2 This file is in the public domain.
4 ==============================================================
5 LuaTeX Release 0.95 was released 2016040415
6 ==============================================================
8 This is a prerelease of the stable 1.0 version.
10 - glues now have gluespec merged in (idem math and insert)
11 - registers are still glue specs
12 - the spec field in glues are gone
13 - extra tex.setglue and tex.setmuglue
14 - obsolete dvi related dir fields removed
16 (if we are in time, it will be included in TeX Live 2016)
19 ==============================================================
20 LuaTeX Release 0.90.0 was released 2016032512
21 ==============================================================
23 This is the version that will go on TeX Live 2016
25 - mostly small bug fixes
26 - a few setters/getters added to the pdf namespace (were in the tex one before)
27 - a few patches to the lua interface macros
28 - a bit more control over protrusion edges
29 - no fundamental changes
33 ==============================================================
34 Luatex Release 0.89.4 was released 2016031100
35 ==============================================================
37 Intermediary release. Several bugs fixed.
41 ==============================================================
42 Luatex Release 0.89.2 was released 2016022700
43 ==============================================================
45 Intermediary release. Several bugs fixed.
48 ==============================================================
49 Luatex Release 0.89.0 was released 2016020500
50 ==============================================================
52 No fundamental changes, just some fixes / improvements (and of course new bugglets).
55 \pdfvariable pkfixeddpi = integer % > 0 : use only default dpi (so one can do with one high res instance)
56 \pdfvariable ignoreunknownimages = integer % > 0 : ignore missing and inject something empty (to be used with care)
58 \edef\foo{\pdfvariable foo}
60 \ifx\foo\oof don't fool me\fi
61 (side effect of no longer aborting on missing, so one implement a catch)
66 ==============================================================
67 Luatex Release 0.88.0 was released 2016011500
68 ==============================================================
70 This is a next step upto 0.90 and it has the following changes:
72 - mostly small bug fixes
74 - a few setters/getters added to the pdf namespace (were in the tex one before)
76 - The current libraries under libs are now:
90 ==============================================================
91 Luatex beta-0.87.0 was released 2015121700
92 ==============================================================
96 This is a next step upto 0.90 and it has the following changes:
98 - image data is no longer stored in the format (it was fragile anyway)
100 - pdf backend data generated when in ini mode is no longer stored in the format
102 - (incomplete) \mag support removed from pdf backend (this functionality is
105 - there are a couple of improvements that should make luatex run a little bit faster
106 (but of course that depends on the job at hand)
108 - some further pending issues / cleanup has been done (but this is not reflected in the
111 - there is a new primitive \nospace:
113 \nospace=1 do now not inject glue for spaces (not even zero glue)
114 \nospace=2 inject zero glue for spaces
116 - there are new primitives \hpack, \vpack and \tpack that are like \hbox, \vbox and
117 \vtop but they don't trigger callbacks
119 - we no longer keep track of older math character and delimiter definition states,
120 but this should normally go unnoticed
122 - from now on only ^^XX, ^^C, ^^^^XXXX and ^^^^^^XXXXXX are supported so no funny odd
123 values (three and five)
125 - texio.setescape(0) disables escaping to terminal (a matter of taste)
127 - the (current) lc codes are now saved with the (current) language when patterns are
128 loaded unless one hs used \hjcode instead of \lccode; overloading of \hjcodes is
129 possible (but of course goes ahead of hyphenation which is delayed till parbuilding or
132 - active characters can now be set with: \letcharcode123=\foo (experimental)
134 - there are some experimental new primitives but these will be described when they are
135 stable (currently being tested)
137 - there is more backend error reporting and all error messages adn warnings (the non-tex
138 ones) have been normalized
140 - of course there are the usual small fixes and additional setters and getters in libraries
144 ==============================================================
145 Luatex beta-0.85.0 was released 2015111400 (5550)
146 ==============================================================
149 The 0.85 release is has a lot of changes. It is the prelude to 0.90 which itself is
150 a prelude to the 0.95 that will go on texlive 2016. The 1.00 release will happen
151 around the 2016 context meeting. After that 2.* will become the next experimental
152 branch (leading to 3.*). The most important changes between 0.80 and 0.85 are mentioned
153 below. For more information consult the manual.
155 -- the backend commands
157 There is a better separation between front- and backend code. Some of the generic
158 \pdf* commands have been promoted to core primitives (with different names), some
159 have been removes like ximagecolordepth and ximagebbox have been removed and
160 all that are left have been organized differently. The backend is now more abstract
161 and provides three primitives only
163 \pdfextension <keyword> <optional spec>
164 \pdfvariable <keyword>
165 \pdffeedback <keyword>
167 The first replaces \pdfannot and alike, the second replaces the variables that can
168 be sused to control behaviour, and the third accesses the read only variables. See
169 luatex-pdf.tex in the context distribution for a plain definition file.
171 The big advantage of the separation (basically core (lua)tex + extensions) is that
172 changes in the backend don't have consequences for the frontend and it's easier to
173 locate possible issues in the code. We might split a bit more at the lua end too.
177 The boundary, dir and localpar whatsits are now normal nodes. The xforms and ximage
178 whatsits are now a special kind of rule nodes (subtypes 1 and 2) and known as box-
179 and image resources (see manual). Also, empty rules are now a valid subtype (subtype
180 3) with related commands \nohrule and \novrule.
182 At the lua end one can now access the fields of a spec subnode directly in the parent,
183 which has the benefit of more control and robust assignments (no need to check for
184 writeability) while we keep the concept of shared glue specs (tex internals). By
185 staying close to traditional TeX the Knuthian documentation still applies in most
188 The pdf action nodes are now pdf_action whatsit nodes (so no longer a pseudo core
191 You can get the node subtypes with the node.subtypes function which adds a layer
192 of abstraction (foo.subtype = "string" might be added in the future).
196 The hz optimization already only supported level 2 optimization, but now has a variant
197 3 that does only stretch glyphs and not kerns. Pending is a change where we go back to
198 percentages instead of fractions of em.
