Previously known as git-cc-cmd, I've renamed it git-related (tentatively). I
removed support for aliases, as I don't think it's very useful, and I've added
support for mailmap, which I think covers similar use-cases.

This script allows you to get a list of relevant persons to Cc when sending a
patch series.

  % git cc-cmd v1.8.1.6^^1..v1.8.1.6^^2
  Junio C Hamano <gits...@pobox.com> (signer: 84%, author: 15%)
  "Nguyễn Thái Ngọc Duy" <pclo...@gmail.com> (author: 38%, signer: 7%)
  Michael Haggerty <mhag...@alum.mit.edu> (author: 15%)
  Jean-Noel Avila <jn.av...@free.fr> (signer: 7%)
  "Jean-Noël AVILA" <avila...@gmail.com> (author: 7%)
  "Henrik Grubbström" <gru...@grubba.org> (author: 7%)
  Clemens Buchacher <dri...@aon.at> (author: 7%)
  Joshua Jensen <jjen...@workspacewhiz.com> (author: 7%)
  Johannes Sixt <j...@kdbg.org> (signer: 7%)

It finds people that might be interesting in a patch, by going back through the
history for each single hunk modified, and finding people that reviewed,
acknowledge, signed, or authored the code the patch is modifying.

It does this by running 'git blame' incrementally on each hunk, and then
parsing the commit message. After gathering all the relevant people, it groups
them to show what exactly was their role when the participated in the
development of the relevant commit, and on how many relevant commits they
participated. They are only displayed if they pass a minimum threshold of

The code finds the changes in each commit in the list, runs 'git blame'
to see which other commits are relevant to those lines, and then adds
the author and signer to the list.

Finally, it calculates what percentage of the total relevant commits
each person was involved in, and if it passes the threshold, it goes in.

You can also choose to show the commits themselves:

  % git cc-cmd --commits v1.8.1.6^^1..v1.8.1.6^^2
  9db9eec attr: avoid calling find_basename() twice per path
  94bc671 Add directory pattern matching to attributes
  82dce99 attr: more matching optimizations from .gitignore
  593cb88 exclude: split basename matching code into a separate function
  b559263 exclude: split pathname matching code into a separate function
  4742d13 attr: avoid searching for basename on every match
  f950eb9 rename pathspec_prefix() to common_prefix() and move to dir.[ch]
  4a085b1 consolidate pathspec_prefix and common_prefix
  d932f4e Rename git_checkattr() to git_check_attr()
  2d72174 Extract a function collect_all_attrs()
  8cf2a84 Add string comparison functions that respect the ignore_case variable.
  407a963 Merge branch 'rr/remote-helper-doc'
  ec775c4 attr: Expand macros immediately when encountered.

But wait, there's more: you can also specify a list of patch files, which means
this can be used for 'git send-emails' --cc-cmd option.

Felipe Contreras (11):
  Add new git-related  helper to contrib
  contrib: related: add option parsing
  contrib: related: add support for multiple patches
  contrib: related: add option to show commits
  contrib: related: add option to parse from committish
  contrib: related: parse committish like format-patch
  contrib: related: fix parsing of rev-list args
  contrib: related: support multiple roles
  contrib: related: sort by participation
  contrib: related: group persons with same email
  contrib: related: add support for mailmap

 contrib/related/git-related | 272 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 272 insertions(+)
 create mode 100755 contrib/related/git-related


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