Revert "Merge branch 'en/merge-recursive'"

As the band-aid to merge-recursive seems to regress complex merges in an
unpleasant way.  The merge-recursive implementation needs to be rewritten
in such a way that it resolves renames and D/F conflicts entirely in-core
and not to touch working tree at all while doing so. But in the meantime,
this reverts commit ac9666f84 that merged the topic in its entirety.

diff --git a/merge-recursive.c b/merge-recursive.c
index 07ad1a3be4432928872c05859e0fffda026c502f..db9ba19ddf94fec3a5cfff450b35f5bb7b46c35e 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -341,11 +341,10 @@ static void make_room_for_directories_of_df_conflicts(struct merge_options *o,
         * make room for the corresponding directory.  Such paths will
         * later be processed in process_df_entry() at the end.  If
         * the corresponding directory ends up being removed by the
-        * merge, then the file will be reinstated at that time
-        * (albeit with a different timestamp!); otherwise, if the
-        * file is not supposed to be removed by the merge, the
-        * contents of the file will be placed in another unique
-        * filename.
+        * merge, then the file will be reinstated at that time;
+        * otherwise, if the file is not supposed to be removed by the
+        * merge, the contents of the file will be placed in another
+        * unique filename.
         *
         * NOTE: This function relies on the fact that entries for a
         * D/F conflict will appear adjacent in the index, with the
@@ -356,13 +355,6 @@ static void make_room_for_directories_of_df_conflicts(struct merge_options *o,
        int last_len = 0;
        int i;
 
-       /*
-        * Do not do any of this crazyness during the recursive; we don't
-        * even write anything to the working tree!
-        */
-       if (o->call_depth)
-               return;
-
        for (i = 0; i < entries->nr; i++) {
                const char *path = entries->items[i].string;
                int len = strlen(path);
@@ -1265,13 +1257,9 @@ static int merge_content(struct merge_options *o,
        }
 
        if (mfi.clean && !df_conflict_remains &&
-           sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode &&
-           !o->call_depth && !lstat(path, &st)) {
+           sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode)
                output(o, 3, "Skipped %s (merged same as existing)", path);
-               add_cacheinfo(mfi.mode, mfi.sha, path,
-                             0 /*stage*/, 1 /*refresh*/, 0 /*options*/);
-               return mfi.clean;
-       } else
+       else
                output(o, 2, "Auto-merging %s", path);
 
        if (!mfi.clean) {

diff --git a/t/t6022-merge-rename.sh b/t/t6022-merge-rename.sh
index 5f3b604fd99b22c73cfdebf0f1cf13539e1af3e4..1ed259d864b4ef4c8c7060fa5f22634a25c8e032 100755 (executable)
--- a/t/t6022-merge-rename.sh
+++ b/t/t6022-merge-rename.sh
@@ -609,67 +609,4 @@ test_expect_success 'check handling of differently renamed file with D/F conflic
        ! test -f original
 '
 
-test_expect_success 'setup avoid unnecessary update, normal rename' '
-       git reset --hard &&
-       git checkout --orphan avoid-unnecessary-update-1 &&
-       git rm -rf . &&
-       git clean -fdqx &&
-
-       printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >original &&
-       git add -A &&
-       git commit -m "Common commmit" &&
-
-       git mv original rename &&
-       echo 11 >>rename &&
-       git add -u &&
-       git commit -m "Renamed and modified" &&
-
-       git checkout -b merge-branch-1 HEAD~1 &&
-       echo "random content" >random-file &&
-       git add -A &&
-       git commit -m "Random, unrelated changes"
-'
-
-test_expect_success 'avoid unnecessary update, normal rename' '
-       git checkout -q avoid-unnecessary-update-1^0 &&
-       test-chmtime =1000000000 rename &&
-       test-chmtime -v +0 rename >expect &&
-       git merge merge-branch-1 &&
-       test-chmtime -v +0 rename >actual &&
-       test_cmp expect actual # "rename" should have stayed intact
-'
-
-test_expect_success 'setup to test avoiding unnecessary update, with D/F conflict' '
-       git reset --hard &&
-       git checkout --orphan avoid-unnecessary-update-2 &&
-       git rm -rf . &&
-       git clean -fdqx &&
-
-       mkdir df &&
-       printf "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" >df/file &&
-       git add -A &&
-       git commit -m "Common commmit" &&
-
-       git mv df/file temp &&
-       rm -rf df &&
-       git mv temp df &&
-       echo 11 >>df &&
-       git add -u &&
-       git commit -m "Renamed and modified" &&
-
-       git checkout -b merge-branch-2 HEAD~1 &&
-       >unrelated-change &&
-       git add unrelated-change &&
-       git commit -m "Only unrelated changes"
-'
-
-test_expect_failure 'avoid unnecessary update, with D/F conflict' '
-       git checkout -q avoid-unnecessary-update-2^0 &&
-       test-chmtime =1000000000 df &&
-       test-chmtime -v +0 df >expect &&
-       git merge merge-branch-2 &&
-       test-chmtime -v +0 df >actual &&
-       test_cmp expect actual # "df" should have stayed intact
-'
-
 test_done