From 8a65d4f449124796c1a155c37e71409bbc2cb4ac Mon Sep 17 00:00:00 2001
From: Gil Forsyth <gil@forsyth.dev>
Date: Mon, 4 Nov 2024 16:02:06 -0500
Subject: [PATCH] fix(ArgparseCompleter): adjust parsing for upstream private
 changes

The upstream private API for `_parse_optional` changed, needed to update this.
---
 xonsh/cli_utils.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xonsh/cli_utils.py b/xonsh/cli_utils.py
index 2128f88e6..c881fdd63 100644
--- a/xonsh/cli_utils.py
+++ b/xonsh/cli_utils.py
@@ -543,6 +543,9 @@ class ArgparseCompleter:
             if not act_res:
                 # it is not a option string: pass
                 break
+            if isinstance(act_res, list):
+                assert len(act_res) == 1
+                act_res = act_res[0]
             # it is a valid option and advance
             self.remaining_args = self.remaining_args[1:]
             act, *_, value = act_res