Merge branch 'sb/maint-octopus' into maint

* sb/maint-octopus:
  octopus: remove dead code
  octopus: reenable fast-forward merges
  octopus: make merge process simpler to follow

Conflicts:
	git-merge-octopus.sh

t/t7602-merge-octopus-many.sh

@@ -49,4 +49,55 @@ test_expect_success 'merge c1 with c2, c3, c4, ... c29' '
 	done
 '
 
+cat >expected <<\EOF
+Trying simple merge with c2
+Trying simple merge with c3
+Trying simple merge with c4
+Merge made by octopus.
+ c2.c |    1 +
+ c3.c |    1 +
+ c4.c |    1 +
+ 3 files changed, 3 insertions(+), 0 deletions(-)
+ create mode 100644 c2.c
+ create mode 100644 c3.c
+ create mode 100644 c4.c
+EOF
+
+test_expect_success 'merge output uses pretty names' '
+	git reset --hard c1 &&
+	git merge c2 c3 c4 >actual &&
+	test_cmp actual expected
+'
+
+cat >expected <<\EOF
+Already up-to-date with c4
+Trying simple merge with c5
+Merge made by octopus.
+ c5.c |    1 +
+ 1 files changed, 1 insertions(+), 0 deletions(-)
+ create mode 100644 c5.c
+EOF
+
+test_expect_success 'merge up-to-date output uses pretty names' '
+	git merge c4 c5 >actual &&
+	test_cmp actual expected
+'
+
+cat >expected <<\EOF
+Fast-forwarding to: c1
+Trying simple merge with c2
+Merge made by octopus.
+ c1.c |    1 +
+ c2.c |    1 +
+ 2 files changed, 2 insertions(+), 0 deletions(-)
+ create mode 100644 c1.c
+ create mode 100644 c2.c
+EOF
+
+test_expect_success 'merge fast-forward output uses pretty names' '
+	git reset --hard c0 &&
+	git merge c1 c2 >actual &&
+	test_cmp actual expected
+'
+
 test_done