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