public int read() throws IOException {
	synchronized (lock) {
	    ensureOpen();
	    for (;;) {
		if (nextChar >= nChars) {
		    fill();
		    if (nextChar >= nChars)
			return -1;
		}
		if (skipLF) {
		    skipLF = false;
		    if (cb[nextChar] == '\n') {
			nextChar++;
			continue;
		    }
		}
		return cb[nextChar++];
	    }
	}
    }