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

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َ غْتَرِفٌُم عْتَرِفٍُم جْدِهٖ،َم نِْم لِسَِب َ ِ ً لَخ لاۤئِهٰٖا ِ ةََك وْ‏ نَُك انََی سَْج ْ غْتَرِفٌُم عْتَرِفٍُم جْدِهٖ،َم نِْم لِسَِب َ ِ ً َ لَخ لاۤئِهٰٖا َ ةََك وْ‏ نَُك َ ْ انََی سَْج َ ِ َ One script can serve multiple languages so let's see what happens when we switch to Urdu. analyze=yes, ccmp=yes, clig=yes, curs=yes, dlig=yes, features=yes, fina=yes, init=yes, isol=yes, kern=yes, language=urd, liga=yes, mark=yes, medi=yes, mkmk=yes, mode=node, rlig=yes, script=arab ِ ‏ِهلل اَل ‏ُدْمَ‏ ‏ْح ‏ِهلل ‏َْحم ‏َد ٖ، ن ‏َاشرا؛ ا ‏ْيِ‏ ‏َذل ‏َوالأْ‏ ‏ْر ‏َواحَ‏ ‏َوالأْ‏ اَل ‏ُدْمَ‏ ‏ْح ‏ِهلل ‏َْحم ‏َد ن ‏َاشرا؛ ا ‏ْيِ‏ ‏َذل ‏َوالأْ‏ ‏ْر ‏َواحَ‏ ‏َوالأْ‏ ‏ِبح ال ‏ْموَ‏ ‏َتْ‏ ‏َواذل‎كْرَ‏ ‏ِبح ال ‏ْموَ‏ ‏َتْ‏ ‏َواذل‎كْرَ‏ هِدْمَ‏ ‏َوال وةَ،ٰیَ‏ ‏ْح ‏َوالن‎س ‏َوال رْیَ‏ ‏ْخ ‏ِبحارَِ‏ ‏َوالن ‏َعْ‏ ‎ف ‏َوالشر‎ انِ‏ ‏َوالضر‎ الث‎ن ‏ِءۤ‏ ‏َا ‏َشاكِرً‏ ا،‏ ‏َوالس‎ ‏َوحُسِْل ‏َوال ‏ْحرَ‏ ‏ِن ، ، ، . ،ٖ َ ‏َق امَ،‏ هِدْمَ‏ ‏َوال وةَ،ٰیَ‏ ‏ْح ‏َوالن‎س ‏َوال رْیَ‏ ‏ْخ ‏ِبحارَِ‏ ‏َوالن ‏َعْ‏ ‎ف ‏َوالشر‎ انِ‏ ‏َوالضر‎ الث‎ن ‏ِءۤ‏ ‏َا ‏َشاكِرً‏ ا،‏ ‏َوالس‎ ‏َوحُسِْل ‏َوال ‏ْحرَ‏ ‏ِن ، ، ، . َ ‏َق امَ،‏ In practice one will enable most <strong>of</strong> the features. In MkIV one can dene feature sets as follows: \definefontfeature [arab-default] [mode=node,language=dflt,script=arab, init=yes,medi=yes,fina=yes,isol=yes, liga=yes,dlig=yes,rlig=yes,clig=yes, mark=yes,mkmk=yes,kern=yes,curs=yes] Applying these features to fonts can be done in several ways, with as most basic one: \font\ArabFont=arabtype*arab-default at 18pt Normally one will do something like \definefont[ArabFont][arabtype*arab-default at 18pt] or use typescripts to set up ap proper font collection, in which case we end up with definitions that look like: 104 Arabic
ِ ً غْتَرِفٌُم عْتَرِفٍُم جْدِهٖ،َم نِْم لِسَِب لاۤئِهٰٖا لَخ ِ َ َ وْ‏ نَُك َ َ ةََك ْ سَْج ِ ً انََی غْتَرِفٌُم عْتَرِفٍُم جْدِهٖ،َم نِْم لِسَِب لاۤئِهٰٖا لَخ ِ َ َ وْ‏ نَُك َ َ ةََك انََی ْ سَْج عْترَُم لحَْ‏ مْ‏ دُ‏ ‎‏َِا نِْم َ قََل ل‎ذِ‏ يَْا ا؛ً‏ ِ شر‎َ‎ لائِهٰٖا لحِ‏ ‏ُسْ‏ نَِو لِاسَِب \definefontsynonym[ArabType][name:arabtype][features=arab-default] \definefontsynonym[Serif][ArabType] More information about typescripts can be found in manuals and on the ConTEXt wiki. We end this chapter with showing two arabic fonts so that you can get a taste if the differences: arabtype by MicroS<strong>of</strong>t and Palatino which is designed by Herman Zapf for Linotype. analyze=yes, ccmp=yes, clig=yes, curs=yes, dlig=yes, features=yes, fina=yes, init=yes, isol=yes, kern=yes, language=dflt, liga=yes, mark=yes, medi=yes, mkmk=yes, mode=node, rlig=yes, script=arab ِ ‏ِهلل اَل ‏ُدْمَ‏ ‏ْح ‏ِهلل ‏َْحم ‏َد ٖ، ن ‏َاشرا؛ ا ‏ْيِ‏ ‏َذل ‏َوالأْ‏ ‏ْر ‏َواحَ‏ ‏َوالأْ‏ اَل ‏ُدْمَ‏ ‏ْح ‏ِهلل ‏َْحم ‏َد ن ‏َاشرا؛ ا ‏ْيِ‏ ‏َذل ‏َوالأْ‏ ‏ْر ‏َواحَ‏ ‏َوالأْ‏ ‏ِبح ال ‏ْموَ‏ ‏َواذل‎كْرَ‏ ‏ِبح ال ‏ْموَ‏ ‏َواذل‎كْرَ‏ ‏ِبحارَِ‏ ‏َوالشر‎ انِ‏ ‏َوالضر‎ الث‎ن ‏ِءۤ‏ ‏َا ‏َشاكِرً‏ ا،‏ ‏َوالس‎ ‏َوحُسِْل ‏َوال ‏ْحرَ‏ ‏ِن ، ، ، امَ،‏ ‏َتْ‏ َ ‏َق هِدْمَ‏ ‏َوال وةَ،ٰیَ‏ ‏ْح ‏َوالن‎س ‏َوال رْیَ‏ ‏ْخ ‏ِبحارَِ‏ ‏َوالشر‎ ‏َوالن ‏َعْ‏ ‎ف انِ‏ ‏َوالضر‎ الث‎ن ‏ِءۤ‏ ‏َا ‏َشاكِرً‏ ا،‏ ‏َوالس‎ ‏َوحُسِْل ‏َوال ‏ْحرَ‏ ‏ِن ، ، ، . ،ٖ امَ،‏ ‏َتْ‏ َ ‏َق هِدْمَ‏ ‏َوال وةَ،ٰیَ‏ ‏ْح ‏َوالن‎س ‏َوالن ‏َعْ‏ ‎ف ‏َوال رْیَ‏ ‏ْخ . analyze=yes, ccmp=yes, clig=yes, curs=yes, dlig=yes, features=yes, fina=yes, init=yes, isol=yes, kern=yes, language=dflt, liga=yes, mark=yes, medi=yes, mkmk=yes, mode=node, rlig=yes, script=arab ِ ِ ِ ‏ٍف ‏ِء الث‎ انَ‏ ‏َْحمِ‏ ‎ِ‎اً‏ ‏َْمج ‏ِبحارَِ‏ ‏ٌفِ‏ ترْغُ‏ ‏ٖه،‏ م ‏ِدْمَ‏ ‏ِبح ‏َد ‏َخ ‏ٖه،‏ ‏ِد الْمَ‏ وْ‏ تَ‏ ‏ِن ، َ Arabic 105
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MKII CONTEXT CONTEXT The history of
