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pull: warn on --verify-signatures with --rebase

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git-pull silently ignores the --verify-signatures option when
running --rebase, potentially leaving users in the belief that
the rebase operation would check for valid GPG signatures.

Implementing --verify-signatures for git-rebase was talked about,
but doubts for a valid workflow rose up.  Since you usually merge
other's branches into your branch you might have an interest that
their side has a valid GPG signature.

Rebasing, on the other hand, is to rebuild your branch on top of
other's work, in order to push the result back, and it is too late
to reject their work even if you find their commits lack acceptable
signature.

Let's warn users that the --verify-signatures option is ignored
during "pull --rebase"; users do not wonder what would happen if
their commits lack acceptable signature that way.

Signed-off-by: Alexander Hirsch <1zeeky@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Alexander Hirsch 2016-05-20 23:00:54 +02:00 committed by Junio C Hamano
parent 3916adf997
commit c57e501c51
2 changed files with 19 additions and 0 deletions
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3
builtin/pull.c
View file

@ -815,6 +815,9 @@ static int run_rebase(const unsigned char *curr_head,
argv_array_push(&args, "--no-autostash");
else if (opt_autostash == 1)
argv_array_push(&args, "--autostash");
if (opt_verify_signatures &&
!strcmp(opt_verify_signatures, "--verify-signatures"))
warning(_("ignoring --verify-signatures for rebase"));
argv_array_push(&args, "--onto");
argv_array_push(&args, sha1_to_hex(merge_head));

16
t/t5520-pull.sh
View file

@ -341,6 +341,22 @@ test_expect_success 'branch.to-rebase.rebase should override pull.rebase' '
test new = "$(git show HEAD:file2)"
'
test_expect_success "pull --rebase warns on --verify-signatures" '
git reset --hard before-rebase &&
git pull --rebase --verify-signatures . copy 2>err &&
test "$(git rev-parse HEAD^)" = "$(git rev-parse copy)" &&
test new = "$(git show HEAD:file2)" &&
test_i18ngrep "ignoring --verify-signatures for rebase" err
'
test_expect_success "pull --rebase does not warn on --no-verify-signatures" '
git reset --hard before-rebase &&
git pull --rebase --no-verify-signatures . copy 2>err &&
test "$(git rev-parse HEAD^)" = "$(git rev-parse copy)" &&
test new = "$(git show HEAD:file2)" &&
test_i18ngrep ! "verify-signatures" err
'
# add a feature branch, keep-merge, that is merged into master, so the
# test can try preserving the merge commit (or not) with various
# --rebase flags/pull.rebase settings.