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b(*)e Fg(history)p 582 2355 V 21 w(get)p 680 2355 V 21
w(history)p 876 2355 V 21 w(state)j Ff(\(\))120 2417
y Fo(Return)16 b(a)f(structure)g(describing)i(the)e(curren)o(t)g(state)
f(of)h(the)g(input)i(history)l(.)1725 2599 y(F)l(unction)-1899
b Fh(void)20 b Fg(history)p 302 2599 V 20 w(set)p 393
2599 V 21 w(history)p 589 2599 V 21 w(state)j Ff(\()p
Fn(HISTORY_STATE)13 b(*state)p Ff(\))120 2661 y Fo(Set)i(the)h(state)e
(of)h(the)g(history)g(list)h(according)g(to)e Fj(state)p
Fo(.)p eop
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(History)1039 b(7)0 183 y Fi(2.3.2)30 b(History)15 b(List)g(Managemen)n
(t)62 322 y Fo(These)i(functions)h(manage)e(individual)k(en)o(tries)d
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384 y(list)f(itself.)1725 552 y(F)l(unction)-1899 b Fh(void)20
b Fg(add)p 219 552 18 3 v 20 w(history)j Ff(\()p Fn(char)14
b(*string)p Ff(\))120 614 y Fo(Place)j Fj(string)k Fo(at)16
b(the)g(end)i(of)e(the)g(history)h(list.)25 b(The)17
b(asso)q(ciated)g(data)f(\014eld)h(\(if)g(an)o(y\))f(is)h(set)g(to)120
677 y Fn(NULL)p Fo(.)1725 844 y(F)l(unction)-1899 b Fh(HIST_ENTRY)21
b(*)e Fg(remo)n(v)n(e)p 509 844 V 20 w(history)k Ff(\()p
Fn(int)14 b(which)p Ff(\))120 907 y Fo(Remo)o(v)o(e)d(history)g(en)o
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b(The)11 b(remo)o(v)o(ed)g(elemen)o(t)h(is)g(returned)120
969 y(so)j(y)o(ou)g(can)g(free)g(the)h(line,)g(data,)e(and)i(con)o
(taining)g(structure.)1725 1137 y(F)l(unction)-1899 b
Fh(HIST_ENTRY)21 b(*)e Fg(replace)p 505 1137 V 22 w(history)p
702 1137 V 20 w(en)n(try)24 b Ff(\()p Fn(int)14 b(which,)g(char)h
(*line,)f(char)208 1199 y(*data)p Ff(\))120 1261 y Fo(Mak)o(e)d(the)i
(history)f(en)o(try)g(at)f(o\013set)h Fj(whic)o(h)h Fo(ha)o(v)o(e)e
Fj(line)17 b Fo(and)12 b Fj(data)p Fo(.)19 b(This)12
b(returns)g(the)h(old)g(en)o(try)e(so)120 1324 y(y)o(ou)i(can)g(disp)q
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(returned.)1725 1491 y(F)l(unction)-1899 b Fh(void)20
b Fg(clear)p 245 1491 V 21 w(history)j Ff(\(\))120 1554
y Fo(Clear)15 b(the)h(history)f(list)h(b)o(y)f(deleting)i(all)f(the)f
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b Fg(sti\015e)p 245 1721 V 21 w(history)j Ff(\()p Fn(int)14
b(max)p Ff(\))120 1784 y Fo(Sti\015e)i(the)f(history)h(list,)f(remem)o
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1951 y(F)l(unction)-1899 b Fh(int)20 b Fg(unsti\015e)p
283 1951 V 21 w(history)i Ff(\(\))120 2014 y Fo(Stop)13
b(sti\015ing)h(the)f(history)l(.)19 b(This)14 b(returns)f(the)g
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b(The)120 2076 y(v)m(alue)c(is)g(p)q(ositiv)o(e)g(if)g(the)f(history)g
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2244 y(F)l(unction)-1899 b Fh(int)20 b Fg(history)p 276
2244 V 20 w(is)p 334 2244 V 21 w(sti\015ed)k Ff(\(\))120
2306 y Fo(Returns)16 b(non-zero)f(if)h(the)f(history)g(is)h(sti\015ed,)
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b(Ab)r(out)h(the)g(History)g(List)62 2670 y Fo(These)h(functions)g
(return)f(information)g(ab)q(out)g(the)h(en)o(tire)f(history)g(list)h