202 The old/new codepath has been checked and italic correction which is fundamental
203 different between the engines has been (partially) redone.
205 We now have \mathsurroundskip that replaces mathsurround when it's non zero.
207 The \mathtoptions (old 1) directive can be used for testing. This primitive is mostly for
208 ourselves and used for development.
210 The \Umathcharclass, \Umathcharfam and \Umathcharslot primitives can be used to fetch
211 properties of a math character.
213 The new \Uleft, \Uright and \Umiddle fence operators accept "height <dimen>", "depth
214 <dimen>" and the "noaxis" keyword as well the "exact" keyword for non-fitting ones. There
215 is also \Uvextension. Optionally one can specify a 'class'.
217 The \Udelimiter[under|over] and \U[under|over]delimiter primitives accept a width as well
218 as left, middle and right keywords (for non fitting ones). There is also \Uhextension.
220 The \abovewithdelimiter command accepts 'exact' as keyword (before the dimension) which nils
221 the excessive spacing. The normal vgaps still apply.
223 We have a new fraction primitive \Uskewed with a companion \Uskewedwithdelims. Optional
224 keywords are 'noaxis' and 'exact'.
226 There is a new directive \mathdisplayskipmode (esp for controlling the > 0 below skip check).
228 With \mathscriptsmode you can fix anchoring of scripts (as needed for chemistry).
230 The \Umathaccent commands accept a width and fraction argument.
234 The discretionary command now accept an optional "penalty <number>" specification
235 where the penalty will be stored with the node. Default is hyphenpenalty.
239 texio.write/write_nl now writes to file if the first argument is a (valid) number
240 reference to a file opened at the tex end; you can now open 128 files from the tex end
241 (0..127) and the system command is no longer executed with 18
245 The tex.<internal variable> is hopefully better now. The tex.get* also can handle
246 the built in registers. Especially prevdepth access should work out ok now.
250 As usual there are lots of small fixes, improvements, overhauls, small additions,
251 hopefully all mentioned in the manual.
255 This version is probably not compatible with the macro package that you use as some
256 engine specific initializations need to take place (\pdf commands) and some node types
257 have been changed. We now have separated pdf backend commands and the only left
258 primitive categories are: core, (tex), etex and luatex, so no more pdftex, omega and
259 umath (where the distinction became to fuzzy). Of course you can still prefix.
263 ==============================================================
264 Luatex beta-0.81.0 was released 2015100722 (5350)
265 ==============================================================
269 * A couple of primitives are removed, renamed and/or promoted to core (luatex) primitives.
270 Here's a summary. It might demand some adaption in the way macro packages initialize so we will mention them here explicitly in advance. As shown below, a simple way to get backward compatibility is to \let old ones to new ones. So,
272 Updating to this version also might demand an update in the
273 macro package that you use!
277 % removed, can be done with callbacks if needed, one can define dimen dummies, like
279 \newdimen\pdfeachlineheight
280 \newdimen\pdfeachlinedepth
281 \newdimen\pdflastlinedepth
282 \newdimen\pdffirstlineheight
283 \newdimen\pdfignoreddimen
285 % removed, were already obsolete, one can \let them
287 \let\pdftexversion \luatexversion
288 \let\pdftexrevision\luatexrevision
289 \let\pdftexbanner \luatexbanner
291 % promoted (from pdftex), so pdf prefix gone, one can \let them
293 \let\pdfnormaldeviate \normaldeviate
294 \let\pdfuniformdeviate\uniformdeviate
295 \let\pdfsetrandomseed \setrandomseed
296 \let\pdfrandomseed \randomseed
298 % promoted (from omega), so pdf prefix gone, one can \let them
300 \let\pdfpagewidth \pagewidth
301 \let\pdfpageheight\pageheight
303 % redundant (etex wins over omega), so \font-less ones gone, one can \let them
305 \let\chardp\fontchardp
306 \let\charht\fontcharht
307 \let\charit\fontcharit
308 \let\charwd\fontcharwd
310 % promoted (from aleph)
315 % promoted (from pdftex)
321 % removed (from pdftex), so *pdf* ones gone, one can \let them
323 \let\ifpdfabsnum \ifabsnum
324 \let\ifpdfabsdim \ifabsdim
325 \let\ifpdfprimitive\ifprimitive
326 \let\pdfprimitive \primitive
328 % promoted (from omega)
336 % promoted (from aleph)
340 % promoted (from pdftex)
351 % promoted (from pdftex), so *pdf* ones gone, one can \let them
353 \let\pdfprotrudechars\protrudechars
354 \let\pdfadjustspacing\adjustspacing
356 \let\pdfnoligatures \ignoreligaturesinfont
357 \let\pdffontexpand \expandglyphsinfont
359 % promoted (from pdftex), so *pdf* ones gone, one can \let them
361 \let\pdfsavepos \savepos
362 \let\pdflastxpos\lastxpos
363 \let\pdflastypos\lastypos
365 % on the todo list are:
367 \pdfoutput : \outputmode
368 \pdfmatrix : will get a normal syntax, no weird { } parsing
370 \pdfcolorstackinit : might become obsolete
371 \pdfcolorstack : might become obsolete
373 So, apart from a few, the \pdf* primitives now relate to the backend only.
375 % There is also a new primitive:
379 This one determines the minimum word length (per language).
380 At the same time we moved the (ex)hyphenpenalties
381 in the disc nodes so you can inject discretionaries with specific penalties.
383 There will also be an updated manual.
387 * new epdf.openMemStream(s,l,docid)
388 to create a pdf from a lightuserdata or string.
389 (experimental, do not use in production.)
391 * uniform random generator in mplib is now specific for each numbersystem;
393 * too_precise implemented for binary number system;
398 ==============================================================
399 Luatex beta-0.80.0 was released 20150319 (5195)
400 ==============================================================
402 * New library newtokenlib. It will replace the current token lib.
403 * Fixed a bug on the normal random generator for double/decimal/binary
405 * Several others bugs fixed.
408 ==============================================================
409 Luatex beta-0.79.3.1 was released 20150122 (5140)
410 ==============================================================
412 * Fixed a bug in mp.w with a wrong input that gives a seg. fault.
