history_3.ps

在非GUI环境下

506.4 Q(wed immediately by a ne)-.25 E(wline.)-.25 E/F4 12/Times-Bold@0
SF(^)108 523.4 Q F3(string1)-5 I F4(^)5 I F3(string2)-5 I F4(^)5 I F0
2.63(Quick substitution.)144 530.4 R 2.629
(Repeat the last command, replacing)7.629 F F3(string1)5.469 E F0(with)
5.129 E F3(string2)5.129 E F0 7.629(.E).02 G(qui)-7.629 E -.25(va)-.25 G
2.629(lent to).25 F -.74(``)144 542.4 S(!!:s/).74 E F3(string1)A F0(/)A
F3(string2)A F0(/')A 2.5('\()-.74 G(see)-2.5 E F2(Modi\214ers)2.5 E F0
(belo)2.5 E(w\).)-.25 E F2(!#)108 554.4 Q F0
(The entire command line typed so f)27.67 E(ar)-.1 E(.)-.55 E F2 -.75
(Wo)87 571.2 S(rd Designators).75 E F0 -.8(Wo)108 583.2 S 1.313
(rd designators are used to select desired w).8 F 1.314(ords from the e)
-.1 F -.15(ve)-.25 G 3.814(nt. A).15 F F2(:)3.814 E F0 1.314
(separates the e)3.814 F -.15(ve)-.25 G 1.314(nt speci\214cation).15 F
.53(from the w)108 595.2 R .529(ord designator)-.1 F 5.529(.I)-.55 G
3.029(tm)-5.529 G .529(ay be omitted if the w)-3.029 F .529
(ord designator be)-.1 F .529(gins with a)-.15 F F2(^)3.029 E F0(,)A F2
($)3.029 E F0(,)A F2(*)3.029 E F0(,)A F2<ad>3.029 E F0 3.029(,o)C(r)
-3.029 E F2(%)3.029 E F0 5.529(.W)C(ords)-6.329 E 1.3
(are numbered from the be)108 607.2 R 1.3
(ginning of the line, with the \214rst w)-.15 F 1.301
(ord being denoted by 0 \(zero\).)-.1 F -.8(Wo)6.301 G 1.301(rds are).8
F(inserted into the current line separated by single spaces.)108 619.2 Q
F2 2.5(0\()108 636 S(zer)-2.5 E(o\))-.18 E F0(The zeroth w)144 648 Q 2.5
(ord. F)-.1 F(or the shell, this is the command w)-.15 E(ord.)-.1 E F3
(n)108.36 660 Q F0(The)30.64 E F3(n)2.5 E F0(th w)A(ord.)-.1 E F2(^)108
672 Q F0(The \214rst ar)32.67 E 2.5(gument. That)-.18 F(is, w)2.5 E
(ord 1.)-.1 E F2($)108 684 Q F0(The last ar)31 E(gument.)-.18 E F2(%)108
696 Q F0(The w)26 E(ord matched by the most recent `?)-.1 E F3(string)A
F0(?' search.)A F3(x)108.77 708 Q F2<ad>A F3(y)A F0 2.5(Ar)20.65 G
(ange of w)-2.5 E(ords; `\255)-.1 E F3(y)A F0 2.5('a)C(bbre)-2.5 E
(viates `0\255)-.25 E F3(y)A F0('.)A(GNU History 5.0)72 768 Q
(2003 July 31)139.005 E(1)203.165 E 0 Cg EP
%%Page: 2 2
%%BeginPageSetup
BP
%%EndPageSetup
/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F
(OR)-.18 E(Y\(3\))-.65 E/F1 10/Times-Bold@0 SF(*)108 84 Q F0 .316
(All of the w)31 F .316(ords b)-.1 F .316(ut the zeroth.)-.2 F .315
(This is a synon)5.315 F .315(ym for `)-.15 F/F2 10/Times-Italic@0 SF
(1\255$)A F0 2.815('. It)B .315(is not an error to use)2.815 F F1(*)
2.815 E F0 .315(if there is)2.815 F(just one w)144 96 Q(ord in the e)-.1
E -.15(ve)-.25 G(nt; the empty string is returned in that case.).15 E F1
(x*)108 108 Q F0(Abbre)26 E(viates)-.25 E F2(x\255$)2.5 E F0(.)A F1
<78ad>108 120 Q F0(Abbre)25.3 E(viates)-.25 E F2(x\255$)2.5 E F0(lik)2.5
