Stefan Beller <sbeller@xxxxxxxxxx> writes:
> When working with submodules, it is easy to forget to push the submodules.
> The setting 'check', which checks if any existing submodule is present on
> at least one remote of the submodule remotes, is designed to prevent this
> mistake.
>
> Flipping the default to check for submodules is safer than the current
> default of ignoring submodules while pushing.
>
> However checking for submodules requires additional work[1], which annoys
> users that do not use submodules, so we turn on the check for submodules
> based on a cheap heuristic, the existence of the .git/modules directory.
... and other things like .gitmodules, submodule stuff in
.git/config, etc.?
> + } else if (starts_with(k, "submodule.") && ends_with(k, ".url"))
> + has_submodules_configured = 1;
An in-code comment to explain why ".url" is so special would be
helpful. Documentation/config.txt says .path and .url are both
initially populated by 'git submodule init', which might be outdated
information that confuses readers of the above code.
> @@ -552,6 +564,7 @@ int cmd_push(int argc, const char **argv, const char *prefix)
> };
>
> packet_trace_identity("push");
> + preset_submodule_default();
> git_config(git_push_config, &flags);
> argc = parse_options(argc, argv, prefix, options, push_usage, 0);
> set_push_cert_flags(&flags, push_cert);
> diff --git a/t/t5531-deep-submodule-push.sh b/t/t5531-deep-submodule-push.sh
> index 198ce84..e690749 100755
> --- a/t/t5531-deep-submodule-push.sh
> +++ b/t/t5531-deep-submodule-push.sh
> @@ -65,7 +65,11 @@ test_expect_success 'push fails if submodule commit not on remote' '
> git add gar/bage &&
> git commit -m "Third commit for gar/bage" &&
> # the push should fail with --recurse-submodules=check
> - # on the command line...
> + # on the command line. "check" is the default for repos in
> + # which submodules are detected by existence of config,
> + # .gitmodules file or an internal .git/modules/<submodule-repo>
> + git submodule add -f ../submodule.git gar/bage &&
> + test_must_fail git push ../pub.git master &&
> test_must_fail git push --recurse-submodules=check ../pub.git master &&
>
> # ...or if specified in the configuration..