small things

src/main/java/carpet/script/Expression.java

@@ -1346,14 +1346,13 @@ public class Expression
         {
             String operator = pair.getKey();
             String function = pair.getValue();
-            if ((symbol.equals(operator) || symbol.equals(function)) && node.args.size() > 0)
+            if ((symbol.equals(operator) || symbol.equals(function)) && !node.args.isEmpty())
             {
                 boolean leftOptimizable = operators.get(operator).isLeftAssoc();
                 ExpressionNode optimizedChild = node.args.get(leftOptimizable ? 0 : (node.args.size() - 1));
                 String type = optimizedChild.token.surface;
                 if ((type.equals(operator) || type.equals(function)) && (!(optimizedChild.op instanceof LazyValue.ContextFreeLazyValue)))
                 {
-                    optimized = true;
                     List<ExpressionNode> newargs = new ArrayList<>();
                     if (leftOptimizable)
                     {
@@ -1378,6 +1377,7 @@ public class Expression
                     }
                     node.token.morph(Token.TokenType.FUNCTION, function);
                     node.args = newargs;
+                    return true;
                 }
             }
         }

src/main/java/carpet/script/language/Operators.java

@@ -346,6 +346,7 @@ public class Operators
             return Value.TRUE;
         });
         expression.addFunctionalEquivalence("==", "equal");
+
         expression.addBinaryOperator("!=", precedence.get("equal==!="), false, (v1, v2) ->
                 v1.equals(v2) ? Value.FALSE : Value.TRUE);
         expression.addFunction("unique", lv -> {

src/main/java/carpet/script/value/LazyListValue.java

@@ -56,7 +56,7 @@ public abstract class LazyListValue extends AbstractListValue implements Iterato
             @Override
             public String getString()
             {
-                return String.format(Locale.ROOT, "[%s, %s, ..., %s)", NumericValue.of(start).getString(), NumericValue.of(start + stepp).getString(), NumericValue.of(limit).getString());
+                return String.format(Locale.ROOT, "<%s, %s, ..., %s)", NumericValue.of(start).getString(), NumericValue.of(start + stepp).getString(), NumericValue.of(limit).getString());
             }
         };
     }
@@ -104,7 +104,7 @@ public abstract class LazyListValue extends AbstractListValue implements Iterato
             @Override
             public String getString()
             {
-                return String.format(Locale.ROOT, "[%s, %s, ..., %s)", NumericValue.of(start).getString(), NumericValue.of(start + stepp).getString(), NumericValue.of(limit).getString());
+                return String.format(Locale.ROOT, "<%s, %s, ..., %s)", NumericValue.of(start).getString(), NumericValue.of(start + stepp).getString(), NumericValue.of(limit).getString());
             }
         };
     }