[commands] reset view when Optional argument encounters parsing error

2021-08-19 16:56:28 -07:00 · 2021-08-19 16:56:28 -07:00 · 1d2eaf8526
commit 1d2eaf8526
parent f3cb197429
1 changed files with 8 additions and 1 deletions
--- a/discord/ext/commands/core.py
+++ b/discord/ext/commands/core.py
@ -564,7 +564,14 @@ class Command(_BaseCommand, Generic[CogT, P, T]):
        if consume_rest_is_special:
            argument = view.read_rest().strip()
        else:
-            argument = view.get_quoted_word()
+            try:
+                argument = view.get_quoted_word()
+            except ArgumentParsingError as exc:
+                if self._is_typing_optional(param.annotation):
+                    view.index = previous
+                    return None
+                else:
+                    raise exc
        view.previous = previous

        # type-checker fails to narrow argument