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1180(r{2,})S
1535(two)S
1711(or)S
1820(more)S
2052(r's)S
2520 V
1180(r{4})S
1535(exactly)S
1851(4)S
1926(r's)S
2640 V
1180({name})S
1619(the)S
1767(expansion)S
2199(of)S
2308(the)S
2456("name")S
(de256nition)385 2781 A
2760 V
1455((see)S
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2880 V
1180("[xyz]\"foo")S
3000 V
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2146([xyz]"foo)S
3120 V
1180(\X)S
1506(if)S
1593(X)S
1691(is)S
1783(an)S
1903('a',)S
2066('b',)S
('f',)127 2234 A
2386('n',)S
('r',)127 2554 A
2706('t',)S
2852(or)S
2961('v',)S
3240 V
1505(then)S
1703(the)S
1851(ANSI-C)S
2213(interpretation)S
2781(of)S
2890(\x.)S
3360 V
1505(Otherwise,)S
1970(a)S
(literal)236 2040 A
2301('X')S
2467((used)S
2710(to)S
2813(escape)S
3480 V
1505(operators)S
1905(such)S
2114(as)S
2223('*'))S
3600 V
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1533(the)S
1681(character)S
2077(with)S
2281(octal)S
2502(value)S
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1528(the)S
1676(character)S
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2276(hexadecimal)S
2810(value)S
3053(2a)S
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1960(parentheses)S
2455(are)S
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2916(override)S
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2172(below))S
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1626(regular)S
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4440 V
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1816(expression)S
2271(s;)S
2363(called)S
2629("concatenation")S
4800 V
1180(r|s)S
1473(either)S
1728(an)S
1848(r)S
1907(or)S
2016(an)S
2136(s)S
5160 V
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1660(but)S
1813(only)S
2016(if)S
2103(it)S
2184(is)S
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2784(an)S
2904(s.)S
3018(The)S
5280 V
1505(s)S
1569(is)S
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1814(part)S
1996(of)S
2105(the)S
2253(matched)S
2619(text.)S
2845(This)S
3049(type)S
5400 V
1505(of)S
1614(pattern)S
1919(is)S
2011(called)S
2277(as)S
("trailing)332 2386 A
2743(context".)S
5520 V
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1677(but)S
1830(only)S
2033(at)S
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2574(a)S
2644(line.)S
2870(Equivalent)S
5760 V
1505(to)S
1608("r/\n".)S
6120 V
1180(<s>r)S
1542(an)S
1662(r,)S
1746(but)S
1899(only)S
2102(in)S
2205(start)S
(condition)379 2404 A
2808(s)S
2872((see)S
6240 V
1455(below)S
1726(for)S
1869(discussion)S
2312(of)S
2421(start)S
(conditions))452 2620 A
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1180(<s1,s2,s3>r)S
6480 V
1455(same,)S
1712(but)S
1865(in)S
1968(any)S
2138(of)S
2247(start)S
(conditions)418 2446 A
2889(s1,)S
6600 V
1455(s2,)S
1594(or)S
1703(s3)S
6960 V
1180(<<EOF>>)S
1699(an)S
1819(end-of-256le)S
7080 V
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7200 V
1455(an)S
1575(end-of-256le)S
2026(when)S
2269(in)S
2372(start)S
(condition)379 2571 A
2975(s1)S
3089(or)S
3198(s2)S
7440 V
1080(The)S
1267(regular)S
1583(expressions)S
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2600(are)S
(grouped)329 2754 A
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3540(to)S
(precedence,)479 3648 A
4157(from)S
4383(highest)S
(precedence)454 4703 A
5188(at)S
7903 V
720(September)S
1176(17,)S
(1996)200 1326 A
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4990(Page)S
5211(4)S
8143 V
EP
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BP
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480 V
10 R
720(FLEX)S
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1081())S
2756(Version)S
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4866(FLEX)S
5127(()S
5169(1)S
5227())S
960 V
1080(the)S
1228(top)S
1381(to)S
1484(lowest)S
1772(at)S
1870(the)S
2018(bottom.)S
2377(Those)S
(grouped)329 2648 A
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3357(have)S
3572(equal)S
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4509(example,)S
1200 V
1180(foo|bar*)S
1440 V
1080(is)S
1172(the)S
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1552(as)S
1680 V
1180((foo)|(ba(r*)))S
1920 V
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1972(has)S
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4952(alterna-)S
2040 V
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2017(therefore)S
2411(matches)S
10 I
2770(either)S
10 R
3034(the)S
3186(string)S
3444("foo")S
10 I
3689(or)S
10 R
3807(the)S
3959(string)S
4216("ba")S
4421(followed)S
4807(by)S
4935(zero-or-)S
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1631(match)S
1902("foo")S
2143(or)S
2252(zero-or-more)S
2810("bar"'s,)S
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2400 V
1180(foo|(bar)*)S
2640 V
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1250(to)S
1353(match)S
1624(zero-or-more)S
2182("foo"'s-or-"bar"'s:)S
2880 V
1180((foo|bar)*)S
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1696(patterns:)S
3336 V
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2889(the)S
3050(example)S
3429("[303A-Z]")S
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10 I
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10 R
5010(unless)S
3456 V
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2736(sequence))S
3186(is)S
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3623(the)S
3793(characters)S
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2420((e.g.,)S
2658("[303A-Z\n]").)S
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3806(how)S
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4831(expression)S
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2739(classes,)S
3104(but)S
3292(unfortunately)S
3894(the)S
4076(inconsistency)S
4682(is)S
4808(historically)S
3816 V
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3398(pattern)S
3724(like)S
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2770(buffer))S
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3352(there's)S
3652(another)S
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4330(the)S
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1080(-)S
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1732(can)S
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2228(most)S
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2296('/')S
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2603('$',)S
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3678(normal)S
3988(character:)S
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2164(is)S
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2588(or)S
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720(H)S
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3941(returned)S
4305(to)S
4411(the)S
(input).)265 4562 A
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4976(it)S
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7488 V
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3606(the)S
10 I
3754(flex)S
10 R
(input)206 3925 A
4156(file)S
4316(is)S
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7903 V
720(Page)S
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2723(26)S
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4455(September)S
4911(17,)S
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8143 V
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480 V
10 R
720(FLEX)S
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4866(FLEX)S
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1080(Once)S
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4273(token))S
10 R
4554(is)S
4650(made)S
4897(available)S
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1080(in)S
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10 B
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4437(yyleng.)S
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1596(remaining)S
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3579(next)S
3790(character)S
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4315(the)S
(input)206 4476 A
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3256(simplest)S
3616(legal)S
10 I
3837(flex)S
10 R
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1757(a)S
1827(scanner)S
2160(that)S
2336(simply)S
2634(copies)S
2916(its)S
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3267((one)S
3471(character)S
3867(at)S
3965(a)S
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720(A)S
722(AC)S
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1550(first)S
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2754(character;)S
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1489(then)S
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2415(is)S
2515(matched)S
2889(the)S
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3665("zap)S
3871(me")S
4060(from)S
4281(its)S
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1386(me")S
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2011(characters)S
