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def parse(tokens):
# pyparsing 3.0.9 -> ['a_*_a']
# pyparsing 3.1.0 -> ['']
print(tokens)
wrapper = "a" + SkipTo("a") + "a"
expr = "*" + SkipTo("*", ignore=wrapper).set_parse_action(parse) + "*"
# pyparsing 3.0.9 -> ['*', 'a_*_a', '*']
# pyparsing 3.1.0 -> ['*', '', '*']
print(expr.parse_string("*a_*_a*"))The code example works correctly on pyparsing 3.0.9. But since 3.1.0 it's no longer possible to get access to the ignored expression and parse it differently.
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