Support isFoo for boolean properties.

This is addition to the existing getFoo support.

src/main/java/com/samskivert/mustache/DefaultCollector.java

@@ -81,9 +81,10 @@ public class DefaultCollector extends BasicCollector
         } catch (Exception e) {
             // fall through
         }
+
+        String upperName = Character.toUpperCase(name.charAt(0)) + name.substring(1);
         try {
-            m = clazz.getDeclaredMethod(
+            m = clazz.getDeclaredMethod("get" + upperName);
-                "get" + Character.toUpperCase(name.charAt(0)) + name.substring(1));
             if (!m.getReturnType().equals(void.class)) {
                 if (!m.isAccessible()) {
                     m.setAccessible(true);
@@ -94,6 +95,19 @@ public class DefaultCollector extends BasicCollector
             // fall through
         }
 
+        try {
+            m = clazz.getDeclaredMethod("is" + upperName);
+            if (m.getReturnType().equals(boolean.class) ||
+                m.getReturnType().equals(Boolean.class)) {
+                if (!m.isAccessible()) {
+                    m.setAccessible(true);
+                }
+                return m;
+            }
+        } catch (Exception e) {
+            // fall through
+        }
+
         Class<?> sclass = clazz.getSuperclass();
         if (sclass != Object.class && sclass != null) {
             return getMethod(clazz.getSuperclass(), name);

src/test/java/com/samskivert/mustache/MustacheTest.java

@@ -47,6 +47,18 @@ public class MustacheTest
         });
     }
 
+    @Test public void testBooleanPropertyVariable () {
+        test("true", "{{foo}}", new Object() {
+            Boolean isFoo () { return true; }
+        });
+    }
+
+    @Test public void testPrimitiveBooleanPropertyVariable () {
+        test("false", "{{foo}}", new Object() {
+            boolean isFoo () { return false; }
+        });
+    }
+
     @Test public void testSkipVoidReturn () {
         test("bar", "{{foo}}", new Object() {
             void foo () {}