Running sdw-admin --appl (typo) still provisions

[legoktm]

• I have searched for duplicates or related issues

Description

A typo in sdw-admin flags wasn't caught

Steps to Reproduce

1. Run sdw-admin --appl, note that I missed the y.

Expected Behavior

An error that --appl isn't a valid option

Actual Behavior

Provisioning begins...

Comments

I'm not immediately sure why this is happening, I assume there's some logic bug in our argparse handling.

[legoktm]

This seems to be some argparse feature? It automatically created short versions for all the flags, as long as it's a substring, --a -> apply, --u -> uninstall, etc.

[legoktm]

https://docs.python.org/3/library/argparse.html#argument-abbreviations-prefix-matching

The parse_args() method by default allows long options to be abbreviated to a prefix, if the abbreviation is unambiguous (the prefix matches a unique option):

I'm a bit dubious of this and not requiring people to be strict/explicit, but also if it's the default and I haven't run into it until now, maybe it's OK?