416 ==============================================================
417 Luatex beta-0.79.3 was released 20150121 (5130)
418 ==============================================================
421 * It's now possible with the MinGW compilers to build luatex and luajittex as DLL
422 for Windows 32bit/64bit. The files are:
423 libkpathsea-6.dll luajittex.exe luatex.exe texlua52.dll texluajit.dll
424 In the next release the build.sh script be updated; for the moment just add
425 "--enable-shared -disable-native-texlive-build " after --disable-all-pkgs
427 Building as DLL was tested only for Windows.
429 * When possibile symbols in the exe are now hidden:
430 this should avoid conflicts with the loading of dynamic shared object.
432 * several bugfixes and improvements. The patches for MetaPost
433 fix seg. faults occourred with wrong inputs.
435 mp_get_numeric_value, mp_get_string_value, mp_get_boolean_value
436 works if the value is a variable (i.e. not an internal variable,
437 a loop variable and a macro argument);
438 only mp_get_numeric_value now has support for loop variable
439 and internal variable (but still not for macro arguments).
442 ==============================================================
443 Luatex beta-0.79.2 was released 20141111 (5082)
444 ==============================================================
447 * WARNING: the structure of the format file is changed.
448 After the Web2C \TeX's magic constant: "W2TX" there is now
449 a FORMAT_ID, a 32bit field that cannot be between 0 and 256 (included)
450 so that there are no conflicts with the preexisting structure
452 The value can be seen with --debug-format and currently is
453 907 (the sum of the values of the bytes of the ASCII string "don knuth").
455 * There is a new set of lua functions for StructElement and Attribute,
456 convenient (even if not indispensable) for tagged pdf.
459 * several bugfixes and improvements.
462 ==============================================================
463 Luatex beta-0.79.0 was released 20140328 (4960)
464 ==============================================================
466 * The luafontloader now returns 'tsidebearing' glyph values
467 for OT/TT fonts, if applicable.
469 * new lua variables: stats.luatex_hashtype, stats.luatex_hashchars,
470 stats.lastluaerrorstring; the luajittex string hash method is now
471 lua 5.1 compliant which gives better results for similar strings
473 * new lua functions: tex.init_rand(), tex.uniform_rand(),
474 tex.normal_rand(), tex.lua_math_randomseed(), tex.lua_math_random(),
475 tex.show_context(); these helpers make luatex and luajittex compatible
477 * In the lua node interface, there were often issues with rubbish
478 in (especially) 'prev' fields because luatex itself never looks
479 at those values. This is now cleaned up to prevent weird stuff
480 happening inside lua node processing code.
482 * pdf.pageattributes, pdf.pagesattributes, pdf.info, pdf.catalog,
483 pdf.names and pdf.trailer now behave consistent and can be used
484 to add these properties at the lua end in addition to their \pdf*
485 counterparts atthe tex end; there are now pdf.get* and pdf.set*
486 commands for them too (in future versions the old ways can become
489 * new accessors pdf.geth, pdfgetv, pdfgetpos, getgetmatrix as well
490 as pdfhasmatrix helpers (in future versions the direct pdf.h and
491 pdf.v accessor can become obsolete)
493 * the pdf.pdf* variables have been removed (they were already
494 obsolete for some years)
496 * a new properties mechanism for associating lua tables with nodes
497 that get cleaned up when nodes a freed (see manual for details)
499 * several improvements to the way temporary (backend) data is stored
500 at the lua end (better protection, more consistent)
502 * a 'l' type for user nodes that holds a lua variable (can be set
505 * if a late lua node is set at the lua end the string value can be
506 a function as well which is then executed during serialization to
509 * Various small speedups
511 * Various smallish fixes to the node direct interface
513 * LPeg is now at version 0.12
515 * Some small fixes to the CFF (font) parsing
517 * Font file inclusion reporting messages on the terminal now
518 comply to the texconfig.trace_file_names setting
520 * Removed some of the additional luafontloader.info() return
521 information that was added in 0.78.2, but could not work
524 * new primitive \luafunction (see manual), with associated
525 lua.get_functions_table() function
527 * lua error message reporting has been altered a bit to make
528 the distinction between \directlua and other lua source code
531 * Additional pdf document data functionality in the 'pdf' table
532 has been cleaned up internally
534 * Additional pdf destination names can now be set via lua.
536 * New callbacks: finish_pdfpage, show_error_message,
537 show_lua_error_hook, start_file, stop_file
539 * Handling of \tracinglostchars is fixed
541 * Embedded metapost library version is now 1.900
543 * luajittex is now included in the distribution. One can use
544 buildjit.sh to build both luatex and luajittex, where
545 supported by the platform
547 * Synchronization with the TeXLive sources updated the following
549 * libpng is now 1.6.10
550 * poppler is now 0.25.2
552 ==============================================================
553 Luatex beta-0.78.2 was released 20140113 (4748)
554 ==============================================================
556 * Extended luafontloader's info() function to include data
557 from the 'pfminfo' and 'names' structure.
559 * Fixed a bug in the luafontloader library that made loading
560 some fonts extremely slow (LastResort.ttf)
562 * Removed a recent extension in the luafontloader library that
563 made loading fonts with lots of glyphs slow (ArialUnicoce.ttf).
564 Note: the extension made sure that there were no duplicate
565 glyph names in the font after loading.
567 * Restored --recorder output for lua files (dofile/loadfile/io.open)
569 * One-at-a-time pattern adding from lua used to require enormous
572 * luatex's fontloader.to_table() no longer reports 'altuni' table
573 information for alternates that are solely driven by the font
574 encoding. This fixes loading time issues for fonts that fill
575 encodings by copying a single glyph many times, like e.g.
576 LastResort.ttf from Apple.
578 * The datestamp no longer appears in any banners. The associated
579 \luatexdatestamp primitive is deprecated and will be removed
582 * Synchronization with the TeXLive sources updated the following
584 * cairo is now 1.12.16
585 * pixman is now 0.32.4
588 * poppler is now 0.25.0
590 * That same TL synchronization also fixes these issues:
591 * Always write "\nendstream" to the PDF for PDF/A-1b compliance.
