Merge branch 'cm/rebase-i-updates'

Follow-up fixes to "cm/rebase-i" topic.

* cm/rebase-i-updates:
  doc/rebase -i: fix typo in the documentation of 'fixup' command
  t/t3437: fixup the test 'multiple fixup -c opens editor once'
  t/t3437: use named commits in the tests
  t/t3437: simplify and document the test helpers
  t/t3437: check the author date of fixed up commit
  t/t3437: remove the dependency of 'expected-message' file from tests
  t/t3437: fixup here-docs in the 'setup' test
  t/lib-rebase: update the documentation of FAKE_LINES
  rebase -i: clarify and fix 'fixup -c' rebase-todo help
  sequencer: rename a few functions
  sequencer: fixup the datatype of the 'flag' argument

2 files changed, 70 insertions, 59 deletions

diff --git a/t/lib-rebase.sh b/t/lib-rebase.sh
index 27928ecb94..dc75b83451 100644
--- a/t/lib-rebase.sh
+++ b/t/lib-rebase.sh
@@ -15,10 +15,11 @@
 #       specified line.
 #
 #   "<cmd> <lineno>" -- add a line with the specified command
-#       ("pick", "squash", "fixup", "edit", "reword" or "drop") and the
-#       SHA1 taken from the specified line.
+#       ("pick", "squash", "fixup"|"fixup_-C"|"fixup_-c", "edit", "reword" or "drop")
+#       and the SHA1 taken from the specified line.
 #
-#   "exec_cmd_with_args" -- add an "exec cmd with args" line.
+#   "_" -- add a space, like "fixup_-C" implies "fixup -C" and
+#       "exec_cmd_with_args" add an "exec cmd with args" line.
 #
 #   "#" -- Add a comment line.
 #
diff --git a/t/t3437-rebase-fixup-options.sh b/t/t3437-rebase-fixup-options.sh
index 945df2555b..a5a20354e3 100755
--- a/t/t3437-rebase-fixup-options.sh
+++ b/t/t3437-rebase-fixup-options.sh
@@ -9,7 +9,9 @@ This test checks the "fixup [-C|-c]" command of rebase interactive.
 In addition to amending the contents of the commit, "fixup -C"
 replaces the original commit message with the message of the fixup
 commit. "fixup -c" also replaces the original message, but opens the
-editor to allow the user to edit the message before committing.
+editor to allow the user to edit the message before committing. Similar
+to the "fixup" command that works with "fixup!", "fixup -C" works with
+"amend!" upon --autosquash.
 '
 
 . ./test-lib.sh
@@ -18,35 +20,35 @@ editor to allow the user to edit the message before committing.
 
 EMPTY=""
 
+# test_commit_message <rev> -m <msg>
+# test_commit_message <rev> <path>
+# Verify that the commit message of <rev> matches
+# <msg> or the content of <path>.
 test_commit_message () {
-	rev="$1" && # commit or tag we want to test
-	file="$2" && # test against the content of a file
-	git show --no-patch --pretty=format:%B "$rev" >actual-message &&
-	if test "$2" = -m
-	then
-		str="$3" && # test against a string
-		printf "%s\n" "$str" >tmp-expected-message &&
-		file="tmp-expected-message"
-	fi
-	test_cmp "$file" actual-message
+	git show --no-patch --pretty=format:%B "$1" >actual &&
+	case "$2" in
+	-m)
+		echo "$3" >expect &&
+		test_cmp expect actual ;;
+	*)
+		test_cmp "$2" actual ;;
+	esac
 }
 
 get_author () {
 	rev="$1" &&
-	git log -1 --pretty=format:"%an %ae" "$rev"
+	git log -1 --pretty=format:"%an %ae %at" "$rev"
 }
 
 test_expect_success 'setup' '
 	cat >message <<-EOF &&
-		amend! B
-		${EMPTY}
-		new subject
-		${EMPTY}
-		new
-		body
-		EOF
-
-	sed "1,2d" message >expected-message &&
+	amend! B
+	$EMPTY
+	new subject
+	$EMPTY
+	new
+	body
+	EOF
 
 	test_commit A A &&
 	test_commit B B &&
@@ -68,40 +70,43 @@ test_expect_success 'setup' '
 	echo B1 >B &&
 	test_tick &&
 	git commit --fixup=HEAD -a &&
+	git tag B1 &&
 	test_tick &&
 	git commit --allow-empty -F - <<-EOF &&
-		amend! B
-		${EMPTY}
-		B
-		${EMPTY}
-		edited 1
-		EOF
+	amend! B
+	$EMPTY
+	B
+	$EMPTY
+	edited 1
+	EOF
 	test_tick &&
 	git commit --allow-empty -F - <<-EOF &&
-		amend! amend! B
-		${EMPTY}
-		B
-		${EMPTY}
-		edited 1
-		${EMPTY}
-		edited 2
-		EOF
+	amend! amend! B
+	$EMPTY
+	B
+	$EMPTY
+	edited 1
+	$EMPTY
+	edited 2
+	EOF
 	echo B2 >B &&
 	test_tick &&
 	FAKE_COMMIT_AMEND="edited squash" git commit --squash=HEAD -a &&
+	git tag B2 &&
 	echo B3 >B &&
 	test_tick &&
 	git commit -a -F - <<-EOF &&
-		amend! amend! amend! B
-		${EMPTY}
-		B
-		${EMPTY}
-		edited 1
-		${EMPTY}
-		edited 2
-		${EMPTY}
-		edited 3
-		EOF
+	amend! amend! amend! B
+	$EMPTY
+	B
+	$EMPTY
+	edited 1
+	$EMPTY
+	edited 2
+	$EMPTY
+	edited 3
+	EOF
+	git tag B3 &&
 
