Variable: prettify-symbols-alist
prettify-symbols-alist is a buffer-local variable defined in
prog-mode.el.gz.
Documentation
Alist of symbol prettifications.
Each element looks like (SYMBOL . CHARACTER), where the symbol matching SYMBOL (a string, not a regexp) will be shown as CHARACTER instead.
CHARACTER can be a character, or it can be a list or vector, in
which case it will be used to compose the new symbol as per the
third argument of compose-region.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/prog-mode.el.gz
(defvar-local prettify-symbols-alist nil
"Alist of symbol prettifications.
Each element looks like (SYMBOL . CHARACTER), where the symbol
matching SYMBOL (a string, not a regexp) will be shown as
CHARACTER instead.
CHARACTER can be a character, or it can be a list or vector, in
which case it will be used to compose the new symbol as per the
third argument of `compose-region'.")