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[PATCH 31/34] checkout: don't require a work tree when checking out into a new one

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
Nov 30, 2014, 08:24 UTC
Message-ID
<1417335899-27307-32-git-send-email-pclouds@gmail.com>
In-Reply-To
<1417335899-27307-1-git-send-email-pclouds@gmail.com>
From: Dennis Kaarsemaker <dennis@kaarsemaker.net>

For normal use cases, it does not make sense for 'checkout' to work on a bare repository, without a worktree. But "checkout --to" is an exception because it _creates_ a new worktree. Allow this option to run on bare repositories.

People who check out from a bare repository should remember that core.logallrefupdates is off by default and it should be turned back on. `--to` cannot do this automatically behind the user's back because some user may deliberately want no reflog.

For people interested in repository setup/discovery code, is_bare_repository_cfg (aka "core.bare") is unchanged by this patch, which means 'true' by default for bare repos. Fortunately when we get the repo through a linked checkout, is_bare_repository_cfg is never used. So all is still good.

[nd: commit message]
Signed-off-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/checkout.c     |  3 +++
 git.c                  |  2 +-
 t/t2025-checkout-to.sh | 15 +++++++++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 5dfdbda..8c5276c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1364,6 +1364,9 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 	if (opts.new_worktree_mode)
 		opts.new_worktree = NULL;
 
+	if (!opts.new_worktree)
+		setup_work_tree();
+
 	if (conflict_style) {
 		opts.merge = 1; /* implied */
 		git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
diff --git a/git.c b/git.c
index 18fbf79..160896a 100644
--- a/git.c
+++ b/git.c
@@ -383,7 +383,7 @@ static struct cmd_struct commands[] = {
 	{ "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE },
 	{ "check-mailmap", cmd_check_mailmap, RUN_SETUP },
 	{ "check-ref-format", cmd_check_ref_format },
-	{ "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
+	{ "checkout", cmd_checkout, RUN_SETUP },
 	{ "checkout-index", cmd_checkout_index,
 		RUN_SETUP | NEED_WORK_TREE},
 	{ "cherry", cmd_cherry, RUN_SETUP },
diff --git a/t/t2025-checkout-to.sh b/t/t2025-checkout-to.sh
index e2db078..4bd1df4 100755
--- a/t/t2025-checkout-to.sh
+++ b/t/t2025-checkout-to.sh
@@ -81,4 +81,19 @@ test_expect_success 'not die on re-checking out current branch' '
 	)
 '
 