E(e)-.1 E F1(x*)2.5 E F0 2.5(,b)C(ut omits the last w)-2.7 E(ord.)-.1 E
(If a w)108 136.8 Q(ord designator is supplied without an e)-.1 E -.15
(ve)-.25 G(nt speci\214cation, the pre).15 E
(vious command is used as the e)-.25 E -.15(ve)-.25 G(nt.).15 E F1
(Modi\214ers)87 153.6 Q F0 .183(After the optional w)108 165.6 R .183
(ord designator)-.1 F 2.683(,t)-.4 G .184
(here may appear a sequence of one or more of the follo)-2.683 F .184
(wing modi\214ers,)-.25 F(each preceded by a `:'.)108 177.6 Q F1(h)108
194.4 Q F0(Remo)30.44 E .3 -.15(ve a t)-.15 H
(railing \214le name component, lea).15 E(ving only the head.)-.2 E F1
(t)108 206.4 Q F0(Remo)32.67 E .3 -.15(ve a)-.15 H
(ll leading \214le name components, lea).15 E(ving the tail.)-.2 E F1(r)
108 218.4 Q F0(Remo)31.56 E .3 -.15(ve a t)-.15 H(railing suf).15 E
(\214x of the form)-.25 E F2(.xxx)2.5 E F0 2.5(,l)C(ea)-2.5 E
(ving the basename.)-.2 E F1(e)108 230.4 Q F0(Remo)31.56 E .3 -.15(ve a)
-.15 H(ll b).15 E(ut the trailing suf)-.2 E(\214x.)-.25 E F1(p)108 242.4
Q F0(Print the ne)30.44 E 2.5(wc)-.25 G(ommand b)-2.5 E(ut do not e)-.2
E -.15(xe)-.15 G(cute it.).15 E F1(q)108 254.4 Q F0
(Quote the substituted w)30.44 E(ords, escaping further substitutions.)
-.1 E F1(x)108 266.4 Q F0(Quote the substituted w)31 E(ords as with)-.1
E F1(q)2.5 E F0 2.5(,b)C(ut break into w)-2.7 E(ords at)-.1 E F1(blanks)
2.5 E F0(and ne)2.5 E(wlines.)-.25 E F1(s/)108 278.4 Q F2(old)A F1(/)A
F2(ne)A(w)-.15 E F1(/)A F0(Substitute)144 290.4 Q F2(ne)3.082 E(w)-.15 E
F0 .221(for the \214rst occurrence of)3.032 F F2(old)2.951 E F0 .221
(in the e)3.491 F -.15(ve)-.25 G .221(nt line.).15 F(An)5.221 E 2.721
(yd)-.15 G .221(elimiter can be used in place)-2.721 F .616(of /.)144
302.4 R .617
(The \214nal delimiter is optional if it is the last character of the e)
5.616 F -.15(ve)-.25 G .617(nt line.).15 F .617(The delimiter may)5.617
F .666(be quoted in)144 314.4 R F2(old)3.396 E F0(and)3.936 E F2(ne)
3.526 E(w)-.15 E F0 .666(with a single backslash.)3.476 F .666
(If & appears in)5.666 F F2(ne)3.166 E(w)-.15 E F0 3.166(,i).31 G 3.166
(ti)-3.166 G 3.166(sr)-3.166 G .666(eplaced by)-3.166 F F2(old)3.166 E
F0 5.666(.A).77 G .274(single backslash will quote the &.)144 326.4 R
(If)5.274 E F2(old)3.004 E F0 .274(is null, it is set to the last)3.544
F F2(old)3.005 E F0 .275(substituted, or)3.545 F 2.775(,i)-.4 G 2.775
(fn)-2.775 G 2.775(op)-2.775 G(re)-2.775 E(vi-)-.25 E
(ous history substitutions took place, the last)144 338.4 Q F2(string)
2.84 E F0(in a)2.72 E F1(!?)2.5 E F2(string)A F1([?])A F0(search.)5 E F1
(&)108 350.4 Q F0(Repeat the pre)27.67 E(vious substitution.)-.25 E F1
(g)108 362.4 Q F0 .398(Cause changes to be applied o)31 F -.15(ve)-.15 G
2.898(rt).15 G .398(he entire e)-2.898 F -.15(ve)-.25 G .398(nt line.)
