Fix (and no longer be symlink safe again )-;)

common/src/main/java/io/github/skippyall/ruler/FileUtils.java

@@ -1,6 +1,7 @@
 package io.github.skippyall.ruler;
 
 import java.io.IOException;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.stream.Stream;
@@ -12,10 +13,12 @@ public class FileUtils {
 
     public static String removeExtension(String path) {
         if(path.contains(".")) {
-            return path.substring(0, path.lastIndexOf('.'));
-        } else {
-            return path;
+            int index = path.lastIndexOf('.');
+            if(index > path.lastIndexOf(FileSystems.getDefault().getSeparator())) {
+                return path.substring(0, index);
+            }
         }
+        return path;
     }
 
     public static String getExtension(Path path) {

common/src/main/java/io/github/skippyall/ruler/config/ConfigLoader.java

@@ -25,7 +25,7 @@ public class ConfigLoader {
         }
         RuleConfig config = null;
         Path configPath = FileUtils.append(fileWithoutExtension, ".config.json");
-        String rulePath = RuleUtils.getRulePathFromWithoutExtension(fileWithoutExtension.toString());
+        String rulePath = RuleUtils.getRulePath(fileWithoutExtension);
         if(Files.isRegularFile(configPath)) {
             try {
                 config = RuleConfig.loadFromJson(JsonParser.parseReader(Files.newBufferedReader(configPath)), rulePath);

common/src/main/java/io/github/skippyall/ruler/rule/RuleUtils.java

@@ -35,7 +35,8 @@ public class RuleUtils {
     }
 
     public static boolean isValidRulePath(String path) {
-        return path.matches("([A-Za-z0-9\\-_.]+)") &&
+        return path.isEmpty() ||
+                path.matches("([A-Za-z0-9\\-_.]+)") &&
                 Arrays.stream(path.split("\\.")).noneMatch(String::isEmpty);
     }
 
@@ -46,11 +47,7 @@ public class RuleUtils {
     }
 
     public static boolean isInDirectory(Path path) {
-        try {
-            return path.toRealPath().startsWith(getRoot());
-        } catch (IOException e) {
-            return false;
-        }
+        return path.toAbsolutePath().startsWith(getRoot());
     }
 
     public static void checkDirectory(Path path) throws InvalidRulePathException {