The history of luaTEX 2006–2009 / v 0.50 - Pragma ADE

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egister 2 3190 dimen other_char 50 2 other_char 61 = other_char 49 1 other_char 48 0 letter 112 p letter 116 t spacer 32 letter 97 a letter 102 f letter 116 t letter 101 e letter 114 r spacer 32 the 0 775 the register 2 3190 dimen other_char 50 2 As you can see, registers are not explicitly named, one needs the associated register code to determine it's character (a dimension in our case). before \inframed[width=3cm]{whatever} after before whatever after cmd chr id name letter 98 b letter 101 e letter 102 f letter 111 o letter 114 r letter 101 e spacer 32 call 103059 630062 inframed other_char 91 [ letter 119 w letter 105 i letter 100 d letter 116 t letter 104 h other_char 61 = other_char 51 3 letter 99 c 50 Token speak
letter 109 m other_char 93 ] left_brace 123 letter 119 w letter 104 h letter 97 a letter 116 t letter 101 e letter 118 v letter 101 e letter 114 r right_brace 125 spacer 32 letter 97 a letter 102 f letter 116 t letter 101 e letter 114 r As you can see, even when control sequences are collapsed into a reference, we still end up with many tokens, and because each token has three properties (cmd, chr and id) in practice we end up with more memory used after tokenization. compound|-|word compound-word cmd chr id name letter 99 c letter 111 o letter 109 m letter 112 p letter 111 o letter 117 u letter 110 n letter 100 d call 79496 3184 | other_char 45 - call 79496 3184 | letter 119 w letter 111 o letter 114 r letter 100 d Token speak 51
Page 1: MKII CONTEXT CONTEXT The history of
Page 4 and 5: XXI The luacation of TEX and ConTEX
Page 6 and 7: 4 Introduction
Page 8 and 9: Keep in mind that the functionality
Page 10 and 11: tricky part of this conversion is t
Page 12 and 13: prologues := 1 ; mpprocset := 1 ; W
Page 14 and 15: code. However, the signicantly larg
Page 16 and 17: \input zip:///somezipfile.zip?name=
Page 18 and 19: ecause we could move all kind of po
Page 20 and 21: If an acrhive is not a real TEX tre
Page 22 and 23: luatools --generate This command wi
Page 24 and 25: I know that it sounds a bit messy,
Page 26 and 27: By combining Lua with TEX, we can d
Page 28 and 29: 26 An example: CalcMath
Page 30 and 31: collapser was written. In the (pre)
Page 32 and 33: 30 Going utf
Page 34 and 35: In practice we prefer a more abstra
Page 36 and 37: of making that table accessible for
Page 38 and 39: Therefore, it will be no surprise t
Page 40 and 41: {"special","pdf: 1 0 0 rg"}, {"font
Page 42 and 43: some neat feature of \TeX, once you
Page 44 and 45: OPENTYPE 144 17.571.732 ENC 268 782
Page 46 and 47: The font denition callback intercep
Page 48 and 49: When processing a not so large le b
Page 50 and 51: letter 105 i spacer 32 letter 116 t
Page 54 and 55: This example uses an active charact
Page 56 and 57: function tex.printlist(data) callba
Page 58 and 59: 56 Token speak
Page 60 and 61: Interesting is that upto now I didn
Page 62 and 63: do end local function nextbyte(f) r
Page 64 and 65: \ctxlua{collectgarbage("setstepmul"
Page 66 and 67: Collecting tokens can take place in
Page 68 and 69: where TEX has to convert to and fro
Page 70 and 71: When experimenting with the new imp
Page 72 and 73: It will be clear that here we colle
Page 74 and 75: 72 Nodes and attributes t={ attr={
Page 76 and 77: Let's end with an observation. Attr
Page 78 and 79: end end tex.sprint("\\setbox0=\\hbo
Page 80 and 81: 78 Dirty tricks
Page 82 and 83: Those who read the previous chapter
Page 84 and 85: In a similar way support for xml wi
Page 86 and 87: Undoubtely this will have a huge im
Page 88 and 89: 86 Going beta
Page 90 and 91: We like testing LuaTEX's open type
Page 92 and 93: k a el--rie am, ld p n th re, l ak
Page 94 and 95: his or her font). As said, it also
Page 96 and 97: ["tag"]="calt", } }, ["name"]="ks_l
Page 98 and 99: When testing the implementation we
Page 100 and 101: Mr. rmn p Of course we have to test
Page 102 and 103:
ه‎ مَ‏ ه‎ لِ‏ دْ‏
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لاۤئِهٰٖا لاۤئِه
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َ غْتَرِفٌُم عْتَر
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وَْر وةَ،‏ ٰ ي كَ‏
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white black t-green a=1.000 t=0.500
Page 112 and 113:
Palets work with names: \definepale
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• support mechanism are under con
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So, effectively we set a box, and e
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116 Colors redone
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• Spaces at the end of the line (
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兡也包因沘氓侷柵苗
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〉 + 々 = 〉々〉々〉々
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124 Chinese, Japanese and Korean, a
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for k, v in pairs(_G) do print(k, v
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} [4] = 200 I mistakingly assumed t
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130 Optimization
Page 134 and 135:
xetex metapost We can also
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\startluacode xml.sprint(xml.first(
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a[position()=5] maybe a[first()] ma
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Now we have: okay okay okay Repla
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\startxmlsetups xml:mysetups \xmlse
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c1d1 c2d2 d3 d4 d5 Here com
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c2 d3 b/c[1] c1 c2 a/c[1] d3 a/c[-1
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The code in traditional TEX that de
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and this is where MkIV hooks in ist
