submodule update: allow custom command to update submodule working tree
Users can set submodule.$name.update to '!command' which will cause
'command' to be run instead of checkout/merge/rebase. This allows
the user finer-grained control over how the update is done.
The primary motivation for this was interoperability with stgit;
however being able to intercept the submodule update process may
prove useful for integrating with or extending other tools.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index cdb0538..bc7cfcd 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -294,6 +294,35 @@
)
'
+test_expect_success 'submodule update - command in .git/config' '
+ (cd super &&
+ git config submodule.submodule.update "!git checkout"
+ ) &&
+ (cd super/submodule &&
+ git reset --hard HEAD^
+ ) &&
+ (cd super &&
+ (cd submodule &&
+ compare_head
+ ) &&
+ git submodule update submodule &&
+ cd submodule &&
+ ! compare_head
+ )
+'
+
+test_expect_success 'submodule update - command in .git/config catches failure' '
+ (cd super &&
+ git config submodule.submodule.update "!false"
+ ) &&
+ (cd super/submodule &&
+ git reset --hard HEAD^
+ ) &&
+ (cd super &&
+ test_must_fail git submodule update submodule
+ )
+'
+
test_expect_success 'submodule init picks up rebase' '
(cd super &&
git config -f .gitmodules submodule.rebasing.update rebase &&
