comparison mercurial/util.py @ 30908:3a4c0905f357

util: always force line buffered stdout when stdout is a tty (BC)

pager replaced stdout with a line buffered version to work around glibc
deciding on a buffering strategy on the first write to stdout. This is going
to make my next patch hard, as replacing stdout will make tracking time
spent blocked on it more challenging.

Move the line buffering requirement to util.py, and remove it from pager.
This means that the abuse of ui.formatted=True and pager set to cat or equivalent
no longer results in a line-buffered output to a pipe, hence (BC), although
I don't expect anyone to be affected

30907:1791be8a95c5

urlerr = pycompat.urlerr
urlparse = pycompat.urlparse
urlreq = pycompat.urlreq
xmlrpclib = pycompat.xmlrpclib

if pycompat.osname == 'nt':
    from . import windows as platform
    stdout = platform.winstdout(pycompat.stdout)
else:
    from . import posix as platform

_ = i18n._

    '''remove all authentication information from a url string'''
    u = url(u)
    u.user = u.passwd = None
    return str(u)

def isatty(fp):
    try:
        return fp.isatty()
    except AttributeError:
        return False

timecount = unitcountfn(
    (1, 1e3, _('%.0f s')),
    (100, 1, _('%.1f s')),
    (10, 1, _('%.2f s')),
    (1, 1, _('%.3f s')),

30908:3a4c0905f357

urlerr = pycompat.urlerr
urlparse = pycompat.urlparse
urlreq = pycompat.urlreq
xmlrpclib = pycompat.xmlrpclib

def isatty(fp):
    try:
        return fp.isatty()
    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(), 'wb', 1)

if pycompat.osname == 'nt':
    from . import windows as platform
    stdout = platform.winstdout(stdout)
else:
    from . import posix as platform

_ = i18n._

    '''remove all authentication information from a url string'''
    u = url(u)
    u.user = u.passwd = None
    return str(u)

timecount = unitcountfn(
    (1, 1e3, _('%.0f s')),
    (100, 1, _('%.1f s')),
    (10, 1, _('%.2f s')),
    (1, 1, _('%.3f s')),