Say, I have this two lines
and I want to join them by removing newline with S&R. I put cursor at the beginning of line 2 and select up to the beginning on line 1. When I hit Ctrl+R, my "search for" field looks like this:
Now I hit tab and my "replace" field looks exactly the same. It is highlighted, so I cancel selection with right arrow key; my cursor is now at the end of "replace" field. So far, so good, so now I hit backspace in order to remove newline char and... turns out there's another, invisible char before newline! If I don't remove it, it gets inserted into the line like this:
instead of
ASCII code for this char is 31.