[Locale] as of ICU 4.8+, slash ("/") and dash ("-") are interchangeable, you can use any of them in a date/time pattern

eriksencosta · eriksencosta · commit 0d442c765345 · 2012-08-07T12:17:01.000-03:00
diff --git a/src/Symfony/Component/Locale/Stub/DateFormat/FullTransformer.php b/src/Symfony/Component/Locale/Stub/DateFormat/FullTransformer.php
@@ -175,11 +175,11 @@ public function getReverseMatchingRegExp($pattern)
     {
         $that = $this;
 
-        // $escapedPattern = preg_quote($pattern, '/');
+        $escapedPattern = preg_quote($pattern, '/');
 
-        // ICU 4.8 recognizes slash ("/") in a value to be parsed as a dash ("-") when parsing a value that
-        // TODO: how to escape the regex metachars and still recognize "/" as "-" and vice-versa?
-        $escapedPattern = preg_replace('/\-|\//', '[\/\-]', $pattern);
+        // ICU 4.8 recognizes slash ("/") in a value to be parsed as a dash ("-") and vice-versa
+        // when parsing a date/time value
+        $escapedPattern = preg_replace('/\\\[\-|\/]/', '[\/\-]', $escapedPattern);
 
         $reverseMatchingRegExp = preg_replace_callback($this->regExp, function($matches) use ($that) {
             $length = strlen($matches[0]);
