If "branch" is provided to "diffusion.branchquery", use it as the "<pattern>" argument to "git branch --contains ..." master
Summary: Ref T13151. See PHI720. If you want to test if commit X appears on specific branch Y, `git branch --contains X -- Y` is faster than (effectively) `git branch --contains X | grep Y`. Since this call has a "branch" parameter anyway, use it as the pattern argument if provided. Test Plan: - Called the API method with no parameters, got all branches. - Called the API method with `master`, got just master. - Called the API method with `maste*`, got master. This behavior is not officially supported and may change in the future. - Viewed a commit, still saw all branches. - Grepped for `diffusion.branchquery` and verified that no remaining callsites pass a default "branch" parameter. Reviewers: amckinley Reviewed By: amckinley Maniphest Tasks: T13151 Differential Revision: https://secure.phabricator.com/D19499