From 4925adb4dac1f794cc5d5c82dee49e2f5f47560f Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Tue, 26 Apr 2022 20:43:19 +0000 Subject: [PATCH] object-name: diagnose trees in index properly When running 'git show :' where '' is a directory, then there is a subtle difference between a full checkout and a sparse checkout. The error message from diagnose_invalid_index_path() reports whether the path is on disk or not. The full checkout will have the directory on disk, but the path will not be in the index. The sparse checkout could have the directory not exist, specifically when that directory is outside of the sparse-checkout cone. In the case of a sparse index, we have yet another state: the path can be a sparse directory in the index. In this case, the error message from diagnose_invalid_index_path() would erroneously say "path '' is in the index, but not at stage 0", which is false. Add special casing around sparse directory entries so we get to the correct error message. This requires two checks in order to get parity with the normal sparse-checkout case. Signed-off-by: Derrick Stolee Signed-off-by: Junio C Hamano --- object-name.c | 6 ++++-- t/t1092-sparse-checkout-compatibility.sh | 18 ++++++++++++------ 2 files changed, 16 insertions(+), 8 deletions(-) diff --git a/object-name.c b/object-name.c index 2dc5d2549b8..4d2746574cd 100644 --- a/object-name.c +++ b/object-name.c @@ -1832,7 +1832,8 @@ static void diagnose_invalid_index_path(struct repository *r, pos = -pos - 1; if (pos < istate->cache_nr) { ce = istate->cache[pos]; - if (ce_namelen(ce) == namelen && + if (!S_ISSPARSEDIR(ce->ce_mode) && + ce_namelen(ce) == namelen && !memcmp(ce->name, filename, namelen)) die(_("path '%s' is in the index, but not at stage %d\n" "hint: Did you mean ':%d:%s'?"), @@ -1848,7 +1849,8 @@ static void diagnose_invalid_index_path(struct repository *r, pos = -pos - 1; if (pos < istate->cache_nr) { ce = istate->cache[pos]; - if (ce_namelen(ce) == fullname.len && + if (!S_ISSPARSEDIR(ce->ce_mode) && + ce_namelen(ce) == fullname.len && !memcmp(ce->name, fullname.buf, fullname.len)) die(_("path '%s' is in the index, but not '%s'\n" "hint: Did you mean ':%d:%s' aka ':%d:./%s'?"), diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh index 08c9cfd359e..fa1d5603605 100755 --- a/t/t1092-sparse-checkout-compatibility.sh +++ b/t/t1092-sparse-checkout-compatibility.sh @@ -1158,15 +1158,21 @@ test_expect_success 'show (cached blobs/trees)' ' test_all_match git show :deep/a && test_sparse_match git show :folder1/a && - # Asking "git show" for directories in the index - # had different behavior depending on the existence - # of a sparse index. + # The error message differs depending on whether + # the directory exists in the worktree. test_all_match test_must_fail git show :deep/ && test_must_fail git -C full-checkout show :folder1/ && - test_must_fail git -C sparse-checkout show :folder1/ && + test_sparse_match test_must_fail git show :folder1/ && - test_must_fail git -C sparse-index show :folder1/ 2>err && - grep "is in the index, but not at stage 0" err + # Change the sparse cone for an extra case: + run_on_sparse git sparse-checkout set deep/deeper1 && + + # deep/deeper2 is a sparse directory in the sparse index. + test_sparse_match test_must_fail git show :deep/deeper2/ && + + # deep/deeper2/deepest is not in the sparse index, but + # will trigger an index expansion. + test_sparse_match test_must_fail git show :deep/deeper2/deepest/ ' test_expect_success 'submodule handling' '