";

		// Split into an array with one line of code per row
		$code = explode("\n", $mjml->mjml);
		// Array containing our formatted lines
		$lines = [];
		// We track the depth for indentation
		$depth = 0;
		foreach($code as $key => $c) {
			$line = "";
			$num = $key + 1;

			// Check if there is any error for this line
			$errors = [];
			if(!empty($mjml->errors)) {
				$debug = true;
				$errors = array_filter($mjml->errors, function($item) use($num) {
					return $item->line === $num;
				});
			}

			// Wrap the line with an error message
			if(!empty($errors)) {
				$line .= "message . "\n";
					return $carry;
				}));
				$line .= "\">";
			}

			$line .= "$num";

			// Indentation
			preg_match_all("/<(?!\/|\!)(?!area|base|br|col|embed|hr|img|input|link|meta|param|source|track|wbr)[^<]+?(?/", $c, $openingTags);
			preg_match_all("/<\/.+?>/", $c, $closingTags);
			if(count($openingTags[0]) < count($closingTags[0])) {
				$depth--;
			}
			for($i = 0; $i < $depth; $i++) {
				$line .= "\t";
			}
			if(count($openingTags[0]) > count($closingTags[0])) {
				$depth++;
			}

			$line .= htmlentities($c);

			if(!empty($errors)) {
				$line .= "";
			}

			$lines[] = $line;
		}

		// Add the formatted lines in the debug view
		$view .= implode("\n", $lines);
		$view .= "