Refactor whitespace check and add handling for multiple_targets

lm_eval/api/task.py

@@ -674,11 +674,12 @@ class ConfigurableTask(Task):
             check_choices = test_choice
         else:
             check_choices = [test_target]
-
+        # TODO: is this only for multiple-choice?
+        if self.config.doc_to_choice is not None:
             for choice in check_choices:
-            choice_has_whitespace = True if choice.startswith(" ") else False
+                choice_has_whitespace = True if choice[0].isspace() else False
                 delimiter_has_whitespace = (
-                True if self.config.target_delimiter.startswith(" ") else False
+                    True if self.config.target_delimiter[-1].isspace() else False
                 )
 
                 if delimiter_has_whitespace and choice_has_whitespace:
@@ -1067,6 +1068,9 @@ class ConfigurableTask(Task):
                 # it assumes that doc_to_target returns a number.
                 choices = self.doc_to_choice(doc)
                 gold = choices[gold]
+            # we expect multiple_targets to be a list.
+            elif self.multiple_target:
+                pass
             else:
                 gold = str(gold)