From c3b40e41c6c6a686f082c2771eb57edd071ff13d Mon Sep 17 00:00:00 2001
From: a <1@1.1>
Date: Wed, 7 Aug 2024 10:39:41 +0200
Subject: [PATCH] fix

---
 xonsh/procs/pipelines.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xonsh/procs/pipelines.py b/xonsh/procs/pipelines.py
index ab9736b0d..eec6c6c9e 100644
--- a/xonsh/procs/pipelines.py
+++ b/xonsh/procs/pipelines.py
@@ -278,7 +278,7 @@ class CommandPipeline:
                     lines = b.splitlines(keepends=True)
                     yield from lines
                     self.end(tee_output=False)
-                elif self.captured == "stdout":
+                elif self.captured == "stdout" and stdout is not None:
                     b = stdout.read()
                     s = self._decode_uninew(b, universal_newlines=True)
                     self.lines = s.splitlines(keepends=True)