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mercurial/utils/procutil.py
changeset 39840 a9f56e4501c1
parent 39836 f1d6021453c2
parent 39807 e5724be689b3
child 40497 3fbfbc8c9f82 
--- a/mercurial/utils/procutil.py	Tue Sep 25 08:53:20 2018 -0700
+++ b/mercurial/utils/procutil.py	Wed Sep 26 08:46:56 2018 -0700
@@ -278,13 +278,13 @@
     """
     uout.flush()
     fin, fout = uin, uout
-    if uin is stdin:
+    if _testfileno(uin, stdin):
         newfd = os.dup(uin.fileno())
         nullfd = os.open(os.devnull, os.O_RDONLY)
         os.dup2(nullfd, uin.fileno())
         os.close(nullfd)
         fin = os.fdopen(newfd, r'rb')
-    if uout is stdout:
+    if _testfileno(uout, stdout):
         newfd = os.dup(uout.fileno())
         os.dup2(stderr.fileno(), uout.fileno())
         fout = os.fdopen(newfd, r'wb')
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