Issue #19791 has been updated by ima1zumi (Mari Imaizumi). Can you tell me what version of `debug` and `Reline` you are using? Using the latest version of `Reline` may solve the problem. ---------------------------------------- Bug #19791: Debugger does not handle delete key correctly https://bugs.ruby-lang.org/issues/19791#change-104028 * Author: stuartb (Stuart Bury) * Status: Open * Priority: Normal * ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux-musl] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- When entering the debugger using `binding.debugger` or the `rdbg` command, pressing the delete key on the keyboard to delete characters at the REPL merely prints "^[[3~" to the console, and does not actually delete anything. This is **very** inconvenient. Can this be fixed somehow? I really like the new debugger, but my swearing like a sailor every time I hit "delete" is starting to really annoy my wife... It is worth noting that if I run the `pry` command and then, within pry, call `binding.debugger`, the delete key operates correctly. I believe the issue is related in some way to readline support, or the lack thereof – but my Ruby installation was compiled with readline support. I've tried everything I can think of, and spent some time on Google trying to solve it, but the problem remains. It happens in Alpine 3.18 and also in Debian 12. -- https://bugs.ruby-lang.org/