When you draw a square to construct walls, it comes out like in the first image. It would be much more sensible if it came out like in the second, you never need to build a solid block of walls like that.
#Constructing walls creates a solid square, should be hollow
worthy thorn
wispy hinge
I need a 2-3 wide wall when I plan on building fortifications on top. 
But I would support a toggle, for all designations of that kind. For placing decorative hollow squares of flooring for example.
worthy thorn
Sure, but you would probably not designate it like that anyway
because actually building the thing would get all screwed up as they built the outsides first
Which is an issue all on it's own I suppose
wispy hinge
Yea... The hollow square wall also fucks up when trying to build it from the inside, like giving my mayor the lead walls he likes so much. I have to designate 2 parallel walls first then wait for them to finish else they sometimes leave the corner unbuild
worthy thorn
Yeah
I was making an area around my starting stairwell right now, so it wasn't a big issue, I was gonna just knock two tiles out
But corners from the inside is a pain
wispy hinge
Those trees directly next to the wall were also a pain for my 2 wide walls. They would prevent the building of the tile directly between the treestump and the other wall.
I have seen dwarfs build diagonally, but they only do it if they also could reach it normally
wispy hinge
Sadly every tile building game with workers has this corner and "I-build-myself-into-the-wall" fuckery. At this point I'm almost convinced that checking pathfinding while considering "planned" obstacles is a unsolved mathematical problem or something.
There I solved the corner problem. Simply increase the building priority by 1 for every touching current and planned unreachable tile.