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2569(the)S
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1834(which)S
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2407(line:)S
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1180(%%)S
4104 V
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1947(')S
2006(')S
2065();)S
4224 V
1180([)S
1239(\t]+$)S
1611(/*)S
(ignore)257 1714 A
1996(this)S
2166(token)S
2414(*/)S
4512 V
1080(If)S
1185(the)S
1345(action)S
1628(contains)S
2000(a)S
2082('{',)S
2260(then)S
2470(the)S
2630(action)S
2913(spans)S
(till)112 3173 A
3322(the)S
3482(balancing)S
3910('}')S
4063(is)S
(found,)259 4167 A
4463(and)S
4645(the)S
4805(action)S
5088(may)S
4632 V
1080(cross)S
(multiple)335 1322 A
1692(lines.)S
10 I
1967(flex)S
10 R
(knows)262 2148 A
(about)223 2445 A
2703(C)S
2805(strings)S
3107(and)S
3286(comments)S
3733(and)S
3912(won't)S
4181(be)S
4310(fooled)S
4601(by)S
(braces)258 4735 A
(found)234 5027 A
4752 V
1080(within)S
1366(them,)S
1621(but)S
1778(also)S
1969(allows)S
2261(actions)S
2575(to)S
2682(begin)S
2934(with)S
10 B
3142(%{)S
10 R
3311(and)S
(will)157 3485 A
3671(consider)S
4041(the)S
4193(action)S
4468(to)S
4575(be)S
4699(all)S
4829(the)S
4981(text)S
5161(up)S
4872 V
1080(to)S
1183(the)S
1331(next)S
10 B
1529(%})S
10 R
1694((regardless)S
2162(of)S
2271(ordinary)S
(braces)258 2637 A
2920(inside)S
3185(the)S
3333(action).)S
5040 V
1080(An)S
1240(action)S
1523(consisting)S
1968(solely)S
2246(of)S
2368(a)S
2451(vertical)S
2792(bar)S
2959(('|'))S
3153(means)S
3448("same)S
3734(as)S
3856(the)S
4017(action)S
4301(for)S
4457(the)S
4618(next)S
4829(rule.")S
5115(See)S
5160 V
1080(below)S
1351(for)S
1494(an)S
(illustration.)461 1614 A
5328 V
1080(Actions)S
1419(can)S
1585(include)S
1907(arbitrary)S
2282(C)S
2376(code,)S
2618(including)S
10 B
3024(return)S
10 R
3332(statements)S
3784(to)S
3889(return)S
4157(a)S
4229(value)S
4474(to)S
4579(whatever)S
4976(routine)S
5448 V
1080(called)S
10 B
1347(yylex().)S
10 R
1689(Each)S
1917(time)S
10 B
2122(yylex())S
10 R
2439(is)S
2532(called)S
2799(it)S
2881(continues)S
3292(processing)S
3748(tokens)S
4035(from)S
4256(where)S
4528(it)S
4609(last)S
4774(left)S
4934(off)S
(until)184 5077 A
5568 V
1080(it)S
1166(either)S
(reaches)303 1426 A
1759(the)S
1912(end)S
2087(of)S
2201(the)S
2354(file)S
2519(or)S
2633(executes)S
3010(a)S
3085(return.)S
3406(Once)S
3650(it)S
(reaches)303 3737 A
4071(an)S
(end-of-file,)457 4197 A
4685(however,)S
5088(then)S
5688 V
1080(any)S
1263(subsequent)S
1747(call)S
1931(to)S
10 B
2047(yylex())S
10 R
(will)157 2376 A
2571(simply)S
2882(immediately)S
3423(return,)S
3727(unless)S
10 B
(yyrestart())460 4016 A
10 R
4514(is)S
4619(first)S
4820(called)S
5098((see)S
5808 V
1080(below).)S
5976 V
1080(Actions)S
1418(are)S
1567(not)S
1720(allowed)S
2064(to)S
2167(modify)S
2482(yytext)S
2758(or)S
2867(yyleng.)S
6144 V
1080(There)S
1341(are)S
1490(a)S
1560(number)S
1892(of)S
2001(special)S
2306(directives)S
2723(which)S
2994(can)S
3159(be)S
3279(included)S
3650(within)S
3932(an)S
4052(action:)S
6312 V
1080(-)S
10 B
1440(ECHO)S
10 R
1761(copies)S
2043(yytext)S
2319(to)S
2422(the)S
2570(scanner's)S
2976(output.)S
6480 V
1080(-)S
10 B
1440(BEGIN)S
10 R
1789(followed)S
2172(by)S
2297(the)S
2445(name)S
2688(of)S
2797(a)S
2867(start)S
(condition)379 3067 A
(places)252 3472 A
3750(the)S
3899(scanner)S
4233(in)S
4337(the)S
(corresponding)575 4486 A
5087(start)S
6600 V
(condition)379 1440 A
1844((see)S
2032(below).)S
6768 V
1080(-)S
10 B
1440(REJECT)S
10 R
1865(directs)S
2162(the)S
2313(scanner)S
2649(to)S
(proceed)319 2755 A
3103(on)S
3232(to)S
3339(the)S
("second)320 3491 A
3840(best")S
4072(rule)S
4258(which)S
4533(matched)S
4903(the)S
(input)206 5055 A
6888 V
1440((or)S
1608(a)S
1703(pre256x)S
1988(of)S
2122(the)S
(input).)265 2295 A
2635(The)S
2841(rule)S
3047(is)S
3163(chosen)S
3491(as)S
3624(described)S
(above)240 4059 A
4348(in)S
4475("How)S
4761(the)S
(Input)212 4933 A
5194(is)S
7008 V
1440(Matched",)S
1884(and)S
10 B
2055(yytext)S
10 R
2344(and)S
10 B
2515(yyleng)S
10 R
2820(set)S
2958(up)S
3084(appropriately.)S
3697(It)S
3785(may)S
3985(either)S
4242(be)S
4364(one)S
4536(which)S
4809(matched)S
5177(as)S
7128 V
1440(much)S
1706(text)S
1900(as)S
2026(the)S
2191(originally)S
2624(chosen)S
2945(rule)S
3144(but)S
3314(came)S
3569(later)S
3791(in)S
3911(the)S
10 I
4076(257ex)S
10 R
(input)206 4258 A
4506(256le,)S
4702(or)S
4828(one)S
5015(which)S
7248 V
1440(matched)S
1811(less)S
1992(text.)S
2223(For)S
2393(example,)S
2789(the)S
2942(following)S
(will)157 3363 A
3550(both)S
(count)223 3758 A
4011(the)S
4164(words)S
4440(in)S
4548(the)S
(input)206 4702 A
4939(and)S
5115(call)S
7368 V
1440(the)S
1588(routine)S
1898(special())S
2271(whenever)S
2688("frob")S
2963(is)S
3055(seen:)S
7903 V
720(September)S
1176(17,)S
(1996)200 1326 A
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4990(Page)S
5211(6)S
8143 V
EP
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480 V
10 R
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981(()S
1023(1)S
1081())S
2756(Version)S
3100(2.3)S
4866(FLEX)S
5127(()S
5169(1)S
5227())S
960 V
1740(int)S
(word_count)480 1871 A
2376(=)S
2458(0;)S
1080 V
1540(%%)S
1320 V
1540(frob)S
1908(special();)S
2309(REJECT;)S
1440 V
1540([303)S
(\t\n]+)225 1633 A
(++word_count;)622 1933 A
1680 V
(Without)329 1440 A
1808(the)S
10 B
1970(REJECT,)S
10 R
2431(any)S
2615("frob"'s)S
2977(in)S
3095(the)S
(input)206 3258 A
3504(would)S
3795(not)S
3963(be)S
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4456(as)S
4580(words,)S
4891(since)S
5138(the)S
1800 V
1440(scanner)S
1779(normally)S
2173(executes)S
2551(only)S
2759(one)S
2934(action)S
3210(per)S
3369(token.)S
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10 B
4048(REJECT's)S
10 R
4548(are)S
4702(allowed,)S
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1920 V
1440(one)S
1613(256nding)S
1925(the)S
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2277(best)S
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3676(rule.)S
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4079(example,)S
4473(when)S
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2016(the)S
2164(token)S
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2734(it)S
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2997(write)S
3230("abcdabcaba")S
3807(to)S
3910(the)S
4058(output:)S
2280 V
1540(%%)S
2400 V
1540(a)S
1785(|)S
2520 V
1540(ab)S
1810(|)S
2640 V
1540(abc)S
1830(|)S
2760 V
1540(abcd)S
1855(ECHO;)S
2183(REJECT;)S
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1540(.|\n)S
1788(/*)S
1891(eat)S
2034(up)S
2159(any)S
2329(unmatched)S
2795(character)S
3191(*/)S
3120 V
1440((The)S
1660(256rst)S
1846(three)S
2077(rules)S
2302(share)S
2544(the)S
2696(fourth's)S
3044(action)S
3319(since)S
3556(they)S
3759(use)S
3923(the)S
4076(special)S
4386('|')S
4504(action.))S
10 B
4864(REJECT)S
3240 V
10 R
1440(is)S
1546(a)S
1630(particularly)S
2134(expensive)S
2575(feature)S
2895(in)S
3012(terms)S
3274(scanner)S
3620(performance;)S
4196(if)S
4296(it)S
4390(is)S
4495(used)S
4717(in)S
10 I
4833(any)S
10 R
5016(of)S
5138(the)S
3360 V
1440(scanner's)S
1861(actions)S
2186(it)S
(will)157 2282 A
2479(slow)S
2709(down)S
10 I
2972(all)S
10 R
3118(of)S
3243(the)S
3407(scanner's)S
3829(matching.)S
4294(Furthermore,)S
10 B
4864(REJECT)S
3480 V
10 R
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1733(be)S
1853(used)S
2062(with)S
2266(the)S
10 I
2414(-f)S
10 R
2501(or)S
10 I
2610(-F)S
10 R
2731(options)S
3051((see)S
3239(below).)S
3648 V
1440(Note)S
1669(also)S
1865(that)S
2050(unlike)S
2335(the)S
2492(other)S
2733(special)S
3047(actions,)S
10 B
3391(REJECT)S
10 R
3822(is)S
3923(a)S
10 I
4002(branch;)S
10 R
4354(code)S
4578(immediately)S
5115(fol-)S
3768 V
1440(lowing)S
1744(it)S
1825(in)S
1928(the)S
2076(action)S
(will)157 2347 A
10 I
2529(not)S
10 R
2682(be)S
2802(executed.)S
3936 V
1080(-)S
10 B
1440(yymore())S
10 R
1858(tells)S
2052(the)S
2202(scanner)S
2537(that)S
2715(the)S
2865(next)S
3065(time)S
3271(it)S
3354(matches)S
3711(a)S
3783(rule,)S
3992(the)S
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4744(token)S
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4056 V
1440(be)S
10 I
(appended)390 1565 A
10 R
1985(onto)S
2193(the)S
2346(current)S
2662(value)S
2910(of)S
10 B
3024(yytext)S
10 R
3316(rather)S
3581(than)S
3783(replacing)S
4187(it.)S
4322(For)S
4491(example,)S
4886(given)S
5138(the)S
4176 V
(input)206 1440 A
("mega-kludge")607 1671 A
2303(the)S
2451(following)S
(will)157 2867 A
3049(write)S
("mega-mega-kludge")859 3282 A
4166(to)S
4269(the)S
4417(output:)S
4416 V
1540(%%)S
4536 V
1540(mega-)S
1892(ECHO;)S
2220(yymore();)S
4656 V
(kludge)273 1540 A
1888(ECHO;)S
4896 V
1440(First)S
1656("mega-")S
2021(is)S
2119(matched)S
2491(and)S
2667(echoed)S
2983(to)S
3092(the)S
3246(output.)S
3583(Then)S
("kludge")355 3821 A
4208(is)S
4307(matched,)S
4705(but)S
4865(the)S
5020(previ-)S
5016 V
1440(ous)S
1609("mega-")S
1973(is)S
(still)151 2070 A
2251(hanging)S
