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

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mtxrun --script font --list --pattern=lmtype.*regular lmtypewriter10-capsregular LMTypewriter10-CapsRegular lmtypewriter10-cap sregular.otf lmtypewriter10-regular LMTypewriter10-Regular lmtypewriter10-reg ular.otf lmtypewriter12-regular LMTypewriter12-Regular lmtypewriter12-reg ular.otf lmtypewriter8-regular LMTypewriter8-Regular lmtypewriter8-regular.otf lmtypewriter9-regular LMTypewriter9-Regular lmtypewriter9-regular.otf lmtypewritervarwd10-regular LMTypewriterVarWd10-Regular lmtypewritervarwd10-regular.otf A simple mtxrun --script fonts gives: version 1.0.2 - 2007+ - PRAGMA ADE / CONTEXT | font tools --reload --list --save --pattern=str --all generate new font database list installed fonts save open type font in raw table filter files provide alternatives In MkIV font names can be prexed by file: or name: and when they are resolved, several attempts are made, for instance non-characters are ignored. The --all ag shows more variants. Another example is: mtxrun --script context --ctx=somesetup somefile.tex Again, users of TEXexec may recognize part of this and indeed this is its replacement. Instead of TEXexec we use a script named mtx-context.lua. Currently we have the following scripts and more will follow: The babel script is made in cooperation with Thomas Schmitz and can be used to convert babelized Greek les into proper utf. More of such conversions may follow. With cache you can inspect the content of the MkIV cache and do some cleanup. The chars 170 The luacation of TEX and ConTEXt
script is used to construct some tables that we need in the process of development. As its name says, check is a script that does some checks, and in particular it tries to gure out if TEX les are correct. The already mentioned context script is the MkIV replacement of TEXexec, and takes care of multiple runs, preloading project specic les, etc. The convert script will replace the Ruby script pstopdf. A rather important script is the already mentioned fonts. Use this one for generating font name databases (which then permits a more liberal access to fonts) or identifying installed fonts. The unzip script indeed unzips archives. The update script is still somewhat experimental and is one of the building blocks of the ConTEXt minimal installer system by Mojca Miklavec and Arthur Reutenauer. This update script synchronizes a local tree with a repository and keeps an installation as small as possible, which for instance means: no OpenType fonts for pdfTEX, and no redundant Type1 fonts for LuaTEX and X TEX. The (for the moment) last two scripts are watch and web. We use them in (either automated or not) remote publishing workows. They evolved out of the eXaMpLe framework which is currently being reimplemented in Lua. As you can see, the LuaTEX project and its ConTEXt companion MkIV project not only deal with TEX itself but also facilitates managing the workows. And the next list is just a start. E context babel cache chars check convert fonts update watch web controls processing of les by MkIV conversion tools for L A TEX les utilities for managing the cache utilities used for MkIV development TEX syntax checker helper for some basic graphic conversion utilities for managing font databases tool for installing minimal ConTEXt trees hot folder processing tool utilities related to automate workows There will be more scripts. These scripts are normally rather small because they hook into mtxrun which provides the libraries. Of course existing tools remain part of the toolkit. Take for instance ctxtools, a Ruby script that converts font encoded pattern les to generic utf encoded les. Those who have followed the development of ConTEXt will notice that we moved from utilities written in Modula to tools written in Perl. These were later replaced by Ruby scripts and eventually most of them will be rewritten in Lua. macros I will not repeat what is said already in the MkIV related documents, but stick to a summary of what the impact on ConTEXt is and will be. From this you can deduce what the possible inuence on other macro packages can be. The luacation of TEX and ConTEXt 171
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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
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function tex.printlist(data) callba
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56 Token speak
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Interesting is that upto now I didn
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do end local function nextbyte(f) r
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\ctxlua{collectgarbage("setstepmul"
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Collecting tokens can take place in
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where TEX has to convert to and fro
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When experimenting with the new imp
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It will be clear that here we colle
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72 Nodes and attributes t={ attr={
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Let's end with an observation. Attr
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end end tex.sprint("\\setbox0=\\hbo
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78 Dirty tricks
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Those who read the previous chapter
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In a similar way support for xml wi
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Undoubtely this will have a huge im
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86 Going beta
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We like testing LuaTEX's open type
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k a el--rie am, ld p n th re, l ak
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his or her font). As said, it also
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["tag"]="calt", } }, ["name"]="ks_l
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When testing the implementation we
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Mr. rmn p Of course we have to test
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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
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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 (
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
Page 156 and 157: dyn_used min:478158, max:554800, pa
Page 158 and 159: str_ptr min:2131299, max:2136226, p
Page 160 and 161: if_stack min:0, max:13, pages:326 k
Page 162 and 163: pdf_refximage min:0, max:7, pages:3
Page 164 and 165: 162 Collecting garbage
Page 166 and 167: \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
Page 174 and 175: Opening up TEX started with rewriti
Page 176 and 177: One can question if a properly work
Page 178 and 179: ound to fonts (instead of being com
Page 180 and 181: • TEX primitives Access to and co
Page 182 and 183: • Open an instance using mplib.ne
Page 184 and 185: is dened in the les whose names sta
Page 186 and 187: }, }, ["pen"]={ { ["left_x"]=2.4548
Page 188 and 189: local tx, ty = p.x_coord, p.y_coord
Page 190 and 191: \startreusableMPgraphic{test} fill
Page 192 and 193: vardef textext(expr str) = image (
Page 194 and 195: local factor = 65536*(7200/7227) fu
Page 196 and 197: end return t This is a typical exam
Page 198 and 199: The user interface is downward comp
Page 200 and 201: key concept. There are few accessib
Page 202 and 203: \directlua 0 { for i=1,10 do tex.pr
Page 204 and 205: } end And still it's not okay, sinc
Page 206 and 207: eason why such code normally is not
Page 208 and 209: Of course we can discuss until eter
Page 210 and 211: 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
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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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The history of luaTEX 2006–2009 / v 0.50 - Pragma ADE

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