evolve: support successors of ancestor of orphan with multiple roots The previous code checked that the set of successors has a single root. However, there’s no reason to require that in general. Example: o 6 | o 5 |\ | o 4 | | o | 3 |/ | * 2 | | | x 1 |/ o 0 1 is obsoleted by 3, 4 and 6. We are considering the case when 2 gets evolved. The roots are [3, 4] and the heads are [6]. Before the change, the user was asked which destination to choose, but there was only one choice (6). After the change, 6 is chosen as the destination.

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import sys

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formatted_args = []

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UNSAFE_CHARACTERS = [" ", "!", "\"", "#", "$", "&", "'", "(", ")", "*", ",", ";", "<", ">", "?", "[", "\\", "]", "^", "`", "{", "|", "}", ":", "~", "/"]

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def find_unsafe(arg):

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    for unsafe in UNSAFE_CHARACTERS:

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        if unsafe in arg:

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            return True

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    return False

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for arg in sys.argv[1:]:

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    if find_unsafe(arg):

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        formatted_args.append('"%s"' % arg)

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    else:

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        formatted_args.append(arg)

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print("$ " + " ".join(formatted_args))