Builds the Caption shortcode output.

Remove a new image size.

Determine if TinyMCE is available.

Ajax handler for getting themes from themes_api().

Ajax handler for updating a widget.

Saves a post submitted with XHR.

Returns useful keys to use to lookup data from an attachment’s stored metadata.

Retrieves an object containing information about the requested network.

Maybe attempts to generate attachment metadata, if missing.

Normalize a filesystem path.