Node:Multi-line Strings, Next:Subscripting, Previous:Escaped Newlines, Up:C Extensions

### String Literals with Embedded Newlines

As an extension, GNU CPP permits string literals to cross multiple lines without escaping the embedded newlines. Each embedded newline is replaced with a single `\n` character in the resulting string literal, regardless of what form the newline took originally.

CPP currently allows such strings in directives as well (other than the `#include` family). This is deprecated and will eventually be removed.