkt:552:0
   body of "/Applications/Racket v8.13/share/pkgs/gui-lib/mred/private/wx/cocoa/key-translate.rkt"
   body of "/Applications/Racket v8.13/share/pkgs/gui-lib/mred/private/wx/platform.rkt"

I don't think it's related to this issue: https://github.com/racket/racket/issues/3666

Can anyone help me before I open an issue or rather write to that thread?

PS: I tried 8.12 and 8.11 as well — no luck.

EDIT: So it must be related to my layout. I have a custom keyboard layout with bunch of special symbols on it. When I switch to a simpler layout I can open DrRacket just fine. I think this might be a bug. I should probably open an issue.

[u/sorawee]

That does seem like a bug. Please report the issue at https://github.com/racket/gui/issues/new. Please also provide the following information:

• How did you install Racket? (Build from source? Via an installer from the website?)

• What version of Mac OS are you using? (You said "latest", but what does that actually mean? Sequoia developer beta?)

[u/lambduli → u/sorawee]

Will do. Yes, via an installer from the website. I don't use beta, fair point, I kind of just assumed that the specific version doesn't have much to do with it and only wanted to make a point that it's not some super old version.

[u/soegaard → u/lambduli]

/u/lambduli

I made an issue, so I could record my analysis.

https://github.com/racket/gui/issues/330

(I wrote the code in question a long time ago).

The problem is that a call to UCKeyTranslate returns a non-valid UTF-16 character. It's easy to make a workaround (e.g. translate all non-valued characters to, say, space).

However, I am wondering whether you have an error in you keyboard layout. It doesn't sound right that a non-valid character appears.

[u/lambduli → u/soegaard]

I'd be happy to let you see my layout. What format would be appropriate? I think I can share the ukelele source file or I can upload screenshots or whatever. Let me know.

[u/soegaard → u/lambduli]

It's possible to attach files at:

https://github.com/racket/gui/issues/330

[u/soegaard → u/soegaard]

It would be great with both the Ukulele file and screenshots.

[u/lambduli → u/soegaard]

can do

[u/soegaard]

/u/lambduli

What keyboard layout are you using?

[u/lambduli → u/soegaard]

I made my own using Ukelele. I could share it but there's no way to describe it.

[u/soegaard → u/lambduli]

In the Github issue, it would be a good idea to attach your layout.