| commit | e5b942136ec1af98551b259997872e9849b2766c | [log] [tgz] |
|---|---|---|
| author | Jonathan Tan <jonathantanmy@google.com> | Mon Aug 17 21:01:33 2020 -0700 |
| committer | Junio C Hamano <gitster@pobox.com> | Tue Aug 18 13:25:05 2020 -0700 |
| tree | a39c432749b498140569babbd35b92d9e428938d | |
| parent | 2b713c272cd8f9dc70ad746e8ba01a93d8baa023 [diff] |
fetch: avoid reading submodule config until needed In "fetch", there are two parameters submodule_fetch_jobs_config and recurse_submodules that can be set in a variety of ways: through .gitmodules, through .git/config, and through the command line. Currently "fetch" handles this by first reading .gitmodules, then reading .git/config (allowing it to overwrite existing values), then reading the command line (allowing it to overwrite existing values). Notice that we can avoid reading .gitmodules if .git/config and/or the command line already provides us with what we need. In addition, if recurse_submodules is found to be "no", we do not need the value of submodule_fetch_jobs_config. Avoiding reading .gitmodules is especially important when we use "git fetch" to perform lazy fetches in a partial clone because the .gitmodules file itself might need to be lazy fetched (and otherwise causing an infinite loop). In light of all this, avoid reading .gitmodules until necessary. When reading it, we may only need one of the two parameters it provides, so teach fetch_config_from_gitmodules() to support NULL arguments. With this patch, users (including Git itself when invoking "git fetch" to lazy-fetch) will be able to guarantee avoiding reading .gitmodules by passing --recurse-submodules=no. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
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