new_contents: import argparse
  import pprint
  import unittest
  import re
  import verilogutil_test
  
  
  # import sys
  # sys.argv.append("-n=comment")
  parser = argparse.ArgumentParser()
  parser.add_argument("pattern", help="run tests by name, can be regex")
  args = parser.parse_args()
  
  
  all_test_classes = (verilogutil_test.Tests,)
  suite = unittest.TestSuite()
  for cl in all_test_classes:
      filtered_tests = [cl(i) for i in dir(cl()) if i.startswith("test_") and re.search(args.pattern, i)]
      suite.addTests(filtered_tests)
  unittest.TextTestRunner(verbosity=3).run(suite)
  
  
  
  
subject: add cmd test handler: check wiki