Emacs: Highlight Brackets
- Alt+x
show-paren-mode
- highlight matching brackets when your cursor is on a bracket.
Note: it highlights any bracket, including [] {} 『』 【】 〈〉 «» etc. [see Unicode: Brackets, Quotes «»「」【】《》]

Set in Init File
put this in your Emacs Init File:
;; highlight matching paren (show-paren-mode 1)
Styles of Show Matching Paren
put this in your Emacs Init File:
;; highlight brackets (setq show-paren-style 'parenthesis)
;; highlight entire expression (setq show-paren-style 'expression)
;; highlight brackets if visible, else entire expression (setq show-paren-style 'mixed)
Emacs, Work with Brackets
- Emacs: Highlight Brackets
- Emacs: Insert Bracket Pairs, electric-pair-mode
- Emacs: Insert Brackets by Pair 🚀
- Emacs: Delete Brackets by Pair 🚀
- Emacs: Move Cursor to Bracket 🚀
- Emacs: Jump to Matching Bracket 🚀
- Emacs: Change Brackets/Quotes 🚀
- Emacs: Navigate Lisp Code as Tree
- Emacs: Select Line, between Quotes, Extend Selection 🚀
- Emacs: Xah Elisp Mode