List of authors in git since a given commit

Question

I want a way to list all git authors that

1. Is only since a given commit.
2. Is unique.

These two are easy, and I\'ve seen some solutions to thi

Answer 1

Note for people who want "global stat":

git shortlog -s -n -e

Give the global stats commits by author.

Answer 2

The following format specifiers will solve your second concern:

%aN: author name (respecting .mailmap)
%aE: author email (respecting .mailmap)
%cN: committer name (respecting .mailmap)
%cE: committer email (respecting .mailmap)

So discounting the duplicate author part, you want something like

git log <commit>.. --format="%aN <%aE>" --reverse

I suspect you could pipe it through something that does a hash-table based deduplication, a perl oneliner would be trivial:

git log <commit>.. --format="%aN <%aE>" --reverse | perl -e 'my %dedupe; while (<STDIN>) { print unless $dedupe{$_}++}'