Everything about formatting is arbitrary, as long as it's consistent in a given codebase to the point of predictability (e.g. 90% consistent, not necessarily 10

Everything about formatting is arbitrary, as long as it's consistent in a given codebase to the point of predictability (e.g. 90% consistent, not necessarily 100% consistent). To elaborate a bit, sure, there are arguments for everything talked about here, and they're valid, but the marginal utility of any one choice is dwarfed by opting out of the arguments entirely, and just going with whatever Black has selected as a default.