Update iso-prototype.py

src/iso-prototype.py

@@ -361,13 +361,30 @@ def iso_candidates(path: PurePosixPath, is_dir: bool = False) -> list[str]:
     return [base + ";1", base]
 
 
-def find_existing_record(iso, logical: PurePosixPath) -> dict[str, str]:
+def find_existing_record(
+    iso,
+    logical: PurePosixPath,
+    *,
+    is_dir: bool = False,
+) -> dict[str, str]:
     found: dict[str, str] = {}
+
+    iso_paths = iso_candidates(logical, is_dir=is_dir)
+    alias_path = iso9660_alias_path(
+        iso,
+        logical,
+        is_dir=is_dir,
+    )
+
+    if alias_path not in iso_paths:
+        iso_paths.append(alias_path)
+
     probes = {
         "udf_path": [str(logical)],
         "joliet_path": [str(logical)],
-        "iso_path": iso_candidates(logical),
+        "iso_path": iso_paths,
     }
+
     for namespace, candidates in probes.items():
         for candidate in candidates:
             try:
@@ -376,6 +393,7 @@ def find_existing_record(iso, logical: PurePosixPath) -> dict[str, str]:
                 continue
             found[namespace] = candidate
             break
+
     return found
 
 
@@ -494,7 +512,7 @@ def ensure_parent_directories(iso, logical: PurePosixPath) -> None:
         if part == "/":
             continue
         current /= part
-        if find_existing_record(iso, current):
+        if find_existing_record(iso, current, is_dir=True):
             continue
         iso.add_directory(**namespace_kwargs(iso, current, is_dir=True))
 
@@ -569,7 +587,7 @@ def sync_tree(iso, tree: Path, logical_root: PurePosixPath) -> None:
         rel = root_path.relative_to(tree)
         logical_dir = PurePosixPath("/") / PurePosixPath(rel.as_posix())
         ensure_parent_directories(iso, logical_dir / "placeholder")
-        if not find_existing_record(iso, logical_dir):
+        if not find_existing_record(iso, logical_dir, is_dir=True):
             iso.add_directory(**namespace_kwargs(iso, logical_dir, is_dir=True))
         for name in files:
             logical = logical_dir / name