Added first version of console autocompletion

src/core/sheerka/services/SheerkaExecute.py

@@ -306,9 +306,17 @@ class SheerkaExecute(BaseService):
 
                                         result = evaluator.eval(sub_context, item)
                                         if result is None:
+                                            # match() was successful but nothing was done in eval
+                                            # most of the time, it's because checks made in eval were unsuccessful
                                             debug_result.append({"input": item, "return_value": None})
                                             continue
 
+                                        if id(result) == id(item):
+                                            # eval was successful, but we don't want to alter the processing flow
+                                            debug_result.append({"input": item, "return_value": item})
+                                            continue
+
+                                        # otherwise, item will be removed and replaced by result
                                         to_delete.append(item)
                                         if isinstance(result, list):
                                             evaluated_items.extend(result)
@@ -319,6 +327,8 @@ class SheerkaExecute(BaseService):
                                                                      evaluator=evaluator)
                                             result = self.sheerka.ret("sheerka.process", False, error, parents=[item])
                                             evaluated_items.append(result)
+
+                                        # TODO: Add a validation to make sure that item is somewhere in return_value.parents
                                         debug_result.append({"input": item, "return_value": result})
                                     else:
                                         debug_result.append({"input": item, "return_value": NO_MATCH})