Expose getUserMacroDir to python and use in preferences.

src/App/Application.h

@@ -306,6 +306,7 @@ class AppExport Application
     static PyObject* sGetExportType     (PyObject *self,PyObject *args,PyObject *kwd);
     static PyObject* sGetResourceDir    (PyObject *self,PyObject *args,PyObject *kwd);
     static PyObject* sGetUserAppDataDir (PyObject *self,PyObject *args,PyObject *kwd);
+    static PyObject* sGetUserMacroDir   (PyObject *self,PyObject *args,PyObject *kwd);
     static PyObject* sGetHomePath       (PyObject *self,PyObject *args,PyObject *kwd);
 
     static PyObject* sLoadFile          (PyObject *self,PyObject *args,PyObject *kwd);

src/App/ApplicationPy.cpp

@@ -85,6 +85,8 @@ PyMethodDef Application::Methods[] = {
      "Get the root directory of all resources"},
     {"getUserAppDataDir", (PyCFunction) Application::sGetUserAppDataDir  ,1,
      "Get the root directory of user settings"},
+    {"getUserMacroDir", (PyCFunction) Application::sGetUserMacroDir  ,1,
+     "Get the directory of the user's macro directory"},
     {"getHomePath",    (PyCFunction) Application::sGetHomePath  ,1,
      "Get the home path, i.e. the parent directory of the executable"},
 
@@ -582,6 +584,15 @@ PyObject* Application::sGetUserAppDataDir(PyObject * /*self*/, PyObject *args,Py
     return Py::new_reference_to(user_data_dir);
 }
 
+PyObject* Application::sGetUserMacroDir(PyObject * /*self*/, PyObject *args,PyObject * /*kwd*/)
+{
+    if (!PyArg_ParseTuple(args, ""))     // convert args: Python->C
+        return NULL;                       // NULL triggers exception
+
+    Py::String user_macro_dir(Application::getUserMacroDir(),"utf-8");
+    return Py::new_reference_to(user_macro_dir);
+}
+
 PyObject* Application::sGetHomePath(PyObject * /*self*/, PyObject *args,PyObject * /*kwd*/)
 {
     if (!PyArg_ParseTuple(args, ""))     // convert args: Python->C

src/Mod/Path/PathScripts/PathPreferences.py

@@ -112,7 +112,7 @@ def filePath(cls):
     @classmethod
     def macroFilePath(cls):
         grp = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Macro")
-        return grp.GetString("MacroPath", FreeCAD.getUserAppDataDir())
+        return grp.GetString("MacroPath", FreeCAD.getUserMacroDir())
 
     @classmethod
     def searchPaths(cls):