Function slash_formatter::add_start_file_separator

pub fn add_start_file_separator(s: &str) -> String

Add an starting FILE_SEPARATOR into a string.

extern crate slash_formatter;

if cfg!(windows) {
    assert_eq!(r"\path", slash_formatter::add_start_file_separator("path"));
} else {
    assert_eq!("/path", slash_formatter::add_start_file_separator("path"));
}