Bash should be fine. On typical Bash installation I think this will work (please try to understand each command line before you actually try):

$ cp ~/.bashrc ~/.bashrc.bak
$ cp ~/.bash_history ~/.bash_history.bak
$ printf 'set +o history' >> ~/.bashrc
$ printf "sudo apt update\nsudo apt upgrade\n" > .bash_history
$ (Press Ctrl+D to logout)

For the next bash session you can refer only the two commands from the history with Up/Down/C-p/C-n.

Long ago I made such restricted shell with filtering the shell command history file then disabling command history logging. With some shell scripting, I think you can get more sophisticated version. What shell are you using? (Bash, Fish, Zsh, etc.)

Not a direct solution but GET /api/v3/site may help.

The repository has Makefile so you can build the executable with make:

$ cd /tmp
$ git clone https://git.sr.ht/~leon_plickat/lswt
$ cd lswt
$ make
$ ./lswt
$ sudo make install (optional)

I think https://git.sr.ht/~leon_plickat/lswt may work.

Some applications can’t display some Unicode strings like s̵t̵r̵o̵k̵e̵, so replacing Markdown element like ~strike~ with Unicode equivalent (s̵t̵r̵o̵k̵e̵ ) may not be a good idea if you want portability. I opened your post in text editors and noticed that neovim-qt drops s̵t̵r̵o̵k̵e̵’s combining characters (issue on Github) and just displays stroke instead of s̵t̵r̵o̵k̵e̵; GUI Emacs with my font settings (Noto) doesn’t combine the characters and displays s-t-r-o-k-e- (as I said, this may depends on font settings).

Can you get the stack trace with (setq debug-on-error t)? The error means rx got wrong regex form like (rx (** 3 2 "a")) or (rx (** 3 nil "a")).

I don’t know why the motion didn’t work in Evil mode, but if the goal is deleting all invisible Unicode characters, I’d write a command like this:

(defun my/delete-invisibles-in-region (start end)
  "Delete invisible characters in the region specified with START and END."
  (interactive "r")
  (save-excursion
    (replace-regexp "\u200B\\|\u200C" "" nil start end))
    ;; (query-replace-regexp "\u200B\\|\u200C" "" nil start end))
  (deactivate-mark))

Try glyphless-display-mode:

https://emacs.stackexchange.com/questions/65108/zero-width-space-shows-as-underscore

Cheese Day