[RFC/PATCH 2/2] log: add "--no-show-signature" command line option

[Mehul Jain <mehul.jain2029@gmail.com>]

If "log.showsignature=true", then there is no way to override it using
command line switch.

Teach "git log" and "git show" about "--no-show-signature" command line
option.

Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com>
---
 revision.c     | 2 ++
 t/t4202-log.sh | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/revision.c b/revision.c
index d30d1c4..3546ff9 100644
--- a/revision.c
+++ b/revision.c
@@ -1871,6 +1871,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 		revs->notes_opt.use_default_notes = 1;
 	} else if (!strcmp(arg, "--show-signature")) {
 		revs->show_signature = 1;
+	} else if (!strcmp(arg, "--no-show-signature")) {
+		revs->show_signature = 0;
 	} else if (!strcmp(arg, "--show-linear-break") ||
 		   starts_with(arg, "--show-linear-break=")) {
 		if (starts_with(arg, "--show-linear-break="))
diff --git a/t/t4202-log.sh b/t/t4202-log.sh
index 36be9a1..ea24259 100755
--- a/t/t4202-log.sh
+++ b/t/t4202-log.sh
@@ -901,6 +901,13 @@ test_expect_success GPG 'log.showsignature=true behaves like --show-signature' '
 	test_i18ngrep "gpg: Good signature" actual
 '
 
+test_expect_success GPG '--no-show-signature overrides log.showsignature=true' '
+	git config log.showsignature true &&
+	git log -1 --no-show-signature signed >actual &&
+	test "$(test_i18ngrep "gpg: Signature made" actual)" = "" &&
+	test "$(test_i18ngrep "gpg: Good signature" actual)" = ""
+'
+
 test_expect_success GPG '--show-signature overrides log.showsignature=false' '
 	test_when_finished "git reset --hard && git checkout master" &&
 	git config log.showsignature false &&
-- 
2.9.0.rc0.dirty