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Merge branch 'en/merge-recursive'

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* en/merge-recursive:
  merge-recursive: tweak magic band-aid
  merge-recursive: When we detect we can skip an update, actually skip it
  t6022: New test checking for unnecessary updates of files in D/F conflicts
  t6022: New test checking for unnecessary updates of renamed+modified files
This commit is contained in:
Junio C Hamano 2011-04-28 14:11:35 -07:00
commit ac9666f84a
2 changed files with 81 additions and 6 deletions
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24
merge-recursive.c
View file

@ -344,10 +344,11 @@ 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;
* 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
* (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.
*
* NOTE: This function relies on the fact that entries for a
* D/F conflict will appear adjacent in the index, with the
@ -358,6 +359,13 @@ 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);
@ -1260,9 +1268,13 @@ static int merge_content(struct merge_options *o,
}
if (mfi.clean && !df_conflict_remains &&
sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode)
sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode &&
!o->call_depth && !lstat(path, &st)) {
output(o, 3, "Skipped %s (merged same as existing)", path);
else
add_cacheinfo(mfi.mode, mfi.sha, path,
0 /*stage*/, 1 /*refresh*/, 0 /*options*/);
return mfi.clean;
} else
output(o, 2, "Auto-merging %s", path);
if (!mfi.clean) {

63
t/t6022-merge-rename.sh
View file

@ -609,4 +609,67 @@ 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