[compat] Do not compare None <= 0

The result is meaningless (and it emits a warning in cpython2 when called with -3), so handle None before making integer comparisons.
This commit is contained in:
Philipp Hagemeister 2015-10-06 14:28:14 +02:00
parent c4af7684d8
commit 4810c48d6d

View File

@ -417,18 +417,18 @@ def _compat_add_option(self, *args, **kwargs):
_terminal_size = collections.namedtuple('terminal_size', ['columns', 'lines'])
def compat_get_terminal_size(fallback=(80, 24)):
columns = compat_getenv('COLUMNS', None)
columns = compat_getenv('COLUMNS')
if columns:
columns = int(columns)
else:
columns = None
lines = compat_getenv('LINES', None)
lines = compat_getenv('LINES')
if lines:
lines = int(lines)
else:
lines = None
if columns <= 0 or lines <= 0:
if columns is None or lines is None or columns <= 0 or lines <= 0:
try:
sp = subprocess.Popen(
['stty', 'size'],
@ -438,9 +438,9 @@ def compat_get_terminal_size(fallback=(80, 24)):
except Exception:
_columns, _lines = _terminal_size(*fallback)
if columns <= 0:
if columns is None or columns <= 0:
columns = _columns
if lines <= 0:
if lines is None or lines <= 0:
lines = _lines
return _terminal_size(columns, lines)