Note that clever timing could get the "evil text" in your clipboard between checking in a text editor and pasting into the terminal. Hard to time correctly, but not impossible.
At first I thought "I don't do this; it's never seemed necessary", but actually, I think I do. Years of copying to a plain text editor to strip formatting have conditioned the behavior.
Yeah, I started to copy through a text box (usually the Windows Run (Win+R) box, which isn't exactly safe now that I think of it...) to strip formatting some time ago. It's pretty much necessary whenever you want to paste anything into GMail web interface. The web is getting more ridiculous every day...