localizable strings
:param callback: a function that is called for every file that message are
extracted from, just before the extraction itself is
- performed; the function is passed the filename and the
- options dictionary as positional arguments, in that order
+ performed; the function is passed the filename, the name
+ of the extraction method and and the options dictionary as
+ positional arguments, in that order
:return: an iterator over ``(filename, lineno, funcname, message)`` tuples
:rtype: ``iterator``
:see: `pathmatch`