.15 F .397(This is used in conjunction with `)5.398 F F1(:s)A F0 2.897
('\()C(e.g.,)-2.897 E(`)144 374.4 Q F1(:gs/)A F2(old)A F1(/)A F2(ne)A(w)
-.15 E F1(/)A F0 1.218('\) or `)B F1(:&)A F0 3.718('. If)B 1.218
(used with `)3.718 F F1(:s)A F0 1.218(', an)B 3.718(yd)-.15 G 1.219
(elimiter can be used in place of /, and the \214nal)-3.718 F .09
(delimiter is optional if it is the last character of the e)144 386.4 R
-.15(ve)-.25 G .089(nt line.).15 F(An)5.089 E F1(a)2.589 E F0 .089
(may be used as a synon)2.589 F .089(ym for)-.15 F F1(g)144 398.4 Q F0
(.)A F1(G)108 410.4 Q F0(Apply the follo)28.22 E(wing `)-.25 E F1(s)A F0
2.5('m)C(odi\214er once to each w)-2.5 E(ord in the e)-.1 E -.15(ve)-.25
G(nt line.).15 E/F3 10.95/Times-Bold@0 SF(PR)72 427.2 Q
(OGRAMMING WITH HIST)-.329 E(OR)-.197 E 2.738(YF)-.383 G(UNCTIONS)-2.738
E F0(This section describes ho)108 439.2 Q 2.5(wt)-.25 G 2.5(ou)-2.5 G
(se the History library in other programs.)-2.5 E F1(Intr)87 456 Q
(oduction to History)-.18 E F0 .796
(The programmer using the History library has a)108 468 R -.25(va)-.2 G
.797(ilable functions for remembering lines on a history list,).25 F
.308(associating arbitrary data with a line, remo)108 480 R .308
(ving lines from the list, searching through the list for a line con-)
-.15 F .303(taining an arbitrary te)108 492 R .303
(xt string, and referencing an)-.15 F 2.803(yl)-.15 G .303
(ine in the list directly)-2.803 F 5.303(.I)-.65 G 2.803(na)-5.303 G
.303(ddition, a history)-2.803 F F2 -.2(ex)2.803 G(pansion).2 E F0
(function is a)108 504 Q -.25(va)-.2 G(ilable which pro).25 E
(vides for a consistent user interf)-.15 E(ace across dif)-.1 E
(ferent programs.)-.25 E .059(The user using programs written with the \
History library has the bene\214t of a consistent user interf)108 520.8
R .058(ace with a)-.1 F .917(set of well-kno)108 532.8 R .917
(wn commands for manipulating the te)-.25 F .917(xt of pre)-.15 F .917
(vious lines and using that te)-.25 F .917(xt in ne)-.15 F 3.418(wc)-.25
G(om-)-3.418 E 4.184(mands. The)108 544.8 R 1.684(basic history manipul\
ation commands are identical to the history substitution pro)4.184 F
1.683(vided by)-.15 F F1(bash)108 556.8 Q F0(.)A .903
(If the programmer desires, he can use the Readline library)108 573.6 R
3.403(,w)-.65 G .904(hich includes some history manipulation by)-3.403 F
(def)108 585.6 Q(ault, and has the added adv)-.1 E
(antage of command line editing.)-.25 E .39(Before declaring an)108
602.4 R 2.89(yf)-.15 G .39(unctions using an)-2.89 F 2.89(yf)-.15 G .39
(unctionality the History library pro)-2.89 F .39
(vides in other code, an appli-)-.15 F .066
(cation writer should include the \214le)108 614.4 R F2(<r)4.232 E
(eadline/history)-.37 E(.h>)-.55 E F0 .067(in an)4.232 F 2.567<798c>-.15
G .067(le that uses the History library')-2.567 F 2.567(sf)-.55 G
(eatures.)-2.567 E .539(It supplies e)108 626.4 R .538
(xtern declarations for all of the library')-.15 F 3.038(sp)-.55 G .538
(ublic functions and v)-3.038 F .538(ariables, and declares all of the)
-.25 F(public data structures.)108 638.4 Q F1(History Storage)87 667.2 Q
F0(The history list is an array of history entries.)108 679.2 Q 2.5(Ah)5
G(istory entry is declared as follo)-2.5 E(ws:)-.25 E F2(typedef void *)
108 696 Q F1(histdata_t;)2.5 E F0(typedef struct _hist_entry {)108 712.8