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8 9 bop 0 -58 a Fo(8)1497 b(GNU)15 b(History)g(Library)1725
183 y(F)l(unction)-1899 b Fh(HIST_ENTRY)21 b(**)e Fg(history)p
530 183 18 3 v 21 w(list)24 b Ff(\(\))120 246 y Fo(Return)e(a)e
Fn(NULL)h Fo(terminated)g(arra)o(y)f(of)g Fn(HIST_ENTRY)g
Fo(whic)o(h)i(is)f(the)g(curren)o(t)g(input)h(history)l(.)120
308 y(Elemen)o(t)16 b(0)f(of)f(this)i(list)g(is)g(the)f(b)q(eginning)i
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Fn(NULL)p Fo(.)1725 482 y(F)l(unction)-1899 b Fh(int)20
b Fg(where)p 250 482 V 20 w(history)j Ff(\(\))120 544
y Fo(Returns)16 b(the)f(o\013set)f(of)h(the)g(curren)o(t)g(history)g
(elemen)o(t.)1725 719 y(F)l(unction)-1899 b Fh(HIST_ENTRY)21
b(*)e Fg(curren)n(t)p 512 719 V 21 w(history)k Ff(\(\))120
781 y Fo(Return)14 b(the)g(history)g(en)o(try)f(at)h(the)g(curren)o(t)f
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Fo(.)120 843 y(If)h(there)h(is)f(no)h(en)o(try)e(there,)h(return)g(a)g
Fn(NULL)g Fo(p)q(oin)o(ter.)1725 1018 y(F)l(unction)-1899
b Fh(HIST_ENTRY)21 b(*)e Fg(history)p 504 1018 V 21 w(get)j
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(history)f(en)o(try)g(at)g(p)q(osition)i Fj(o\013set)p
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120 1142 y(en)o(try)g(there,)g(or)f(if)i Fj(o\013set)f
Fo(is)h(greater)e(than)h(the)h(history)f(length,)g(return)g(a)g
Fn(NULL)g Fo(p)q(oin)o(ter.)1725 1316 y(F)l(unction)-1899
b Fh(int)20 b Fg(history)p 276 1316 V 20 w(total)p 412
1316 V 22 w(b)n(ytes)j Ff(\(\))120 1379 y Fo(Return)17
b(the)f(n)o(um)o(b)q(er)g(of)g(b)o(ytes)g(that)f(the)h(primary)g
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1441 y(returns)e(the)g(sum)h(of)e(the)i(lengths)f(of)g(all)h(the)g
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b(Mo)n(ving)15 b(Around)h(the)f(History)g(List)62 1827
y Fo(These)h(functions)g(allo)o(w)f(the)g(curren)o(t)h(index)g(in)o(to)
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2001 y(F)l(unction)-1899 b Fh(int)20 b Fg(history)p 276
2001 V 20 w(set)p 367 2001 V 21 w(p)r(os)h Ff(\()p Fn(int)15
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b(*)e Fg(previous)p 540 2238 V 20 w(history)k Ff(\(\))120
2300 y Fo(Bac)o(k)16 b(up)h(the)g(curren)o(t)f(history)h(o\013set)e(to)
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o(ter)120 2362 y(to)f(that)f(en)o(try)l(.)20 b(If)15
b(there)g(is)h(no)f(previous)h(en)o(try)l(,)f(return)g(a)g
Fn(NULL)g Fo(p)q(oin)o(ter.)1725 2537 y(F)l(unction)-1899
b Fh(HIST_ENTRY)21 b(*)e Fg(next)p 439 2537 V 21 w(history)k
Ff(\(\))120 2599 y Fo(Mo)o(v)o(e)c(the)h(curren)o(t)g(history)f
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Fn(NULL)g Fo(p)q(oin)o(ter.)p eop
9 10 bop 0 -58 a Fo(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g
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382 y(ing)e(ma)o(y)g(b)q(e)g(p)q(erformed)g(b)q(oth)g(forw)o(ard)f(and)
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(b)q(eginning)i(of)e(the)h(history)f(en)o(try)l(.)1725
600 y(F)l(unction)-1899 b Fh(int)20 b Fg(history)p 276
