In Pico-8 I can do this:

d={ "one",
"two",
"three"
}

print(d[1][2])

This would return the 'n' from 'one'

Picotron returns nil.
I have to use

sub(d[r],c,c)

Has lua syntax changed or is this a Picotron thing?

zep added string indexing to pico-8’s lua, but not to picotron’s