[PATCH v3 0/3] use mailmap by default in git log

It is not uncommon for people to change their name or e-mail address. To facilitate this, Git provides support for the `.mailmap` file, which contains a list of identities and previously used e-mail addresses that are associated with that identity.

Unfortunately, while Git's support for the `.mailmap` file is generally excellent, I recently discovered that `git log` does not treat the mail map file the same as the other tools, instead requiring an explicit flag to use the mailmap file.

I believe this is an unfortunate flaw, as the mailmap file should ideally contain the most current known contact information for a contributor, allowing anyone to contact the contributor about their patches in the future.

New in version 3:
- Rework many mailmap tests to drop redundant `--use-mailmap` and
  more rigorously test --no-use-mailmap and configuration variants.
- Typo fixes in the commit messages.

New in version 2:
- The `--no-use-mailmap` option, which complements `--use-mailmap`.
- Tests for `--no-use-mailmap`.

Ariadne Conill (3):
  log: use mailmap by default
  log: add --no-use-mailmap option to complement --use-mailmap option
  tests: rework mailmap tests for git log

 Documentation/git-log.txt |  5 ++++
 builtin/log.c             |  3 ++-
 t/t4203-mailmap.sh        | 49 ++++++++++++++++++++++++++++++++-------
 3 files changed, 48 insertions(+), 9 deletions(-)