Visually distinguish different lines (for long wrapped lines) in iTerm2 / Terminal
Here's a starting point.

In iTerm 2 go to Preferences > Profiles > (Your profile) > Advanced, then click Edit under Triggers.

Add a new Trigger using the + button at the bottom left, then set:


Regular Expression: .$
Action: Highlight Text…
Parameters: Red on White (or a colour combination you find appropriately funkadelic)


Close the Triggers pane.

You should now see a white "line" at the far right of the iTerm window. This is really iTerm changing the last character on the line to red text on a white background. This should help you spot lines that are wrapped versus new lines.

Example screen grab below (I use fish shell, btw)…