[ILibrary] fix dedup messing up rotations

masque/test/test_library.py

@@ -6,7 +6,7 @@ from ..pattern import Pattern
 from ..error import LibraryError, PatternError
 from ..ports import Port
 from ..repetition import Grid
-from ..shapes import Path
+from ..shapes import Arc, Ellipse, Path, Text
 from ..file.utils import preflight
 
 if TYPE_CHECKING:
@@ -261,6 +261,29 @@ def test_library_dedup_shapes_does_not_merge_custom_capped_paths() -> None:
     assert len(lib["top"].shapes[(1, 0)]) == 2
 
 
+def test_library_dedup_text_preserves_scale_and_mirror_flag() -> None:
+    lib = Library()
+    pat = Pattern()
+    pat.shapes[(1, 0)] += [
+        Text("A", 10, "dummy.ttf", offset=(0, 0)),
+        Text("A", 10, "dummy.ttf", offset=(100, 0)),
+        ]
+    lib["top"] = pat
+
+    lib.dedup(exclude_types=(), norm_value=5, threshold=2)
+
+    target_name = next(iter(lib["top"].refs))
+    refs = lib["top"].refs[target_name]
+    assert [ref.mirrored for ref in refs] == [False, False]
+    assert [ref.scale for ref in refs] == [2.0, 2.0]
+    assert cast("Text", lib[target_name].shapes[(1, 0)][0]).height == 5
+
+    flat = lib.flatten("top")["top"]
+    assert [cast("Text", shape).height for shape in flat.shapes[(1, 0)]] == [10, 10]
+
+
+
+
 def test_library_dedup_handles_multiple_duplicate_groups() -> None:
     from ..shapes import Circle