WP_HTML_Tag_Processor::after_tag()

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}

$has_value = '=' === $this->html[ $this->bytes_already_parsed ];
if ( $has_value ) {
	++$this->bytes_already_parsed;
	$this->skip_whitespace();
	if ( $this->bytes_already_parsed >= $doc_length ) {
		$this->parser_state = self::STATE_INCOMPLETE_INPUT;

		return false;
	}

	switch ( $this->html[ $this->bytes_already_parsed ] ) {
		case "'":
		case '"':
			$quote                      = $this->html[ $this->bytes_already_parsed ];
			$value_start                = $this->bytes_already_parsed + 1;
			$end_quote_at               = strpos( $this->html, $quote, $value_start );
			$end_quote_at               = false === $end_quote_at ? $doc_length : $end_quote_at;
			$value_length               = $end_quote_at - $value_start;
			$attribute_end              = $end_quote_at + 1;
			$this->bytes_already_parsed = $attribute_end;
			break;

		default:
			$value_start                = $this->bytes_already_parsed;
			$value_length               = strcspn( $this->html, "> \t\f\r\n", $value_start );
			$attribute_end              = $value_start + $value_length;
			$this->bytes_already_parsed = $attribute_end;
	}
} else {
	$value_start   = $this->bytes_already_parsed;
	$value_length  = 0;
	$attribute_end = $attribute_start + $name_length;
}

if ( $attribute_end >= $doc_length ) {
	$this->parser_state = self::STATE_INCOMPLETE_INPUT;

	return false;
}

if ( $this->is_closing_tag ) {
	return true;
}

/*
 * > There must never be two or more attributes on
 * > the same start tag whose names are an ASCII
 * > case-insensitive match for each other.
 *     - HTML 5 spec
 *

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