comparison mercurial/utils/procutil.py @ 38455:0b63a6743010 stable 4.6.2

procutil: use unbuffered stdout on Windows

Windows doesn't support line buffering, treating it as fully buffered. This
causes output of slow commands to stutter. We use unbuffered instead.

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    except AttributeError:
        return False

# glibc determines buffering on first write to stdout - if we replace a TTY
# destined stdout with a pipe destined stdout (e.g. pager), we want line
# buffering
if isatty(stdout):
    stdout = os.fdopen(stdout.fileno(), r'wb', 1)

if pycompat.iswindows:
    from .. import windows as platform
    stdout = platform.winstdout(stdout)
else:

38455:0b63a6743010

    except AttributeError:
        return False

# glibc determines buffering on first write to stdout - if we replace a TTY
# destined stdout with a pipe destined stdout (e.g. pager), we want line
# buffering (or unbuffered, on Windows)
if isatty(stdout):
    if pycompat.iswindows:
        # Windows doesn't support line buffering
        stdout = os.fdopen(stdout.fileno(), r'wb', 0)
    else:
        stdout = os.fdopen(stdout.fileno(), r'wb', 1)

if pycompat.iswindows:
    from .. import windows as platform
    stdout = platform.winstdout(stdout)
else: