sage.combinat.e_one_star uses MS-DOS style line breaks #12384
Description
The carriage returns are causing problems with the new doctest framework.
Depends on #9958
Component: combinatorics
Author: David Roe
Reviewer: David Loeffler
Merged: sage-5.0.beta9
Issue created by migration from https://trac.sagemath.org/ticket/12384