Usage of commas in Japanese sentences?

Question

This might sound like a strange question, but how does the usage of commas differ when used in Japanese compared to English? I believe `りんご、オレンジとバナナ` wouldn't work, but that it's OK to list like `りんご、オレンジ、バナナ` or `りんご、オレンジ、またはバナナ`. When should `りんごとオレンジとバナナ` and similar be used instead of commas or vice-versa? I've heard that going e.g. `分かりにくくて、読みたくない` with i-adjectives isn't correct but `分かりにくいし、読みたくない` and `分かりにくく、読みたくない` is. I'm guessing it's OK to go `簡単で、特に問題はない` and `簡単し、特に問題はない` right? Additionally, what is the meaning of `、。` at the end of a sentence, e.g.　`気にしてなかったけど、。`? I think it might have some kind of emotive effect, so I think I'd translate it as "I didn't *really* care though" (for emphasis.) I might translate `、。` as "I'm flustered that..." in some other contexts but I'm not sure.

Answer 1

Punctuation in Japanese tends to be a lot more free, but the basic rule seems to be use it where you would naturally pause while speaking or to make the contents of your sentence less ambiguous.

TE is a particle which, when spoken, would be quite distinct. Adj+KU might be more ambiguous on the page. Not sure if that's true or not.

Tofugu has a good article.