String minification with extra symbols unexpected
This command:
```
echo 'print(--[[member]]"apple,banana,~coconut")' | python3 shrinko8.py - - --minify --format lua
```

Produces this output:
```
print"a,p,~coconut"
```

But I expect this output:
```
print"a,p,~c"
```

Is there a way to add more delimiters here, besides just commas?