Made patternfns more readable: no visible change, except that the change is incompatible with Python 2.4.
Made patternfns more readable: no visible change, except that the change is incompatible with Python 2.4.

ioam/svn-history,ioam/svn-history,ioam/svn-history,ioam/svn-history,ioam/svn-history