 	GIT_AUTHOR_NAME="Rebase Author" &&
 	GIT_AUTHOR_EMAIL="rebase.author@example.com" &&
@@ -134,6 +139,7 @@ test_expect_success 'simple fixup -c works' '
 test_expect_success 'fixup -C removes amend! from message' '
 	test_when_finished "test_might_fail git rebase --abort" &&
 	git checkout --detach A1 &&
+	git log -1 --pretty=format:%b >expected-message &&
 	FAKE_LINES="1 fixup_-C 2" git rebase -i A &&
 	test_cmp_rev HEAD^ A &&
 	test_cmp_rev HEAD^{tree} A1^{tree} &&
@@ -145,13 +151,14 @@ test_expect_success 'fixup -C removes amend! from message' '
 test_expect_success 'fixup -C with conflicts gives correct message' '
 	test_when_finished "test_might_fail git rebase --abort" &&
 	git checkout --detach A1 &&
+	git log -1 --pretty=format:%b >expected-message &&
+	test_write_lines "" "edited" >>expected-message &&
 	test_must_fail env FAKE_LINES="1 fixup_-C 2" git rebase -i conflicts &&
 	git checkout --theirs -- A &&
 	git add A &&
 	FAKE_COMMIT_AMEND=edited git rebase --continue &&
 	test_cmp_rev HEAD^ conflicts &&
 	test_cmp_rev HEAD^{tree} A1^{tree} &&
-	test_write_lines "" edited >>expected-message &&
 	test_commit_message HEAD expected-message &&
 	get_author HEAD >actual-author &&
 	test_cmp expected-author actual-author
@@ -167,12 +174,12 @@ test_expect_success 'skipping fixup -C after fixup gives correct message' '
 '
 
 test_expect_success 'sequence of fixup, fixup -C & squash --signoff works' '
-	git checkout --detach branch &&
+	git checkout --detach B3 &&
 	FAKE_LINES="1 fixup 2 fixup_-C 3 fixup_-C 4 squash 5 fixup_-C 6" \
 		FAKE_COMMIT_AMEND=squashed \
 		FAKE_MESSAGE_COPY=actual-squash-message \
 		git -c commit.status=false rebase -ik --signoff A &&
-	git diff-tree --exit-code --patch HEAD branch -- &&
+	git diff-tree --exit-code --patch HEAD B3 -- &&
 	test_cmp_rev HEAD^ A &&
 	test_i18ncmp "$TEST_DIRECTORY/t3437/expected-squash-message" \
 		actual-squash-message
@@ -180,7 +187,7 @@ test_expect_success 'sequence of fixup, fixup -C & squash --signoff works' '
 
 test_expect_success 'first fixup -C commented out in sequence fixup fixup -C fixup -C' '
 	test_when_finished "test_might_fail git rebase --abort" &&
-	git checkout branch && git checkout --detach branch~2 &&
+	git checkout --detach B2~ &&
 	git log -1 --pretty=format:%b >expected-message &&
 	FAKE_LINES="1 fixup 2 fixup_-C 3 fixup_-C 4" git rebase -i A &&
 	test_cmp_rev HEAD^ A &&
@@ -190,13 +197,16 @@ test_expect_success 'first fixup -C commented out in sequence fixup fixup -C fix
 test_expect_success 'multiple fixup -c opens editor once' '
 	test_when_finished "test_might_fail git rebase --abort" &&
 	git checkout --detach A3 &&
-	base=$(git rev-parse HEAD~4) &&
-	FAKE_COMMIT_MESSAGE="Modified-A3" \
+	git log -1 --pretty=format:%B >expected-message &&
+	test_write_lines "" "Modified-A3" >>expected-message &&
+	FAKE_COMMIT_AMEND="Modified-A3" \
 		FAKE_LINES="1 fixup_-C 2 fixup_-c 3 fixup_-c 4" \
 		EXPECT_HEADER_COUNT=4 \
-		git rebase -i $base &&
-	test_cmp_rev $base HEAD^ &&
-	test 1 = $(git show | grep Modified-A3 | wc -l)
+		git rebase -i A &&
+	test_cmp_rev HEAD^ A &&
+	get_author HEAD >actual-author &&
+	test_cmp expected-author actual-author &&
+	test_commit_message HEAD expected-message
 '
 
 test_expect_success 'sequence squash, fixup & fixup -c gives combined message' '
@@ -211,12 +221,12 @@ test_expect_success 'sequence squash, fixup & fixup -c gives combined message' '
 '
 
 test_expect_success 'fixup -C works upon --autosquash with amend!' '
-	git checkout --detach branch &&
+	git checkout --detach B3 &&
 	FAKE_COMMIT_AMEND=squashed \
 		FAKE_MESSAGE_COPY=actual-squash-message \
 		git -c commit.status=false rebase -ik --autosquash \
 						--signoff A &&
-	git diff-tree --exit-code --patch HEAD branch -- &&
+	git diff-tree --exit-code --patch HEAD B3 -- &&
 	test_cmp_rev HEAD^ A &&
 	test_i18ncmp "$TEST_DIRECTORY/t3437/expected-squash-message" \
 		actual-squash-message