libgit2/libgit2 — pull request #1020 by wking (2012-10-25 19:35:30+00:00)
Title: config: iterate through config files in git_config_set_multivar()

I duplicated the logic from config_get(). The change will be made to
the config file in which the variable you're replacing was originally
defined.

It's possible that other multivar functions need to be extended to support config-file looping, but I didn't check.