File: main.py

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python-shellescape 3.4.1-5
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#!/usr/bin/env python
# -*- coding: utf-8 -*-

import re


_find_unsafe = re.compile(r'[a-zA-Z0-9_^@%+=:,./-]').search


def quote(s):
    """Return a shell-escaped version of the string *s*."""
    if not s:
        return "''"

    if _find_unsafe(s) is None:
        return s

    # use single quotes, and put single quotes into double quotes
    # the string $'b is then quoted as '$'"'"'b'

    return "'" + s.replace("'", "'\"'\"'") + "'"