+test_expect_success 'checkout --to from a bare repo' '
+	(
+		git clone --bare . bare &&
+		cd bare &&
+		git checkout --to ../there2 -b bare-master master
+	)
+'
+
+test_expect_success 'checkout from a bare repo without --to' '
+	(
+		cd bare &&
+		test_must_fail git checkout master
+	)
+'
+
 test_done
-- 
2.1.0.rc0.78.gc0d8480
Previous: Nguyễn Thái Ngọc DuyNext: Nguyễn Thái Ngọc Duy
Message 42 of 45 in “nd/multiple-work-trees reroll”
  1. 00/34 nd/multiple-work-trees rerollNguyễn Thái Ngọc Duy, Nov 30, 2014
  2. 01/34 path.c: make get_pathname() return strbuf instead of static bufferNguyễn Thái Ngọc Duy, Nov 30, 2014
  3. 02/34 path.c: make get_pathname() call sites return const char *Nguyễn Thái Ngọc Duy, Nov 30, 2014
  4. 03/34 git_snpath(): retire and replace with strbuf_git_path()Nguyễn Thái Ngọc Duy, Nov 30, 2014
  5. 04/34 path.c: rename vsnpath() to do_git_path()Nguyễn Thái Ngọc Duy, Nov 30, 2014
  6. 05/34 path.c: group git_path(), git_pathdup() and strbuf_git_path() togetherNguyễn Thái Ngọc Duy, Nov 30, 2014
  7. 06/34 git_path(): be aware of file relocation in $GIT_DIRNguyễn Thái Ngọc Duy, Nov 30, 2014
  8. 07/34 *.sh: respect $GIT_INDEX_FILENguyễn Thái Ngọc Duy, Nov 30, 2014
  9. 08/34 reflog: avoid constructing .lock path with git_pathNguyễn Thái Ngọc Duy, Nov 30, 2014
  10. 09/34 fast-import: use git_path() for accessing .git dir instead of get_git_dir()Nguyễn Thái Ngọc Duy, Nov 30, 2014
  11. 10/34 commit: use SEQ_DIR instead of hardcoding "sequencer"Nguyễn Thái Ngọc Duy, Nov 30, 2014
  12. 11/34 $GIT_COMMON_DIR: a new environment variableNguyễn Thái Ngọc Duy, Nov 30, 2014
  13. 12/34 git-sh-setup.sh: use rev-parse --git-path to get $GIT_DIR/objectsNguyễn Thái Ngọc Duy, Nov 30, 2014
  14. 13/34 *.sh: avoid hardcoding $GIT_DIR/hooks/...Nguyễn Thái Ngọc Duy, Nov 30, 2014
  15. 14/34 git-stash: avoid hardcoding $GIT_DIR/logs/....Nguyễn Thái Ngọc Duy, Nov 30, 2014
  16. 15/34 setup.c: convert is_git_directory() to use strbufNguyễn Thái Ngọc Duy, Nov 30, 2014
  17. 16/34 setup.c: detect $GIT_COMMON_DIR in is_git_directory()Nguyễn Thái Ngọc Duy, Nov 30, 2014
  18. 17/34 setup.c: convert check_repository_format_gently to use strbufNguyễn Thái Ngọc Duy, Nov 30, 2014
  19. 18/34 setup.c: detect $GIT_COMMON_DIR check_repository_format_gently()Nguyễn Thái Ngọc Duy, Nov 30, 2014
  20. 19/34 setup.c: support multi-checkout repo setupNguyễn Thái Ngọc Duy, Nov 30, 2014
  21. 20/34 wrapper.c: wrapper to open a file, fprintf then closeNguyễn Thái Ngọc Duy, Nov 30, 2014
  22. 21/34 use new wrapper write_file() for simple file writingNguyễn Thái Ngọc Duy, Nov 30, 2014
  23. 22/34 checkout: support checking out into a new working directoryNguyễn Thái Ngọc Duy, Nov 30, 2014
  24. 23/34 prune: strategies for linked checkoutsNguyễn Thái Ngọc Duy, Nov 30, 2014
  25. 24/34 checkout: reject if the branch is already checked out elsewhereNguyễn Thái Ngọc Duy, Nov 30, 2014
  26. Mark LevedahlNov 30, 2014
  27. Duy NguyenDec 1, 2014
  28. Junio C HamanoDec 1, 2014
  29. Mark LevedahlDec 2, 2014
  30. Duy NguyenDec 2, 2014
  31. Junio C HamanoDec 2, 2014
  32. Mark LevedahlDec 3, 2014
  33. Duy NguyenDec 3, 2014
  34. Junio C HamanoDec 3, 2014
  35. Duy NguyenDec 2, 2014
  36. 25/34 checkout: clean up half-prepared directories in --to modeNguyễn Thái Ngọc Duy, Nov 30, 2014
  37. 26/34 gc: style change -- no SP before closing parenthesisNguyễn Thái Ngọc Duy, Nov 30, 2014
  38. 27/34 gc: factor out gc.pruneexpire parsing codeNguyễn Thái Ngọc Duy, Nov 30, 2014
  39. 28/34 gc: support prune --worktreesNguyễn Thái Ngọc Duy, Nov 30, 2014
  40. 29/34 count-objects: report unused files in $GIT_DIR/worktrees/...Nguyễn Thái Ngọc Duy, Nov 30, 2014
  41. 30/34 git_path(): keep "info/sparse-checkout" per work-treeNguyễn Thái Ngọc Duy, Nov 30, 2014
  42. 31/34 checkout: don't require a work tree when checking out into a new oneNguyễn Thái Ngọc Duy, Nov 30, 2014
  43. 32/34 t2025: add a test to make sure grafts is working from a linked checkoutNguyễn Thái Ngọc Duy, Nov 30, 2014
  44. 33/34 checkout: do not fail if target is an empty directoryNguyễn Thái Ngọc Duy, Nov 30, 2014
  45. 34/34 git-common-dir: make "modules/" per-working-directory directoryNguyễn Thái Ngọc Duy, Nov 30, 2014

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