[PATCH v2 0/4] am: support --allow-empty option to am empty commits

Since that git has supported the --always option for the git-format-patch command to create a patch with empty commit message, git-am should support applying and committing with empty patches.

Changes since v1:

 * test: am: add the case when not passing the --always option
 * chore: am: rename the --always option to --allow-empty

Aleen (4):
  doc: git-format-patch: specify the option --always
  am: support --always option to am empty commits
  test: am: add the case when not passing the --always option
  chore: am: rename the --always option to --allow-empty

 Documentation/git-am.txt           |  5 +++++
 Documentation/git-format-patch.txt |  5 +++++
 builtin/am.c                       | 18 +++++++++++++--
 t/t4150-am.sh                      | 35 ++++++++++++++++++++++++++++++
 4 files changed, 61 insertions(+), 2 deletions(-)

base-commit: b550198c73edd4cc058832dcf74b41aeec2adba2
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1076%2Faleen42%2Fnext-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1076/aleen42/next-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/1076

Range-diff vs v1:

 1:  71e6989375c = 1:  71e6989375c doc: git-format-patch: specify the option --always
 2:  59b1417da37 = 2:  59b1417da37 am: support --always option to am empty commits
 -:  ----------- > 3:  da024ced668 test: am: add the case when not passing the --always option
 -:  ----------- > 4:  45e9720f40b chore: am: rename the --always option to --allow-empty