(around)279 2604 A
2913(at)S
3016(the)S
3169(beginning)S
3600(of)S
10 B
3714(yytext)S
10 R
4007(so)S
4126(the)S
10 B
4279(ECHO)S
10 R
4605(for)S
4753(the)S
("kludge")355 4906 A
5136 V
1440(rule)S
(will)157 1639 A
1838(actually)S
2199(write)S
("mega-kludge".)632 2449 A
3148(The)S
3347(presence)S
3742(of)S
10 B
3869(yymore())S
10 R
4304(in)S
4425(the)S
4591(scanner's)S
5015(action)S
5256 V
1440(entails)S
1728(a)S
1798(minor)S
2063(performance)S
2598(penalty)S
2919(in)S
3022(the)S
3170(scanner's)S
3576(matching)S
3975(speed.)S
5424 V
1080(-)S
10 B
1440(yyless(n))S
10 R
1851(returns)S
2167(all)S
2305(but)S
2470(the)S
2630(256rst)S
10 I
2824(n)S
10 R
2911(characters)S
3358(of)S
3479(the)S
3639(current)S
3962(token)S
4222(back)S
4449(to)S
4564(the)S
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4967(stream,)S
5544 V
1440(where)S
1720(they)S
(will)157 1926 A
2116(be)S
2243(rescanned)S
2678(when)S
2928(the)S
3083(scanner)S
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3672(for)S
3822(the)S
3977(next)S
4182(match.)S
10 B
4510(yytext)S
10 R
4805(and)S
10 B
4982(yyleng)S
5664 V
10 R
1440(are)S
1598(adjusted)S
1967(appropriately)S
2538((e.g.,)S
10 B
2776(yyleng)S
10 R
(will)157 3089 A
3280(now)S
3487(be)S
3616(equal)S
3869(to)S
10 I
3982(n)S
10 R
4067().)S
4186(For)S
4361(example,)S
4762(on)S
4897(the)S
(input)206 5055 A
5784 V
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1810(the)S
1958(following)S
(will)157 2374 A
2556(write)S
2789(out)S
("foobarbar":)502 2942 A
6024 V
1540(%%)S
6144 V
(foobar)263 1540 A
1903(ECHO;)S
2231(yyless(3);)S
6264 V
1540([a-z]+)S
1889(ECHO;)S
6504 V
1440(An)S
1604(argument)S
2025(of)S
2150(0)S
2241(to)S
10 B
2360(yyless)S
10 R
(will)157 2652 A
2850(cause)S
3115(the)S
3279(entire)S
3550(current)S
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4124(string)S
4395(to)S
4515(be)S
4652(scanned)S
5018(again.)S
6624 V
1440(Unless)S
(you've)279 1740 A
2045(changed)S
2405(how)S
2603(the)S
2751(scanner)S
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3266(subsequently)S
3815(process)S
4142(its)S
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4493((using)S
10 B
4769(BEGIN,)S
10 R
5143(for)S
6744 V
1440(example),)S
1865(this)S
(will)157 2035 A
2217(result)S
2466(in)S
2569(an)S
2689(endless)S
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6912 V
1080(-)S
10 B
(unput(c))371 1440 A
10 R
1860(puts)S
2076(the)S
2248(character)S
10 I
2669(c)S
10 R
2764(back)S
3004(onto)S
3232(the)S
(input)206 3405 A
3661(stream.)S
4030(It)S
(will)157 4142 A
4349(be)S
4494(the)S
4667(next)S
4890(character)S
7032 V
1440(scanned.)S
1864(The)S
2071(following)S
2512(action)S
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3015(take)S
3233(the)S
3406(current)S
3742(token)S
4015(and)S
4209(cause)S
4482(it)S
4587(to)S
4714(be)S
4858(rescanned)S
7152 V
1440(enclosed)S
1817(in)S
1920(parentheses.)S
7392 V
1540({)S
7512 V
1540(int)S
1671(i;)S
7903 V
720(Page)S
941(7)S
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4455(September)S
4911(17,)S
(1996)200 5061 A
8143 V
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480 V
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1081())S
2756(Version)S
3100(2.3)S
4866(FLEX)S
5127(()S
5169(1)S
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(unput()262 1540 A
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1080 V
1540(for)S
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1742(i)S
1795(=)S
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2175(-)S
2234(1;)S
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2632(--i)S
2753())S
1200 V
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1927(yytext[i])S
2299();)S
1320 V
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1954();)S
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1540(})S
1680 V
1440(Note)S
1680(that)S
1875(since)S
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10 B
(unput())326 2356 A
10 R
2727(puts)S
2939(the)S
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3375(character)S
3791(back)S
4026(at)S
4144(the)S
10 I
4312(beginning)S
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4758(of)S
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1800 V
1440(stream,)S
1759(pushing)S
2101(back)S
2316(strings)S
2609(must)S
2829(be)S
(done)195 2949 A
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1080(-)S
10 B
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2003(the)S
2152(next)S
2351(character)S
2748(from)S
2970(the)S
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3353(stream.)S
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3866(example,)S
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1811(C)S
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2328 V
1540(%%)S
2448 V
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2568 V
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2168(int)S
2299(c;)S
2808 V
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2042(;)S
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3048 V
1940(while)S
2189(()S
2248((c)S
2352(=)S
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2767(!=)S
2883('*')S
3026(&&)S
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2326(EOF)S
2542())S
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2168(/*)S
2271(eat)S
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2715(of)S
2824(comment)S
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2027(()S
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2156(==)S
2295('*')S
2438())S
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2040({)S
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2040(while)S
2289(()S
2348((c)S
2452(=)S
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2867(==)S
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1080(start)S
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1910(be)S
2032(inactive.)S
2428(If)S
2523(the)S
2673(start)S
(condition)379 2874 A
3280(is)S
10 I
3374(inclusive,)S
10 R
3784(then)S
3984(rules)S
4207(with)S
4413(no)S
4540(start)S
(conditions)418 4742 A
5188(at)S
2448 V
1080(all)S
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1394(also)S
1584(be)S
1707(active.)S
2026(If)S
2122(it)S
2206(is)S
10 I
(exclusive,)395 2301 A
10 R
2724(then)S
10 I
2924(only)S
10 R
3124(rules)S
3347(quali256ed)S
3726(with)S
3932(the)S
4082(start)S
(condition)379 4283 A
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4873(be)S
4995(active.)S
2568 V
1080(A)S
1180(set)S
1319(of)S
1430(rules)S
1653(contingent)S
2104(on)S
2231(the)S
2381(same)S
2615(exclusive)S
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(condition)379 3223 A
3629(describe)S
3992(a)S
4065(scanner)S
4401(which)S
4675(is)S
4770(independent)S
2688 V
1080(of)S
1199(any)S
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1498(the)S
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1898(rules)S
2129(in)S
2241(the)S
10 I
2398(257ex)S
10 R
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(Because)336 2862 A
3232(of)S
3350(this,)S
3554(exclusive)S
3968(start)S
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4628(make)S
4880(it)S
4970(easy)S
5183(to)S
2808 V
1080(specify)S
1405("mini-scanners")S
2086(which)S
2366(scan)S
2579(portions)S
2942(of)S
3060(the)S
(input)206 3217 A
3457(that)S
3642(are)S
3800(syntactically)S
4343(different)S
4726(from)S
4957(the)S
5115(rest)S
2928 V
1080((e.g.,)S
1309(comments).)S
3096 V
1080(If)S
1177(the)S
1329(distinction)S
1782(between)S
2148(inclusive)S
2541(and)S
2716(exclusive)S
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3778(is)S
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4056(a)S
(little)185 4131 A
4346(vague,)S
4641(here's)S
4918(a)S
4993(simple)S
3216 V
1080(example)S
(illustrating)436 1446 A
1907(the)S
(connection)441 2055 A
2521(between)S
2882(the)S
3030(two.)S
3256(The)S
3438(set)S
3575(of)S
3684(rules:)S
3456 V
1180(%s)S
1328(example)S
3576 V
1180(%%)S
3696 V
1180(<example>foo)S
2044(/*)S
2147(do)S
2272(something)S
2715(*/)S
3936 V
1080(is)S
1172(equivalent)S
1616(to)S
4176 V
1180(%x)S
1339(example)S
4296 V
1180(%%)S
4416 V
1180(<INITIAL,example>foo)S
2241(/*)S
2344(do)S
2469(something)S
2912(*/)S
4704 V
1080(The)S
1262(default)S
1567(rule)S
1749((to)S
10 B
1886(ECHO)S
10 R
2207(any)S
2377(unmatched)S
2843(character))S
3273(remains)S
3617(active)S
3883(in)S
3986(start)S
(conditions.)443 4185 A
4872 V
10 B
1080(BEGIN(0))S
10 R
1556(returns)S
1870(to)S
1982(the)S
2139(original)S
2486(state)S
2705(where)S
2986(only)S
3198(the)S
3355(rules)S
3586(with)S
3800(no)S
3935(start)S
(conditions)418 4144 A
4597(are)S
4756(active.)S
5082(This)S
4992 V
1080(state)S
1300(can)S
1475(also)S
1672(be)S
1802(referred)S
2158(to)S
2271(as)S
2390(the)S
(start-condition)587 2548 A
3170("INITIAL",)S
3683(so)S
10 B
3806(BEGIN(INITIAL))S
10 R
4629(is)S
4730(equivalent)S
5183(to)S
5112 V
10 B
1080(BEGIN(0).)S
10 R
1575((The)S
1794(parentheses)S
(around)279 2293 A
2601(the)S
2753(start)S
(condition)379 2956 A
3364(name)S
3611(are)S
