currently, the way to get a regex string for a given gitignore-style glob is:

>>> pathspec.GitIgnorePattern('/dist/').regex.pattern
'^dist/.*$'

which incurs the glob->regex translation inside GitIgnorePattern.__init__ which in turn calls RegexPattern.__init__ which automatically compiles the regex.

for the simple case of just wanting to convert a glob into a non-compiled regex string, it'd be great to have a utility function/method that could both be used inside GitIgnorePattern.__init__ and outside as part of the public API.