592 * Large file support (>4GB) in Lua
593 * Big images could overflow on systems where sizeof(long)=4.
594 * In writing CID CFF fonts to the PDF, and end_dict() was missing.
595 * Unknown 'post' table versions (found in some broken ttf/otf
596 fonts) are now treated as-if they specified version 3.0.
597 * Fix crashes on 32-bit systems caused by bad C header inclusion
599 * Handle '--luac' and '--luaconly' properly
600 * luatex is now released under GPLv2+, not just GPLv2.
601 * luatex can now find .ofm metric files even if the extension
602 is not given explicitly.
604 * node.unset_attribute() was broken in 0.78.0
606 * The UTF-8 commandline patch from 0.78.0 for Win32 was removed
607 again (did not work properly)
609 ==============================================================
610 Luatex beta-0.78.0 was released 20131231
611 ==============================================================
613 * Instead of using expanded fonts, just calculate the expanded
614 width of glyphs where needed, and carry expand info in the
615 glyph nodes (all based on Hans' suggestions). All font expansion
616 functions are disabled and most are removed.
618 * New, faster (but limited) direct node access from lua, see
619 the manual for details
621 * Support for Apple Advanced Typography (AAT) information in
624 * Extended build script for mingw/msys (includes 64-bit support)
626 * Various patches from/via Akira Kakuta for better Win32
629 * Fixes for some bugs in de pdfscanner library (mostly related
632 * Maximum hyphenated word length is now 64Kb characters.
634 * Various patches from Khaled Hosny and Luigi Scarso for the
635 luafontloader subsystem
637 * Fix for a crash when re-dumping formats
639 * Fix for a Selene unicode library bug where some characters in
640 UTF-8 were incorrectly flagged as having the 'Space' property
644 ==============================================================
645 Luatex beta-0.76.0 was released 20130405
646 ==============================================================
650 * Small patches from TeXLive 2013, as well as an update to the
651 latest libraries (libpng, poppler, etc.)
653 * Speed up printing (of TeX strings) to the terminal and log.
655 * New lua function node.end_of_math().
657 * Fixed a memory leak in the lua function pdfscanner.scan().
659 ==============================================================
660 Luatex beta-0.75.0 was released 20130301
661 ==============================================================
665 * New expandable primitive \Uchar.
669 * New version of lnodelib.c with speedups by Hans and Luigi.
670 Also added some extra sanity checks to the Lua node field
673 * Support 'umath' in tex.extraprimitives(), so that formats can
674 make the \Umath* primitives unprefixed, now that they will be
675 provided by XeTeX as well.
677 * Removed a bunch of deprecated primitives
678 * \AlephVersion, \Alephrevision, \Alephversion, \Alephminorversion
679 * \OmegaVersion, \Omegarevision, \Omegaversion, \Omegaminorversion
680 * \omathcode, \odelcode, \omathchardef, \omathchar, \omathaccent,
681 \odelimiter, \oradical
682 * \Umathbotaccent, \Umathaccents
684 * Fix large file support.
686 * Fix Lua's loadfile().
688 * Removed the cidmap callbacks again (let that be done by user lua
689 code after the fact).
691 * Removed the fatal error on fonts where num_glyphs is too high,
692 as that problem is actually harmless.
694 * Some compilation issues under Win32 and Solaris resolved.
696 * Allow math extender objects to be zero width.
698 * The 'epdf' library has been extended to deal with finding and
699 saving embedded files (catalog:numEmbeddedFiles() and catalog:
700 embeddedFile, new EmbFile object).
702 ==============================================================
703 Luatex beta-0.74.0 was released 20121224
704 ==============================================================
709 There are no patches to the core Lua files; a future version
710 of luatex will switch to loading the regular lua 5.2 dynamic
711 library instead of depending on a statically compiled
714 * A bleeding-edge version of luasocket is included, as there
715 is no 5.2-compatible official release yet.
717 * A new lua extension is the two-argument version of
718 string.dump from Luajit:
720 string.dump(function f, [boolean strip])
724 * The implied existence of the following lua libraries is now
727 debug, unicode.*, luazip, lfs, lpeg, zlib, gzip, md5,
728 socket.*, profiler, epdf, fontloader, mplib, and
731 Future versions of luatex will load these modules on demand
732 from dynamic libraries.
734 Please update your sources to include a 'require' line for
735 each of the library modules mentioned.
737 * Two new callbacks: find_cidmap_file and load_cidmap_file
738 (used by the fontloader to discover .cidmaps)
740 ==============================================================
741 Luatex beta-0.72.0 was released 20121210
742 ==============================================================
746 * update various used libraries, including mplib 1.770,
747 poppler 0.21, libpng 1.5, and lpeg 0.10.2.
749 * new 'pdfscanner' lua library.
751 * various OpenType math fixes, including \Umathcharnumdef.
753 * improved placement of bottom accents.
755 * various other small fixes that have accumulated over the past
758 ==============================================================
759 Luatex beta-0.70.1 was released 20110519
760 ==============================================================
764 * fixed: recorder file location from TL (Akira).
766 * fixed: missing newline on 'No output' line.
768 * fixed: relative names in synctex file.
770 * fixed: 16bit png images in generated %!PDF-1.4.
772 * fixed: building with (installed) libpng < 1.5.0
774 * fixed: year in --version output.
776 * fixed: box output to synctex.
778 * fixed: FontDescriptor for non-embedded OpenType fonts has an
779 invalid FontFile3 entry (#654)
781 * fixed: crash on non-existent images.
783 * fixed: small memory leak in the ipc code.
785 * fixed: tex.print() and tex.sprint() don't recognize -2 as the
786 first argument (#659)
788 ==============================================================
789 Luatex beta-0.70.0 was released 20110506
790 ==============================================================
794 * fixed: various changes needed for libpng 1.5.2.
796 * fixed: node.fields() for nodes without subtype.
798 * fixed: non-argument use of os.execute().
800 * fixed: tex.[s|t|]print() with invalid catcode table arguments.
