oops

        if( cur >= limit )

        {

L_read:

            cur = start;

            // blank lines are returned as "\n" and will have a len of 1.

            // EOF will have a len of 0 and so is detectable.

            int len = readLine();

            if( len == 0 )

            {

                cur = start;        // after readLine(), since start can change, set cur offset to start

                curTok = DSN_EOF;

                goto exit;

            }

            cur = start;    // after readLine() since start can change.

            // skip leading whitespace

            while( cur<limit && isSpace(*cur) )

                ++cur;