[PATCH v2 0/1] repo: add filtering options to "repo structure"

"git repo structure" provides a collection of useful information about the information stored in a repo. In particular, it's valuable for diagnosing performance issues caused by large objects stored in a repo.

The current implementation of "git repo stucture" provides summary information about everything in the repository - all of the branches, remotes, tags, stashes, and notes. But sometimes to properly diagnose a problem, it's useful to be able to get information about the specific part of the repo that's exhibiting a problem.

Add the option to specify a set of filters in the form of a list of include and exclude queries. Each of these specifies a commit or ref or range. The set of objects processed will consist of all objects reachable from any of the includes which are _not_ reached exclusively by paths including any of the excludes.

Updates since v1: this change has been completely rewritten. The original version implemented filters the same way as "git-sizer", by selecting object types to include or exclude. This version drops he type-based filters in favor of specifying object traversal roots and exclusions.

Mark C. Chu-Carroll (1):
  repo: add filtering options to "repo structure"

 Documentation/git-repo.adoc | 41 ++++++++++++++++--
 builtin/repo.c              | 16 +++++--
 t/t1901-repo-structure.sh   | 84 +++++++++++++++++++++++++++++++++++++
 3 files changed, 133 insertions(+), 8 deletions(-)