802 * fixed: recorder filename location with --output-directory.
804 * fixed: display alignment in TRT mode.
806 * luatex now uses the standard synctex files from Jérome Laurens.
809 ==============================================================
810 Luatex beta-0.66.0 was released 20110412
811 ==============================================================
815 * fixed: linebreak_filter doesn't do its default job when
816 tex.linebreak is used
818 * fixed: \escapechar ignored by \meaning
820 * fixed: wrong px default
822 * fixed: font kern attribute inheritance
824 * fixed: "nop" unrecognized in virtual fonts
826 * fixed: assertion failure in dviluatex when font ptmr8t used
828 * fixed: tex.settoks for with strings with embedded zeroes
830 * fixed: an indexing problem with nonexistent font glyphs
832 * fixed: some crashes and other bugs on the 'subtype' and 'prev'
833 fields (not all node types have those fields)
835 * fixed: crash on token.csname_id ("")
837 * fixed: initialize the statically allocated node's type ids
839 * fixed: fencepost error in math parameter counting
841 * fixed: math family numbers > 255 are allowed
843 * fixed: compilation failure on Hurd
845 * fixed: a small bug leading to displacements when reading
848 * fixed: \directlua followed by \pdfximage generates error if
851 * fixed: a problem with \vadjust pre in alignments
853 * fixed: a lua stack growing problem in the backend in 0.65.0,
854 resulting in an inability to create more than a few thousand
857 * fixed: inclusion of Scribus-generated pdfs
859 * adapt: the default form margin is now zero (was 1bp before)
861 * adapt: libpng 1.4.4, zzuplib 0.13.60, mplib 1.504
863 * adapt: small changes to the build system and new imports from
864 the texlive repository
866 * feature: new function node.currentattr() queries the current
867 active attribute list
869 * feature: Lua font loading; ignore unknown enumeration keys in
872 * feature: JPEG 2000 image support
874 * feature: continuing work on the 'epdf' library
876 * doc: the 'epdf' lua library is now documented
878 * doc: various other manual corrections
881 ==============================================================
882 Luatex beta-0.65.0 was released 20101213
883 ==============================================================
887 * The Aleph and Omega version primitives are deprecated.
889 * The Apple Snow Leopard Truetype font collections now work
892 * Libpng has been updated to 1.4.4, and zlib to 1.2.5.
894 * New lua functions node.next() and node.prev().
896 * The already deprecated for some time node.protrusion_skipable()
897 function has been removed.
899 * fontloader.apply_featurefile() and fontloader.apply_afmfile()
900 now return nil,<errortable> on failure.
902 * The various node list fields in the lua node interface have
903 been renamed from 'list' to 'head', e.g. tex.box[0].head,
904 and the 'list' name is deprecated. For now, the deprecation
905 is silent, as 'list' will stay for quite some time. Please
906 update your lua source as soon as possible, though.
908 * The call node.type(<node>) now returns "node". The existing
909 functionality is otherwise unchanged.
911 * Luafilesystem has been updated to 1.5.0. NOTE: there is an
912 incompatible change in the directory iterator method.
914 * The restriction on linebreak_filter has been eased: at least one
915 horizontal box should be returned, but that is not necessarily
916 the last node any more.
918 * Backward compatibility has been restored for \meaning\mathchar
920 * node.first_character() has been renamed to node.first_glyph()
921 to better match its actual functionality.
923 * The \Umathaccent primitive now supports both/bottom keywords,
924 and \Umathbotaccent / \Umathaccents are now deprecated.
926 * The \Umathaccent primitive now also supports the fixed keyword,
927 which supports non-growing math accents even if the font says
928 there are extensible variants.
930 * Ongoing work on the epdf library.
934 * Assignment to \dimen65535 was broken earlier.
936 * <box>.head.prev is now always initialized to null (0).
938 * luatex -lua=<script> '\relax' no longer exits immediately,
939 instead going into interactive mode as it should.
941 * The \jobname was initialized wrongly for input file names
942 with multiple dots in them.
944 * The synctex file is now written in the right place when
945 --output-directory is given.
947 * \letterspacefont could cause crashes, especially when combined
950 * Luatex would crash on linux32 systems if it was build in an
951 environment where LFS (>2GB files) was enabled by default.
953 * Node lists created by node.copy_list() could not be hyphenated
954 due to an assertion error.
956 * Synctex support was partially broken since 0.60.0.
958 * With OpenType math fonts, accents with multiple parts
959 (like the \vec arrow) forgot to include all parts if the
960 accentee was too narrow.
962 * With OpenType math fonts, accents over any class except 0 and 7
965 * kpse.lookup("plain", {all = true}) was broken in kpathsea
966 itself (no extension given as well as --all specified).
968 * A FontForge bug made Cambria Math accents look bad, and the
969 placement of math top accents did not allow a marker at the
970 origin (patches by Stefan Philipp)
972 * Cut&Paste from PDF was sometimes broken due to bad ToUnicode map.
974 * Many small manual improvements (thanks to Paul Isambert)
976 * An other bugfix to lpeg 0.9 (from Roberto Ierusalimsky)
978 * Some small fixes to writet1.w (from Han The Thanh)
980 * A build failure because of bad libz configuration on Win32
982 ==============================================================
983 Luatex beta-0.64.0 was released 20101112
984 ==============================================================
988 * New lua functions pdf.refobj(), pdf.maxobjnum() and pdf.objtype()
990 * New lua function node.is_node()
992 * The max_strings configuration variable's maximum value is
993 raised to be identical to texlive's maximum (2097151), and
994 same for param_size (32767).
996 * The embedded mplib is now 1.503.
998 * Minor cleanups in the output of fontloader.to_table():
1000 - removed out-of-range altuni's from the output
1001 - don't dump the extra encodings, just the actual font encoding
1002 - export the encoding's name also as 'enc_name' at one level up
1003 - no longer exporting unset macstyles, nor zero uniqueids
1004 - fix creationtime and modification time
1006 * Ongoing work on the epdf library
1010 * Fix a bug where an explicit hyphen prevented hyphenation for the
1011 whole rest of the paragraph
1013 * Internal font copying forgot to copy the last font dimen
1015 * os.selfdir() is now documented
1017 * patch quad (\fontdimen6) in \letterspacefont to be compatible
1020 * Multi-page pdf inclusion was very slow in 0.63.0
1022 * Some extra checks added to the handling of glue_spec node
1023 objects in lua code.