3764(not)S
3921(required)S
4286(but)S
4443(are)S
4596(considered)S
(good)200 5061 A
5232 V
1080(style.))S
5400 V
10 B
1080(BEGIN)S
10 R
1432(actions)S
1745(can)S
1914(also)S
2105(be)S
2229(given)S
2481(as)S
2594(indented)S
2969(code)S
3188(at)S
3290(the)S
3442(beginning)S
3872(of)S
3985(the)S
4137(rules)S
4362(section.)S
4726(For)S
4895(example,)S
5520 V
1080(the)S
1232(following)S
(will)157 1652 A
1838(cause)S
2091(the)S
2243(scanner)S
2580(to)S
2687(enter)S
2918(the)S
3070("SPECIAL")S
3591(start)S
(condition)379 3794 A
4201(whenever)S
10 I
4621(yylex())S
10 R
4925(is)S
5020(called)S
5640 V
1080(and)S
1250(the)S
1398(global)S
1674(variable)S
10 I
2024(enter_special)S
10 R
2591(is)S
2683(true:)S
5880 V
1380(int)S
1511(enter_special;)S
6120 V
1180(%x)S
1339(SPECIAL)S
6240 V
1180(%%)S
6360 V
1380(if)S
1467(()S
1526(enter_special)S
2083())S
6480 V
1480(BEGIN(SPECIAL);)S
6720 V
1180(<SPECIAL>blahblahblah)S
6840 V
(...more)282 1180 A
1487(rules)S
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7128 V
1080(To)S
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1605(the)S
1758(uses)S
1961(of)S
2075(start)S
(conditions,)443 2279 A
2752(here)S
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3053(a)S
3128(scanner)S
3466(which)S
3742(provides)S
4118(two)S
4300(different)S
4679(interpretations)S
7248 V
1080(of)S
1191(a)S
1263(string)S
1518(like)S
("123.456".)432 1695 A
2178(By)S
2321(default)S
2627(it)S
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2892(treat)S
3098(it)S
3180(as)S
3290(as)S
3400(three)S
3628(tokens,)S
3941(the)S
4090(integer)S
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4679(a)S
4750(dot)S
4904(('.'),)S
5116(and)S
7368 V
1080(the)S
1238(integer)S
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1870(But)S
2050(if)S
2147(the)S
2305(string)S
2569(is)S
(preceded)364 2671 A
3070(earlier)S
3364(in)S
3477(the)S
3635(line)S
3821(by)S
3956(the)S
4114(string)S
4379("expect-257oats")S
5012(it)S
(will)157 5104 A
7488 V
1080(treat)S
1285(it)S
1366(as)S
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1545(single)S
1810(token,)S
2083(the)S
2231(257oating-point)S
2803(number)S
(123.456:)353 3135 A
7903 V
720(September)S
1176(17,)S
(1996)200 1326 A
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4940(Page)S
5161(10)S
8143 V
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720(FLEX)S
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960 V
1180(%{)S
1080 V
1180(#include)S
1551(<math.h>)S
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1328(expect)S
1560 V
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1895(BEGIN(expect);)S
1920 V
1180(<expect>[0-9]+"."[0-9]+)S
2332({)S
2040 V
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2133(257oat,)S
2362(=)S
2444(%f\n",)S
2160 V
1680(atof()S
1896(yytext)S
2172())S
2231();)S
2280 V
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1910({)S
2520 V
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1583(that's)S
1832(the)S
1980(end)S
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1938(another)S
2265("expect-number")S
2760 V
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1863(we'll)S
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2683(more)S
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3000 V
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1480(BEGIN(INITIAL);)S
3240 V
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1589({)S
3600 V
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2183(integer,)S
2513(=)S
2595(%d\n",)S
3720 V
1680(atoi()S
1890(yytext)S
2166())S
2225();)S
3840 V
1480(})S
4080 V
1180(".")S
1512(printf()S
("found)275 1795 A
2095(a)S
2165(dot\n")S
2437();)S
4320 V
1080(Here)S
1322(is)S
1434(a)S
1524(scanner)S
1877(which)S
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2645((and)S
2870(discards))S
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3393(comments)S
3852(while)S
4122(maintaining)S
4648(a)S
(count)223 4739 A
5008(of)S
5138(the)S
4440 V
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1622(line.)S
4680 V
1180(%x)S
1339(comment)S
4800 V
1180(%%)S
4920 V
1380(int)S
(line_num)379 1511 A
1915(=)S
1997(1;)S
5160 V
1180("/*")S
1565(BEGIN(comment);)S
5400 V
1180(<comment>[303*\n]*)S
2148(/*)S
2251(eat)S
2394(anything)S
2770(that's)S
3019(not)S
3172(a)S
3242('*')S
3385(*/)S
5520 V
1180(<comment>"*"+[303*/\n]*)S
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2486(up)S
2611('*'s)S
2793(not)S
2946(followed)S
3329(by)S
3454('/'s)S
3614(*/)S
5640 V
1180(<comment>\n)S
(++line_num;)521 2071 A
5760 V
1180(<comment>"*"+"/")S
2167(BEGIN(INITIAL);)S
6000 V
1080(Note)S
1308(that)S
(start-conditions)626 1492 A
2151(names)S
2441(are)S
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3464(and)S
3642(can)S
3815(be)S
3943(stored)S
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4339(such.)S
4606(Thus,)S
4865(the)S
(above)240 5021 A
6120 V
1080(could)S
1328(be)S
1448(extended)S
1836(in)S
1939(the)S
2087(following)S
2503(fashion:)S
6360 V
1180(%x)S
1339(comment)S
1738(foo)S
6480 V
1180(%%)S
6600 V
1380(int)S
(line_num)379 1511 A
1915(=)S
1997(1;)S
6720 V
1380(int)S
1511(comment_caller;)S
6960 V
1180("/*")S
1565({)S
7080 V
1505(comment_caller)S
2179(=)S
2261(INITIAL;)S
7200 V
1505(BEGIN(comment);)S
7320 V
1505(})S
7903 V
720(Page)S
941(11)S
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4455(September)S
4911(17,)S
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1200 V
1180(<foo>"/*")S
1688({)S
1320 V
1505(comment_caller)S
2179(=)S
2261(foo;)S
1440 V
1505(BEGIN(comment);)S
1560 V
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2251(eat)S
2394(anything)S
2770(that's)S
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2611('*'s)S
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3329(by)S
3454('/'s)S
3614(*/)S
2040 V
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2160 V
1180(<comment>"*"+"/")S
2167(BEGIN(comment_caller);)S
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1080(One)S
1279(can)S
1450(then)S
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3893(of)S
4008(integers.)S
4408((It)S
4535(is)S
4633(likely)S
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5077(such)S
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1969(full-257edged)S
10 I
2471(257ex)S
10 R
2643(feature)S
2956(in)S
3066(the)S
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4348(start)S
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1080(have)S
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3454(in)S
3557(the)S
3705(same)S
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4367(#de256ne's.)S
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9 R
720(M)S
722(MU)S
804(UL)S
872(LT)S
930(TI)S
988(IP)S
1021(PL)S
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10 R
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1334(scanners)S
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1949(as)S
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3894(where)S
4173(the)S
4328(next)S
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4960(be)S
5087(read)S
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1080(from)S
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2130(YY_INPUT)S
10 R
2669(which)S
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3422(to)S
3530(the)S
3683(scanning)S
4070(context.)S
10 B
4446(YY_INPUT)S
10 R
4986(is)S
5083(only)S
3288 V
1080(called)S
1350(when)S
1597(the)S
1749(scanner)S
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2418(the)S
2570(end)S
2744(of)S
2857(its)S
2981(buffer,)S
3282(which)S
3557(may)S
3759(be)S
3883(a)S
(long)178 3957 A
4163(time)S
4370(after)S
4584(scanning)S
4969(a)S
5042(state-)S
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1080(ment)S
1306(such)S
1515(as)S
1624(an)S
1744("include")S
2147(which)S
2418(requires)S
2768(switching)S
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3563(source.)S
3576 V
1080(To)S
1228(negotiate)S
1633(these)S
1877(sorts)S
2104(of)S
2225(problems,)S
10 I
2661(257ex)S
10 R
2838(provides)S
3221(a)S
3303(mechanism)S
3798(for)S
3953(creating)S
4315(and)S
4497(switching)S
4925(between)S
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2032(An)S
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2775(created)S
3092(by)S
3217(using:)S
3936 V
1180(YY_BUFFER_STATE)S
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2895(FILE)S
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3363(int)S
3494(size)S
3676())S
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1611(a)S
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10 R
1948(pointer)S
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4063(with)S
4281(the)S
4443(given)S
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4874(and)S
5059(large)S
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1429(to)S
1561(hold)S
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1793(size)S
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4474(size).)S
