personalise functions that can returns list

src/rougail/annotator/fill.py

@@ -50,6 +50,8 @@ class Annotator(TargetAnnotator, ParamAnnotator):
         self.objectspace = objectspace
         self.functions = copy(functions)
         self.functions.extend(self.objectspace.rougailconfig['internal_functions'])
+        self.calc_multi = list(CALC_MULTI)
+        self.calc_multi.extend(self.objectspace.rougailconfig['multi_functions'])
         self.target_is_uniq = True
         self.only_variable = True
         self.allow_function = False
@@ -79,7 +81,7 @@ class Annotator(TargetAnnotator, ParamAnnotator):
                 value = self.objectspace.value(fill.xmlfiles)
                 value.type = 'calculation'
                 value.name = fill.name
-                if fill.name not in CALC_MULTI:
+                if fill.name not in self.calc_multi:
                     is_calc_multi = self.calc_is_multi(target.name)
                 else:
                     is_calc_multi = False

src/rougail/config.py

@@ -43,6 +43,7 @@ RougailConfig = {'dictionaries_dir': [join(ROUGAILROOT, 'dictionaries')],
                  'variable_namespace': 'rougail',
                  'auto_freeze_variable': 'server_deployed',
                  'internal_functions': [],
+                 'multi_functions': [],
                  'extra_annotators': [],
                  'modes_level': ['basic', 'normal', 'expert'],
                  'default_family_mode': 'basic',