Uploads from Xah Lee

Currently Playing: Xah Ep699 Emacs Lisp defvar-keymap, define-keymap , part 2

Video Summary AI Generated (human edited) This video focuses on updating Emacs Lisp code to use new, simpler key binding functions introduced in Emacs 29 (released two years ago). Here's a summary: The speaker explains that Emacs 29 brought significant changes to how keyboard shortcuts (key bindings) are defined, making the code much simpler and shorter compared to older versions (0:57, 9:02). In Emacs, every keystroke invokes a command, and users can assign keyboard shortcuts to any command (3:30, 6:42). The main goal of the video is to refactor the speaker's personal Emacs Lisp packages from using the old define-key function to the new define-var-keymap and keymap-set functions (10:05, 10:11). The speaker demonstrates this refactoring process for several packages, highlighting the reduction in code complexity and explaining how to handle "leader keys" for customizable major mode commands (24:00, 26:15). A new syntax for the tab key, specifically kbd "", is also introduced, which helps distinguish the tab key from the tab character, especially in terminal Emacs (30:37). Towards the end, the speaker answers viewer questions about Emacs key bindings, keyboard ergonomics, and using various keyboard layouts (41:00, 47:00).