Rider helps you automatically escape illegal characters in text that you copy/paste around your code.
If the pasted text contains characters that are illegal for the current context Rider displays a pop-up suggesting to escape all illegal characters. To accept this suggestion, press Alt+Enter or press Esc to reject it.
For example, when you paste a piece of text that contains double quotes into a string literal, Rider suggests to automatically escape all the quotes:
Another example is pasting a piece of code with generics into an XML doc tag: Rider will replace angle brackets with corresponding escape sequences.