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1080(YY_BUFFER_STATE)S
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1080(switches)S
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5110(that)S
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2015(pointing)S
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2374(yyin)S
10 R
2567(at)S
2665(it.)S
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1180(void)S
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3097(buffer)S
3369())S
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2059(alias)S
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5904 V
10 I
1080(new)S
10 R
1267(and)S
10 I
1437(delete)S
10 R
1703(for)S
1846(creating)S
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1418(the)S
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10 R
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10 B
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6864 V
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7032 V
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10 R
3842(as)S
3951(shown)S
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4489(example)S
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7368 V
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2577(rule)S
2761(is)S
2855(given,)S
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10 I
3630(all)S
10 R
3763(start)S
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4409(which)S
4682(do)S
4809(not)S
4964(already)S
7903 V
720(Page)S
941(13)S
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2723(26)S
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4911(17,)S
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1200 V
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1080(These)S
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3324(comments.)S
3812(An)S
3960(example:)S
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1708(=)S
1790(fopen()S
2078(*256lelist,)S
2430("r")S
2571();)S
3288 V
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3528 V
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1480(yyterminate();)S
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9 R
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4176 V
10 R
1080(The)S
1263(macro)S
10 B
1541(YY_USER_ACTION)S
10 R
2485(can)S
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4296 V
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1984(action.)S
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2486(example,)S
2885(it)S
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3771(to)S
3882(call)S
4061(a)S
4139(routine)S
4456(to)S
(convert)302 4566 A
4900(yytext)S
5183(to)S
4416 V
1080(lower-case.)S
4584 V
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1269(macro)S
10 B
1554(YY_USER_INIT)S
10 R
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3513(an)S
3641(action)S
3920(which)S
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4299(always)S
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5003(before)S
4704 V
1080(the)S
1232(256rst)S
1418(scan)S
1626((and)S
1834(before)S
2121(the)S
2273(scanner's)S
2683(internal)S
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4057(For)S
4225(example,)S
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4954(be)S
5077(used)S
4824 V
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2402(table)S
2623(or)S
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3353(256le.)S
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5112 V
10 B
1080(YY_BREAK,)S
10 R
1702(which)S
1991(may)S
2207(be)S
2345(rede256ned.)S
2813(By)S
2973(default,)S
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3846(a)S
3934("break",)S
4308(to)S
4429(separate)S
(each)185 4803 A
5031(rule's)S
5232 V
1080(action)S
1358(from)S
1586(the)S
1741(following)S
2164(rule's.)S
2476(Rede256ning)S
10 B
2949(YY_BREAK)S
10 R
3535(allows,)S
3855(for)S
4005(example,)S
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4616(users)S
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4965(#de256ne)S
5352 V
1080(YY_BREAK)S
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4870("return"!))S
5472 V
1080(to)S
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1477(suffering)S
1889(from)S
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2668(statement)S
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3519(where)S
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4181(a)S
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4554(action)S
4849(ends)S
5082(with)S
5592 V
1080("return",)S
1453(the)S
10 B
1601(YY_BREAK)S
10 R
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5760 V
9 R
720(I)S
722(IN)S
755(NT)S
823(TE)S
881(ER)S
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5880 V
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1080(One)S
1274(of)S
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1961(of)S
10 I
2072(257ex)S
10 R
2239(is)S
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2444(a)S
2516(companion)S
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3094(the)S
10 I
3244(yacc)S
10 R
3456(parser-generator.)S
10 I
4195(yacc)S
10 R
4407(parsers)S
4720(expect)S
5010(to)S
5115(call)S
6000 V
1080(a)S
1156(routine)S
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10 B
1771(yylex())S
10 R
2093(to)S
2202(256nd)S
2389(the)S
2543(next)S
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3287(The)S
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5138(the)S
6120 V
1080(next)S
1293(token)S
1556(as)S
1680(well)S
1894(as)S
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2342(any)S
2527(associated)S
2981(value)S
3239(in)S
3358(the)S
3522(global)S
10 B
3814(yylval.)S
10 R
4136(To)S
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10 I
4464(257ex)S
10 R
4645(with)S
10 I
4865(yacc,)S
10 R
5116(one)S
6240 V
1080(speci256es)S
1458(the)S
10 B
1612(-d)S
10 R
1732(option)S
2018(to)S
10 I
2126(yacc)S
10 R
2341(to)S
2449(instruct)S
2781(it)S
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2975(generate)S
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3500(256le)S
10 B
3659(y.tab.h)S
10 R
3985(containing)S
(de256nitions)424 4439 A
4893(of)S
5007(all)S
5138(the)S
6360 V
10 B
1080(%tokens)S
10 R
1485(appearing)S
1907(in)S
2010(the)S
10 I
2158(yacc)S
10 R
(input.)231 2368 A
2649(This)S
2853(256le)S
3007(is)S
3099(then)S
3297(included)S
3668(in)S
3771(the)S
10 I
3920(257ex)S
10 R
4086(scanner.)S
4470(For)S
4636(example,)S
5028(if)S
5116(one)S
6480 V
1080(of)S
1189(the)S
1337(tokens)S
1624(is)S
1716("TOK_NUMBER",)S
2537(part)S
2719(of)S
2828(the)S
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3309(might)S
(look)178 3568 A
3771(like:)S
6720 V
1180(%{)S
6840 V
1180(#include)S
1551("y.tab.h")S
6960 V
1180(%})S
7200 V
1180(%%)S
7440 V
1180([0-9]+)S
1639(yylval)S
1915(=)S
1997(atoi()S
2207(yytext)S
2483();)S
2570(return)S
2836(TOK_NUMBER;)S
7903 V
720(September)S
1176(17,)S
(1996)200 1326 A
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4940(Page)S
5161(14)S
8143 V
EP
%%Page: 15 111
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720(T)S
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10 I
2562(257ex)S
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3183(translation)S
3655(table)S
10 R
3888(for)S
4039(mapping)S
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4662(characters)S
5105(into)S
1200 V
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1610(table)S
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2306(in)S
2409(the)S
2557(256rst)S
2739(section,)S
3074(and)S
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3364(format)S
(looks)217 3658 A
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1440 V
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1560 V
1180(1)S
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1680 V
1180(2)S
1430(ABCDEFGHIJKLMNOPQRSTUVWXYZ)S
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1180(52)S
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1920 V
1180(6)S
(\t\)84 1430 A
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2040 V
1180(%t)S
2280 V
1080(This)S
1299(example)S
1680(speci256es)S
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2258(the)S
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2873('a',)S
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3925(to)S
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4664(into)S
(group)234 4861 A
5136(#1,)S
2400 V
(upper-case)437 1080 A
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2641(in)S
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3782(and)S
3963(newlines)S
4357(into)S
(group)234 4549 A
4819(#6,)S
4980(and)S
10 I
5161(no)S
2520 V
1080(other)S
1323(characters)S
(will)151 1784 A
(appear)284 1966 A
2281(in)S
2390(the)S
2544(patterns.)S
10 R
2954(The)S
(group)234 3142 A
3407(numbers)S
3784(are)S
3939(actually)S
4289(disregarded)S
4790(by)S
10 I
4921(257ex;)S
10 B
5127(%t)S
2640 V
10 R
1080(serves,)S
(though,)303 1384 A
1714(to)S
1819(lump)S
