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1 /* Oops; slight change from wc3.l introduces backtracking */
2
3 ws    [ \t]
4 nonws [^ \t\n]
5 word  {ws}*{nonws}+
6 words {word}{ws}+
7
8 %option main noyywrap
9 %%
10         int cc = 0, wc = 0, lc = 0;
11
12 {word}{ws}*             cc += yyleng; ++wc;
13 {word}{ws}*\n           cc += yyleng; ++wc; ++lc;
14 {words}{word}           cc += yyleng; wc += 2;  /* oops */
15 {words}{2}{word}{ws}*   cc += yyleng; wc += 3;
16 {words}{3}{word}{ws}*   cc += yyleng; wc += 4;
17
18 {ws}+                   cc += yyleng;
19
20 \n+                     cc += yyleng; lc += yyleng;
21
22 <<EOF>>         {
23                 printf( "%8d %8d %8d\n", lc, wc, cc );
24                 yyterminate();
25                 }