600 18 3 v 20 w(searc)n(h)j Ff(\()p Fn(char)14 b(*string,)g(int)h
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724 y(then)14 b(the)f(searc)o(h)g(is)h(through)e(previous)i(en)o
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b Fj(string)k Fo(is)d(found,)120 786 y(then)f(the)g(curren)o(t)g
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y(and)e(a)g(-1)g(is)h(returned.)1725 1066 y(F)l(unction)-1899
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452 1066 V 21 w(pre\014x)i Ff(\()p Fn(char)15 b(*string,)f(int)g
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b(and)h(a)e(-1)h(is)h(returned.)1725 1532 y(F)l(unction)-1899
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452 1532 V 21 w(p)r(os)h Ff(\()p Fn(char)15 b(*string,)f(int)g
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1912 y Fi(2.3.6)30 b(Managing)14 b(the)i(History)f(File)62
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2545 y(F)l(unction)-1899 b Fh(int)20 b Fg(read)p 211
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2608 y Fo(Read)j(a)e(range)h(of)f(lines)j(from)d Fj(\014lename)p
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183 y(then)i(read)g(un)o(til)h(the)f(end)g(of)g(the)g(\014le.)25
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y(F)l(unction)-1899 b Fh(int)20 b Fg(history)p 276 987
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(eci\014er.)21 b(A)o(t)15 b(function)g(en)o(try)l(,)f
Fj(cindex)20 b Fo(p)q(oin)o(ts)15 b(to)f(the)h(index)h(in)o(to)120
370 y Fj(string)h Fo(where)d(the)f(history)h(ev)o(en)o(t)f(sp)q
(eci\014cation)i(b)q(egins.)20 b Fj(qc)o(har)d Fo(is)c(a)g(c)o
(haracter)g(that)g(is)h(allo)o(w)o(ed)120 432 y(to)h(end)g(the)h(ev)o
(en)o(t)f(sp)q(eci\014cation)i(in)f(addition)g(to)f(the)g(\\normal")g
(terminating)g(c)o(haracters.)1725 587 y(F)l(unction)-1899
b Fh(char)20 b(**)f Fg(history)p 373 587 V 21 w(tok)n(enize)25
b Ff(\()p Fn(char)14 b(*string)p Ff(\))120 649 y Fo(Return)k(an)f(arra)
o(y)f(of)h(tok)o(ens)f(parsed)i(out)e(of)h Fj(string)p
Fo(,)g(m)o(uc)o(h)h(as)e(the)i(shell)g(migh)o(t.)26 b(The)17
b(tok)o(ens)120 711 y(are)c(split)h(on)f(white)g(space)h(and)f(on)g
(the)g(c)o(haracters)f Fn(\(\)<>;&|$)p Fo(,)g(and)h(shell)i(quoting)e
(con)o(v)o(en)o(tions)120 774 y(are)i(ob)q(ey)o(ed.)0
983 y Fm(2.4)33 b(History)15 b(V)-6 b(ariables)62 1120
y Fo(This)16 b(section)g(describ)q(es)h(the)e(externally)h(visible)i(v)
m(ariables)e(exp)q(orted)g(b)o(y)f(the)g(GNU)g(History)g(Library)l(.)
1736 1275 y(V)l(ariable)-1899 b Fh(int)20 b Fg(history)p
276 1275 V 20 w(base)120 1337 y Fo(The)15 b(logical)i(o\013set)d(of)h
(the)g(\014rst)g(en)o(try)g(in)h(the)f(history)g(list.)1736
1491 y(V)l(ariable)-1899 b Fh(int)20 b Fg(history)p 276
1491 V 20 w(length)120 1554 y Fo(The)15 b(n)o(um)o(b)q(er)h(of)f(en)o
(tries)g(curren)o(tly)h(stored)f(in)h(the)f(history)g(list.)1736
1708 y(V)l(ariable)-1899 b Fh(int)20 b Fg(max)p 208 1708
V 19 w(input)p 360 1708 V 21 w(history)120 1771 y Fo(The)12
b(maxim)o(um)g(n)o(um)o(b)q(er)g(of)f(history)h(en)o(tries.)19
b(This)12 b(m)o(ust)f(b)q(e)h(c)o(hanged)g(using)h Fn(stifle_history)
