Gui: Add function to search custom commands

src/Gui/CommandPy.xml

@@ -117,5 +117,15 @@ Returns True if something was removed, or False if not.
         </UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="findCustomCommand" Static='true'>
+      <Documentation>
+        <UserDocu>Find the name of a custom command, given a macro name
+findCustomCommand(name) -> Optional[str]
+--
+Given the name of a macro, return the name of the custom command for that macro, or
+None if there is no command matching that macro script name.
+        </UserDocu>
+      </Documentation>
+    </Methode>
   </PythonExport>
 </GenerateModel>

src/Gui/CommandPyImp.cpp

@@ -384,6 +384,31 @@ PyObject* CommandPy::removeCustomCommand(PyObject* args)
     }
 }
 
+PyObject* CommandPy::findCustomCommand(PyObject* args)
+{
+    const char* macroScriptName = nullptr;
+    if (!PyArg_ParseTuple(args, "s", &macroScriptName))
+        return nullptr;
+
+    CommandManager& commandManager = Application::Instance->commandManager();
+    std::vector<Command*> macros = commandManager.getGroupCommands("Macros");
+
+    auto action = std::find_if(macros.begin(), macros.end(), [macroScriptName](const Command* c) {
+        if (auto mc = dynamic_cast<const MacroCommand*>(c))
+            if (std::string(mc->getScriptName()) == std::string(macroScriptName))
+                return true;
+        return false;
+        });
+
+    if (action != macros.end()) {
+        return PyUnicode_FromString((*action)->getName());
+    }
+    else {
+        Py_INCREF(Py_None);
+        return Py_None;
+    }
+}
+
 PyObject *CommandPy::getCustomAttributes(const char* /*attr*/) const
 {
     return 0;