tests: use raw strings for regular expressions with escapes

Authored by indygreg.

Description

tests: use raw strings for regular expressions with escapes

Avoids SyntaxWarning on Python 3.8.

Differential Revision: https://phab.mercurial-scm.org/D5828

Details

Committed
indygregMon, Feb 4, 12:37 PM
Differential Revision
D5828: tests: use raw strings for regular expressions with escapes
Parents
rHG8d4ee2d9ffb8: drawdag: use raw strings for docstrings
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