120 1833 y(\(\))p Fo(.)1736 1987 y(V)l(ariable)-1899
b Fh(char)20 b Fg(history)p 302 1987 V 20 w(expansion)p
569 1987 V 21 w(c)n(har)120 2050 y Fo(The)15 b(c)o(haracter)g(that)f
(starts)g(a)h(history)g(ev)o(en)o(t.)20 b(The)15 b(default)h(is)g(`)p
Fn(!)p Fo('.)1736 2204 y(V)l(ariable)-1899 b Fh(char)20
b Fg(history)p 302 2204 V 20 w(subst)p 454 2204 V 20
w(c)n(har)120 2266 y Fo(The)13 b(c)o(haracter)e(that)h(in)o(v)o(ok)o
(es)g(w)o(ord)g(substitution)h(if)g(found)g(at)e(the)i(start)e(of)h(a)g
(line.)21 b(The)12 b(default)120 2329 y(is)k(`)p Fn(^)p
Fo('.)1736 2483 y(V)l(ariable)-1899 b Fh(char)20 b Fg(history)p
302 2483 V 20 w(commen)n(t)p 552 2483 V 19 w(c)n(har)120
2545 y Fo(During)12 b(tok)o(enization,)h(if)f(this)h(c)o(haracter)e(is)
i(seen)f(as)g(the)g(\014rst)f(c)o(haracter)g(of)h(a)g(w)o(ord,)f(then)i
(it)f(and)120 2608 y(all)19 b(subsequen)o(t)g(c)o(haracters)e(up)h(to)g
(a)f(newline)j(are)e(ignored,)h(suppressing)g(history)f(expansion)120
2670 y(for)d(the)g(remainder)h(of)f(the)g(line.)21 b(This)16
b(is)g(disabled)h(b)o(y)e(default.)p eop
12 13 bop 0 -58 a Fo(12)1474 b(GNU)15 b(History)g(Library)1736
183 y(V)l(ariable)-1899 b Fh(char)20 b(*)f Fg(history)p
347 183 18 3 v 21 w(no)p 429 183 V 20 w(expand)p 629
183 V 20 w(c)n(hars)120 246 y Fo(The)f(list)g(of)g(c)o(haracters)e
(whic)o(h)j(inhibit)h(history)d(expansion)i(if)f(found)g(immediately)h
(follo)o(wing)120 308 y Fj(history)p 261 308 14 2 v 16
w(expansion)p 472 308 V 18 w(c)o(har)p Fo(.)g(The)d(default)f(is)h
(whitespace)g(and)g(`)p Fn(=)p Fo('.)1736 469 y(V)l(ariable)-1899
b Fh(char)20 b(*)f Fg(history)p 347 469 18 3 v 21 w(searc)n(h)p
524 469 V 20 w(delimiter)p 768 469 V 23 w(c)n(hars)120
532 y Fo(The)d(list)g(of)f(additional)i(c)o(haracters)d(whic)o(h)i(can)
g(delimit)h(a)e(history)g(searc)o(h)h(string,)f(in)h(addition)120
594 y(to)f(whitespace,)g(`)p Fn(:)p Fo(')f(and)i(`)p
Fn(?)p Fo(')e(in)i(the)f(case)h(of)e(a)h(substring)h(searc)o(h.)k(The)
15 b(default)h(is)g(empt)o(y)l(.)1736 755 y(V)l(ariable)-1899
b Fh(int)20 b Fg(history)p 276 755 V 20 w(quotes)p 458
755 V 21 w(inhibit)p 642 755 V 23 w(expansion)120 818
y Fo(If)e(non-zero,)f(single-quoted)i(w)o(ords)e(are)g(not)g(scanned)h
(for)e(the)i(history)f(expansion)h(c)o(haracter.)120
880 y(The)d(default)h(v)m(alue)h(is)e(0.)1736 1041 y(V)l(ariable)-1899
b Fh(Function)20 b(*)g Fg(history)p 452 1041 V 20 w(inhibit)p
635 1041 V 23 w(expansion)p 905 1041 V 21 w(function)120
1104 y Fo(This)f(should)h(b)q(e)f(set)f(to)g(the)h(address)f(of)g(a)h
(function)g(that)f(tak)o(es)f(t)o(w)o(o)h(argumen)o(ts:)25
b(a)19 b Fn(char)14 b(*)120 1166 y Fo(\()p Fj(string)t
Fo(\))c(and)i(an)f(in)o(teger)g(index)h(in)o(to)f(that)g(string)g(\()p
Fj(i)r Fo(\).)19 b(It)11 b(should)h(return)f(a)g(non-zero)g(v)m(alue)h
(if)g(the)120 1228 y(history)17 b(expansion)h(starting)e(at)h
Fj(string[i])h Fo(should)g(not)f(b)q(e)h(p)q(erformed;)f(zero)g(if)h
(the)f(expansion)120 1290 y(should)i(b)q(e)f(done.)28
b(It)18 b(is)g(in)o(tended)h(for)e(use)h(b)o(y)g(applications)h(lik)o
(e)g(Bash)f(that)f(use)h(the)g(history)120 1353 y(expansion)e(c)o
(haracter)f(for)f(additional)j(purp)q(oses.)j(By)c(default,)f(this)h(v)
