1 files changed, 12 insertions, 0 deletions
diff --git a/lib/scope.js b/lib/scope.js
index 9c2f8530..0f9969d2 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -165,6 +165,7 @@ AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
         unreferenced     : true,
         assign_to_global : true,
         func_arguments   : true,
+        nested_defuns    : true,
         eval             : true
     });
     var tw = new TreeWalker(function(node){
@@ -225,6 +226,17 @@ AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
                 col: node.start.col
             });
         }
+        if (options.nested_defuns
+            && node instanceof AST_Defun
+            && !(tw.parent() instanceof AST_Scope
+                 || (tw.parent() instanceof AST_BlockStatement
+                     && tw.parent(1) instanceof AST_Scope))) {
+            AST_Node.warn("Function {name} declared in nested statement [{line},{col}]", {
+                name: node.name.name,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
     });
     this.walk(tw);
 });