Merge branch 'gc/submodule-update-part1'

Rewrite of "git submodule update" in C (early part).

* gc/submodule-update-part1:
  submodule--helper update-clone: check for --filter and --init
  submodule update: add tests for --filter
  submodule--helper: remove ensure-core-worktree
  submodule--helper update-clone: learn --init
  submodule--helper: allow setting superprefix for init_submodule()
  submodule--helper: refactor get_submodule_displaypath()
  submodule--helper run-update-procedure: learn --remote
  submodule--helper: don't use bitfield indirection for parse_options()
  submodule--helper: get remote names from any repository
  submodule--helper run-update-procedure: remove --suboid
  submodule--helper: reorganize code for sh to C conversion
  submodule--helper: remove update-module-mode
  submodule tests: test for init and update failure output

2 files changed, 37 insertions, 3 deletions

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 11cccbb333..000e055811 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -205,8 +205,18 @@ test_expect_success 'submodule update should fail due to local changes' '
 	 (cd submodule &&
 	  compare_head
 	 ) &&
-	 test_must_fail git submodule update submodule
-	)
+	 test_must_fail git submodule update submodule 2>../actual.raw
+	) &&
+	sed "s/^> //" >expect <<-\EOF &&
+	> error: Your local changes to the following files would be overwritten by checkout:
+	> 	file
+	> Please commit your changes or stash them before you switch branches.
+	> Aborting
+	> fatal: Unable to checkout OID in submodule path '\''submodule'\''
+	EOF
+	sed -e "s/checkout $SQ[^$SQ]*$SQ/checkout OID/" <actual.raw >actual &&
+	test_cmp expect actual
+
 '
 test_expect_success 'submodule update should throw away changes with --force ' '
 	(cd super &&
@@ -1061,4 +1071,16 @@ test_expect_success 'submodule update --quiet passes quietness to fetch with a s
 	)
 '
 
+test_expect_success 'submodule update --filter requires --init' '
+	test_expect_code 129 git -C super submodule update --filter blob:none
+'
+
+test_expect_success 'submodule update --filter sets partial clone settings' '
+	test_when_finished "rm -rf super-filter" &&
+	git clone cloned super-filter &&
+	git -C super-filter submodule update --init --filter blob:none &&
+	test_cmp_config -C super-filter/submodule true remote.origin.promisor &&
+	test_cmp_config -C super-filter/submodule blob:none remote.origin.partialclonefilter
+'
+
 test_done
diff --git a/t/t7408-submodule-reference.sh b/t/t7408-submodule-reference.sh
index a3892f494b..c3a4545510 100755
--- a/t/t7408-submodule-reference.sh
+++ b/t/t7408-submodule-reference.sh
@@ -193,7 +193,19 @@ test_expect_success 'missing nested submodule alternate fails clone and submodul
 		cd supersuper-clone &&
 		check_that_two_of_three_alternates_are_used &&
 		# update of the submodule fails
-		test_must_fail git submodule update --init --recursive
+		cat >expect <<-\EOF &&
+		fatal: submodule '\''sub'\'' cannot add alternate: path ... does not exist
+		Failed to clone '\''sub'\''. Retry scheduled
+		fatal: submodule '\''sub-dissociate'\'' cannot add alternate: path ... does not exist
+		Failed to clone '\''sub-dissociate'\''. Retry scheduled
+		fatal: submodule '\''sub'\'' cannot add alternate: path ... does not exist
+		Failed to clone '\''sub'\'' a second time, aborting
+		fatal: Failed to recurse into submodule path ...
+		EOF
+		test_must_fail git submodule update --init --recursive 2>err &&
+		grep -e fatal: -e ^Failed err >actual.raw &&
+		sed -e "s/path $SQ[^$SQ]*$SQ/path .../" <actual.raw >actual &&
+		test_cmp expect actual
 	)
 '