m(ariable)g(is)g(set)f(to)f(NULL.)0 1576 y Fm(2.5)33
b(History)15 b(Programming)h(Example)62 1713 y Fo(The)g(follo)o(wing)g
(program)e(demonstrates)g(simple)j(use)e(of)g(the)g(GNU)g(History)g
(Library)l(.)120 1840 y Fn(main)23 b(\(\))120 1892 y({)168
1944 y(char)g(line[1024],)f(*t;)168 1995 y(int)h(len,)g(done)h(=)g(0;)
168 2099 y(line[0])f(=)g(0;)168 2203 y(using_history)f(\(\);)168
2255 y(while)h(\(!done\))215 2307 y({)263 2359 y(printf)g(\("history$)g
("\);)263 2411 y(fflush)g(\(stdout\);)263 2462 y(t)h(=)g(fgets)f
(\(line,)g(sizeof)g(\(line\))g(-)h(1,)f(stdin\);)263
2514 y(if)h(\(t)f(&&)h(*t\))311 2566 y({)359 2618 y(len)f(=)h(strlen)f
(\(t\);)359 2670 y(if)g(\(t[len)g(-)h(1])g(==)f('\\n'\))p
eop
13 14 bop 0 -58 a Fo(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g
(History)1017 b(13)406 183 y Fn(t[len)24 b(-)f(1])h(=)g('\\0';)311
235 y(})263 339 y(if)g(\(!t\))311 391 y(strcpy)f(\(line,)g("quit"\);)
263 495 y(if)h(\(line[0]\))311 546 y({)359 598 y(char)f(*expansion;)359
650 y(int)g(result;)359 754 y(result)g(=)g(history_expand)f(\(line,)h
(&expansion\);)359 806 y(if)g(\(result\))406 858 y(fprintf)g(\(stderr,)
g("\045s\\n",)g(expansion\);)359 962 y(if)g(\(result)g(<)h(0)g(||)f
(result)g(==)h(2\))406 1013 y({)454 1065 y(free)f(\(expansion\);)454
1117 y(continue;)406 1169 y(})359 1273 y(add_history)f(\(expansion\);)
359 1325 y(strncpy)h(\(line,)g(expansion,)f(sizeof)h(\(line\))g(-)h
(1\);)359 1377 y(free)f(\(expansion\);)311 1429 y(})263
1532 y(if)h(\(strcmp)f(\(line,)g("quit"\))g(==)g(0\))311
1584 y(done)g(=)h(1;)263 1636 y(else)f(if)h(\(strcmp)f(\(line,)g
("save"\))g(==)h(0\))311 1688 y(write_history)e(\("history_file"\);)263
1740 y(else)h(if)h(\(strcmp)f(\(line,)g("read"\))g(==)h(0\))311
1792 y(read_history)e(\("history_file"\);)263 1844 y(else)h(if)h
(\(strcmp)f(\(line,)g("list"\))g(==)h(0\))311 1896 y({)359
1947 y(register)e(HIST_ENTRY)h(**the_list;)359 1999 y(register)f(int)i
(i;)359 2103 y(the_list)e(=)i(history_list)e(\(\);)359
2155 y(if)h(\(the_list\))406 2207 y(for)h(\(i)f(=)h(0;)g(the_list[i];)e
(i++\))454 2259 y(printf)h(\("\045d:)g(\045s\\n",)g(i)h(+)g
(history_base,)e(the_list[i]->line\);)311 2311 y(})263
2363 y(else)h(if)h(\(strncmp)f(\(line,)g("delete",)g(6\))g(==)h(0\))311
2414 y({)359 2466 y(int)f(which;)359 2518 y(if)g(\(\(sscanf)g(\(line)g
(+)h(6,)f("\045d",)h(&which\)\))e(==)i(1\))406 2570 y({)454
2622 y(HIST_ENTRY)f(*entry)g(=)g(remove_history)f(\(which\);)p
eop
14 15 bop 0 -58 a Fo(14)1474 b(GNU)15 b(History)g(Library)454
183 y Fn(if)24 b(\(!entry\))502 235 y(fprintf)f(\(stderr,)f("No)i(such)
f(entry)g(\045d\\n",)g(which\);)454 287 y(else)502 339
y({)550 391 y(free)g(\(entry->line\);)550 443 y(free)g(\(entry\);)502
495 y(})406 546 y(})359 598 y(else)406 650 y({)454 702
y(fprintf)g(\(stderr,)g("non-numeric)f(arg)h(given)h(to)f
(`delete'\\n"\);)406 754 y(})311 806 y(})215 858 y(})120
910 y(})p eop
15 16 bop 0 -58 a Fo(App)q(endix)17 b(A:)e(Concept)g(Index)1346
b(15)0 183 y Fk(App)r(endix)13 b(A)41 b(Concept)15 b(Index)0
430 y Fm(A)0 496 y Fe(anc)o(hored)f(searc)o(h)5 b Fd(.)i(.)f(.)g(.)g(.)