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XXI The luacation of TEX and ConTEX
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4 Introduction
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Keep in mind that the functionality
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tricky part of this conversion is t
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prologues := 1 ; mpprocset := 1 ; W
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code. However, the signicantly larg
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\input zip:///somezipfile.zip?name=
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ecause we could move all kind of po
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If an acrhive is not a real TEX tre
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luatools --generate This command wi
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I know that it sounds a bit messy,
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By combining Lua with TEX, we can d
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26 An example: CalcMath
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collapser was written. In the (pre)
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30 Going utf
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In practice we prefer a more abstra
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of making that table accessible for
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Therefore, it will be no surprise t
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{"special","pdf: 1 0 0 rg"}, {"font
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some neat feature of \TeX, once you
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OPENTYPE 144 17.571.732 ENC 268 782
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The font denition callback intercep
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When processing a not so large le b
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letter 105 i spacer 32 letter 116 t
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egister 2 3190 dimen other_char 50
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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
Page 104 and 105: لاۤئِهٰٖا لاۤئِه
Page 108 and 109: وَْر وةَ،‏ ٰ ي كَ‏
Page 110 and 111: white black t-green a=1.000 t=0.500
Page 112 and 113: Palets work with names: \definepale
Page 114 and 115: • support mechanism are under con
Page 116 and 117: So, effectively we set a box, and e
Page 118 and 119: 116 Colors redone
Page 120 and 121: • Spaces at the end of the line (
Page 122 and 123: 兡也包因沘氓侷柵苗
Page 124 and 125: 〉 + 々 = 〉々〉々〉々
Page 126 and 127: 124 Chinese, Japanese and Korean, a
Page 128 and 129: for k, v in pairs(_G) do print(k, v
Page 130 and 131: } [4] = 200 I mistakingly assumed t
Page 132 and 133: 130 Optimization
Page 134 and 135: xetex metapost We can also
Page 136 and 137: \startluacode xml.sprint(xml.first(
Page 138 and 139: a[position()=5] maybe a[first()] ma
Page 140 and 141: Now we have: okay okay okay Repla
Page 142 and 143: \startxmlsetups xml:mysetups \xmlse
Page 144 and 145: c1d1 c2d2 d3 d4 d5 Here com
Page 146 and 147: c2 d3 b/c[1] c1 c2 a/c[1] d3 a/c[-1
Page 148 and 149: The code in traditional TEX that de
Page 150 and 151: and this is where MkIV hooks in ist
Page 152 and 153: con-text == [c][o](pre=n-,post=,rep
Page 154 and 155: luastate_bytes min:37009927, max:87
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dyn_used min:478158, max:554800, pa
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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
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162 Collecting garbage
