Adrian Ratiu 4173df5187 submodule: introduce extensions.submodulePathConfig ...

The idea of this extension is to abstract away the submodule gitdir
path implementation: everyone is expected to use the config and not
worry about how the path is computed internally, either in git or
other implementations.

With this extension enabled, the submodule.<name>.gitdir repo config
becomes the single source of truth for all submodule gitdir paths.

The submodule.<name>.gitdir config is added automatically for all new
submodules when this extension is enabled.

Git will throw an error if the extension is enabled and a config is
missing, advising users how to migrate. Migration is manual for now.

E.g. to add a missing config entry for an existing "foo" module:
git config submodule.foo.gitdir .git/modules/foo

Suggested-by: Junio C Hamano <gitster@pobox.com>
Suggested-by: Phillip Wood <phillip.wood123@gmail.com>
Suggested-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2026-01-12 11:56:55 -08:00

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