Q(char *line;)113 724.8 Q(GNU History 5.0)72 768 Q(2003 July 31)139.005
E(2)203.165 E 0 Cg EP
%%Page: 3 3
%%BeginPageSetup
BP
%%EndPageSetup
/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F
(OR)-.18 E(Y\(3\))-.65 E(char *timestamp;)113 84 Q(histdata_t data;)113
96 Q 2.5(}H)108 108 S(IST_ENTR)-2.5 E -.92(Y;)-.65 G
(The history list itself might therefore be declared as)108 124.8 Q/F1
10/Times-Italic@0 SF(HIST_ENTR)108 141.6 Q 2.5(Y*)-.18 G(*)-2.5 E/F2 10
/Times-Bold@0 SF(the_history_list;)2.5 E F0(The state of the History li\
brary is encapsulated into a single structure:)108 158.4 Q(/*)108 175.2
Q 2.5(*As)110.5 187.2 S
(tructure used to pass around the current state of the history)-2.5 E(.)
-.65 E(*/)110.5 199.2 Q(typedef struct _hist_state {)108 211.2 Q
(HIST_ENTR)113 223.2 Q 2.5(Y*)-.65 G
(*entries; /* Pointer to the entries themselv)-2.5 E(es. */)-.15 E
(int of)113 235.2 Q 25(fset; /*)-.25 F
(The location pointer within this array)2.5 E 2.5(.*)-.65 G(/)-2.5 E
(int length;)113 247.2 Q(/* Number of elements within this array)27.5 E
2.5(.*)-.65 G(/)-2.5 E(int size;)113 259.2 Q
(/* Number of slots allocated to this array)32.5 E 2.5(.*)-.65 G(/)-2.5
E(int \215ags;)113 271.2 Q 2.5(}H)108 283.2 S(IST)-2.5 E(OR)-.18 E(Y_ST)
-.65 E -1.11(AT)-.93 G(E;)1.11 E(If the \215ags member includes)108 300
Q F2(HS_STIFLED)2.5 E F0 2.5(,t)C(he history has been sti\215ed.)-2.5 E
/F3 10.95/Times-Bold@0 SF(History Functions)72 316.8 Q F0
(This section describes the calling sequence for the v)108 328.8 Q
(arious functions e)-.25 E(xported by the GNU History library)-.15 E(.)
-.65 E F2(Initializing History and State Management)87 345.6 Q F0 1.274
(This section describes functions used to initialize and manage the sta\
te of the History library when you)108 357.6 R -.1(wa)108 369.6 S
(nt to use the history functions in your program.).1 E F1(void)108 393.6
Q F2(using_history)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E(Be)108
405.6 Q(gin a session in which the history functions might be used.)-.15
E(This initializes the interacti)5 E .3 -.15(ve v)-.25 H(ariables.)-.1 E
F1(HIST)108 429.6 Q(OR)-.18 E(Y_ST)-.18 E -.37(AT)-.5 G 2.5(E*).37 G F2
(history_get_history_state)A F0(\()4.166 E F1(void)A F0(\))1.666 E
(Return a structure describing the current state of the input history)
108 441.6 Q(.)-.65 E F1(void)108 465.6 Q F2(history_set_history_state)
2.5 E F0(\()4.166 E F1(HIST)A(OR)-.18 E(Y_ST)-.18 E -.37(AT)-.5 G 2.5
(E*).37 G(state)-2.5 E F0(\))1.666 E
(Set the state of the history list according to)108 477.6 Q F1(state)2.5
E F0(.)A F2(History List Management)87 506.4 Q F0
(These functions manage indi)108 518.4 Q(vidual entries on the history \
list, or set parameters managing the list itself.)-.25 E F1(void)108
542.4 Q F2(add_history)2.5 E F0(\()4.166 E F1(const c)A(har *string)-.15
E F0(\))1.666 E(Place)108 554.4 Q F1(string)2.5 E F0
(at the end of the history list.)2.5 E
(The associated data \214eld \(if an)5 E(y\) is set to)-.15 E F2(NULL)
2.5 E F0(.)A F1(void)108 578.4 Q F2(add_history_time)2.5 E F0(\()4.166 E
F1(const c)A(har *string)-.15 E F0(\))1.666 E
(Change the time stamp associated with the most recent history entry to)
108 590.4 Q F1(string)2.5 E F0(.)A F1(HIST_ENTR)108 614.4 Q 2.5(Y*)-.18
G F2 -.18(re)C(mo).18 E -.1(ve)-.1 G(_history).1 E F0(\()4.166 E F1
