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-rw-r--r--builtin-update-index.c13
-rw-r--r--cache.h1
-rwxr-xr-xt/t2030-unresolve-info.sh7
3 files changed, 20 insertions, 1 deletions
diff --git a/builtin-update-index.c b/builtin-update-index.c
index a19e78603..750db163b 100644
--- a/builtin-update-index.c
+++ b/builtin-update-index.c
@@ -433,7 +433,18 @@ static int unresolve_one(const char *path)
/* See if there is such entry in the index. */
pos = cache_name_pos(path, namelen);
- if (pos < 0) {
+ if (0 <= pos) {
+ /* already merged */
+ pos = unmerge_cache_entry_at(pos);
+ if (pos < active_nr) {
+ struct cache_entry *ce = active_cache[pos];
+ if (ce_stage(ce) &&
+ ce_namelen(ce) == namelen &&
+ !memcmp(ce->name, path, namelen))
+ return 0;
+ }
+ /* no resolve-undo information; fall back */
+ } else {
/* If there isn't, either it is unmerged, or
* resolved as "removed" by mistake. We do not
* want to do anything in the former case.
diff --git a/cache.h b/cache.h
index f479f0919..97b4a74d9 100644
--- a/cache.h
+++ b/cache.h
@@ -338,6 +338,7 @@ static inline void remove_name_hash(struct cache_entry *ce)
#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
+#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
#endif
diff --git a/t/t2030-unresolve-info.sh b/t/t2030-unresolve-info.sh
index ea65f391c..28e2eb1ce 100755
--- a/t/t2030-unresolve-info.sh
+++ b/t/t2030-unresolve-info.sh
@@ -108,4 +108,11 @@ test_expect_success 'add records checkout -m undoes' '
grep "^++<<<<<<<" actual
'
+test_expect_success 'unmerge with plumbing' '
+ prime_resolve_undo &&
+ git update-index --unresolve file &&
+ git ls-files -u >actual &&
+ test $(wc -l <actual) = 3
+'
+
test_done