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[PATCHv6 28/31] merge-recursive: fix remaining directory rename + dirty overwrite cases

From
Elijah Newren <newren@gmail.com>
Date
Jan 5, 2018, 20:27 UTC
Message-ID
<20180105202711.24311-29-newren@gmail.com>
In-Reply-To
<20180105202711.24311-1-newren@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
---
 merge-recursive.c                   | 26 +++++++++++++++++++++++---
 t/t6043-merge-rename-directories.sh |  8 ++++----
 2 files changed, 27 insertions(+), 7 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index 2b8a5ca03..fe42cabad 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1311,11 +1311,23 @@ static int handle_file(struct merge_options *o,
 
 	add = filespec_from_entry(&other, dst_entry, stage ^ 1);
 	if (add) {
+		int ren_src_was_dirty = was_dirty(o, rename->path);
 		char *add_name = unique_path(o, rename->path, other_branch);
 		if (update_file(o, 0, &add->oid, add->mode, add_name))
 			return -1;
 
-		remove_file(o, 0, rename->path, 0);
+		if (ren_src_was_dirty) {
+			output(o, 1, _("Refusing to lose dirty file at %s"),
+			       rename->path);
+		}
+		/*
+		 * Stupid double negatives in remove_file; it somehow manages
+		 * to repeatedly mess me up.  So, just for myself:
+		 *    1) update_wd iff !ren_src_was_dirty.
+		 *    2) no_wd iff !update_wd
+		 *    3) so, no_wd == !!ren_src_was_dirty == ren_src_was_dirty
+		 */
+		remove_file(o, 0, rename->path, ren_src_was_dirty);
 		dst_name = unique_path(o, rename->path, cur_branch);
 	} else {
 		if (dir_in_way(rename->path, !o->call_depth, 0)) {
@@ -1453,7 +1465,10 @@ static int conflict_rename_rename_2to1(struct merge_options *o,
 		char *new_path2 = unique_path(o, path, ci->branch2);
 		output(o, 1, _("Renaming %s to %s and %s to %s instead"),
 		       a->path, new_path1, b->path, new_path2);
-		if (would_lose_untracked(path))
+		if (was_dirty(o, path))
+			output(o, 1, _("Refusing to lose dirty file at %s"),
+			       path);
+		else if (would_lose_untracked(path))
 			/*
 			 * Only way we get here is if both renames were from
 			 * a directory rename AND user had an untracked file
@@ -2033,6 +2048,7 @@ static void apply_directory_rename_modifications(struct merge_options *o,
 {
 	struct string_list_item *item;
 	int stage = (tree == a_tree ? 2 : 3);
+	int update_wd;
 
 	/*
 	 * In all cases where we can do directory rename detection,
@@ -2043,7 +2059,11 @@ static void apply_directory_rename_modifications(struct merge_options *o,
 	 * saying the file would have been overwritten), but it might
 	 * be dirty, though.
 	 */
-	remove_file(o, 1, pair->two->path, 0 /* no_wd */);
+	update_wd = !was_dirty(o, pair->two->path);
+	if (!update_wd)
+		output(o, 1, _("Refusing to lose dirty file at %s"),
+		       pair->two->path);
+	remove_file(o, 1, pair->two->path, !update_wd);
 
 	/* Find or create a new re->dst_entry */
 	item = string_list_lookup(entries, new_path);
diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh
index dd0a037ec..003a65b1b 100755
--- a/t/t6043-merge-rename-directories.sh
+++ b/t/t6043-merge-rename-directories.sh
@@ -3346,7 +3346,7 @@ test_expect_success '11b-setup: Avoid losing dirty file involved in directory re
 	)
 '
 
-test_expect_failure '11b-check: Avoid losing dirty file involved in directory rename' '
+test_expect_success '11b-check: Avoid losing dirty file involved in directory rename' '
 	(
 		cd 11b &&
 
@@ -3488,7 +3488,7 @@ test_expect_success '11d-setup: Avoid losing not-uptodate with rename + D/F conf
 	)
 '
 
-test_expect_failure '11d-check: Avoid losing not-uptodate with rename + D/F conflict' '
+test_expect_success '11d-check: Avoid losing not-uptodate with rename + D/F conflict' '
 	(
 		cd 11d &&
 
@@ -3567,7 +3567,7 @@ test_expect_success '11e-setup: Avoid deleting not-uptodate with dir rename/rena
 	)
 '
 
