New comment by oreo639 on void-packages repository

https://github.com/void-linux/void-packages/pull/39264#issuecomment-1974023999

Comment:
> 3\. I think you did this, in a couple of different ways, in an earlier proposal.

Here is what I did for that: https://gist.github.com/oreo639/850ddb140df502781f1f54fc1ffaba0c

> 4\. Properly validate that `locale.conf` contains nothing more than comments or simple `VAR=value` assignments. Reject it entirely if it does not conform, otherwise parse accordingly.

I pushed a version using that approach, although it will still accept lines that are valid (instead of rejecting the entire file)
In this case, it is using the regex from Fedora to check for a valid assignment.