Merge branch 'tg/checkout-no-overlay'

"git checkout --no-overlay" can be used to trigger a new mode of
checking out paths out of the tree-ish, that allows paths that
match the pathspec that are in the current index and working tree
and are not in the tree-ish.

* tg/checkout-no-overlay:
  revert "checkout: introduce checkout.overlayMode config"
  checkout: introduce checkout.overlayMode config
  checkout: introduce --{,no-}overlay option
  checkout: factor out mark_cache_entry_for_checkout function
  checkout: clarify comment
  read-cache: add invalidate parameter to remove_marked_cache_entries
  entry: support CE_WT_REMOVE flag in checkout_entry
  entry: factor out unlink_entry function
  move worktree tests to t24*

7 files changed, 48 insertions, 0 deletions

diff --git a/t/t2025-checkout-no-overlay.sh b/t/t2025-checkout-no-overlay.sh
new file mode 100755
index 0000000000..76330cb5ab
--- /dev/null
+++ b/t/t2025-checkout-no-overlay.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+test_description='checkout --no-overlay <tree-ish> -- <pathspec>'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	git commit --allow-empty -m "initial"
+'
+
+test_expect_success 'checkout --no-overlay deletes files not in <tree-ish>' '
+	>file &&
+	mkdir dir &&
+	>dir/file1 &&
+	git add file dir/file1 &&
+	git checkout --no-overlay HEAD -- file &&
+	test_path_is_missing file &&
+	test_path_is_file dir/file1
+'
+
+test_expect_success 'checkout --no-overlay removing last file from directory' '
+	git checkout --no-overlay HEAD -- dir/file1 &&
+	test_path_is_missing dir
+'
+
+test_expect_success 'checkout -p --overlay is disallowed' '
+	test_must_fail git checkout -p --overlay HEAD 2>actual &&
+	test_i18ngrep "fatal: -p and --overlay are mutually exclusive" actual
+'
+
+test_expect_success '--no-overlay --theirs with D/F conflict deletes file' '
+	test_commit file1 file1 &&
+	test_commit file2 file2 &&
+	git rm --cached file1 &&
+	echo 1234 >file1 &&
+	F1=$(git rev-parse HEAD:file1) &&
+	F2=$(git rev-parse HEAD:file2) &&
+	{
+		echo "100644 $F1 1	file1" &&
+		echo "100644 $F2 2	file1"
+	} | git update-index --index-info &&
+	test_path_is_file file1 &&
+	git checkout --theirs --no-overlay -- file1 &&
+	test_path_is_missing file1
+'
+
+test_done
diff --git a/t/t2025-worktree-add.sh b/t/t2400-worktree-add.sh
index 286bba35d8..286bba35d8 100755
--- a/t/t2025-worktree-add.sh
+++ b/t/t2400-worktree-add.sh
diff --git a/t/t2026-worktree-prune.sh b/t/t2401-worktree-prune.sh
index b7d6d5d45a..b7d6d5d45a 100755
--- a/t/t2026-worktree-prune.sh
+++ b/t/t2401-worktree-prune.sh
diff --git a/t/t2027-worktree-list.sh b/t/t2402-worktree-list.sh
index bb6fb9b12c..bb6fb9b12c 100755
--- a/t/t2027-worktree-list.sh
+++ b/t/t2402-worktree-list.sh
diff --git a/t/t2028-worktree-move.sh b/t/t2403-worktree-move.sh
index 939d18d728..939d18d728 100755
--- a/t/t2028-worktree-move.sh
+++ b/t/t2403-worktree-move.sh
diff --git a/t/t2029-worktree-config.sh b/t/t2404-worktree-config.sh
index 286121d8de..286121d8de 100755
--- a/t/t2029-worktree-config.sh
+++ b/t/t2404-worktree-config.sh
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 3a2c6326d8..f5e21bf970 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -1437,6 +1437,7 @@ test_expect_success 'double dash "git checkout"' '
 	--guess Z
 	--no-guess Z
 	--no-... Z
+	--overlay Z
 	EOF
 '