merge-recursive: fix remaining directory rename + dirty overwrite cases

Reviewed-by: Stefan Beller <sbeller@google.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Elijah Newren committed Apr 19, 2018 at 10:58 UTC 18797a3b10e4077473740b953651b0032828d0fb
2 files changed +26 -7
merge-recursive.c
+22 -3
@@ -1324,11 +1324,22 @@ static int handle_file(struct merge_options *o,
1324
1325 add = filespec_from_entry(&other, dst_entry, stage ^ 1);
1326 if (add) {
1327 + int ren_src_was_dirty = was_dirty(o, rename->path);
1328 char *add_name = unique_path(o, rename->path, other_branch);
1329 if (update_file(o, 0, &add->oid, add->mode, add_name))
1330 return -1;
1331
1331 - remove_file(o, 0, rename->path, 0);
1332 + if (ren_src_was_dirty) {
1333 + output(o, 1, _("Refusing to lose dirty file at %s"),
1334 + rename->path);
1335 + }
1336 + /*
1337 + * Because the double negatives somehow keep confusing me...
1338 + * 1) update_wd iff !ren_src_was_dirty.
1339 + * 2) no_wd iff !update_wd
1340 + * 3) so, no_wd == !!ren_src_was_dirty == ren_src_was_dirty
1341 + */
1342 + remove_file(o, 0, rename->path, ren_src_was_dirty);
1343 dst_name = unique_path(o, rename->path, cur_branch);
1344 } else {
1345 if (dir_in_way(rename->path, !o->call_depth, 0)) {
@@ -1466,7 +1477,10 @@ static int conflict_rename_rename_2to1(struct merge_options *o,
1477 char *new_path2 = unique_path(o, path, ci->branch2);
1478 output(o, 1, _("Renaming %s to %s and %s to %s instead"),
1479 a->path, new_path1, b->path, new_path2);
1469 - if (would_lose_untracked(path))
1480 + if (was_dirty(o, path))
1481 + output(o, 1, _("Refusing to lose dirty file at %s"),
1482 + path);
1483 + else if (would_lose_untracked(path))
1484 /*
1485 * Only way we get here is if both renames were from
1486 * a directory rename AND user had an untracked file
@@ -2075,6 +2089,7 @@ static void apply_directory_rename_modifications(struct merge_options *o,
2089 {
2090 struct string_list_item *item;
2091 int stage = (tree == a_tree ? 2 : 3);
2092 + int update_wd;
2093
2094 /*
2095 * In all cases where we can do directory rename detection,
@@ -2085,7 +2100,11 @@ static void apply_directory_rename_modifications(struct merge_options *o,
2100 * saying the file would have been overwritten), but it might
2101 * be dirty, though.
2102 */
2088 - remove_file(o, 1, pair->two->path, 0 /* no_wd */);
2103 + update_wd = !was_dirty(o, pair->two->path);
2104 + if (!update_wd)
2105 + output(o, 1, _("Refusing to lose dirty file at %s"),
2106 + pair->two->path);
2107 + remove_file(o, 1, pair->two->path, !update_wd);
2108
2109 /* Find or create a new re->dst_entry */
2110 item = string_list_lookup(entries, new_path);
t/t6043-merge-rename-directories.sh
+4 -4
@@ -3370,7 +3370,7 @@ test_expect_success '11b-setup: Avoid losing dirty file involved in directory re
3370 )
3371 '
3372
3373 -test_expect_failure '11b-check: Avoid losing dirty file involved in directory rename' '
3373 +test_expect_success '11b-check: Avoid losing dirty file involved in directory rename' '
3374 (
3375 cd 11b &&
3376
@@ -3512,7 +3512,7 @@ test_expect_success '11d-setup: Avoid losing not-uptodate with rename + D/F conf
3512 )
3513 '
3514
3515 -test_expect_failure '11d-check: Avoid losing not-uptodate with rename + D/F conflict' '
3515 +test_expect_success '11d-check: Avoid losing not-uptodate with rename + D/F conflict' '
3516 (
3517 cd 11d &&
3518
@@ -3591,7 +3591,7 @@ test_expect_success '11e-setup: Avoid deleting not-uptodate with dir rename/rena
3591 )
3592 '
3593
3594 -test_expect_failure '11e-check: Avoid deleting not-uptodate with dir rename/rename(1to2)/add' '
3594 +test_expect_success '11e-check: Avoid deleting not-uptodate with dir rename/rename(1to2)/add' '
3595 (
3596 cd 11e &&
3597
@@ -3667,7 +3667,7 @@ test_expect_success '11f-setup: Avoid deleting not-uptodate with dir rename/rena
3667 )
3668 '
3669
3670 -test_expect_failure '11f-check: Avoid deleting not-uptodate with dir rename/rename(2to1)' '
3670 +test_expect_success '11f-check: Avoid deleting not-uptodate with dir rename/rename(2to1)' '
3671 (
3672 cd 11f &&
3673