comparison mercurial/color.py @ 41532:bd3f03d8cc9f

global: use raw strings for regular expressions with escapes

Escape sequences like \w, \s, and \d are technically invalid
in str/bytes. This became a deprecation warning in Python 3.6
(https://bugs.python.org/issue27364). Python 3.8 bumps it to
a SyntaxWarning (https://bugs.python.org/issue32912), which is
non-silent by default.

This commit changes a number of regular expressions to use
br'' so regular expression special sequences don't need \\
literals. This fixes roughly half of the SyntaxWarning we
see in the code base with Python 3.8.

Differential Revision: https://phab.mercurial-scm.org/D5815

41531:14983ac4a764

            # stdout may not support GetConsoleScreenBufferInfo()
            # when called from subprocess or redirected
            w32effects = None
        else:
            origattr = csbi.wAttributes
            ansire = re.compile(b'\033\[([^m]*)m([^\033]*)(.*)',
                                re.MULTILINE | re.DOTALL)

    def win32print(ui, writefunc, text, **opts):
        label = opts.get(r'label', '')
        attr = origattr

41532:bd3f03d8cc9f

            # stdout may not support GetConsoleScreenBufferInfo()
            # when called from subprocess or redirected
            w32effects = None
        else:
            origattr = csbi.wAttributes
            ansire = re.compile(br'\033\[([^m]*)m([^\033]*)(.*)',
                                re.MULTILINE | re.DOTALL)

    def win32print(ui, writefunc, text, **opts):
        label = opts.get(r'label', '')
        attr = origattr