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con-text == [c][o](pre=n-,post=,rep
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luastate_bytes min:37009927, max:87
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dyn_used min:478158, max:554800, pa
Page 158 and 159:
str_ptr min:2131299, max:2136226, p
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if_stack min:0, max:13, pages:326 k
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pdf_refximage min:0, max:7, pages:3
Page 164 and 165:
162 Collecting garbage
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\definefontfeature[coward] [kern=ye
Page 168 and 169:
We do our tests of a variant of Con
Page 170 and 171:
--make or --ini --run or --fmt= --l
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mtxrun --script font --list --patte
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Opening up TEX started with rewriti
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One can question if a properly work
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ound to fonts (instead of being com
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• TEX primitives Access to and co
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• Open an instance using mplib.ne
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is dened in the les whose names sta
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}, }, ["pen"]={ { ["left_x"]=2.4548
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local tx, ty = p.x_coord, p.y_coord
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\startreusableMPgraphic{test} fill
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vardef textext(expr str) = image (
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local factor = 65536*(7200/7227) fu
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end return t This is a typical exam
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The user interface is downward comp
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key concept. There are few accessib
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\directlua 0 { for i=1,10 do tex.pr
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} end And still it's not okay, sinc
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eason why such code normally is not
Page 208 and 209:
Of course we can discuss until eter
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some text some more When using Co
Page 212 and 213:
and the document itself is processe
Page 214 and 215:
setups and functions are assigned n
Page 216:
using some kind of api and history
Page 226 and 227:
In LuaTEX with ConTEXt MkIV support
Page 228 and 229:
• Designers (or programmers) may
Page 230 and 231:
228 OpenType: too open?
Page 232 and 233:
cannot be grabbed and they make the
Page 234 and 235:
232 It works!
Page 236 and 237:
when writing the result to le, TEX
Page 238 and 239:
236 Virtual Reality
Page 240 and 241:
\start \textdir TLT one \bidilro tw
Page 242 and 243:
240 Getting lost
Page 244 and 245:
using a few arabic fonts, some chin
Page 246 and 247:
The core data structure that we nee
Page 248 and 249:
table can contain information about
Page 250 and 251:
The ConTEXt cross reference mechani
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of them. Each lookup has a detailed
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otf.replacements otf.sequences otf.
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features: analyze=yes, calt=yes, cc
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feature mark, lookup ml_arab_l_16_s
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للِ‏ ه‎ ِ feature init, lo
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features: analyze=yes, calt=yes, cc
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esult: ۝ 1: [+TRT] U+6DD:۝ [-TRT]
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2: [+TRT] U+F01DD:۝ [-TRT] ۝ The
Page 268 and 269:
Pro. Dr. Donld E. Knuth feature cal
Page 270 and 271:
268 Tracking
Page 272 and 273:
The order in which this happens now
Page 274 and 275:
normalizers characters words fonts
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local function hyphenation(head,tai
Page 278 and 279:
276 The order of things
Page 280 and 281:
of LuaTEX Taco and I worked in para
Page 282 and 283:
Next we see (scaled) Latin Modern:
Page 284 and 285:
As you can see, it is possible to a
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next: U+FF008 { => U+FF06E { => U+F
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end } commands = { { "slot", 1, bas
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(a,b) = (1.20,3.40) So we don't nee
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} description = "SOLIDUS", directio
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⎧ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎩
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840 italic 60 top_accent (0,1020) f
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296 Unicode math
Page 300 and 301:
tex.print("access") else tex.print(
Page 302 and 303:
300 User code
Page 304 and 305:
namespace with code not coming from
Page 306 and 307:
• The code denes a few global tab
Page 308 and 309:
ut this now refers to an index in a
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On the agenda is xing some ‘hyphe
Page 312 and 313:
We also use the opportunity to slow
Page 314 and 315:
Math. Because the TEX Gyre math pro
Page 316 and 317:
Tracing on Taco's machine has shown
Page 318 and 319:
node list callback tasks - 4 unique
Page 320 and 321:
pdftex 1.28 (23) 2.07 (144) 6.96 (2
Page 322 and 323:
July 19, 2009 - The number of files
Page 324 and 325:
July 19, 2009 - The relative number
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The history of luaTEX 2006–2009 / v 0.50 - Pragma ADE

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