A series of notes that I learn Emacs hacking. Basic key mapping and functions; Emacs start up settings; introduction to "modes", company-mode; basic of package management; introduction to org-mode.

Emacs basics

Key meaning

• M-x: execute an interactive function
• C-x C-f: Open file
• C-x C-s: Save file
• C-h k: find the meaning of a key
• C-h v: find the meaning of a variable
• C-h f: find the meaning of a function. By default, it is the function that the current cursor points to.
• q: quit buffer (for example, quit the help buffer opened just now.)
• C-x C-e: Execute elisp functions

Navigation keys

• C-f: next char
• C-b: previous char
• C-n: next line
• C-p: previous line
• M-v: previous screen (page)
• C-v: next screen (page)
• =M-=b: move backward by word
• M-f: move forward by word
• C-m: add a new blank line

TO Read: https://learnxinyminutes.com/docs/elisp/ and the official tutorial

Functions

• (interactive): make the function available to M-x, but remember first C-x C-e the function.
• (global-set-key (kbd "<the-key-to-bind>") 'function-name): bind a global key to execute the function.

itialization

• Things will disappear once we exit Emacs. So we need to save it first
• Save everything that need to run to C:\Users\yout-user-name\AppData\Roaming\.emacs.d\init.el

Miscellaneous initialization configurations

• (tool-bar-mode -1): hide tool bar.
• (scroll-bar-mode -1): turn off scroll bar.
• (global-inum-mode t): show line number.
• (electric-indent-mode -1): deal with the indent (optional).
• (setq inhibit-splash-screen t): do not open the welcome page each time we open Emacs.
• (setq-default cursor-type 'bar): Change cursor.

About modes

• Major mode: the [] at the bottom. There is only one Major mode for each file.
• Minor mode: tool-bar-mode is minor mode. No minor bar limit for the file.

Package management

• Options -> Manage Emacs Packages.
• C-h m: show all the minor mode.

company mode

• Means “Complete anything”, not literally “company”.
• Install it in the package management
• M-x company-mode: Enable the company mode
• (global-company-mode t): enable it with emacs-lisp code

Introduction to Org-mode

• GTD (get things done)
• Tab key to toggle lists.
• M-x org-mode
• C-c C-t to toggle TODO DONE None at list item.