The condition filtering attributes lacked parentheses, causing the
'not startswith(_)' guard to only apply to str attributes. Python 3.14's
new __firstlineno__ (int) class attribute leaked into the output.
Also includes ruff auto-formatting fixes (imports, trailing commas,
union type annotations).
Rewrite build_lfn_short_entry_name() and add _gen_numname_suffix() helper
to match the gen_numname() algorithm in ff.c. This fixes:
- chr(order) producing raw binary instead of ASCII digits
- Collision for order >= 10 when str(order) makes the name exceed 8 chars
- Hex suffix with dynamic stem shortening (matching C implementation)
- CRC16-CCITT hash for seq > 5 to reduce collision probability
Also fix LDIR_Name2_SIZE typo in long_filename_utils.py (should be
LDIR_Name3_SIZE), which made the assertion guard too permissive.
Add ShortFilenameGenerationTestCase with 9 unit tests covering single-digit,
multi-digit, hash-based, and collision-free generation scenarios.
The fatfsparse.py script was too strict in parsing the FAT boot sector, causing it to fail in
certain cases. This commit fixes the issue by making the parsing less strict and allowing for more
flexibility in the boot sector format.
This change improves the reliability and compatibility of the fatfsparse.py script, ensuring that it
can correctly parse a wider range of FAT boot sectors.
Docs updated