-test_expect_failure '11e-check: Avoid deleting not-uptodate with dir rename/rename(1to2)/add' '
+test_expect_success '11e-check: Avoid deleting not-uptodate with dir rename/rename(1to2)/add' '
 	(
 		cd 11e &&
 
@@ -3643,7 +3643,7 @@ test_expect_success '11f-setup: Avoid deleting not-uptodate with dir rename/rena
 	)
 '
 
-test_expect_failure '11f-check: Avoid deleting not-uptodate with dir rename/rename(2to1)' '
+test_expect_success '11f-check: Avoid deleting not-uptodate with dir rename/rename(2to1)' '
 	(
 		cd 11f &&
 
-- 
2.14.2
Previous: Elijah NewrenNext: Elijah Newren
Message 12 of 34 in “[PATCHv6 00/31] Add directory rename detection to git”
  1. Elijah NewrenJan 5, 2018
  2. 01/31 directory rename detection: basic testcasesElijah Newren, Jan 5, 2018
  3. 07/31 directory rename detection: more involved edge/corner testcasesElijah Newren, Jan 5, 2018
  4. 08/31 directory rename detection: testcases exploring possibly suboptimal mergesElijah Newren, Jan 5, 2018
  5. 05/31 directory rename detection: files/directories in the way of some renamesElijah Newren, Jan 5, 2018
  6. 15/31 merge-recursive: make !o->detect_rename codepath more obviousElijah Newren, Jan 5, 2018
  7. 17/31 merge-recursive: add a new hashmap for storing directory renamesElijah Newren, Jan 5, 2018
  8. 19/31 merge-recursive: add get_directory_renames()Elijah Newren, Jan 5, 2018
  9. 18/31 merge-recursive: make a helper function for cleanup for handle_renamesElijah Newren, Jan 5, 2018
  10. 23/31 merge-recursive: check for file level conflicts then get new nameElijah Newren, Jan 5, 2018
  11. 25/31 merge-recursive: apply necessary modifications for directory renamesElijah Newren, Jan 5, 2018
  12. 28/31 merge-recursive: fix remaining directory rename + dirty overwrite casesElijah Newren, Jan 5, 2018
  13. 30/31 merge-recursive: avoid spurious rename/rename conflict from dir renamesElijah Newren, Jan 5, 2018
  14. 29/31 directory rename detection: new testcases showcasing a pair of bugsElijah Newren, Jan 5, 2018
  15. 31/31 merge-recursive: ensure we write updates for directory-renamed fileElijah Newren, Jan 5, 2018
  16. 26/31 merge-recursive: avoid clobbering untracked files with directory renamesElijah Newren, Jan 5, 2018
  17. 27/31 merge-recursive: fix overwriting dirty files involved in renamesElijah Newren, Jan 5, 2018
  18. 24/31 merge-recursive: when comparing files, don't include treesElijah Newren, Jan 5, 2018
  19. 22/31 merge-recursive: add computation of collisions due to dir rename & mergingElijah Newren, Jan 5, 2018
  20. 20/31 merge-recursive: check for directory level conflictsElijah Newren, Jan 5, 2018
  21. 21/31 merge-recursive: add a new hashmap for storing file collisionsElijah Newren, Jan 5, 2018
  22. 10/31 directory rename detection: tests for handling overwriting untracked filesElijah Newren, Jan 5, 2018
  23. 16/31 merge-recursive: split out code for determining diff_filepairsElijah Newren, Jan 5, 2018
  24. 06/31 directory rename detection: testcases checking which side did the renameElijah Newren, Jan 5, 2018
  25. 14/31 merge-recursive: fix leaks of allocated renames and diff_filepairsElijah Newren, Jan 5, 2018
  26. 09/31 directory rename detection: miscellaneous testcases to complete coverageElijah Newren, Jan 5, 2018
  27. 13/31 merge-recursive: introduce new functions to handle rename logicElijah Newren, Jan 5, 2018
  28. 02/31 directory rename detection: directory splitting testcasesElijah Newren, Jan 5, 2018
  29. 11/31 directory rename detection: tests for handling overwriting dirty filesElijah Newren, Jan 5, 2018
  30. 12/31 merge-recursive: move the get_renames() functionElijah Newren, Jan 5, 2018
  31. 04/31 directory rename detection: partially renamed directory testcase/discussionElijah Newren, Jan 5, 2018
  32. 03/31 directory rename detection: testcases to avoid taking detection too farElijah Newren, Jan 5, 2018
  33. SZEDER GáborJan 26, 2018
  34. Elijah NewrenJan 26, 2018

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