submodule.c: report the submodule that an error occurs in

When an error occurs in updating the working tree of a submodule in submodule_move_head, tell the user which submodule the error occurred in. The call to read-tree contains a super-prefix, such that the read-tree will correctly report any path related issues, but some error messages do not contain a path, for example: ~/gerrit$ git checkout --recurse-submodules origin/master ~/gerrit$ fatal: failed to unpack tree object 07672f31880ba80300b38492df9d0acfcd6ee00a Give the hint which submodule has a problem. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Stefan Beller committed Jun 20, 2018 at 15:32 UTC ba95d4e4bdf03badef6bc5c44bc059464f3e79d3
2 files changed +3 -2
submodule.c
+1 -1
@@ -1663,7 +1663,7 @@ int submodule_move_head(const char *path,
1663 argv_array_push(&cp.args, new ? new : EMPTY_TREE_SHA1_HEX);
1664
1665 if (run_command(&cp)) {
1666 - ret = -1;
1666 + ret = error(_("Submodule '%s' could not be updated."), path);
1667 goto out;
1668 }
1669
t/lib-submodule-update.sh
+2 -1
@@ -781,7 +781,8 @@ test_submodule_recursing_with_args_common() {
781 (
782 cd submodule_update &&
783 git branch -t invalid_sub1 origin/invalid_sub1 &&
784 - test_must_fail $command invalid_sub1 &&
784 + test_must_fail $command invalid_sub1 2>err &&
785 + test_i18ngrep sub1 err &&
786 test_superproject_content origin/add_sub1 &&
787 test_submodule_content sub1 origin/add_sub1
788 )