James Joyce and not using Commas?

This is really random, but it’s bugging the heck out of me.

What’s with Joyce and commas? I’m reading Dubliners, and I can’t help but notice that he often doesn’t use commas when they are needed. For example (found in the opening couple pages of “Araby”,

“When the short days of winter came [,] dusk fell before we had well eaten our dinners.”

or

“When we returned to the street [,] light from the kitchen windows had filled the areas.”

Quick Edit: I read that Joyce preferred the long dash to the comma, but here he uses neither.