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@ -330,7 +330,7 @@ def main(args=sys.argv):
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' Directories are scanned recursively for image files.')
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args, items = parse_args(args[1:], options_spec, 'image-file ...', msg, '{} icat'.format(appname))
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signal.signal(signal.SIGWINCH, lambda *a: setattr(screen_size, 'changed', True))
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signal.signal(signal.SIGWINCH, lambda signum, frame: setattr(screen_size, 'changed', True))
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if not sys.stdout.isatty() or not sys.stdin.isatty():
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raise SystemExit(
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'Must be run in a terminal, stdout and/or stdin is currently not a terminal'
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