Twig: Use "Ignore Missing" on Include by default

Question

With Twig I am using {% include %} a lot. I need to attach ignore missing to every include, since I do not want to run into an Exception when a file is not found. This bloats the template code a lot and I am looking for an option to attach ignore default to all includes by default without repeating it with every include call. I am looking for an equivalent of php's include in Twig since Twig's own include behaves like php's require.

How can I include templates in Twig without having Exceptions thrown when a file is not found and without adding ignore missing to every single include?
I was looking for a config in Twig but did not find an option.

Answer 1

by over-riding built-in include

     class TokenParser_Include extends Twig_TokenParser
        {
            public function parse(Twig_Token $token)
            {
                $expr = $this->parser->getExpressionParser()->parseExpression();

                list($variables, $only, $ignoreMissing) = $this->parseArguments();

                return new Twig_Node_Include($expr, $variables, $only, $ignoreMissing = true, $token->getLine(), $this->getTag());
            }

            protected function parseArguments()
            {
                $stream = $this->parser->getStream();

                $ignoreMissing = false;
                if ($stream->nextIf(Twig_Token::NAME_TYPE, 'ignore')) {
                    $stream->expect(Twig_Token::NAME_TYPE, 'missing');

                    $ignoreMissing = true;
                }

                $variables = null;
                if ($stream->nextIf(Twig_Token::NAME_TYPE, 'with')) {
                    $variables = $this->parser->getExpressionParser()->parseExpression();
                }

                $only = false;
                if ($stream->nextIf(Twig_Token::NAME_TYPE, 'only')) {
                    $only = true;
                }

                $stream->expect(Twig_Token::BLOCK_END_TYPE);

                return array($variables, $only, $ignoreMissing);
            }

            public function getTag()
            {
                return 'include';
            }
        }

   $twig->addTokenParser(new TokenParser_Include());