evolve: Fix crush when reading docstring Before this patch, hg evolve --divergent could crush when looking for docstring of function of merge.update. We were checking the docstring to work properly with older version of Mercurial. It could crush if an extension would wrap merge.update without keeping the docstring. This patch fixes the crush.

doc generated with sphinx. tutorial exported using sphinxedhg

http://hg.piranha.org.ua/sphinxedhg/