[Bug]: Sanitize functions does not detect reserved names after stripping leading spaces

[Githubzhzhang]

Summary

sanitize_filename and sanitize_filepath does not detect reserved names after stripping leading spaces such as " AUX"

Description

When the input contains a reserved name with leading spaces (e.g. " AUX"), both sanitize_filename and sanitize_filepath strip the spaces but fail to recognize the resulting string as a reserved name.

Expected Behavior

After stripping spaces, the result should be recognized as a reserved name and handled accordingly (e.g. " AUX" → "AUX_").

Code to reproduce

from pathvalidate import sanitize_filename, sanitize_filepath

# sanitize_filename
print(sanitize_filename("AUX",  platform="Windows"))   # 'AUX_'  ✅
print(sanitize_filename(" AUX", platform="Windows"))   # 'AUX'   ❌

# sanitize_filepath
print(sanitize_filepath("AUX",     platform="Windows"))   # 'AUX_'    ✅
print(sanitize_filepath(" AUX",    platform="Windows"))   # 'AUX'     ❌
print(sanitize_filepath(" NUL.txt", platform="Windows"))  # 'NUL.txt' ❌

Your Environment

Module	Version
uname	Windows 10
Python	CPython 3.12.3
platform	10 10.0.19045 SP0
pathvalidate	3.3.1