jenkinsci/git-plugin — pull request #69 by memory (2012-05-21 20:27:53+00:00)
Title: use 'git whatchanged' instead of 'git show'

This forces file-by-file evaluation necessary for included/excluded
regions to be applied correctly to merge commits.

See: https://issues.jenkins-ci.org/browse/JENKINS-13580, which we
believe is resolved here.