def normalize_diff_filename(self, filename):
        if filename.startswith('/'):
            return filename[1:]
        else:
            return filename
Tests if can handle a long user agent
dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/diffviewer/parser.py/DiffParser.normalize_diff_filename--crossover with--dataset/ETHPy150Open kencochrane/django-defender/defender/tests.py/AccessAttemptTest.test_get_ip