1025 * Some node.prev pointers have been corrected (but this is not
1028 * A small fix to lpeg 0.9.
1031 ==============================================================
1032 Luatex beta-0.63.0 was released 20100909
1033 ==============================================================
1037 * Drop tex.ht[], tex.wd[], tex.dp[].
1039 * Drop OCP support (and associated primitives).
1041 * Add tex.catcode[], tex.lccode[], tex.sfcode[], tex.uccode[],
1042 tex.mathcode[] and tex.delcode[] and associated functions.
1044 * Add CIDset tables to the output pdf where appropriate.
1046 * Added a 'string' field to late_lua nodes on the lua side. This
1047 field does not convert the assigned string to a tokenlist.
1049 * The result of fontloader.open() now has some virtual accessors
1050 (as well as fontloader.to_table).
1052 * There is now a `short reference' in the manual folder
1057 * Fix a crash on an empty font (bugreport #468).
1059 * Fix a crash for extremely long pattern arguments.
1061 * Fix a crash on bad virtual character arguments in lua.
1063 * Fix hyphenation exceptions.
1065 * Prevent linebreak between initial local_par paragraph whatsit
1066 and a following skip (bugreport #437).
1068 * Fix placement of scripts on textstyle big operators in MATH
1069 fonts (bugreport #466).
1071 * Fix a crash on the return value of MPlib's 'postscript'
1072 operation on images.
1074 * Fix a crash on \leftghost & \rightghost in math mode.
1076 ==============================================================
1077 Luatex beta-0.62.0 was released 20100823
1078 ==============================================================
1082 * LuaTeX now uses libpoppler (0.12.4) instead of xpdf.
1084 * All backend functions now report what file they were searching
1085 for whenever a file cannot be found.
1087 * Input-ed lua files are now mentioned in the fls file if
1088 the --recorder switch is specified on the command line.
1090 * Paragraph indentation hlist nodes and hlist and vlist nodes
1091 generated by alignment rows and cells now have a subtype
1092 (3 for indent box, 4 for rows/columns, 5 for cells).
1094 * The 'epdf' lib is in active development and still growing.
1096 * The 'fontforge' table is finally removed (was deprecated
1101 * A new mplib import fixes two bad bugs in mplib:
1102 - string equality test was wrong
1103 - type declarations could delete pre-existing variables
1105 * PNG images with transparency could create random size
1106 differences in the generated PDF.
1108 * In some special cases, font expansion could cause wrong
1109 spacing in the generated PDF.
1111 * \letterspacefont was broken since a very long time.
1113 * The node subtype of the \leftskip and \rightskip glues was
1116 * Some memory leaks have been removed.
1118 * Various manual fixes.
1120 ==============================================================
1121 Luatex beta-0.61.0 was released 20100728
1122 ==============================================================
1126 * New lua library 'epdf' for introspection of PDF inclusions,
1127 see the manual for details.
1129 * Mplib version 1.502 is now included (which is still beta,
1132 * new "finish_pdffile" and "pre_dump" callbacks.
1134 * new function pdf.pageref()
1136 * In the lua 'tex' library: assignment to internal glue
1137 parameters is now allowed.
1139 * New lua function tex.error().
1143 * Fix for crashes on fonts with bad Panose values.
1145 * Fix for a box placement bug that could sometimes cause text
1148 * Fix for a few small PDF/A1-a compatibility bugs.
1150 * Fix \letterspacefont.
1152 * Fix \Ustopdisplaymath in combination with aligned displays.
1154 * In math delimiters, the last of a chain of predefined sizes
1155 was always ignored if there were also extensible parts.
1157 ==============================================================
1158 Luatex beta-0.60.2 was released 20100701
1159 ==============================================================
1163 * Various small portability fixes, especially for non-gcc
1166 * Updated synctex from Jerome Laurens.
1168 * fix bug #406: \pdfliteral hinders hyphenation.
1170 * fix pdf overprinting bug (related to \pdfliteral).
1172 * patch from Akira Kakuto that ensures that only absolute commands
1173 that are inside the %PATH% will be executed in win32's restricted
1176 * fix a buffer overflow in luafontloader.
1178 * fix cross-platform share-ability of generated formats.
1180 * fix a few typos in the manual.
1182 * fix trashing of the null glue spec by attribute reference code.
1184 * documented the deprecated state and brokenness of otp processing.
1187 ==============================================================
1188 Luatex beta-0.60.1 was released 20100428
1189 ==============================================================
1193 * renamed node.skipable() to node.skippable().
1195 * More git discovery patches in getluatexsvnversion.sh.
1197 * Added --warnings=[no|min|yes|max|all] option to build.sh.
1199 * While cross-compiling, build.sh now adds an extra linker switch
1200 to allow win32 exes to use 3G instead of 2G of virtual memory.
1204 * os.exec() & os.spawn() handled the environment differently from
1205 os.execute() on Win32 (patch from Tomek)
1207 * Builds with --enable-ipc were broken.
1209 * Assigning and acquiring \fontdimen s from TeX code was broken.
1211 * An initial attempt at fixing bug #372 (\predisplaydirection).
1213 * An attempt to fix \eqno/\leqno placements in mixed direction
1216 * Our local xpdf patch is reverted, it is not needed any more.
1218 * The os.selfdir variable was not documented, as well as broken
1221 * Fix "\input tikz hello \bye" bug, plus fix one sign error.
1223 * Fix handling of lua script files with UNC names.
1225 ==============================================================
1226 Luatex beta-0.60.0 was released 20100404
1227 ==============================================================
1231 * os.name now knows about CYGWIN (from Elie Roux)
1233 * Internal handling of direction specifiers is faster now.
