-c ~= becomes C:\Users\= on Windows

[GaidaiIgor]

Describe the bug

Attempting to run pigar generate -c "~=" in powershell on windows results in the following error:

Error: Invalid value for '-c' / '--comparison-specifier': 'C:\Users\=' is not one of '==', '~=', '>=', '>', '-'.

So ~ is expanded into C:\Users\, which prevents ~= from being recognized as a valid option for -c.
As far as I can tell, this is not happening on powershell's side since running things like
python -c "import sys; print(sys.argv)" "~=" still prints ['-c', '~=']

Not sure if it breaks anything else in the code but changing cli() on line 553 in __main__.py to
cli.main(windows_expand_args=False) fixes this particular issue for me.

Context (Environment)

• OS: Windows 11
• Version of Python: 3.14
• Version of pigar: 2.2.0

[dosubot]

Hi @GaidaiIgor! I'm Dosu and I’m helping the pigar team.

This happens because pigar uses the Click library for its CLI, and by default on Windows, Click expands any argument starting with ~ into the user's home directory before parsing options. That's why ~= becomes C:\Users\= and fails validation for the -c option, even though PowerShell itself doesn't expand ~ in this context.

Your workaround—changing the entry point to cli.main(windows_expand_args=False)—is safe and effective. It disables this automatic expansion, so the literal ~= is passed through and accepted as a valid comparison specifier. This is a recommended fix for this scenario and would consistently resolve the issue on Windows if applied in the entry point of pigar’s CLI. There are currently no existing tickets or documentation about this specific problem in the pigar repo, so documenting this workaround or updating the entry point would be a good next step for maintainers.
Reference: pigar/main.py

To reply, just mention @dosu.

---

Docs are dead. Just use Dosu.

[damnever]

Thank you for reporting this. Try installing the main branch with: pip install git+https://github.com/damnever/pigar.git@main