Twig uses htmlspecialchars internally for escaping. How do I pass ENT_NOQUOTES?

Question

I'm using Twig for an embedded application that renders a basic subset of HTML. However, it does not support " for double quotes, and simply shows quot; instead of ".

I want to achieve the equivalent of

htmlspecialchars($input_string, ENT_NOQUOTES);

Twig's documentation says that it uses htmlspecialchars internally for its escaping. How do I set this flag when escaping a particular string?

Answer 1

Use a custom escaping strategy.

Create a new escaping strategy called html_no_quotes as follows:

$twig
    ->getExtension(\Twig\Extension\CoreExtension::class)
    ->setEscaper('html_no_quotes', function($twig_environment, $string, $charset) {
        return htmlspecialchars($string, ENT_NOQUOTES);
    })
;

Then inside your template use your html_no_quotes escaping strategy as follows:

{{ someString | escape('html_no_quotes') }}