enquote
This Rust library quotes, unquotes, and unescapes strings.
Example
extern crate enquote;
fn main() {
assert_eq!(enquote::enquote('\'', "foo'bar"), "'foo\\'bar'");
assert_eq!(enquote::unquote("'foo\\'bar\\n'"), "foo'bar\n");
assert_eq!(enquote::unescape("\\n", None), "\n");
}