Add a new post check ('match' keyword) which check the value(s) match the given regular expression. Create a 'print_error' method for printing usage and an error message when post checks don't pass.
Add a new post check ('match' keyword) which check the value(s) match the given
regular expression.
Create a 'print_error' method for printing usage and an error message when post
checks don't pass.

fmenabe/python-clg