1235 * Each glyph node now has three new virtual read-only fields:
1236 width, height, and depth (values in scaled points, of course)
1238 * There are new functions node.protrusion_skipable() and
1239 tex.badness() (useful for paragraph breaking in lua)
1241 * Also new: tex.linebreak(). See the manual for details.
1243 * All lua errors now report file and line numbers to aid in
1246 * Import of metapost 1.211.
1248 * pdf.pdfcatalog will be replaced soon by the new pdf.catalog
1249 pdf.pdfinfo will be replaced soon by the new pdf.info
1250 pdf.pdfnames will be replaced soon by the new pdf.names
1251 pdf.pdftrailer will be replaced soon by the new pdf.trailer
1253 * pdf.pdfmapfile and pdf.pdfmapline are replaced by the new
1254 pdf.mapfile() and pdf.mapline() functions. (a function interface
1255 fits these parameters better because they never return anything).
1257 * New read-write lua variables: pdf.pageattributes, pdf.pageresources,
1260 * getluatexsvnversion.sh now correctly detects git-svn and still
1261 manages to find a valid SVN revision number (from Patrick Gundlach)
1263 * Many of the source files have been converted to CWEB.
1267 * GNU libtool is now used to solve the various technical issues with
1268 dynamic loading of lua modules.
1270 * Error detection in scan_integer_part was wrong due to missing
1271 initialization of OK_so_far (spotted by Javier Mugica)
1273 * Synctex was broken in 0.51-0.52.
1275 * \lastlinefit was broken since ... well, nearly forever.
1277 * Reading of binary files with length zero was broken.
1279 * Trapping of unitialized rules (this was for sloppily created
1280 rule nodes from lua)
1282 * pdf.immediateobj('streamfile') was broken on 64-bit platforms.
1284 * tex.linebreak did not take the given left and right skip, but
1285 instead used the current TeX-side values (bug #356).
1287 * the found 'MAKE' command in build.sh is now fed into configure to fix
1288 problems with that not finding GNU make even when it is actually
1291 * dofile(<nil>) and loadfile(<nil>) in batch mode now give an
1292 error and continue instead of pointlessly waiting for user input.
1294 * Reverted commit #3417 (the buildpage experiment) as it causes bad
1295 things to happen when items are waiting during page breaks.
1297 * Overrule loaders[4] in --safer mode, make require() behave
1298 closer to normal lua 5.1, and add some nicer error messages
1299 (based on an email and patches from Manuel Pegourie-Gonnard)
1301 * Added an extra sanity check for GDEF loading in luafontloader,
1302 based on a crash caused by Linux' AkaashNormal.ttf.
1305 ==============================================================
1306 Luatex beta-0.52.0 was released 20100316
1307 ==============================================================
1311 * Various small manual improvements.
1313 * A better version of getluatexsvnversion.sh, from Tomek.
1315 * node.copy_list() now allows the second (optional) argument to
1318 * An import of the current state of the texlive repository
1319 (kpathsea and build system).
1323 * An attempt fix for bug #345 (math kerning is not perfect): when the
1324 current math font is a new math font, check against \catcode <cur_c>
1325 == 11 to suppress the italic correction, instead of looking at
1326 the value of space(<cur_f>).
1328 * There is a new <tfmtable> key: 'units_per_em' (defaults to 0).
1329 This is part of a fix for bug #200 (Problem with CFF fonts having
1330 em-size other than 1000): there is a special correction to the
1331 embedded cff font itself and the font scale if the font to be output
1332 is opentype or type1 in unicode encoding and the 'units_per_em
1334 <tfmtable>.units_per_em has to be passed back to luatex from
1335 the lua font loading code for this to work.
1337 * A fix for bug #314 (problem with pk file).
1339 * lua code can no longer change the internal preallocated glue_spec
1340 nodes (as that resulted in weird spacing bugs). For this, glue_specs
1341 now have a new field: 'writable'. If that field is false, a copy
1342 has to be made of the glue_spec instead of doing an assignment
1345 * Setting of \textdir inside the output routine could trash output
1346 on following pages due to a lingering internal variable.
1348 * \pdfthread crashed because the arguments were handled in reverse
1351 ==============================================================
1352 Luatex beta-0.51.0 was released 20100312
1353 ==============================================================
1357 * Various small manual improvements.
1358 * The backend message "cannot open Type 1 font file for reading"
1359 now reports which Type1 font it was looking for.
1360 * Fontforge clears some font names at loading time that will be
1361 refilled in at font generation time, but the fontloader should not
1362 do that. Patch from Khaled Hosny.
1363 * New synctex code imported from TeXLive.
1364 * luamd5/md5.h is renamed to luamd5/luamd5.h to avoid confusion.
1365 * Embedded mplib is now 1.209.
1366 * Some experimental tweaking of buildpage_filter, see the manual
1368 * Luatex now detects kfreebsd (from Alan Braslau)
1369 * The new lua function tex.sp() converts a string to a number
1370 representing scaled points.
1371 * There is now support for revision numbers in the banner and stats
1373 * The command line help and manual documentation page is extended.
1374 * node.hpack() now also accepts "cal_expand_ratio" and "subst_ex_font"
1376 * node.hpack() and node.vpack() now give back the badness of the box
1377 as second return value.
1378 * node.copy_list() now allows a second (stop) argument, this stopper
1380 * new lua functions in lfs: lfs.readlink() and lfs.shortname().
1381 * new lua function tex.tprint() that can combine multiple catcode
1382 regime prints in one function call.
1383 * new lua sub-table: tex.nest[] (read/write access to the semantic
1385 * New lua functions in kpse: kpse.lookup() and kpse.version(). See
1386 the manual for more details.
1387 * New lua function tex.shipout().
1391 * There problems in the pdf output for Type3 (pk) fonts.
1392 * Fix a bug that allowed bad commandline quoting.
1393 * Fix a bug that sometimes caused crashes when \pdfprotrudechars.
1394 * The build script now exports CONFIG_SHELL to avoid problems with
1396 * The was a bug in the generated /Image /ProcSet.
1397 * status.font_bytes reported the wrong value.
