Here is a direct link to the query (rather than to editing the query): data.stackexchange.com/mathoverflow/query/1341643/…

The search directly in the posts only shows one post. Search for url:"erich-friedman" shows 12 posts. So I guess that most of them already have been edited.

Regarding the comments - only moderators can edit those. (An alternative available to regular user is leaving a new comment with a corrected url.)

@b_jonas BTW you can use AS [User Link] in SEDE and in this way you can avoid the join with the Users table and still get a similar result: data.stackexchange.com/mathoverflow/query/1341762/…

@MartinSleziak True. I just copied the user part from a previous query.

@MartinSleziak Yes, I've edited the posts already, and for the comments I left a new comment.

@MartinSleziak Oh, you can search them that way? I didn't know.

Doesn't matter much, since I need SEDE to find the comments anyway.

Math SE is the big one, it has over 60 posts by the way, I won't edit all of them. Of course I wish Erich Friedman could have just set a redirect.

@MartinSleziak I didn't edit that one post by the way because a null edit previews with the image not being displayed for some reason. I don't know why.

But I edited it now.

@b_jonas Perhaps the problem with the image could be that it is http rather than https. Here is also some related discussion: chat.stackexchange.com/transcript/10243/2020/11/20

BTW I have occasionally posted some stuff related to dead links in MO editors' lounge: chat.stackexchange.com/…

@MartinSleziak No, I think it's because of the HTML tag, but I'll experiment and ask Meta SE.

Of course, it is still possible that an image isn't displayed in the preview but it works fine in the post. Sometimes there are differences between the preview and the actual rendering on the site.

@MartinSleziak Right. I just didn't meet such a case before.

@MartinSleziak And the problem is that I couldn't tell that the image will show up in the edited post. I still can't tell really. I just worked it around by changing the formatting.

As far as I can tell, it probably actually doesn't work even after a null edit, because the image doesn't even show up on the left of mathoverflow.net/review/suggested-edits/140824 . This isn't a bug with preview, it's a cached formatting that used to work with the old formatter engine.

It seems to happen after a <p> or <hr> tag.

It's probably one of the things that the new Markdown engine broke but that didn't get fixed with bulk edits.

You're probably right. And you reminded me of this:

@MartinSleziak Indeed, that seems to be the same issue. I'll post on Meta SE.

@MartinSleziak Thanks for the help. I posted to Meta SE.