2052(characters)S
2489(together.)S
2895(Given)S
3167(the)S
(above)240 3316 A
3582(table,)S
3829(for)S
3973(example,)S
4365(the)S
4514(pattern)S
4820("a(AA)*5")S
2760 V
1080(is)S
1184(equivalent)S
1640(to)S
1755("d(ZQ)*0".)S
2277(They)S
2521(both)S
2736(say,)S
2933("match)S
3258(any)S
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10 B
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1732(option)S
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10 I
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10 B
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3408 V
1080(there)S
1307(if)S
(you)150 1394 A
1569(want)S
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9 R
720(O)S
722(OP)S
790(PT)S
842(TI)S
900(IO)S
933(ON)S
1001(NS)S
1069(S)S
3696 V
10 I
1080(257ex)S
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1245(has)S
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1080(-b)S
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1440(Generate)S
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3058(lex.backtrack.)S
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4004(a)S
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(input)206 2650 A
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4454(-f)S
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(squeeze)319 4522 A
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4464 V
1440(MANCE)S
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2730(below.))S
4632 V
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1080(-c)S
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1440(is)S
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1602(do-nothing,)S
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4800 V
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1440(NOTE:)S
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1787(in)S
1893(previous)S
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2727(flex)S
10 B
2901(-c)S
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3008(specified)S
3400(table-compression)S
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4539(This)S
(functionality)514 4747 A
4920 V
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10 B
2264(-C)S
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10 I
4438(flex)S
10 R
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5074(-c,)S
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2112(-c)S
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2357(-C)S
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5280 V
1440(POSIX)S
1757(meaning)S
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2597(first).)S
5448 V
10 B
1080(-d)S
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10 I
(debug)245 2942 A
10 R
3222(mode.)S
3530(Whenever)S
3979(a)S
4060(pattern)S
4376(is)S
(recognized)442 4479 A
4957(and)S
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5568 V
1440(global)S
10 B
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10 R
2361(is)S
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2842((which)S
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10 R
5038(a)S
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1697(form:)S
5928 V
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3818(the)S
3975(scanner)S
4317(backtracks,)S
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2310(the)S
2468(end)S
2648(of)S
2767(its)S
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3420((or)S
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4044(a)S
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5110(two)S
6528 V
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2527(scanner's)S
2933(concerned),)S
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10 B
1080(-f)S
10 R
1440(speci256es)S
1817((take)S
(your)184 2049 A
2263(pick))S
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2500(full)S
2664(table)S
10 R
2895(or)S
10 I
3009(fast)S
(scanner.)343 3184 A
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3557(No)S
3710(table)S
3936(compression)S
4475(is)S
(done.)220 4573 A
4849(The)S
5037(result)S
6816 V
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1759(but)S
1912(fast.)S
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2337(option)S
2618(is)S
2710(equivalent)S
3154(to)S
10 B
3257(-Cf)S
10 R
3423((see)S
3611(below).)S
6984 V
10 B
1080(-i)S
10 R
1440(instructs)S
10 I
1810(257ex)S
10 R
1979(to)S
2086(generate)S
2458(a)S
10 I
(case-insensitive)638 2533 A
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3201(scanner.)S
3589(The)S
3776(case)S
3980(of)S
4094(letters)S
4371(given)S
4624(in)S
4732(the)S
10 I
4885(257ex)S
10 R
(input)206 5055 A
7104 V
1440(patterns)S
(will)157 1802 A
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(ignored,)332 2140 A
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2703(tokens)S
3008(in)S
3129(the)S
(input)206 3294 A
(will)157 3542 A
3741(be)S
3878(matched)S
4261(regardless)S
4712(of)S
4838(case.)S
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7224 V
1440(matched)S
1806(text)S
1982(given)S
2230(in)S
10 I
2333(yytext)S
10 R
(will)157 2594 A
2776(have)S
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3139(preserved)S
3556(case)S
3755((i.e.,)S
3962(it)S
(will)157 4043 A
4225(not)S
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4498(folded).)S
7392 V
10 B
1080(-n)S
10 R
1440(is)S
1532(another)S
1859(do-nothing,)S
(deprecated)437 2349 A
2811(option)S
3092(included)S
3463(only)S
3666(for)S
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4126(compliance.)S
7903 V
720(Page)S
941(15)S
2681(()S
2723(26)S
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3265())S
4455(September)S
4911(17,)S
(1996)200 5061 A
8143 V
EP
%%Page: 16 112
BP
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480 V
10 R
720(FLEX)S
981(()S
1023(1)S
1081())S
2756(Version)S
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4866(FLEX)S
5127(()S
5169(1)S
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960 V
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1080(-p)S
10 R
1440(generates)S
1851(a)S
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2845(stderr.)S
3156(The)S
3344(report)S
3616(consists)S
3965(of)S
4080(comments)S
4524(regarding)S
4941(features)S
1080 V
1440(of)S
1551(the)S
10 I
1701(257ex)S
10 R
(input)206 1868 A
2101(256le)S
2257(which)S
(will)157 2530 A
2714(cause)S
2965(a)S
3037(loss)S
3220(of)S
3331(performance)S
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3973(the)S
(resulting)352 4123 A
4502(scanner.)S
4887(Note)S
5110(that)S
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1769(of)S
10 I
1889(REJECT)S
10 R
2279(and)S
2460(variable)S
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3679(the)S
3838(BUGS)S
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4464(in)S
4578(257ex(1)))S
4917(entails)S
5216(a)S
1320 V
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2806(use)S
2974(of)S
10 I
3092(yymore(),)S
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3516(the)S
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3673(303)S
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3741(operator,)S
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10 B
4472(-I)S
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4579(257ag)S
4764(entail)S
5021(minor)S
1440 V
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10 B
1080(-s)S
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10 I
1880(default)S
2186(rule)S
10 R
2375((that)S
2587(unmatched)S
3055(scanner)S
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3719(echoed)S
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10 I
(stdout))279 4138 A
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4445(to)S
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1728 V
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1080(-t)S
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1806(257ex)S
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1971(to)S
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3378(standard)S
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4444(lex.yy.c.)S
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1440(speci256es)S
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10 I
2002(257ex)S
10 R
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10 I
2823(stderr)S
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3095(a)S
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2626(are)S
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3838(257ex)S
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4005(user,)S
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4892(identi256es)S
2424 V
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2018(257ex,)S
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2208(which)S
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1080(-F)S
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2139(fast)S
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3128(),)S
