jenkinsci/git-client-plugin — pull request #19 by gitmschepp (2013-08-06 20:27:46+00:00)
Title: [FEATURE] Introduced reception of GIT_MERGE_FLAG

This patch reads the the env. variable GIT_MERGE_FLAG
and passes its contained string to the git merge command
(null and "" being ignored)
A further patch to validate the flag is strongly recommended
for security reasons. I leave this to the project maintainers.