Make use of Common::prepareForOutput() method

Author: fredden

src/Standards/Squiz/Sniffs/Functions/FunctionDeclarationArgumentSpacingSniff.php

@@ -11,6 +11,7 @@
 
 use PHP_CodeSniffer\Files\File;
 use PHP_CodeSniffer\Sniffs\Sniff;
+use PHP_CodeSniffer\Util\Common;
 use PHP_CodeSniffer\Util\Tokens;
 
 class FunctionDeclarationArgumentSpacingSniff implements Sniff
@@ -246,11 +247,12 @@ public function processBracket($phpcsFile, $openBracket)
                     $data  = [
                         $param['name'],
                     ];
-                    $found = str_replace(["\r", "\n", "\t"], ['\r', '\n', '\t'], $gap);
-                    if ($found === $gap) {
+                    if (trim($gap, ' ') === '') {
+                        // Gap contains only space characters: report the number of spaces.
                         $data[] = strlen($gap);
                     } else {
-                        $data[] = '"'.$found.'"';
+                        // Gap contains more than just spaces: render these for better clarity.
+                        $data[] = '"'.Common::prepareForOutput($gap).'"';
                     }
 
                     $fix = $phpcsFile->addFixableError($error, $typeHintToken, 'SpacingAfterHint', $data);