I'm editing a network protocol frame stored a file in Unix (\n newlines). I need to insert the carriage return character (U+000D aka \r). When I try to paste it from the clipboard ("+p) or type it using Ctrl+Shift+u-000d, the linefeed is inserted (U+000A).
What is the right way to do it?
R Samuel Klatchko
Type: ctrl-v ctrl-m
On Windows Use: ctrl-q ctrl-m
Ctrl-V tells vi that the next character typed should be inserted literally and ctrl-m is the keystroke for a carriage return.
来源：https://stackoverflow.com/questions/1585449/insert-the-carriage-return-character-in-vim