There's an answer here which could benefit from the code being in a code segment, but I can't modify it because it's only whitespace characters. Even changing the "$3" to be
$3 is only two non-whitespace characters - on Stack Overflow the addition of those 4 spaces can make a big difference to otherwise small posts.
I am aware that small edits are discouraged, but in the linked answer for instance I couldn't find anything else that I would change. Moving things into code blocks just doesn't seem like a trivial edit, though - shouldn't the addition of whitespace which moves text into code segments be allowed?