Plugins

Plugins are the most easy way to distribute an extension for remarkable.

Plugins are expected to be loaded using md.use(plugin[, opts]) (where md is your instance of Remarkable.).

Plugins are nothing more than a function taking two arguments:

1. md: the Remarkable instance on which the plugin needs to be activated
2. options: the set of options that has been provided to md.use

Plugins are then expected to add parsing and rendering rules and carry on appropriate modifications on the remarkable instance.

It’s as simple as that.

Extending remarkable and the Markdown syntax

Remarkable converts markdown to HTML in two steps:

1. Parsing markdown raw text to a list of tokens
2. Rendering the list of tokens to actual HTML code.

Parsing rules are divided into three differents kind of rules (core, block and inline).

To add a parsing rule, you will need to get the relevant parser for your rule (core, block or inline) and insert your rule at the appropriate position in the ruler.

For example, to add a new inline for strike-through, you’d need to do: md.inline.ruler.push("strike-through", strikeThroughInlineRule, { strokesCount: 2 }); where strikeThroughInlineRule is your parsing rule for strike-through.

To add a rendering rule, you need to follow exactly the same process, but using the ruler md.renderer.rules.

Rulers

Rulers provide four main methods to manage their rules:

• before(beforeName, ruleName, fn, options): inserts a new rule before the rule beforeName.
• after(afterName, ruleName, fn, options): inserts a new rule after the rule afterName.
• push(ruleName, fn, options): inserts a new rule at the end of the rule list.
• at(ruleName, fn, options): replace the rule ruleName with a new rule.