diff options
| -rw-r--r-- | read-tree.c | 20 | ||||
| -rwxr-xr-x | t/t1000-read-tree-m-3way.sh | 17 | ||||
| -rw-r--r-- | t/t1005-read-tree-m-2way-emu23.sh | 9 |
3 files changed, 31 insertions, 15 deletions
diff --git a/read-tree.c b/read-tree.c index f2a8bb5..ecd40cc 100644 --- a/read-tree.c +++ b/read-tree.c @@ -102,7 +102,7 @@ static void reject_merge(struct cache_entry *ce) die("Entry '%s' would be overwritten by merge. Cannot merge.", ce->name); } -static int merged_entry(struct cache_entry *merge, struct cache_entry *old, struct cache_entry **dst) +static int merged_entry_internal(struct cache_entry *merge, struct cache_entry *old, struct cache_entry **dst, int allow_dirty) { merge->ce_flags |= htons(CE_UPDATE); if (old) { @@ -115,7 +115,7 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old, stru */ if (same(old, merge)) { *merge = *old; - } else { + } else if (!allow_dirty) { verify_uptodate(old); } } @@ -124,6 +124,16 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old, stru return 1; } +static int merged_entry_allow_dirty(struct cache_entry *merge, struct cache_entry *old, struct cache_entry **dst) +{ + return merged_entry_internal(merge, old, dst, 1); +} + +static int merged_entry(struct cache_entry *merge, struct cache_entry *old, struct cache_entry **dst) +{ + return merged_entry_internal(merge, old, dst, 0); +} + static int deleted_entry(struct cache_entry *ce, struct cache_entry *old, struct cache_entry **dst) { if (old) @@ -140,6 +150,12 @@ static int threeway_merge(struct cache_entry *stages[4], struct cache_entry **ds struct cache_entry *merge; int count; + /* #5ALT */ + if (!a && b && c && same(b, c)) { + if (old && !same(b, old)) + return -1; + return merged_entry_allow_dirty(b, old, dst); + } /* * If we have an entry in the index cache ("old"), then we want * to make sure that it matches any entries in stage 2 ("first diff --git a/t/t1000-read-tree-m-3way.sh b/t/t1000-read-tree-m-3way.sh index c435887..92833fe 100755 --- a/t/t1000-read-tree-m-3way.sh +++ b/t/t1000-read-tree-m-3way.sh @@ -75,7 +75,8 @@ In addition: . ../lib-read-tree-m-3way.sh ################################################################ -# This is the "no trivial merge unless all three exists" table. +# Trivial "majority when 3 stages exist" merge plus #5ALT trivial +# merge. cat >expected <<\EOF 100644 X 2 AA @@ -88,8 +89,7 @@ cat >expected <<\EOF 100644 X 3 DM 100644 X 1 DN 100644 X 3 DN -100644 X 2 LL -100644 X 3 LL +100644 X 0 LL 100644 X 1 MD 100644 X 2 MD 100644 X 1 MM @@ -289,23 +289,24 @@ test_expect_failure \ git-read-tree -m $tree_O $tree_A $tree_B" test_expect_success \ - '5 - must match and be up-to-date in !O && A && B && A==B case.' \ + '5 - must match in !O && A && B && A==B case.' \ "rm -f .git/index LL && cp .orig-A/LL LL && git-update-cache --add LL && git-read-tree -m $tree_O $tree_A $tree_B && check_result" -test_expect_failure \ - '5 (fail) - must match and be up-to-date in !O && A && B && A==B case.' \ +test_expect_success \ + '5 - must match in !O && A && B && A==B case.' \ "rm -f .git/index LL && cp .orig-A/LL LL && git-update-cache --add LL && echo extra >>LL && - git-read-tree -m $tree_O $tree_A $tree_B" + git-read-tree -m $tree_O $tree_A $tree_B && + check_result" test_expect_failure \ - '5 (fail) - must match and be up-to-date in !O && A && B && A==B case.' \ + '5 (fail) - must match A in !O && A && B && A==B case.' \ "rm -f .git/index LL && cp .orig-A/LL LL && echo extra >>LL && diff --git a/t/t1005-read-tree-m-2way-emu23.sh b/t/t1005-read-tree-m-2way-emu23.sh index 3345c9d..495642e 100644 --- a/t/t1005-read-tree-m-2way-emu23.sh +++ b/t/t1005-read-tree-m-2way-emu23.sh @@ -117,9 +117,8 @@ test_expect_success \ check_cache_at yomin dirty' # "read-tree -m H I+H M" where !H && M && (I+H) == M, so this should -# succeed (even the entry is clean), but without #5ALT this does not -# work. -: test_expect_success \ +# succeed (even the entry is clean), now thanks to #5ALT. +test_expect_success \ '6 - local addition already has the same.' \ 'rm -f .git/index && git-update-cache --add frotz && @@ -129,8 +128,8 @@ test_expect_success \ check_cache_at frotz clean' # Exactly the same pattern as above but with dirty cache. This also -# should succeed, but without #5ALT it does not. -: test_expect_success \ +# should succeed, now thanks to #5ALT. +test_expect_success \ '7 - local addition already has the same.' \ 'rm -f .git/index && echo frotz >frotz && |