Jeff King <peff@xxxxxxxx> writes:
> So I think the motivation and premise are good, but...
>
>> -static int commit_tree_config(const char *var, const char *value, void *cb)
>> -{
>> - int status = git_gpg_config(var, value, NULL);
>> - if (status)
>> - return status;
>> - if (!strcmp(var, "commit.gpgsign")) {
>> - sign_commit = git_config_bool(var, value) ? "" : NULL;
>> - return 0;
>> - }
>> - return git_default_config(var, value, cb);
>> -}
>> -
>
> I think this may be going too far. If I do "git commit-tree -S", I'd
> expect it to use gpg.program, but here you are dropping the call to
> git_gpg_config. Likewise for user.signingkey.
Thanks (and thanks Eric for typospotting).
-- >8 --
ba3c69a9 (commit: teach --gpg-sign option, 2011-10-05) introduced a
"signed commit" by teaching the --[no]-gpg-sign option and the
commit.gpgsign configuration variable to various commands that
create commits.
Teaching these to "git commit" and "git merge", both of which are
end-user facing Porcelain commands, was perfectly fine. Allowing
the plumbing "git commit-tree" to suddenly change the behaviour to
surprise the scripts by paying attention to commit.gpgsign was not.
Among the in-tree scripts, filter-branch, quiltimport, rebase and
stash are the commands that run "commit-tree". If any of these
wants to allow users to always sign every single commit, they should
offer their own configuration (e.g. "filterBranch.gpgsign") with an
option to disable signing (e.g. "git filter-branch --no-gpgsign").
Ignoring commit.gpgsign option _obviously_ breaks the backward
compatibility, but it is easy to follow the standard pattern in
scripts to honor whatever configuration variable they choose to
follow. E.g.
case $(git config --bool commit.gpgsign) in
true) sign=-S ;;
*) sign= ;;
esac &&
git commit-tree $sign ...whatever other args...
Do so to make sure that "git rebase" keeps paying attention to the
configuration variable, which unfortunately is a documented mistake.
Helped-by: Jeff King <peff@xxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
Documentation/git-commit-tree.txt | 4 ++--
builtin/commit-tree.c | 4 ----
git-rebase.sh | 5 ++++-
t/t7510-signed-commit.sh | 13 ++++++++++---
4 files changed, 16 insertions(+), 10 deletions(-)
diff --git a/Documentation/git-commit-tree.txt b/Documentation/git-commit-tree.txt
index f5f2a8d..eb273c3 100644
--- a/Documentation/git-commit-tree.txt
+++ b/Documentation/git-commit-tree.txt
@@ -59,8 +59,8 @@ OPTIONS
GPG-sign commit.
--no-gpg-sign::
- Countermand `commit.gpgSign` configuration variable that is
- set to force each and every commit to be signed.
+ Do not GPG-sign commit, to countermand a `--gpg-sign` option
+ given earlier on the command line.
Commit Information
diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c
index 25aa2cd..15de7e8 100644
--- a/builtin/commit-tree.c
+++ b/builtin/commit-tree.c
@@ -33,10 +33,6 @@ static int commit_tree_config(const char *var, const char *value, void *cb)
int status = git_gpg_config(var, value, NULL);
if (status)
return status;
- if (!strcmp(var, "commit.gpgsign")) {
- sign_commit = git_config_bool(var, value) ? "" : NULL;
- return 0;
- }
return git_default_config(var, value, cb);
}
diff --git a/git-rebase.sh b/git-rebase.sh
index 90854e3..4d46662 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -87,7 +87,10 @@ preserve_merges=
autosquash=
keep_empty=
test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t
-gpg_sign_opt=
+case "$(git config --bool commit.gpgsign)" in
+true) gpg_sign_opt=-S ;;
+*) gpg_sign_opt= ;;
+esac
read_basic_state () {
test -f "$state_dir/head-name" &&
diff --git a/t/t7510-signed-commit.sh b/t/t7510-signed-commit.sh
index 13331e5..7b365ee 100755
--- a/t/t7510-signed-commit.sh
+++ b/t/t7510-signed-commit.sh
@@ -45,12 +45,18 @@ test_expect_success GPG 'create signed commits' '
git tag seventh-signed &&
echo 8 >file && test_tick && git commit -a -m eighth -SB7227189 &&
- git tag eighth-signed-alt
+ git tag eighth-signed-alt &&
+
+ # commit.gpgsign is still on but this must not be signed
+ git tag ninth-unsigned $(echo 9 | git commit-tree HEAD^{tree}) &&
+ # explicit -S of course must sign.
+ git tag tenth-signed $(echo 9 | git commit-tree -S HEAD^{tree})
'
test_expect_success GPG 'verify and show signatures' '
(
- for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
+ for commit in initial second merge fourth-signed \
+ fifth-signed sixth-signed seventh-signed tenth-signed
do
git verify-commit $commit &&
git show --pretty=short --show-signature $commit >actual &&
@@ -60,7 +66,8 @@ test_expect_success GPG 'verify and show signatures' '
done
) &&
(
- for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
+ for commit in merge^2 fourth-unsigned sixth-unsigned \
+ seventh-unsigned ninth-unsigned
do
test_must_fail git verify-commit $commit &&
git show --pretty=short --show-signature $commit >actual &&
--
2.8.2-486-gecbb083
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