"Doesn't affect granite" bug?

[wobbly]

Why can you shoot while holding sword & shield? I remember the days of swapping. It was just yesterday, as I played Crawl. Why can you use a staff from the pack? Or drink a potion, read a scroll. How much extra UI hassle do you want and why?

[Nick]

Yes, I have a shovel. Why does Angband let you dig with an item you are not wielding? That doesn't make any sense!

It just automates the swapping process - no real gameplay change.

[Egavactip]

Are you carrying a weapon in the inventory that can dig through granite? You can dig from a pack item these days, it just uses your best digger.

Yes, I have a shovel. Why does Angband let you dig with an item you are not wielding? That doesn't make any sense!

[wobbly]

Are you carrying a weapon in the inventory that can dig through granite? You can dig from a pack item these days, it just uses your best digger.

[Egavactip]

So I'm playing a Dunadan Blackguard right now, with a Trident of Westernesse, and when I view this item, it says it doesn't affect granite.

However, I seem to be able to tunnel through granite very easily. So far as I know, I have no other items that would give my weapon tunneling (though the weapon display should reflect it if I did).

So is there a bug that doesn't show a tunneling bonus on some items, or is there a bug that gives an undeserved tunnel bonus or is there some other bug or am I going crazy?