FileNotFoundException is thrown when I use Japanese letters in java class name

Bugs
,
2

I copied maven-surefire-plugin code, and patched gradle. it worked well.

diff --git a/subprojects/base-services/src/main/java/org/gradle/internal/FileUtils.java b/subprojects/base-services/src/main/java/org/gradle/internal/FileUtils.java
index 1bb4cb7..570f477 100644
--- a/subprojects/base-services/src/main/java/org/gradle/internal/FileUtils.java
+++ b/subprojects/base-services/src/main/java/org/gradle/internal/FileUtils.java
@@ -27,27 +27,30 @@ import java.util.List;
 public class FileUtils {
     public static final int WINDOWS_PATH_LIMIT = 260;
 
+    private static String getOSSpecificIllegalChars()
+    {
+        if ( System.getProperty( "os.name" ).toLowerCase().startsWith( "win" ) )
+        {
+            return "\\/:*?\"<>|\0";
+        }
+        else
+        {
+            return "/\0";
+        }
+    }
+
     /**
      * Converts a string into a string that is safe to use as a file name. The result will only include ascii characters and numbers, and the "-","_", #, $ and "." characters.
      */
     public static String toSafeFileName(String name) {
-        int size = name.length();
-        StringBuffer rc = new StringBuffer(size * 2);
-        for (int i = 0; i < size; i++) {
-            char c = name.charAt(i);
-            boolean valid = c >= 'a' && c <= 'z';
-            valid = valid || (c >= 'A' && c <= 'Z');
-            valid = valid || (c >= '0' && c <= '9');
-            valid = valid || (c == '_') || (c == '-') || (c == '.') || (c == '$');
-            if (valid) {
-                rc.append(c);
-            } else {
-                // Encode the character using hex notation
-                rc.append('#');
-                rc.append(Integer.toHexString(c));
-            }
+        String result = name;
+        String illegalChars = getOSSpecificIllegalChars();
+        for ( int i = 0; i < illegalChars.length(); i++ )
+        {
+            result = result.replace( illegalChars.charAt( i ), '_' );
         }
-        return rc.toString();
+
+        return result;
     }
 
     public static File assertInWindowsPathLengthLimitation(File file) {