Issues

• XML boxes have not provided user-facing error messages for BSL

  enhancement
  racket/htdp#265 · Filter by author shhyou opened on Sep 3, 2026

• Support type-annotated struct definitions

  signature
  racket/htdp#259 · Filter by author bugcounting opened on Mar 25, 2026
  5

• Signature definitions without signature

  signature
  racket/htdp#256 · Filter by author bugcounting opened on Mar 25, 2026
  3

• Alias mixed as one-of

  signature
  racket/htdp#255 · Filter by author bugcounting opened on Mar 25, 2026
  3

• Stepper loops on Omega

  bugstepper
  racket/htdp#254 · Filter by author jasonhemann opened on Feb 18, 2026
  4

• Problem With Algebraic Stepper Scrolling To Top?

  stepper
  racket/htdp#250 · Filter by author spdegabrielle opened on Nov 24, 2025
  4

  

• Allow for removing the inset in 2htdp/universe

  enhancementteachpack
  racket/htdp#235 · Filter by author a11ce opened on Dec 11, 2024
  1

• port-writes-special? ⊂"running under Dr Racket"

  test engine
  racket/htdp#234 · Filter by author greghendershott opened on Dec 7, 2024
  2

• Stepper does not step for check-satisfied

  enhancementsteppertest engine
  racket/htdp#232 · Filter by author shhyou opened on Nov 16, 2024
  4

  

• HTDP Signatures - missing Image type in BSL

  signature
  racket/htdp#202 · Filter by author klauso opened on Sep 23, 2023
  7

• test coverage false negative in #lang htdp/bsl

  racket/htdp#200 · Filter by author bremner opened on Sep 18, 2023
  21

• Make *test-object* in test-engine a parameter

  test engine
  racket/htdp#199 · Filter by author dbp opened on Aug 13, 2023
  6

• Support for transparent overlays

  teachpack
  racket/htdp#175 · Filter by author mikekben opened on Sep 12, 2022
  3

• Warn when tracing is enabled with big-bang?

  teachpack
  racket/htdp#170 · Filter by author maueroats opened on Apr 6, 2022

• Using stepper on template

  stepper
  racket/htdp#168 · Filter by author chgus0202 opened on Feb 19, 2022
  8

  

• Expose image=? from BSL

  teachpack
  racket/htdp#164 · Filter by author jestarray opened on Dec 16, 2021
  4

• [ASL] Value of set!

  bugenhancement
  racket/htdp#162 · Filter by author a11ce opened on Nov 12, 2021
  1

• Support for flipping text? for emojis

  good first issueteachpack
  racket/htdp#161 · Filter by author jestarray opened on Oct 15, 2021
  3

• stepper fails for unbound id in test position of check-expect

  steppertest engine
  racket/htdp#153 · Filter by author jbclements opened on Jul 15, 2021
  26

• Race Condition in the Test Engine When There are Multiple Files

  test engine
  racket/htdp#150 · Filter by author shhyou opened on May 10, 2021

• color-list->bitmap doc vs. DrRacket rendering

  racket/htdp#148 · Filter by author DexterLagan opened on Apr 28, 2021
  11

• Docking of test window appears not to work with stepper window

  stepper
  racket/htdp#147 · Filter by author jbclements opened on Apr 28, 2021

• BSL decimal number values paste as non-textual

  racket/htdp#134 · Filter by author rxg opened on Feb 12, 2021
  6

• stepper doesn't handle check-error with 1 arg correctly

  bugstepper
  racket/htdp#131 · Filter by author jbclements opened on Jan 25, 2021
  

• new check-expect output with large values is hard to read

  test engine
  racket/htdp#122 · Filter by author samth opened on Nov 25, 2020
  2