2.2.3 Single Quote String

This is similar to the shell single-quote string. However, escapes \ are honored before another escape, single quotes ' and hash characters #. This latter is done specifically to disambiguate lines starting with a hash character inside of a quoted string. In other words,

fumble = ' #endif ';

could be misinterpreted by the definitions scanner, whereas this would not:

fumble = ' \#endif ';

As with the double quote string, a series of these, even intermixed with double quote strings, will be concatenated together.