server/tags: fix changing name case

2 files changed, 9 insertions, 9 deletions

diff --git a/server/szurubooru/func/tags.py b/server/szurubooru/func/tags.py
index 0bda252..c8f7aa3 100644
--- a/server/szurubooru/func/tags.py
+++ b/server/szurubooru/func/tags.py
@@ -27,6 +27,9 @@ def _lower_list(names):
 def _check_name_intersection(names1, names2):
     return len(set(_lower_list(names1)).intersection(_lower_list(names2))) > 0
 
+def _check_name_intersection_case_sensitive(names1, names2):
+    return len(set(names1).intersection(names2)) > 0
+
 def sort_tags(tags):
     default_category = tag_categories.try_get_default_category()
     default_category_name = default_category.name if default_category else None
@@ -222,14 +225,11 @@ def update_tag_names(tag, names):
     if len(existing_tags):
         raise TagAlreadyExistsError(
             'One of names is already used by another tag.')
-    tag_names_to_remove = []
-    for tag_name in tag.names:
-        if not _check_name_intersection([tag_name.name], names):
-            tag_names_to_remove.append(tag_name)
-    for tag_name in tag_names_to_remove:
-        tag.names.remove(tag_name)
+    for tag_name in tag.names[:]:
+        if not _check_name_intersection_case_sensitive([tag_name.name], names):
+            tag.names.remove(tag_name)
     for name in names:
-        if not _check_name_intersection(_get_plain_names(tag), [name]):
+        if not _check_name_intersection_case_sensitive(_get_plain_names(tag), [name]):
             tag.names.append(db.TagName(name))
 
 def update_tag_implications(tag, relations):
diff --git a/server/szurubooru/tests/api/test_tag_updating.py b/server/szurubooru/tests/api/test_tag_updating.py
index 3f3365a..151f62b 100644
--- a/server/szurubooru/tests/api/test_tag_updating.py
+++ b/server/szurubooru/tests/api/test_tag_updating.py
@@ -134,12 +134,12 @@ def test_reusing_own_name(test_ctx, dup_name):
             input={'names': [dup_name, 'tag3'], 'version': 1},
             user=test_ctx.user_factory(rank=db.User.RANK_REGULAR)),
         'tag1')
-    assert result['names'] == ['tag1', 'tag3']
+    assert result['names'] == [dup_name, 'tag3']
     assert tags.try_get_tag_by_name('tag2') is None
     tag1 = tags.get_tag_by_name('tag1')
     tag2 = tags.get_tag_by_name('tag3')
     assert tag1.tag_id == tag2.tag_id
-    assert [name.name for name in tag1.names] == ['tag1', 'tag3']
+    assert [name.name for name in tag1.names] == [dup_name, 'tag3']
 
 def test_duplicating_names(test_ctx):
     db.session.add(