(int whic)A(h)-.15 E F0(\))1.666 E(Remo)108 626.4 Q .353 -.15(ve h)-.15
H .053(istory entry at of).15 F(fset)-.25 E F1(whic)2.553 E(h)-.15 E F0
.053(from the history)2.553 F 5.053(.T)-.65 G .053(he remo)-5.053 F -.15
(ve)-.15 G 2.553(de).15 G .052(lement is returned so you can free the)
-2.553 F(line, data, and containing structure.)108 638.4 Q F1
(histdata_t)108 662.4 Q F2(fr)2.5 E(ee_history_entry)-.18 E F0(\()4.166
E F1(HIST_ENTR)A 2.5(Y*)-.18 G(histent)-2.5 E F0(\))1.666 E .933
(Free the history entry)108 674.4 R F1(histent)3.433 E F0 .933(and an)
3.433 F 3.433(yh)-.15 G .933(istory library pri)-3.433 F -.25(va)-.25 G
.933(te data associated with it.).25 F .934(Returns the applica-)5.933 F
(tion-speci\214c data so the caller can dispose of it.)108 686.4 Q F1
(HIST_ENTR)108 710.4 Q 2.5(Y*)-.18 G F2 -.18(re)C(place_history_entry)
.18 E F0(\()4.166 E F1(int whic)A -.834(h, const)-.15 F -.15(ch)2.5 G
(ar *line).15 E 1.666(,h)-.1 G(istdata_t data)-1.666 E F0(\))3.332 E
(Mak)108 722.4 Q 4.014(et)-.1 G 1.514(he history entry at of)-4.014 F
(fset)-.25 E F1(whic)4.013 E(h)-.15 E F0(ha)4.013 E -.15(ve)-.2 G F1
(line)4.163 E F0(and)4.013 E F1(data)4.013 E F0 6.513(.T)C 1.513
(his returns the old entry so the caller can)-6.513 F(GNU History 5.0)72
768 Q(2003 July 31)139.005 E(3)203.165 E 0 Cg EP
%%Page: 4 4
%%BeginPageSetup
BP
%%EndPageSetup
/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F
(OR)-.18 E(Y\(3\))-.65 E(dispose of an)108 84 Q 2.5(ya)-.15 G
(pplication-speci\214c data.)-2.5 E(In the case of an in)5 E -.25(va)-.4
G(lid).25 E/F1 10/Times-Italic@0 SF(whic)2.5 E(h)-.15 E F0 2.5(,a)C/F2
10/Times-Bold@0 SF(NULL)A F0(pointer is returned.)2.5 E F1(void)108 108
Q F2(clear_history)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E
(Clear the history list by deleting all the entries.)108 120 Q F1(void)
108 144 Q F2(sti\215e_history)2.5 E F0(\()4.166 E F1(int max)A F0(\))
1.666 E(Sti\215e the history list, remembering only the last)108 156 Q
F1(max)2.5 E F0(entries.)2.5 E F1(int)108 180 Q F2(unsti\215e_history)
2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E .46
(Stop sti\215ing the history)108 192 R 5.46(.T)-.65 G .46
(his returns the pre)-5.46 F .46
(viously-set maximum number of history entries \(as set by)-.25 F F2
(sti-)2.96 E(\215e_history\(\))108 204 Q F0 2.5(\). history)B -.1(wa)2.5
G 2.5(ss).1 G 2.5(ti\215ed. The)-2.5 F -.25(va)2.5 G(lue is positi).25 E
.3 -.15(ve i)-.25 H 2.5(ft).15 G(he history w)-2.5 E(as sti\215ed, ne)
-.1 E -.05(ga)-.15 G(ti).05 E .3 -.15(ve i)-.25 H 2.5(fi).15 G 2.5(tw)
-2.5 G(asn')-2.6 E(t.)-.18 E F1(int)108 228 Q F2(history_is_sti\215ed)
2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E
(Returns non-zero if the history is sti\215ed, zero if it is not.)108
240 Q F2(Inf)87 268.8 Q(ormation About the History List)-.25 E F0(These\
 functions return information about the entire history list or indi)108
280.8 Q(vidual list entries.)-.25 E F1(HIST_ENTR)108 304.8 Q 2.5(Y*)-.18
G(*)-2.5 E F2(history_list)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E
.708(Return a)108 316.8 R F2(NULL)3.208 E F0 .708(terminated array of)
3.208 F F1(HIST_ENTR)3.208 E 3.208(Y*)-.18 G F0 .708
(which is the current input history)B 5.707(.E)-.65 G .707
(lement 0 of this)-5.707 F(list is the be)108 328.8 Q(ginning of time.)
