Merge branch 'ab/mailmap'

Clean-up docs, codepaths and tests around mailmap.

* ab/mailmap: (22 commits)
  shortlog: remove unused(?) "repo-abbrev" feature
  mailmap doc + tests: document and test for case-insensitivity
  mailmap tests: add tests for empty "<>" syntax
  mailmap tests: add tests for whitespace syntax
  mailmap tests: add a test for comment syntax
  mailmap doc + tests: add better examples & test them
  tests: refactor a few tests to use "test_commit --append"
  test-lib functions: add an --append option to test_commit
  test-lib functions: add --author support to test_commit
  test-lib functions: document arguments to test_commit
  test-lib functions: expand "test_commit" comment template
  mailmap: test for silent exiting on missing file/blob
  mailmap tests: get rid of overly complex blame fuzzing
  mailmap tests: add a test for "not a blob" error
  mailmap tests: remove redundant entry in test
  mailmap tests: improve --stdin tests
  mailmap tests: modernize syntax & test idioms
  mailmap tests: use our preferred whitespace syntax
  mailmap doc: start by mentioning the comment syntax
  check-mailmap doc: note config options
  ...

1 files changed, 3 insertions, 9 deletions

diff --git a/t/t2012-checkout-last.sh b/t/t2012-checkout-last.sh
index 028a00d6ba..0e7d47ab31 100755
--- a/t/t2012-checkout-last.sh
+++ b/t/t2012-checkout-last.sh
@@ -8,13 +8,9 @@ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 . ./test-lib.sh
 
 test_expect_success 'setup' '
-	echo hello >world &&
-	git add world &&
-	git commit -m initial &&
+	test_commit initial world hello &&
 	git branch other &&
-	echo "hello again" >>world &&
-	git add world &&
-	git commit -m second
+	test_commit --append second world "hello again"
 '
 
 test_expect_success '"checkout -" does not work initially' '
@@ -96,9 +92,7 @@ test_expect_success 'switch to twelfth from the last' '
 
 test_expect_success 'merge base test setup' '
 	git checkout -b another other &&
-	echo "hello again" >>world &&
-	git add world &&
-	git commit -m third
+	test_commit --append third world "hello again"
 '
 
 test_expect_success 'another...main' '