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2201(TOK_SWITCH;)S
3672 V
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3792 V
1540("default")S
1927(return)S
2193(TOK_DEFAULT;)S
3912 V
1540([a-z]+)S
1889(return)S
2155(TOK_ID;)S
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5202(.)S
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10 B
2564(-CF)S
10 R
2758((see)S
2946(below).)S
4608 V
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1080(-I)S
10 R
1440(instructs)S
10 I
1811(257ex)S
10 R
1981(to)S
2089(generate)S
2461(an)S
10 I
2586(interactive)S
10 R
3047(scanner.)S
3436(Normally,)S
3878(scanners)S
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4810(257ex)S
10 R
4981(always)S
4728 V
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1831(overhead,)S
10 I
2259(257ex)S
10 R
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4968 V
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10 I
2233(interactive)S
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4982(system)S
5088 V
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1758(a)S
1828(command)S
2249(shell,)S
(you)150 2489 A
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4101(to)S
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5208 V
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2253(the)S
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2208 V
1180(arbitrary)S
(trailing)291 1553 A
1869(context)S
2448 V
('303')102 1180 A
1307(beginning-of-line)S
2036(operator)S
2568 V
1180(yymore())S
2808 V
1080(with)S
1284(the)S
1432(256rst)S
1614(three)S
1841(all)S
1967(being)S
2215(quite)S
2441(expensive)S
2868(and)S
3038(the)S
3186(last)S
3351(two)S
3527(being)S
3775(quite)S
4001(cheap.)S
2976 V
10 B
1080(REJECT)S
10 R
(should)267 1507 A
1804(be)S
1929(avoided)S
2277(at)S
2380(all)S
2511(costs)S
2742(when)S
2990(performance)S
3530(is)S
3627(important.)S
4098(It)S
4190(is)S
4287(a)S
4363(particularly)S
4859(expensive)S
3096 V
1080(option.)S
3264 V
(Getting)302 1080 A
1410(rid)S
1550(of)S
1662(backtracking)S
2210(is)S
2305(messy)S
2584(and)S
2758(often)S
2994(may)S
3196(be)S
3320(an)S
3444(enormous)S
(amount)301 3869 A
4199(of)S
4312(work)S
4548(for)S
4695(a)S
4769(complicated)S
3384 V
1080(scanner.)S
1467(In)S
1580(principal,)S
1991(one)S
2164(begins)S
2454(by)S
2582(using)S
2827(the)S
10 B
2978(-b)S
10 R
3096(257ag)S
3275(to)S
3381(generate)S
3751(a)S
10 I
3824(lex.backtrack)S
10 R
4392(256le.)S
4599(For)S
4767(example,)S
5161(on)S
3504 V
1080(the)S
(input)206 1228 A
3744 V
1180(%%)S
3864 V
1180(foo)S
1514(return)S
1780(TOK_KEYWORD;)S
3984 V
(foobar)263 1180 A
1568(return)S
1834(TOK_KEYWORD;)S
4224 V
1080(the)S
1228(256le)S
(looks)217 1382 A
1624(like:)S
4464 V
1180(State)S
1407(#6)S
1532(is)S
(non-accepting)570 1624 A
2219(-)S
4584 V
1205(associated)S
1644(rule)S
1826(line)S
2002(numbers:)S
4704 V
1355(2)S
1580(3)S
4824 V
(out-transitions:)609 1205 A
1839([)S
1898(o)S
1973(])S
4944 V
(jam-transitions:)632 1205 A
1862(EOF)S
2078([)S
(\001-n)262 2137 A
(p-\177)262 2449 A
2736(])S
5184 V
1180(State)S
1407(#8)S
1532(is)S
(non-accepting)570 1624 A
2219(-)S
5304 V
1205(associated)S
1644(rule)S
1826(line)S
2002(numbers:)S
5424 V
1355(3)S
5544 V
(out-transitions:)609 1205 A
1839([)S
1898(a)S
1968(])S
5664 V
(jam-transitions:)632 1205 A
1862(EOF)S
2078([)S
(\001-`)246 2137 A
(b-\177)262 2433 A
2720(])S
5904 V
1180(State)S
1407(#9)S
1532(is)S
(non-accepting)570 1624 A
2219(-)S
6024 V
1205(associated)S
1644(rule)S
1826(line)S
2002(numbers:)S
6144 V
1355(3)S
6264 V
(out-transitions:)609 1205 A
1839([)S
1898(r)S
1957(])S
6384 V
(jam-transitions:)632 1205 A
1862(EOF)S
2078([)S
(\001-q)262 2137 A
(s-\177)251 2449 A
2725(])S
6624 V
1180(Compressed)S
1702(tables)S
1962(always)S
2267(backtrack.)S
6864 V
1080(The)S
1264(256rst)S
1448(few)S
1627(lines)S
1844(tell)S
2000(us)S
2117(that)S
2296(there's)S
2599(a)S
2672(scanner)S
3008(state)S
3221(in)S
3327(which)S
3601(it)S
3685(can)S
3853(make)S
4099(a)S
(transition)380 4172 A
4580(on)S
4708(an)S
4831('o')S
4977(but)S
5133(not)S
6984 V
1080(on)S
1213(any)S
1391(other)S
1631(character,)S
2060(and)S
2238(that)S
2422(in)S
2533(that)S
2717(state)S
2935(the)S
3091(currently)S
3488(scanned)S
3845(text)S
4029(does)S
4246(not)S
4407(match)S
4686(any)S
4864(rule.)S
5104(The)S
7104 V
1080(state)S
1295(occurs)S
1588(when)S
1836(trying)S
2106(to)S
2214(match)S
2490(the)S
2643(rules)S
(found)234 2869 A
3133(at)S
3236(lines)S
3456(2)S
3536(and)S
3711(3)S
3791(in)S
3899(the)S
(input)206 4052 A
4288(256le.)S
4497(If)S
4595(the)S
4748(scanner)S
5086(is)S
5183(in)S
7224 V
1080(that)S
1264(state)S
1482(and)S
1660(then)S
1866(reads)S
2112(something)S
2563(other)S
2803(than)S
3009(an)S
3137('o',)S
3313(it)S
(will)157 3402 A
3592(have)S
3815(to)S
3926(backtrack)S
4351(to)S
4462(256nd)S
4650(a)S
4727(rule)S
4916(which)S
5194(is)S
7344 V
1080(matched.)S
1503(With)S
1736(a)S
1813(bit)S
1951(of)S
2067(headscratching)S
2703(one)S
2880(can)S
3052(see)S
3213(that)S
3396(this)S
3573(must)S
3800(be)S
3928(the)S
4084(state)S
4302(it's)S
4464(in)S
4575(when)S
4826(it)S
4915(has)S
5082(seen)S
7464 V
1080("fo".)S
1325(When)S
1594(this)S
1767(has)S
1929(happened,)S
2367(if)S
2457(anything)S
2836(other)S
3071(than)S
3272(another)S
3602('o')S
3748(is)S
3843(seen,)S
4075(the)S
4226(scanner)S
(will)157 4562 A
4747(have)S
4965(to)S
5071(back)S
7903 V
720(September)S
1176(17,)S
(1996)200 1326 A
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4940(Page)S
5161(18)S
8143 V
EP
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/slant 0 def
/height 0 def
480 V
10 R
720(FLEX)S
981(()S
1023(1)S
1081())S
2756(Version)S
3100(2.3)S
4866(FLEX)S
5127(()S
5169(1)S
5227())S
960 V
1080(up)S
1205(to)S
1308(simply)S
1606(match)S
1877(the)S
('f')102 2025 A
2152((by)S
2311(the)S
2459(default)S
2764(rule).)S
1128 V
1080(The)S
1270(comment)S
1677(regarding)S
2096(State)S
2331(#8)S
2464(indicates)S
2855(there's)S
3163(a)S
3241(problem)S
3610(when)S
("foob")266 3862 A
4162(has)S
4330(been)S
4554(scanned.)S
4962(Indeed,)S
1248 V
1080(on)S
1208(any)S
1381(character)S
1780(other)S
2015(than)S
2216(a)S
2289('b',)S
2459(the)S
2609(scanner)S
(will)157 2944 A
3128(have)S
3345(to)S
3450(back)S
3667(up)S
3794(to)S
(accept)258 3899 A
4184("foo".)S
4477(Similarly,)S
4904(the)S
5054(com-)S
1368 V
1080(ment)S
1306(for)S
1449(State)S
1676(#9)S
1801(concerns)S
2184(when)S
("fooba")311 2427 A
2763(has)S
2922(been)S
3137(scanned.)S
1536 V
1080(The)S
1269(256nal)S
1480(comment)S
1886(reminds)S
2242(us)S
2363(that)S
2546(there's)S
2854(no)S
2987(point)S
3226(going)S
3487(to)S
3598(all)S
3732(the)S
(trouble)285 3888 A
4206(of)S
4323(removing)S
4741(backtracking)S
1656 V
1080(from)S
1303(the)S
1453(rules)S
1676(unless)S
1954(we're)S
2212(using)S
10 B
2456(-f)S
10 R
2551(or)S
10 B
2662(-F,)S
10 R
2810(since)S
3044(there's)S
3346(no)S
3473(performance)S
4010(gain)S
4210(doing)S
4465(so)S
4581(with)S
4786(compressed)S
1776 V
1080(scanners.)S
1944 V
1080(The)S
1262(way)S
1455(to)S
1558(remove)S
1885(the)S
2033(backtracking)S
2578(is)S
2670(to)S
2773(add)S
2943("error")S
3247(rules:)S
2184 V
1180(%%)S
2304 V
1180(foo)S
1539(return)S
1805(TOK_KEYWORD;)S
2424 V
(foobar)263 1180 A
1593(return)S
1859(TOK_KEYWORD;)S
2664 V
(fooba)229 1180 A
1584(|)S
2784 V
(foob)184 1180 A
1564(|)S
2904 V
1180(fo)S
1514({)S
3024 V
1480(/*)S
1583(false)S
1799(alarm,)S
2079(not)S
2232(really)S
2487(a)S
2557(keyword)S
2934(*/)S
3144 V
1480(return)S
1746(TOK_ID;)S
3264 V
1480(})S
3552 V
1080(Eliminating)S
1580(backtracking)S
(among)273 2125 A
2423(a)S
2493(list)S
2641(of)S
2750(keywords)S
3166(can)S
3331(also)S
3518(be)S
(done)195 3638 A
3858(using)S
4100(a)S
4170("catch-all")S
4625(rule:)S
3792 V
1180(%%)S
3912 V
1180(foo)S
1539(return)S
1805(TOK_KEYWORD;)S
4032 V
(foobar)263 1180 A
1593(return)S
1859(TOK_KEYWORD;)S
4272 V
1180([a-z]+)S
1579(return)S
1845(TOK_ID;)S
4512 V
1080(This)S
1284(is)S
1376(usually)S
1691(the)S
1839(best)S
2026(solution)S
2374(when)S
2617(appropriate.)S
4680 V
1080(Backtracking)S
1643(messages)S
2049(tend)S
2248(to)S
2352(cascade.)S
2742(With)S
2969(a)S
3041(complicated)S
3560(set)S
3699(of)S
3810(rules)S
4033(it's)S
4189(not)S
4344(uncommon)S
4822(to)S
4927(get)S
(hun-)184 5077 A
4800 V
1080(dreds)S
1331(of)S
1448(messages.)S
1911(If)S
2012(one)S
2190(can)S
2363(decipher)S
2743(them,)S
(though,)303 3002 A
3338(it)S
3427(often)S
3667(only)S
3878(takes)S
4118(a)S
4196(dozen)S
4469(or)S
4586(so)S
4708(rules)S
4937(to)S
5048(elim-)S
4920 V
1080(inate)S
1305(the)S
1457(backtracking)S
((though)312 2006 A
2347(it's)S
2506(easy)S
2715(to)S
2823(make)S
3071(a)S
3146(mistake)S
3489(and)S
3664(have)S
3884(an)S
4009(error)S
4236(rule)S
(accidentally)487 4423 A
4940(match)S
5216(a)S
5040 V
1080(valid)S
1306(token.)S
1604(A)S
1702(possible)S
2056(future)S
10 I
2322(257ex)S
10 R
2487(feature)S
(will)157 2793 A
2975(be)S
3095(to)S
3198(automatically)S
3771(add)S
3941(rules)S
4162(to)S
4265(eliminate)S
4665(backtracking).)S
5208 V
10 I
1080(Variable)S
10 R
(trailing)291 1464 A
1787(context)S
