Nothing more confusing that pasting a long string into a text editor and having it be EXACTLY the window width.
Why isn't it wrapping? Why can't I get to the end of the non-wrapped line? Gah!
Even worse if it's a random string, like a hash or public key.
That looks like Emacs. You can get it to show in the fringe whether the line has been truncated or wrapped. Of course, it costs you a couple of pixels. 😉
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