Updating from emacs-29 to emacs-30, I am no longer able to use C-x as a non-prefix key. I have always hated the C-x prefix, as I use C-x for next-line. I am still able to set C-] as my Control-X-prefix, but I can no longer get C-x mapped to 'next-line. I had been using define-key with a custom overriding-local-map, but that is no longer working
In GNU Emacs 30.2 (build 1, aarch64-apple-darwin21.6.0, NS appkit-2113.60 Version 12.6.1 (Build 21G217)) of 2025-08-14 built on builder-m1-12.lan Windowing system distributor 'Apple', version 10.3.2685 System Description: macOS 26.0
Important settings: value of $LANG: C.UTF-8 locale-coding-system: utf-8-unix
Major mode: Info
Minor modes in effect: global-tab-line-mode: t tab-line-mode: t which-function-mode: t desktop-save-mode: t tooltip-mode: t global-eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t isearch-fold-quotes-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t minibuffer-regexp-mode: t buffer-read-only: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t