Returns the regexp for common whitespace characters.

Filter/validate a variable as a boolean.

Returns the URLs for CSS files used in an iframe-sandbox’d TinyMCE media view.

Filters the data for a file before it is uploaded to WordPress.

Filters whether to asynchronously update translation for core, a plugin, or a theme.

Filters the information attached to the newly created session.

Filters the authentication cookie.

Fires if a bad session token is encountered.

Filters response of WP_Customize_Control::active().

Fires before rendering a Customizer panel.