Allow local variables named define to be called

- Calling a nested local variable named `define` no longer triggers the `A
  module must not have more than one anonymous 'define' calls.` as long
  as there are no arguments.

lib/parse.js

@@ -80,6 +80,7 @@
             method: "define",
             moduleName: moduleName,
             deps: deps != null ? deps : [],
+            argumentsLength: node["arguments"].length,
             node: node
           });
           isInsideDefine = true;

lib/util.js

@@ -14,9 +14,9 @@
     depPrefix = prefix.replace("├", "|").replace("└", " ").replace(/─/g, " ");
     return currentModule.deps.forEach(function(depModule, i) {
       if (i + 1 < currentModule.deps.length) {
-        return printTree(depModule, "" + depPrefix + " ├──");
+        return printTree(depModule, depPrefix + " ├──");
       } else {
-        return printTree(depModule, "" + depPrefix + " └──");
+        return printTree(depModule, depPrefix + " └──");
       }
     });
   };

src/parse.coffee

@@ -71,6 +71,7 @@ module.exports = parseRequireDefinitions = (config, file, callback) ->
         method : "define"
         moduleName : moduleName
         deps : deps ? []
+        argumentsLength: node.arguments.length
         node : node
       )
 

src/trace.coffee

@@ -148,7 +148,7 @@ module.exports = traceModule = (startModuleName, config, allModules = [], fileLo
 
       (file, definitions, callback) ->
 
-        if _.filter(definitions, (def) -> return def.method == "define" and def.moduleName == undefined).length > 1
+        if _.filter(definitions, (def) -> return def.method == "define" and def.moduleName == undefined and def.argumentsLength > 0).length > 1
           callback(new Error("A module must not have more than one anonymous 'define' calls."))
           return
 

test/fixtures/errors/multiple_anonymous_defines.js

@@ -0,0 +1,6 @@
+(function () {
+  define(function (test) {
+    define(function () {
+    });
+  });
+})();

test/index_test.coffee

@@ -669,6 +669,16 @@ describe "errors", ->
     )
 
 
+  it "should throw an error on multiple anonymous define calls", (done) ->
+
+    amdOptimize.src(
+      "multiple_anonymous_defines"
+      baseUrl : "test/fixtures/errors"
+    ).on("error", (err) ->
+      assert.ok(util.isError(err))
+      done()
+    )
+
   it "should work with circular dependencies when exports is used"
   # , (done) ->
   #   # http://requirejs.org/docs/api.html#circular