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\definefontfeature[coward] [kern=ye
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We do our tests of a variant of Con
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--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
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Of course we can discuss until eter
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some text some more When using Co
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and the document itself is processe
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setups and functions are assigned n
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using some kind of api and history
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In LuaTEX with ConTEXt MkIV support
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• Designers (or programmers) may
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228 OpenType: too open?
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cannot be grabbed and they make the
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232 It works!
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when writing the result to le, TEX
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236 Virtual Reality
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\start \textdir TLT one \bidilro tw
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240 Getting lost
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using a few arabic fonts, some chin
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The core data structure that we nee
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table can contain information about
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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
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Pro. Dr. Donld E. Knuth feature cal
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268 Tracking
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The order in which this happens now
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normalizers characters words fonts
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local function hyphenation(head,tai
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276 The order of things
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of LuaTEX Taco and I worked in para
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Next we see (scaled) Latin Modern:
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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
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tex.print("access") else tex.print(
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300 User code
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namespace with code not coming from
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• The code denes a few global tab
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ut this now refers to an index in a
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On the agenda is xing some ‘hyphe
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We also use the opportunity to slow
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Math. Because the TEX Gyre math pro
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Tracing on Taco's machine has shown
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node list callback tasks - 4 unique
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pdftex 1.28 (23) 2.07 (144) 6.96 (2
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July 19, 2009 - The number of files
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July 19, 2009 - The relative number
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