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Created November 17, 2012 17:41
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splitting on | with escaped \|'s and escaped \\'s
def split_bars(v):
i = iter(v.split('|'))
while True:
part = next(i)
while part.endswith('\\'):
part = part[:-1] + '|' + next(i)
yield part.replace('\\\\', '\\')
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