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authorLibravatar brian m. carlson <sandals@crustytoothpaste.net>2020-05-21 02:07:11 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2020-05-21 09:55:21 -0700
commit81861288a987c6e05526526fa5dc74d2e2b80a5a (patch)
tree813f96efd91ec8059dda5ecaf5c4c3681ea00e4a /t/perf
parentt0021: test filter metadata for additional cases (diff)
downloadtgif-81861288a987c6e05526526fa5dc74d2e2b80a5a.tar.xz
builtin/checkout: simplify metadata initialization
When we call init_checkout_metadata in reset_tree, we want to pass the object ID of the commit in question so that it can be passed to filters, or if there is no commit, the tree. We anticipated this latter case, which can occur elsewhere in the checkout code, but it cannot occur here. The only case in which we do not have a commit object is when invoking git switch with --orphan. Moreover, we can only hit this code path without a commit object additionally with either --force or --discard-changes. In such a case, there is no point initializing the checkout metadata with a commit or tree because (a) there is no commit, only the empty tree, and (b) we will never use the data, since no files will be smudged when checking out a branch with no files. Pass the all-zeros object ID in this case, since we just need some value which is a valid pointer. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Reviewed-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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