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Merge branch 'sb/submodule-recursive-checkout-detach-head'
"git checkout --recursive" may overwrite and rewind the history of the branch that happens to be checked out in submodule repositories, which might not be desirable. Detach the HEAD but still allow the recursive checkout to succeed in such a case. * sb/submodule-recursive-checkout-detach-head: Documentation/checkout: clarify submodule HEADs to be detached recursive submodules: detach HEAD from new state
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0b75572a1b
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@ -264,6 +264,8 @@ section of linkgit:git-add[1] to learn how to operate the `--patch` mode.
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local modifications in a submodule would be overwritten the checkout
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will fail unless `-f` is used. If nothing (or --no-recurse-submodules)
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is used, the work trees of submodules will not be updated.
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Just like linkgit:git-submodule[1], this will detach the
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submodules HEAD.
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<branch>::
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Branch to checkout; if it refers to a branch (i.e., a name that,
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@ -1670,7 +1670,8 @@ int submodule_move_head(const char *path,
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cp.dir = path;
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prepare_submodule_repo_env(&cp.env_array);
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argv_array_pushl(&cp.args, "update-ref", "HEAD", new, NULL);
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argv_array_pushl(&cp.args, "update-ref", "HEAD",
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"--no-deref", new, NULL);
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if (run_command(&cp)) {
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ret = -1;
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@ -689,6 +689,23 @@ test_submodule_switch_recursing_with_args () {
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test_submodule_content sub1 origin/add_sub1
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)
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'
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test_expect_success "$command: submodule branch is not changed, detach HEAD instead" '
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prolog &&
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reset_work_tree_to_interested add_sub1 &&
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(
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cd submodule_update &&
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git -C sub1 checkout -b keep_branch &&
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git -C sub1 rev-parse HEAD >expect &&
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git branch -t check-keep origin/modify_sub1 &&
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$command check-keep &&
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test_superproject_content origin/modify_sub1 &&
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test_submodule_content sub1 origin/modify_sub1 &&
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git -C sub1 rev-parse keep_branch >actual &&
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test_cmp expect actual &&
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test_must_fail git -C sub1 symbolic-ref HEAD
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)
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'
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# Replacing a tracked file with a submodule produces a checked out submodule
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test_expect_success "$command: replace tracked file with submodule checks out submodule" '
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prolog &&
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