Block parameters break dumping the context fix #567

Author: jknack

handlebars/src/main/java/com/github/jknack/handlebars/Context.java

@@ -84,7 +84,7 @@ public Object get(final List<PathExpression> path) {
         return parent.model;
       }
       // path variable should resolve from parent :S
-      if (key.startsWith(".")) {
+      if (key.startsWith(".") && path.size() > 1) {
         return parent.get(path.subList(1, path.size()));
       }
       return super.get(path);

handlebars/src/test/java/com/github/jknack/handlebars/issues/Issue567.java

@@ -0,0 +1,17 @@
+package com.github.jknack.handlebars.issues;
+
+import com.github.jknack.handlebars.v4Test;
+import org.junit.Test;
+
+import java.util.Arrays;
+
+public class Issue567 extends v4Test {
+
+  @Test
+  public void shouldKeepContextOnBlockParameter() throws Exception {
+    shouldCompileTo("{{#each foo as |v k|}}"
+            + "  context is {{{.}}}"
+            + "{{/each}}",
+        $("hash", $("foo", Arrays.asList("a", "b", "c"))), "  context is {v=a, k=0}  context is {v=b, k=1}  context is {v=c, k=2}");
+  }
+}