Giving multiple arguments causes an error

[AN3223]

Normally quoting a string will prevent word-splitting, but $@ is (weirdly) a special case and it will give unexpected arguments to [ which will cause an error like this:
./xbps-mini-builder: 61: [: <package name>: unexpected operator

$* is equivalent to $@ but without this weird behavior.

I recommend using shellcheck to lint your shell code, it will catch stuff like this (also adding set -e to the top of your scripts will prevent errors like this one from being trampled over).