diff --git a/mercurial/hook.py b/mercurial/hook.py index 188936b334b1f16325da857895982a147b8a7a2c_bWVyY3VyaWFsL2hvb2sucHk=..e5b2ee5157ae86503901eb7abae42a1ebb002c00_bWVyY3VyaWFsL2hvb2sucHk= 100644 --- a/mercurial/hook.py +++ b/mercurial/hook.py @@ -134,12 +134,16 @@ oldstdout = -1 if _redirect: - stdoutno = sys.__stdout__.fileno() - stderrno = sys.__stderr__.fileno() - # temporarily redirect stdout to stderr, if possible - if stdoutno >= 0 and stderrno >= 0: - oldstdout = os.dup(stdoutno) - os.dup2(stderrno, stdoutno) + try: + stdoutno = sys.__stdout__.fileno() + stderrno = sys.__stderr__.fileno() + # temporarily redirect stdout to stderr, if possible + if stdoutno >= 0 and stderrno >= 0: + oldstdout = os.dup(stdoutno) + os.dup2(stderrno, stdoutno) + except AttributeError: + # __stdout/err__ doesn't have fileno(), it's not a real file + pass try: for hname, cmd in ui.configitems('hooks'):