Hi Uwe, you might know the package algpseudocodex which is based on algpseudocode and uses the same syntax. I thought making an AUCTeX style algpseudocodex.el is straight forward, and while copying the file, I thought I can touch the user interface, so I added the function `LaTeX-arg-algpseudocodex-block'. The file is attached. Do you want to give it a try and see if it has a better user experience? If so, I can also update algpseudocode.el accordingly.
TIA. Best, Arash
algpseudocodex.el
Description: application/emacs-lisp