Line 28 of Figure 11–6 seems a bit awkward. In general, it is clearer to say which is equivalent. We might therefore be tempted to change the line to if (space Index == -1) {  and to swap lines 29–38...

Line 28 of Figure 11–6 seems a bit awkward. In general, it is clearer to say

which is equivalent. We might therefore be tempted to change the line to if (space Index == -1) {  and to swap lines 29–38 with lines 40–45. Why does this not work?

Figure 11–6