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submodule: correct error message for missing commits 

When a submodule diff should be displayed we currently just add the
submodule objects to the main object store and then e.g. walk the
revision graph and create a summary for that submodule.

It is possible that we are missing the submodule either completely or
partially, which we currently differentiate with different error messages
depending on whether (1) the whole submodule object store is missing or
(2) just the needed for this particular diff. (1) is reported as
"not initialized", and (2) is reported as "commits not present".

If a submodule is deinit'ed its repository data is still around inside
the superproject, such that the diff can still be produced. In that way
the error message (1) is misleading as we can have a diff despite the
submodule being not initialized.

Downgrade the error message (1) to be the same as (2) and just say
the commits are not present, as that is the true reason why the diff
cannot be shown.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2017-09-26 11:27:56 -07:00 committed by Junio C Hamano
parent 7451fcdc0d
commit 2d94dd2fc6
2 changed files with 2 additions and 2 deletions
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2
submodule.c
View File

@ -503,7 +503,7 @@ static void show_submodule_header(struct diff_options *o, const char *path,
if (add_submodule_odb(path)) {
if (!message)
message = "(not initialized)";
message = "(commits not present)";
goto output_header;
}

2
t/t4059-diff-submodule-not-initialized.sh
View File

@ -95,7 +95,7 @@ test_expect_success 'submodule not initialized in new clone' '
git clone . sm3 &&
git -C sm3 diff-tree -p --no-commit-id --submodule=log HEAD >actual &&
cat >expected <<-EOF &&
Submodule sm1 $smhead1...$smhead2 (not initialized)
Submodule sm1 $smhead1...$smhead2 (commits not present)
EOF
test_cmp expected actual
'