g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h
(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)18
b Fe(9)0 604 y Fm(E)0 670 y Fe(ev)o(en)o(t)13 b(designators)g
Fd(.)6 b(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g
(.)23 b Fe(1)1015 430 y Fm(H)1015 496 y Fe(history)15
b(ev)o(en)o(ts)5 b Fd(.)i(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)18 b Fe(1)1015 554
y(history)d(expansion)8 b Fd(.)h(.)d(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)h(.)f(.)g(.)g(.)g(.)21 b Fe(1)1015 612 y(History)14
b(Searc)o(hing)7 b Fd(.)h(.)e(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)20 b Fe(9)p eop
16 17 bop 0 -58 a Fo(16)1474 b(GNU)15 b(History)g(Library)p
eop
17 18 bop 0 -58 a Fo(App)q(endix)17 b(B:)e(F)l(unction)h(and)g(V)l
(ariable)g(Index)1069 b(17)0 183 y Fk(App)r(endix)13
b(B)41 b(F)-7 b(unction)15 b(and)g(V)-7 b(ariable)14
b(Index)0 430 y Fm(A)0 496 y Fc(add)p 62 496 12 2 v 13
w(history)8 b Fd(.)s(.)e(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)20 b Fe(7)0 554 y
Fc(append)p 122 554 V 12 w(history)9 b Fd(.)d(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)24 b Fe(10)0
679 y Fm(C)0 745 y Fc(clear)p 102 745 V 12 w(history)5
b Fd(.)t(.)h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)18 b Fe(7)0 803 y Fc(current)p 142 803
V 11 w(history)9 b Fd(.)d(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)24 b Fe(8)0 928 y Fm(G)0 994 y Fc(get)p
62 994 V 13 w(history)p 215 994 V 11 w(event)9 b Fd(.)d(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)23 b Fe(11)0 1119
y Fm(H)0 1185 y Fc(history)p 142 1185 V 11 w(arg)p 213
1185 V 13 w(extract)8 b Fd(.)t(.)e(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)21 b Fe(10)0 1243 y Fc(history)p 142 1243 V 11 w(base)e
Fd(.)6 b(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h
(.)f(.)g(.)20 b Fe(11)0 1301 y Fc(history)p 142 1301
V 11 w(comment)p 293 1301 V 12 w(char)g Fd(.)6 b(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)h(.)21 b Fe(11)0 1359 y Fc(history)p 142 1359
V 11 w(expand)10 b Fd(.)c(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
h(.)f(.)g(.)g(.)g(.)24 b Fe(10)0 1418 y Fc(history)p
142 1418 V 11 w(expansion)p 333 1418 V 11 w(char)17 b
Fd(.)7 b(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)
f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)19 b Fe(11)0 1476
y Fc(history)p 142 1476 V 11 w(get)8 b Fd(.)d(.)h(.)g(.)g(.)g(.)g(.)h
(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)20
b Fe(8)0 1534 y Fc(history)p 142 1534 V 11 w(get)p 213
1534 V 13 w(history)p 366 1534 V 12 w(state)t Fd(.)t(.)6
b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)17 b Fe(6)0 1592 y Fc(history)p
142 1592 V 11 w(inhibit)p 293 1592 V 12 w(expansion)p
484 1592 V 10 w(function)k Fd(.)6 b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h
(.)f(.)23 b Fe(12)0 1650 y Fc(history)p 142 1650 V 11
w(is)p 193 1650 V 14 w(stifled)7 b Fd(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)23 b Fe(7)0 1708 y Fc(history)p
142 1708 V 11 w(length)16 b Fd(.)6 b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)
f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)18 b Fe(11)0 1766 y Fc(history)p
142 1766 V 11 w(list)7 b Fd(.)t(.)g(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)19 b Fe(8)0 1824
y Fc(history)p 142 1824 V 11 w(no)p 193 1824 V 14 w(expand)p
327 1824 V 12 w(chars)f Fd(.)6 b(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)20
b Fe(12)0 1883 y Fc(history)p 142 1883 V 11 w(quotes)p
273 1883 V 12 w(inhibit)p 425 1883 V 12 w(expansion)14
b Fd(.)6 b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)17
b Fe(12)0 1941 y Fc(history)p 142 1941 V 11 w(search)t
