Misc: allow unknown args when finding prefix

[aarani]

No description provided.

[knocte]

I shouldn't have merged it because you were missing the why, sigh. Please write the why here.

[knocte]

ping

[aarani]

I shouldn't have merged it because you were missing the why, sigh. Please write the why here.

There's no reason for a code that's supposed to search arguments for a prefix, to limit or even care about other arguments.
We needed to accept other arguments besides "prefix" in one of our scripts and this code would throw and this commit fixes that.

[knocte]

There's no reason for a code that's supposed to search arguments for a prefix, to limit or even care about other arguments, this commit fixes that.

And why do you need it to not care about other arguments? Please state the ultimate why @aarani

[aarani]

There's no reason for a code that's supposed to search arguments for a prefix, to limit or even care about other arguments, this commit fixes that.

And why do you need it to not care about other arguments? Please state the ultimate why @aarani

edited*