is_site_url
Test if the given URL is a url for the current site.
If the current site handles requests for the hostname example.com, then all of the
following expressions will echo true:
{{ "https://example.com"|is_site_url }}
{{ "#foo"|is_site_url }}
{{ "/page/path"|is_site_url }}
{{ "//example.com"|is_site_url }}
The following will echo false:
{{ "https://foo.test"|is_site_url }}
{{ "example.com"|is_site_url }}
{{ "//foo.test"|is_site_url }}