Fd(.)t(.)6 b(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)17 b Fe(9)0 1999 y Fc(history)p 142 1999 V
11 w(search)p 273 1999 V 12 w(delimiter)p 465 1999 V
11 w(chars)h Fd(.)6 b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g
(.)g(.)g(.)g(.)20 b Fe(12)0 2057 y Fc(history)p 142 2057
V 11 w(search)p 273 2057 V 12 w(pos)9 b Fd(.)d(.)g(.)g(.)g(.)h(.)f(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)23 b Fe(9)0 2115 y Fc(history)p
142 2115 V 11 w(search)p 273 2115 V 12 w(prefix)6 b Fd(.)t(.)g(.)g(.)h
(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)19 b Fe(9)0 2173 y Fc(history)p
142 2173 V 11 w(set)p 213 2173 V 13 w(history)p 366 2173
V 12 w(state)t Fd(.)t(.)6 b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)17 b Fe(6)1015
430 y Fc(history)p 1157 430 V 12 w(set)p 1229 430 V 13
w(pos)5 b Fd(.)g(.)h(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)19 b Fe(8)1015 488 y Fc(history)p 1157
488 V 12 w(subst)p 1269 488 V 12 w(char)k Fd(.)6 b(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)25 b Fe(11)1015 546 y Fc(history)p
1157 546 V 12 w(tokenize)9 b Fd(.)s(.)d(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)
f(.)g(.)g(.)g(.)g(.)22 b Fe(11)1015 604 y Fc(history)p
1157 604 V 12 w(total)p 1269 604 V 12 w(bytes)9 b Fd(.)t(.)d(.)g(.)g(.)
g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h
(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)22 b Fe(8)1015 662
y Fc(history)p 1157 662 V 12 w(truncate)p 1329 662 V
11 w(file)5 b Fd(.)g(.)h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)
f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)19
b Fe(10)1015 770 y Fm(M)1015 836 y Fc(max)p 1077 836
V 13 w(input)p 1190 836 V 13 w(history)14 b Fd(.)6 b(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)17 b Fe(11)1015 944
y Fm(N)1015 1011 y Fc(next)p 1097 1011 V 13 w(history)7
b Fd(.)s(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)20 b Fe(8)1015 1119 y Fm(P)1015 1185
y Fc(previous)p 1177 1185 V 12 w(history)7 b Fd(.)f(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)23 b Fe(8)1015
1293 y Fm(R)1015 1359 y Fc(read)p 1097 1359 V 13 w(history)7
b Fd(.)s(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)20 b Fe(9)1015 1418 y Fc(read)p 1097
1418 V 13 w(history)p 1250 1418 V 11 w(range)9 b Fd(.)d(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)23 b Fe(9)1015 1476
y Fc(remove)p 1137 1476 V 12 w(history)t Fd(.)t(.)6 b(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)17
b Fe(7)1015 1534 y Fc(replace)p 1157 1534 V 12 w(history)p
1309 1534 V 11 w(entry)6 b Fd(.)f(.)h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)
f(.)19 b Fe(7)1015 1642 y Fm(S)1015 1708 y Fc(stifle)p
1137 1708 V 12 w(history)t Fd(.)t(.)6 b(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)17 b Fe(7)1015 1816
y Fm(U)1015 1883 y Fc(unstifle)p 1177 1883 V 12 w(history)7
b Fd(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)23
b Fe(7)1015 1941 y Fc(using)p 1117 1941 V 13 w(history)5
b Fd(.)s(.)h(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)h(.)f(.)g(.)18 b Fe(6)1015 2049 y Fm(W)1015 2115 y
Fc(where)p 1117 2115 V 13 w(history)5 b Fd(.)s(.)h(.)g(.)h(.)f(.)g(.)g
(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)18
b Fe(8)1015 2173 y Fc(write)p 1117 2173 V 13 w(history)t
Fd(.)s(.)6 b(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g
(.)g(.)h(.)17 b Fe(10)p eop
18 19 bop 0 -58 a Fo(18)1474 b(GNU)15 b(History)g(Library)p
eop
-1 20 bop 1937 -58 a Fo(i)0 183 y Fk(T)-7 b(able)15 b(of)g(Con)n(ten)n
(ts)0 358 y Fm(1)67 b(Using)22 b(History)h(In)n(teractiv)n(ely)15
b Fb(.)e(.)c(.)h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)f(.)h(.)g(.)g(.)g(.)g(.)