-.15 E(If there is no history)5 E 2.5(,r)-.65 G(eturn)-2.5 E F2(NULL)2.5
E F0(.)A F1(int)108 352.8 Q F2(wher)2.5 E(e_history)-.18 E F0(\()4.166 E
F1(void)A F0(\))1.666 E(Returns the of)108 364.8 Q
(fset of the current history element.)-.25 E F1(HIST_ENTR)108 388.8 Q
2.5(Y*)-.18 G F2(curr)A(ent_history)-.18 E F0(\()4.166 E F1(void)A F0
(\))1.666 E 1.373
(Return the history entry at the current position, as determined by)108
400.8 R F2(wher)3.873 E(e_history\(\))-.18 E F0 6.373(.I)C 3.873(ft)
-6.373 G 1.374(here is no entry)-3.873 F(there, return a)108 412.8 Q F2
(NULL)2.5 E F0(pointer)2.5 E(.)-.55 E F1(HIST_ENTR)108 436.8 Q 2.5(Y*)
-.18 G F2(history_get)A F0(\()4.166 E F1(int of)A(fset)-.18 E F0(\))
1.666 E .288(Return the history entry at position)108 448.8 R F1(of)
2.787 E(fset)-.18 E F0 2.787(,s)C .287(tarting from)-2.787 F F2
(history_base)2.787 E F0 5.287(.I)C 2.787(ft)-5.287 G .287
(here is no entry there, or if)-2.787 F F1(of)2.787 E(fset)-.18 E F0
(is greater than the history length, return a)108 460.8 Q F2(NULL)2.5 E
F0(pointer)2.5 E(.)-.55 E F1(time_t)108 484.8 Q F2(history_get_time)2.5
E F0(\()4.166 E F1(HIST_ENTR)A 2.5(Y*)-.18 G F0(\))-.834 E(Return the t\
ime stamp associated with the history entry passed as the ar)108 496.8 Q
(gument.)-.18 E F1(int)108 520.8 Q F2(history_total_bytes)2.5 E F0(\()
4.166 E F1(void)A F0(\))1.666 E .391
(Return the number of bytes that the primary history entries are using.)
108 532.8 R .392(This function returns the sum of the)5.392 F
(lengths of all the lines in the history)108 544.8 Q(.)-.65 E F2(Mo)87
573.6 Q(ving Ar)-.1 E(ound the History List)-.18 E F0
(These functions allo)108 585.6 Q 2.5(wt)-.25 G(he current inde)-2.5 E
2.5(xi)-.15 G(nto the history list to be set or changed.)-2.5 E F1(int)
108 609.6 Q F2(history_set_pos)2.5 E F0(\()4.166 E F1(int pos)A F0(\))
1.666 E .79(Set the current history of)108 621.6 R .79(fset to)-.25 F F1
(pos)3.29 E F0 3.29(,a)C 3.29(na)-3.29 G .79(bsolute inde)-3.29 F 3.29
(xi)-.15 G .79(nto the list.)-3.29 F .79(Returns 1 on success, 0 if)5.79
F F1(pos)3.29 E F0 .79(is less)3.29 F
(than zero or greater than the number of history entries.)108 633.6 Q F1