Commit 58d33126d44eeff69e375e500d1e77e03e2665a0

Edward Thomson 2015-12-26T19:47:17

merge driver: tests for set and unset merge attribute Ensure that setting the merge attribute forces the built-in default `text` driver and does *not* honor the `merge.default` configuration option. Further ensure that unsetting the merge attribute forces a conflict (the `binary` driver).