This library adds support of superscript and subscript (<sup> and <sub> HTML tags) to league/commonmark.

• 2.x is compatible with league/commonmark 1.x (recommended version)
• 1.x is compatible with league/commonmark 0.17.x and 0.18.x and will no longer be supported

This project can be installed via [Composer]:

$ composer require ows/commonmark-sup-sub-extensions

use League\CommonMark\Environment; use Ows\CommonMark\SupExtension; use Ows\CommonMark\SubExtension; $environment = Environment::createCommonMarkEnvironment(); $environment->addExtension(new SupExtension()); $environment->addExtension(new SubExtension());

See CommonMark customization.

Code:

10^2^ 10~2~

Result:

10<sup>2</sup> 10<sub>2</sub>