[PATCH v2 5/9] symlinks: do not include startup_info->original_cwd in dir removal

["Elijah Newren via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Elijah Newren <newren@xxxxxxxxx>

symlinks has a pair of schedule_dir_for_removal() and
remove_scheduled_dirs() functions that ensure that directories made
empty by removing other files also themselves get removed.  However, we
want to exclude startup_info->original_cwd and leave it around.  This
avoids the user getting confused by subsequent git commands (and non-git
commands) that would otherwise report confusing messages about being
unable to read the current working directory.

Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
 symlinks.c           |  8 +++++++-
 t/t2501-cwd-empty.sh | 12 ++++++------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/symlinks.c b/symlinks.c
index 5232d02020c..c667baa949b 100644
--- a/symlinks.c
+++ b/symlinks.c
@@ -279,7 +279,9 @@ static void do_remove_scheduled_dirs(int new_len)
 {
 	while (removal.len > new_len) {
 		removal.buf[removal.len] = '\0';
-		if (rmdir(removal.buf))
+		if ((startup_info->original_cwd &&
+		     !strcmp(removal.buf, startup_info->original_cwd)) ||
+		    rmdir(removal.buf))
 			break;
 		do {
 			removal.len--;
@@ -293,6 +295,10 @@ void schedule_dir_for_removal(const char *name, int len)
 {
 	int match_len, last_slash, i, previous_slash;
 
+	if (startup_info->original_cwd &&
+	    !strcmp(name, startup_info->original_cwd))
+		return;	/* Do not remove the current working directory */
+
 	match_len = last_slash = i =
 		longest_path_match(name, len, removal.buf, removal.len,
 				   &previous_slash);
diff --git a/t/t2501-cwd-empty.sh b/t/t2501-cwd-empty.sh
index 526d8ec2ee3..b92e1a9bb16 100755
--- a/t/t2501-cwd-empty.sh
+++ b/t/t2501-cwd-empty.sh
@@ -24,7 +24,7 @@ test_expect_success setup '
 	git commit -m dirORfile
 '
 
-test_expect_failure 'checkout does not clean cwd incidentally' '
+test_expect_success 'checkout does not clean cwd incidentally' '
 	git checkout foo/bar/baz &&
 	test_path_is_dir foo/bar &&
 
@@ -53,7 +53,7 @@ test_expect_success 'checkout fails if cwd needs to be removed' '
 	test_path_is_dir dirORfile
 '
 
-test_expect_failure 'reset --hard does not clean cwd incidentally' '
+test_expect_success 'reset --hard does not clean cwd incidentally' '
 	git checkout foo/bar/baz &&
 	test_path_is_dir foo/bar &&
 
@@ -82,7 +82,7 @@ test_expect_success 'reset --hard fails if cwd needs to be removed' '
 	test_path_is_dir dirORfile
 '
 
-test_expect_failure 'merge does not remove cwd incidentally' '
+test_expect_success 'merge does not remove cwd incidentally' '
 	git checkout foo/bar/baz &&
 	test_when_finished "git clean -fdx" &&
 
@@ -109,7 +109,7 @@ test_expect_success 'merge fails if cwd needs to be removed' '
 	test_path_is_dir dirORfile
 '
 
-test_expect_failure 'cherry-pick does not remove cwd incidentally' '
+test_expect_success 'cherry-pick does not remove cwd incidentally' '
 	git checkout foo/bar/baz &&
 	test_when_finished "git clean -fdx" &&
 
@@ -136,7 +136,7 @@ test_expect_success 'cherry-pick fails if cwd needs to be removed' '
 	test_path_is_dir dirORfile
 '
 
-test_expect_failure 'rebase does not remove cwd incidentally' '
+test_expect_success 'rebase does not remove cwd incidentally' '
 	git checkout foo/bar/baz &&
 	test_when_finished "git clean -fdx" &&
 
@@ -163,7 +163,7 @@ test_expect_success 'rebase fails if cwd needs to be removed' '
 	test_path_is_dir dirORfile
 '
 
-test_expect_failure 'revert does not remove cwd incidentally' '
+test_expect_success 'revert does not remove cwd incidentally' '
 	git checkout foo/bar/baz &&
 	test_when_finished "git clean -fdx" &&
 
-- 
gitgitgadget