PTH101, PTH104, PTH105, and PTH121 ignore extra arguments

[dscorbett]

Summary

The fixes for os-chmod (PTH101), os-rename (PTH104), os-replace (PTH105), and os-path-samefile (PTH121) do not check for extra arguments. This can change a program’s behavior. The fix for PTH101 should preserve the follow_symlinks argument if specified. All four fixes should be suppressed when the arguments don’t match the signature. Example:

$ cat >pth1.py <<'# EOF'
import os

# PTH101
os.close(os.open("pth1_file", os.O_CREAT | os.O_WRONLY, 0o640))
try: os.unlink("pth1_link")
except FileNotFoundError: pass
os.symlink("pth1_file", "pth1_link")
os.chmod("pth1_link", 0o600, follow_symlinks=False)
print(oct(os.stat("pth1_file").st_mode))
print(oct(os.lstat("pth1_link").st_mode))

# PTH101
try: os.chmod("pth1_file", 0o700, None, True, 1, *[1], **{"x": 1}, foo=1)
except TypeError as e: print(e)

# PTH104
try: os.rename("pth1_file", "pth1_file1", None, None, 1, *[1], **{"x": 1}, foo=1)
except TypeError as e: print(e)

# PTH105
try: os.replace("pth1_file1", "pth1_file", None, None, 1, *[1], **{"x": 1}, foo=1)
except TypeError as e: print(e)

# PTH121
try: os.path.samefile("pth1_file", "pth1_link", 1, *[1], **{"x": 1}, foo=1)
except TypeError as e: print(e)

os.unlink("pth1_file")
os.unlink("pth1_link")
# EOF

$ python pth1.py
0o100640
0o120600
chmod() takes at most 4 arguments (8 given)
rename() takes at most 4 arguments (8 given)
replace() takes at most 4 arguments (8 given)
samefile() got an unexpected keyword argument 'x'

$ ruff --isolated check pth1.py --select PTH101,PTH104,PTH105,PTH121 --preview --fix
Found 5 errors (5 fixed, 0 remaining).

$ python pth1.py
0o100600
0o120755

Version

ruff 0.12.10 (c68ff8d 2025-08-21)