Rich-text is an emacs package to render rich text with overlays. Even after the file buffer is killed or emacs is closed, rich text can still be restored when it is opened again.

Github: https://github.com/Kinneyzhang/rich-text

Demo

Configuration

(use-package rich-text
  :load-path "/path/to/rich-text"
  :init (setq rich-text-selected-ignore-modes '(prog-mode))
  :config (rich-text-mode 1))

• rich-text-selected-ignore-modes is a list of major modes. Local keybindings will be ignored in major modes and the derived ones when a region is active.

Usage

use define-rich-text and define-rich-text-dwim macros to customize your own rich text format.

some built-in ones

There are some built-in rich-text formats:

rich-text	key
headline-1	h1	set rich-text-headline-1-height to customize the default height.
headline-2	h2	set rich-text-headline-2-height to customize the default height.
headline-3	h3	set rich-text-headline-3-height to customize the default height.
underline-line	ul	straight underline
underline-wave	uw	wave underline
bold	bb	set rich-text-bold-type to customize the default type of bold.
italic	ii	set rich-text-italic-type to customize the default type of italic.
fontcolor	cc	set rich-text-fontcolor-light to customize the default font color in light theme.
		set rich-text-fontcolor-dark to customize the default font color in dark theme.
highlight	vv	set rich-text-highlight-light-color to customize the default highlight color in light theme.
		set rich-text-highlight-dark-color to customize the default highlight color in light theme.

• the type of bold should be one of the symbols ultra-bold extra-bold bold semi-bold normal semi-light light extra-light ultra-light.
• the type of italic should be one of the symbols italic oblique normal reverse-italic reverse-oblique.

define-rich-text

(define-rich-text NAME KEY PROPS) could be used to define a simple rich-text format. NAME is the name of rich-text format. KEY is the keybinding. PROPS is elisp text properties.

For example, the elisp below define a rich-text format named bold-underline which is binded to two single keystrokes "bu". When you press key <bu> on a region, text in region will be rendered by text properties '(face (:weight bold :underline t))

(define-rich-text bold-underline "bu"
  '(face (:weight bold :underline t)))

define-rich-text-dwim

(define-rich-text-dwim NAME KEY &KEY PROPS LIGHT DARK) is an enhanced version of define-rich-text, which support setting specific properties for themes with light or dark background. And when the background of theme is changed, the rich-text properties will also be changed adaptably.

This feature is useful when you want to render different colors separately in light or dark themes, since a color suitable for light themes may not for dark themes, vice versa.

e.g.

(define-rich-text-dwim highlight-1 "v1"
  :light '(face (:background "#F7E987" :foreground "black"))
  :dark '(face (:background "#C58940" :foreground "white")))

rich-text-plus.el

rich-text-plus.el defined some other rich-text with my own preference. If you want to use them, just (require 'rich-text-plus) and feel free to modify them as you need.

You could find more useful rich-text properties in Special-Properties