python/testData/regexp/lookbehind.py

import re

re.compile(r"(?<!a|b)");
re.compile(r"(?<!<error descr="Alternation alternatives needs to have the same length inside lookbehind">a|bc</error>)");
re.compile(r"(?<!a{3}})");
re.compile(r"(?<!a<weak_warning descr="Fixed repetition range">{3,3}</weak_warning>})");
re.compile(r"(?<!a<error descr="Unequal min and max in counted quantifier not allowed inside lookbehind">{3,4}</error>})");