After posting this question here, I figured out how to view the moderator's comment to my answer, but I still haven't managed to view any of the other comments to the answer of mine I'm talking about. (From my profile, "deleted recent answers" brings me to the question but not my answer.)
At least one, probably two or more, commenters to it accused me of it being plagiarism.
After I was pointed to this answer and saw the phrase "any copying and pasting" in it, I edited my answer to attribute the zero-width spaces to an old version of that Wikipedia article, since they were the only things in that answer which I took from anywhere else. (The six quotation marks were just scare quotes.) Admittedly, I did not and do not remember which version of the article I copied them from. After that (I'm pretty sure it was more than 24 hours after that edit), a moderator deleted that answer and left a comment saying I was refusing to attribute.
I could not reply to that comment there, so I asked on one of that moderator's answers whether I needed to quote the zero-width spaces, as well as asking something (I forget exactly what) along the lines of "Should I not use scare quotes?".
When I didn't get a response for a tiny bit over 48 hours, I reminded the moderator on a different one of that moderator's answers. Subsequently, someone other than me deleted those two comments.
When they're the only thing I took from anywhere else, do I need to quote zero-width spaces rather than just providing attribution for them once at the top of my post?
When I don't remember which version I originally copied something from, should I just pick one of them to link to rather than linking to the whole list of versions?
Should I avoid scare quotes when I'm also quoting content from somewhere else?
Should I avoid scare quotes when I'm also acknowledging content from somewhere else without quoting that content?