g(.)g(.)g(.)g(.)f(.)h(.)g(.)37 b Fm(1)149 435 y Fo(1.1)45
b(In)o(teractiv)o(e)15 b(History)g(Expansion)9 b Fa(.)g(.)e(.)h(.)f(.)h
(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)23 b
Fo(1)299 498 y(1.1.1)44 b(Ev)o(en)o(t)14 b(Designators)d
Fa(.)d(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
f(.)h(.)26 b Fo(1)299 560 y(1.1.2)44 b(W)l(ord)15 b(Designators)t
Fa(.)7 b(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)h(.)f(.)19 b Fo(2)299 622 y(1.1.3)44 b(Mo)q(di\014ers)15
b Fa(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)29 b Fo(2)0
747 y Fm(2)67 b(Programming)23 b(with)g(GNU)f(History)11
b Fb(.)f(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)f(.)h(.)g(.)g(.)g(.)g(.)g(.)
g(.)33 b Fm(5)149 825 y Fo(2.1)45 b(In)o(tro)q(duction)16
b(to)f(History)9 b Fa(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)24 b Fo(5)149
887 y(2.2)45 b(History)15 b(Storage)c Fa(.)c(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)f(.)h(.)f(.)h(.)26 b Fo(5)149 949 y(2.3)45 b(History)15
b(F)l(unctions)c Fa(.)e(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)
f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)26
b Fo(6)299 1011 y(2.3.1)44 b(Initializing)18 b(History)d(and)h(State)e
(Managemen)o(t)g Fa(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)29 b Fo(6)299 1074 y(2.3.2)44 b(History)15 b(List)h(Managemen)o
(t)d Fa(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)28
b Fo(7)299 1136 y(2.3.3)44 b(Information)15 b(Ab)q(out)g(the)h(History)
f(List)c Fa(.)d(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)g(.)f(.)h(.)f(.)h(.)25 b Fo(7)299 1198 y(2.3.4)44
b(Mo)o(ving)15 b(Around)g(the)g(History)g(List)10 b Fa(.)f(.)e(.)h(.)f
(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)f(.)25 b Fo(8)299 1260 y(2.3.5)44 b(Searc)o(hing)16
b(the)f(History)g(List)7 b Fa(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)
f(.)h(.)21 b Fo(9)299 1323 y(2.3.6)44 b(Managing)15 b(the)g(History)g
(File)5 b Fa(.)k(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)
f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)20
b Fo(9)299 1385 y(2.3.7)44 b(History)15 b(Expansion)8
b Fa(.)g(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f
(.)h(.)23 b Fo(10)149 1447 y(2.4)45 b(History)15 b(V)l(ariables)5
b Fa(.)k(.)e(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)
f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h
(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)20 b Fo(11)149
1510 y(2.5)45 b(History)15 b(Programming)f(Example)6
b Fa(.)j(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)
h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)21
b Fo(12)0 1634 y Fm(App)r(endix)j(A)67 b(Concept)22 b(Index)7
b Fb(.)k(.)f(.)g(.)g(.)g(.)g(.)f(.)h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)f(.)
h(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)29 b Fm(15)0 1774 y(App)r(endix)24
b(B)67 b(F)-6 b(unction)25 b(and)e(V)-6 b(ariable)24
b(Index)13 b Fb(.)d(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)g(.)35
b Fm(17)p eop
-2 21 bop 0 -58 a Fo(ii)1496 b(GNU)15 b(History)g(Library)p
eop end
userdict /end-hook known{end-hook}if