2115((where)S
2428(both)S
2638(the)S
2793(leading)S
3121(and)S
(trailing)291 3298 A
3622(parts)S
3851(do)S
3984(not)S
4145(have)S
4368(a)S
4446(256xed)S
4680(length))S
4998(entails)S
5328 V
1080(almost)S
1373(the)S
1521(same)S
1753(performance)S
2288(loss)S
2469(as)S
10 I
2578(REJECT)S
10 R
2957((i.e.,)S
3164(substantial).)S
3703(So)S
3834(when)S
4077(possible)S
4431(a)S
4501(rule)S
4683(like:)S
5568 V
1180(%%)S
5688 V
(mouse|rat/(cat|dog))773 1180 A
2028(run();)S
5928 V
1080(is)S
1172(better)S
(written:)314 1427 A
6168 V
1180(%%)S
6288 V
(mouse/cat|dog)578 1180 A
1983(run();)S
6408 V
(rat/cat|dog)423 1180 A
1878(run();)S
6648 V
1080(or)S
1189(as)S
6888 V
1180(%%)S
7008 V
1180(mouse|rat/cat)S
1940(run();)S
7128 V
(mouse|rat/dog)567 1180 A
1972(run();)S
7368 V
1080(Note)S
1303(that)S
1481(here)S
1682(the)S
1832(special)S
2139('|')S
2254(action)S
2527(does)S
10 I
2738(not)S
10 R
2893(provide)S
3227(any)S
3399(savings,)S
3752(and)S
3924(can)S
4092(even)S
4310(make)S
4556(things)S
4829(worse)S
5098((see)S
7488 V
10 B
1080(BUGS)S
10 R
1379(in)S
1482(257ex(1)).)S
7903 V
720(Page)S
941(19)S
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4455(September)S
4911(17,)S
(1996)200 5061 A
8143 V
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/slant 0 def
/height 0 def
480 V
10 R
720(FLEX)S
981(()S
1023(1)S
1081())S
2756(Version)S
3100(2.3)S
4866(FLEX)S
5127(()S
5169(1)S
5227())S
960 V
1080(Another)S
1437(area)S
1633(where)S
1907(the)S
2057(user)S
2252(can)S
2419(increase)S
2777(a)S
2849(scanner's)S
3257(performance)S
3795((and)S
4002(one)S
4175(that's)S
4427(easier)S
4691(to)S
4797(implement))S
1080 V
1080(arises)S
1339(from)S
1564(the)S
1716(fact)S
1897(that)S
2077(the)S
(longer)257 2229 A
2515(the)S
2667(tokens)S
2958(matched,)S
3352(the)S
3503(faster)S
3756(the)S
3907(scanner)S
(will)157 4243 A
4428(run.)S
4640(This)S
4847(is)S
(because)319 4942 A
1200 V
1080(with)S
(long)178 1287 A
1493(tokens)S
1783(the)S
1934(processing)S
2392(of)S
2504(most)S
(input)206 2727 A
2962(characters)S
3401(takes)S
(place)213 3637 A
3879(in)S
3986(the)S
4138((short))S
4436(inner)S
4672(scanning)S
(loop,)203 5058 A
1320 V
1080(and)S
1253(does)S
1465(not)S
1620(often)S
1854(have)S
2071(to)S
2176(go)S
(through)312 2303 A
2642(the)S
(additional)402 2792 A
3221(work)S
3455(of)S
(setting)268 3566 A
3861(up)S
3988(the)S
4138(scanning)S
4522(environment)S
5057((e.g.,)S
1440 V
10 B
1080(yytext))S
10 R
1402(for)S
1545(the)S
1693(action.)S
(Recall)258 2014 A
2297(the)S
2445(scanner)S
2778(for)S
2921(C)S
3013(comments:)S
1680 V
1180(%x)S
1339(comment)S
1800 V
1180(%%)S
1920 V
1380(int)S
(line_num)379 1511 A
1915(=)S
1997(1;)S
2160 V
1180("/*")S
1565(BEGIN(comment);)S
2400 V
1180(<comment>[303*\n]*)S
2520 V
1180(<comment>"*"+[303*/\n]*)S
2640 V
1180(<comment>\n)S
(++line_num;)521 2071 A
2760 V
1180(<comment>"*"+"/")S
2167(BEGIN(INITIAL);)S
3000 V
1080(This)S
1284(could)S
1532(be)S
1652(sped)S
1861(up)S
1986(by)S
(writing)291 2111 A
2427(it)S
2508(as:)S
3240 V
1180(%x)S
1339(comment)S
3360 V
1180(%%)S
3480 V
1380(int)S
(line_num)379 1511 A
1915(=)S
1997(1;)S
3720 V
1180("/*")S
1565(BEGIN(comment);)S
3960 V
1180(<comment>[303*\n]*)S
4080 V
1180(<comment>[303*\n]*\n)S
(++line_num;)521 2176 A
4200 V
1180(<comment>"*"+[303*/\n]*)S
4320 V
1180(<comment>"*"+[303*/\n]*\n)S
(++line_num;)521 2268 A
4440 V
1180(<comment>"*"+"/")S
2167(BEGIN(INITIAL);)S
4680 V
1080(Now)S
1312(instead)S
1633(of)S
(each)185 1753 A
1974(newline)S
2329(requiring)S
2734(the)S
2893(processing)S
3359(of)S
3480(another)S
3819(action,)S
(recognizing)475 4127 A
4639(the)S
4799(newlines)S
5194(is)S
4800 V
1080("distributed")S
1624(over)S
1835(the)S
1990(other)S
2229(rules)S
2457(to)S
2567(keep)S
2789(the)S
2944(matched)S
3316(text)S
3498(as)S
(long)178 3613 A
3822(as)S
3937(possible.)S
4347(Note)S
4574(that)S
10 I
(adding)278 4756 A
10 R
5065(rules)S
4920 V
1080(does)S
10 I
1298(not)S
10 R
1461(slow)S
1686(down)S
1944(the)S
2102(scanner!)S
2504(The)S
2696(speed)S
2960(of)S
3079(the)S
3237(scanner)S
3580(is)S
3682(independent)S
4208(of)S
4327(the)S
4485(number)S
4827(of)S
4946(rules)S
5177(or)S
5040 V
((modulo)340 1080 A
1453(the)S
1609(considerations)S
2222(given)S
2477(at)S
2582(the)S
2737(beginning)S
3170(of)S
3286(this)S
3463(section))S
3814(how)S
4019(complicated)S
4543(the)S
4698(rules)S
4926(are)S
5082(with)S
5160 V
1080(regard)S
1363(to)S
1466(operators)S
1866(such)S
2075(as)S
2184('*')S
2327(and)S
2497('|'.)S
5328 V
1080(A)S
1178(256nal)S
1382(example)S
1748(in)S
1851(speeding)S
2233(up)S
2358(a)S
2428(scanner:)S
(suppose)323 2789 A
(you)150 3137 A
3313(want)S
3535(to)S
3639(scan)S
(through)312 3844 A
4182(a)S
4253(256le)S
4408(containing)S
4858(identi256ers)S
5448 V
1080(and)S
1252(keywords,)S
1695(one)S
1866(per)S
2021(line)S
2198(and)S
2369(with)S
2574(no)S
2700(other)S
2933(extraneous)S
3395(characters,)S
3856(and)S
(recognize)392 4027 A
4445(all)S
4572(the)S
4721(keywords.)S
5188(A)S
5568 V
1080(natural)S
1385(256rst)S
1567(approach)S
1961(is:)S
5808 V
1180(%%)S
5928 V
1180(asm)S
1492(|)S
6048 V
1180(auto)S
1478(|)S
6168 V
1180(break)S
1504(|)S
6288 V
(...)75 1180 A
1280(etc)S
(...)75 1423 A
6408 V
(volatile)302 1180 A
1507(|)S
6528 V
1180(while)S
1504(/*)S
1607(it's)S
1761(a)S
1831(keyword)S
2208(*/)S
6768 V
1180(.|\n)S
1428(/*)S
1531(it's)S
1685(not)S
1838(a)S
1908(keyword)S
2285(*/)S
7008 V
1080(To)S
1217(eliminate)S
1617(the)S
1765(back-tracking,)S
(introduce)380 2369 A
2774(a)S
2844(catch-all)S
3217(rule:)S
7248 V
1180(%%)S
7368 V
1180(asm)S
1492(|)S
7488 V
1180(auto)S
1478(|)S
7903 V
720(September)S
1176(17,)S
(1996)200 1326 A
2681(()S
2723(26)S
2848(May)S
(1990)200 3057 A
3265())S
4940(Page)S
5161(20)S
8143 V
EP
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BP
/slant 0 def
/height 0 def
480 V
10 R
720(FLEX)S
981(()S
1023(1)S
1081())S
2756(Version)S
3100(2.3)S
4866(FLEX)S
5127(()S
5169(1)S
5227())S
960 V
1180(break)S
1504(|)S
1080 V
(...)75 1180 A
1280(etc)S
(...)75 1423 A
1200 V
(volatile)302 1180 A
1507(|)S
1320 V
1180(while)S
1504(/*)S
1607(it's)S
1761(a)S
1831(keyword)S
2208(*/)S
1560 V
1180([a-z]+)S
1504(|)S
1680 V
1180(.|\n)S
1428(/*)S
1531(it's)S
1685(not)S
1838(a)S
1908(keyword)S
2285(*/)S
1920 V
1080(Now,)S
1332(if)S
1425(it's)S
1585(guaranteed)S
2058(that)S
2240(there's)S
2546(exactly)S
2868(one)S
3044(word)S
3282(per)S
3442(line,)S
3649(then)S
3853(we)S
4002(can)S
4173(reduce)S
4473(the)S
4627(total)S
4838(number)S
5177(of)S
2040 V
1080(matches)S
1435(by)S
1560(a)S
1630(half)S
1812(by)S
1937(merging)S
2297(in)S
2400(the)S
(recognition)458 2548 A
3031(of)S
3140(newlines)S
3523(with)S
3727(that)S
3903(of)S
4012(the)S
4160(other)S
4392(tokens:)S
2280 V
1180(%%)S
2400 V
1180(asm\n)S
1520(|)S
2520 V
1180(auto\n)S
1506(|)S
2640 V
1180(break\n)S
1532(|)S
2760 V
(...)75 1180 A
1280(etc)S
(...)75 1423 A
2880 V
(volatile\n)380 1180 A
1585(|)S
3000 V
1180(while\n)S
1532(/*)S
1635(it's)S
1789(a)S
1859(keyword)S
2236(*/)S
3240 V
1180([a-z]+\n)S
1532(|)S
3360 V
1180(.|\n)S
1428(/*)S
1531(it's)S
1685(not)S
1838(a)S
1908(keyword)S
2285(*/)S
3600 V
1080(One)S
1279(has)S
1444(to)S
1553(be)S
1679(careful)S
1991(here,)S
2221(as)S
2336(we)S
2485(have)S
2706(now)S
(reintroduced)509 2910 A
3450(backtracking)S
4001(into)S
4188(the)S
4343(scanner.)S
4733(In)S
4849(particular,)S
3720 V
1080(while)S
10 I
1330(we)S
10 R
(know)223 1468 A
1717(that)S
1894(there)S
(will)157 2122 A
2305(never)S
2555(be)S
2676(any)S
2847(characters)S
3283(in)S
3387(the)S
(input)206 3536 A
3768(stream)S
4063(other)S
4296(than)S
4495(letters)S
4768(or)S
4878(newlines,)S
3840 V
10 I
1080(257ex)S
10 R
1246(can't)S
1475(256gure)S
1737(this)S
1909(out,)S
2089(and)S
2261(it)S
(will)157 2344 A
2528(plan)S
2728(for)S
2873(possibly)S
3234(needing)S
3579(backtracking)S
4126(when)S
4371(it)S
4454(has)S
4615(scanned)S
4966(a)S
5038(token)S
3960 V
1080(like)S
1272("auto")S
1568(and)S
1754(then)S
1968(the)S
2132(next)S
2346(character)S
2758(is)S
2866(something)S
3324(other)S
3571(than)S
3784(a)S
3869(newline)S
4228(or)S
4352(a)S
4437(letter.)S
4735(Previously)S
5205(it)S
4080 V
1080(would)S
1361(then)S
1564(just)S
1739(match)S
2015(the)S
2168("auto")S
2453(rule)S
2640(and)S
2815(be)S
(done,)220 2940 A
3190(but)S
3348(now)S
3551(it)S
3637(has)S
3801(no)S
3931("auto")S
4217(rule,)S
4430(only)S
4639(a)S
4715("auto\n")S
5079(rule.)S
4200 V
1080(To)S
1224(eliminate)S
1631(the)S
(possibility)418 1786 A
2236(of)S
2352(backtracking,)S
2929(we)S
3078(could)S
3332(either)S
(duplicate)369 3593 A
3993(all)S
4125(rules)S
4352(but)S
(without)307 4511 A
4849(256nal)S
5059(new-)S
4320 V
1080(lines,)S
1326(or,)S
1467(since)S
1706(we)S
1856(never)S
2112(expect)S
2407(to)S
(encounter)397 2517 A
2946(such)S
3162(an)S
(input)206 3289 A
3527(and)S
3704(therefore)S
(don't)212 4101 A
4345(how)S
4550(it's)S
4711(classi256ed,)S
5143(we)S
4440 V
1080(can)S
(introduce)380 1245 A
1650(one)S
1820(more)S
2052(catch-all)S
2425(rule,)S
2632(this)S
2802(one)S
2972(which)S
3243(doesn't)S
3564(include)S
3885(a)S
3955(newline:)S
4680 V
1180(%%)S