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-rw-r--r--unpack-trees.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/unpack-trees.c b/unpack-trees.c
index bf7d8f6c5..95d3413ae 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -521,6 +521,22 @@ static int verify_clean_subdirectory(struct cache_entry *ce, const char *action,
}
/*
+ * This gets called when there was no index entry for the tree entry 'dst',
+ * but we found a file in the working tree that 'lstat()' said was fine,
+ * and we're on a case-insensitive filesystem.
+ *
+ * See if we can find a case-insensitive match in the index that also
+ * matches the stat information, and assume it's that other file!
+ */
+static int icase_exists(struct unpack_trees_options *o, struct cache_entry *dst, struct stat *st)
+{
+ struct cache_entry *src;
+
+ src = index_name_exists(o->src_index, dst->name, ce_namelen(dst), 1);
+ return src && !ie_match_stat(o->src_index, src, st, CE_MATCH_IGNORE_VALID);
+}
+
+/*
* We do not want to remove or overwrite a working tree file that
* is not tracked, unless it is ignored.
*/
@@ -540,6 +556,16 @@ static int verify_absent(struct cache_entry *ce, const char *action,
int dtype = ce_to_dtype(ce);
struct cache_entry *result;
+ /*
+ * It may be that the 'lstat()' succeeded even though
+ * target 'ce' was absent, because there is an old
+ * entry that is different only in case..
+ *
+ * Ignore that lstat() if it matches.
+ */
+ if (ignore_case && icase_exists(o, ce, &st))
+ return 0;
+
if (o->dir && excluded(o->dir, ce->name, &dtype))
/*
* ce->name is explicitly excluded, so it is Ok to