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[PATCH v3 33/33] merge-recursive: ensure we write updates for directory-renamed file

From
Elijah Newren <newren@gmail.com>
Date
Nov 21, 2017, 08:00 UTC
Message-ID
<20171121080059.32304-34-newren@gmail.com>
In-Reply-To
<20171121080059.32304-1-newren@gmail.com>

When a file is present in HEAD before the merge and the other side of the merge does not modify that file, we try to avoid re-writing the file and making it stat-dirty. However, when a file is present in HEAD before the merge and was in a directory that was renamed by the other side of the merge, we have to move the file to a new location and re-write it. Update the code that checks whether we can skip the update to also work in the presence of directory renames.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 merge-recursive.c                   | 4 +---
 t/t6043-merge-rename-directories.sh | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index 65cc997e93..9349eb4391 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -2744,7 +2744,6 @@ static int merge_content(struct merge_options *o,
 
 	if (mfi.clean && !df_conflict_remains &&
 	    oid_eq(&mfi.oid, a_oid) && mfi.mode == a_mode) {
-		int path_renamed_outside_HEAD;
 		output(o, 3, _("Skipped %s (merged same as existing)"), path);
 		/*
 		 * The content merge resulted in the same file contents we
@@ -2752,8 +2751,7 @@ static int merge_content(struct merge_options *o,
 		 * are recorded at the correct path (which may not be true
 		 * if the merge involves a rename).
 		 */
-		path_renamed_outside_HEAD = !path2 || !strcmp(path, path2);
-		if (!path_renamed_outside_HEAD) {
+		if (was_tracked(path)) {
 			add_cacheinfo(o, mfi.mode, &mfi.oid, path,
 				      0, (!o->call_depth), 0);
 			return mfi.clean;
diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh
index 119d7f5d70..f1538087ca 100755
--- a/t/t6043-merge-rename-directories.sh
+++ b/t/t6043-merge-rename-directories.sh
@@ -3711,7 +3711,7 @@ test_expect_success '12b-setup: Moving one directory hierarchy into another' '
 	)
 '
 
-test_expect_failure '12b-check: Moving one directory hierarchy into another' '
+test_expect_success '12b-check: Moving one directory hierarchy into another' '
 	(
 		cd 12b &&
 

-- 
2.15.0.309.g62ce55426d
Previous: Elijah NewrenNext: Elijah Newren
Message 31 of 48 in “Add directory rename detection to git”
  1. 00/33 Add directory rename detection to gitElijah Newren, Nov 21, 2017
  2. 10/33 directory rename detection: more involved edge/corner testcasesElijah Newren, Nov 21, 2017
  3. 21/33 merge-recursive: add get_directory_renames()Elijah Newren, Nov 21, 2017
  4. Johannes SchindelinNov 26, 2017
  5. Elijah NewrenNov 26, 2017
  6. 06/33 directory rename detection: testcases to avoid taking detection too farElijah Newren, Nov 21, 2017
  7. 15/33 merge-recursive: move the get_renames() functionElijah Newren, Nov 21, 2017
  8. 29/33 merge-recursive: fix overwriting dirty files involved in renamesElijah Newren, Nov 21, 2017
  9. 03/33 merge-recursive: add explanation for src_entry and dst_entryElijah Newren, Nov 21, 2017
  10. 22/33 merge-recursive: check for directory level conflictsElijah Newren, Nov 21, 2017
  11. Stefan BellerNov 22, 2017
  12. 25/33 merge-recursive: check for file level conflicts then get new nameElijah Newren, Nov 21, 2017
  13. Stefan BellerNov 22, 2017
  14. 24/33 merge-recursive: add computation of collisions due to dir rename & mergingElijah Newren, Nov 21, 2017
  15. 04/33 directory rename detection: basic testcasesElijah Newren, Nov 21, 2017
  16. 05/33 directory rename detection: directory splitting testcasesElijah Newren, Nov 21, 2017
  17. 20/33 merge-recursive: add a new hashmap for storing directory renamesElijah Newren, Nov 21, 2017
  18. 18/33 merge-recursive: make !o->detect_rename codepath more obviousElijah Newren, Nov 21, 2017
  19. 02/33 merge-recursive: fix logic ordering issueElijah Newren, Nov 21, 2017
  20. 19/33 merge-recursive: split out code for determining diff_filepairsElijah Newren, Nov 21, 2017
  21. 31/33 directory rename detection: new testcases showcasing a pair of bugsElijah Newren, Nov 21, 2017
  22. 11/33 directory rename detection: testcases exploring possibly suboptimal mergesElijah Newren, Nov 21, 2017
  23. Stefan BellerNov 22, 2017
  24. 23/33 merge-recursive: add a new hashmap for storing file collisionsElijah Newren, Nov 21, 2017
  25. 09/33 directory rename detection: testcases checking which side did the renameElijah Newren, Nov 21, 2017
  26. 16/33 merge-recursive: introduce new functions to handle rename logicElijah Newren, Nov 21, 2017
  27. 13/33 directory rename detection: tests for handling overwriting untracked filesElijah Newren, Nov 21, 2017
  28. 26/33 merge-recursive: when comparing files, don't include treesElijah Newren, Nov 21, 2017
  29. 28/33 merge-recursive: avoid clobbering untracked files with directory renamesElijah Newren, Nov 21, 2017
  30. 27/33 merge-recursive: apply necessary modifications for directory renamesElijah Newren, Nov 21, 2017
  31. 33/33 merge-recursive: ensure we write updates for directory-renamed fileElijah Newren, Nov 21, 2017
  32. 32/33 merge-recursive: avoid spurious rename/rename conflict from dir renamesElijah Newren, Nov 21, 2017
  33. 14/33 directory rename detection: tests for handling overwriting dirty filesElijah Newren, Nov 21, 2017
  34. 12/33 directory rename detection: miscellaneous testcases to complete coverageElijah Newren, Nov 21, 2017
  35. 17/33 merge-recursive: fix leaks of allocated renames and diff_filepairsElijah Newren, Nov 21, 2017
  36. 08/33 directory rename detection: files/directories in the way of some renamesElijah Newren, Nov 21, 2017
  37. 07/33 directory rename detection: partially renamed directory testcase/discussionElijah Newren, Nov 21, 2017
  38. 01/33 Tighten and correct a few testcases for merging and cherry-pickingElijah Newren, Nov 21, 2017
  39. 30/33 merge-recursive: fix remaining directory rename + dirty overwrite casesElijah Newren, Nov 21, 2017
  40. Stefan BellerNov 22, 2017
  41. Elijah NewrenNov 22, 2017
  42. Junio C HamanoNov 22, 2017
  43. Stefan BellerNov 22, 2017
  44. Elijah NewrenNov 23, 2017
  45. Adam DinwoodieNov 23, 2017
  46. Elijah NewrenNov 23, 2017
  47. Elijah NewrenNov 24, 2017
  48. Elijah NewrenNov 24, 2017

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