1398 * Lots of compiler warnings are removed (thanks Javier Mugica).
1399 * Patch to fontloader.info() to accept filenames with embedded
1401 * Fix a \write error with docstrip package.
1402 * Fixed a crash on AdobeMyungjoStd-Medium.otf.
1403 * Fix coco stack overflows, needed for lpeg.
1404 * \pdfcompresslevel wasn't initialized for early immediate objects.
1405 * Fix for slanted fonts when HZ was on (slant angle was multiplied).
1406 * When concatenating content streams, put a space between them.
1407 * Allow pfb lines to end with \r as well as \n (for msam10.pfb).
1408 * Fix the internal string->scaled point conversion in the lua
1410 * Memory leaks in the fontloader removed, thanks to patches from
1412 * Fix a crash caused by the combination of coroutines and font.each().
1416 * Support for Type3 .pgc files (nobody used them).
1418 ==============================================================
1419 Luatex beta-0.50.0 was released 20091224
1420 ==============================================================
1424 * Fonts now listen also to the 'extend' key in the lua font
1425 metrics table, and the processing for this is done via de
1426 pdf text matrix instead of via the font matrix, which means
1427 it now works for all font types.
1429 * The embedded Metapost library is now at version 1.209.
1433 * It is no longer possible for fonts from embedded pdf files
1434 to be replaced by / merged with the document fonts of the
1435 enveloping pdf. This regression may be temporary, depending
1436 on how the rewritten font backend will look after beta 0.60.
1440 * Use of \middle confused the \mathstyle operation.
1442 * \pdfcolorstack handling was broken.
1444 * node.unset_attribute() had a bug whereby it inverted the
1445 requested result in some cases (the node on which the unset
1446 was called was sometimes the only node at the current level
1447 that *kept* the attribute).
1449 * During font expansion, the internal font copy had one character
1450 information object less than the original, resulting in the
1451 disappearance of a glyph in some fonts when font expansion
1454 * Placement of operator scripts of OT MATH fonts is adjusted
1455 to be conformant with Word's logic where the italic correction
1456 is only used to tuck in the subscript and for nothing else.
1458 * luafontloader.open() no longer writes directly to stderr in
1459 case of internal font errors.
1461 * Any <pdf_refobj_node>.objnum could not be assigned to.
1463 * The lua 'pdf' table could not be assigned to.
1465 * The lua 'md5' library was returning incorrect results on
1466 64-bit architectures.
1468 * Luatex now compiles on GNU Hurd systems.
1470 * Fix segfault when embedding stream file object (these
1471 backend segfaults were a side-effect of the string pool
1474 ==============================================================
1475 Luatex beta-0.47.0 was released 20091218
1476 ==============================================================
1480 * New read-write lua variables pdf.pdfcatalog, pdf.pdfnames,
1481 pdf.pdfinfo, pdf.pdftrailer
1483 * The horizontal mode nodes that are added to lines during line
1484 breaking now inherit the attributes from the first and last node
1485 inside the created line.
1487 * The new function pdf.registerannot(<number>) registers an
1488 annotation object number to be included in the current
1489 page's /Annots list.
1491 * The variables <metrics>.Mathconstants.FractionDelimiterSize
1492 and <metrics>.Mathconstants.FractionDelimiterDisplayStyleSize
1493 are added to the font table. This allows proper setting of the
1494 size parameters for TeX's ...withdelims math primitives.
1496 * The internal representation of the string pool is reorganized
1497 (the pool of string characters is now allocated dynamically),
1498 and as a side-effect the lua variable status.init_pool_ptr
1499 is deprecated and will be removed in a later version. Also,
1500 status.pool_ptr now simply returns the current number of bytes
1501 in use for string characters.
1503 * There are new lua variables pdf.pdfmapline and pdf.pdfmapfile
1504 (write-only strings that mimic \pdfmapline and \pdfmapfile).
1506 * \pdfobj data and attribute are now stored as C strings instead
1507 of as token lists (this should speed up cases with a lot of data).
1509 * Artificially slanted fonts now work via the pdf text matrix
1510 (instead of adjusting the actual font) so that it now also
1511 works for non-Type1 fonts. The lua <metrics>.slant font key is
1512 now obeyed in all cases.
1514 * The lua function font.id(<string>) returns the internal font id
1515 number belonging to a control sequence name.
1517 * Pdf image inclusion is optimized such that objects from an
1518 external pdf will now be included only once even if they are
1519 referenced from multiple inclusions.
1523 * Protrusion for non-TLT documents did not work properly for
1524 the hyphenation character.
1526 * \lastbox could not remove the paragraph indent box for non-TLT
1529 * Pdf images (\pdfximage) are no longer kept open during the
1530 whole run, but closed and reopened. An error is raised if
1531 the file has changed between \pdfximage and \pdfrefximage.
1532 This prevents the 'too many open files' error when lots of
1533 images are included.
1535 * On Win32 Pdf image files are locked during the time that it is
1536 open, to prevent unnoticed file changes by external sources.
1538 * Compilation now again works on FreeBSD.
1540 * Format sharing between 32-bit and 64-bit architectures was
1543 * Unsetting attributes from lua could sometimes result in
1544 the unset state persisting beyond the current group level.
1546 * If something went wrong in the scanning of pdf action items,
1547 the error message reported the current primitive name
1550 * Luatex would crash on non-existant pdfs that were referenced
1551 from map file entries.
1553 ==============================================================
1554 Luatex beta-0.46.0 was released 20091126
1555 ==============================================================
1559 * The build.sh script now has better support for new MacOSX-es
1562 * Luatex now has experimental support for dynamic loading of
1563 external compiled lua libraries. Building luatex and loading
1564 external .so/.dll files is reported to work on Windows,
1565 linux and osx, other platforms are still unknown.
1567 * pdf.obj{type="stream"} no longer converts its argument to and
1568 from a tokenlist. This allows the use of binary data in the
1569 "string" argument. Such data does still have to hidden from
1570 the normal file parser by putting the code in a dofile()
1571 or by using string.char(), though.
1575 * Luatex 0.45.0 was not able to find truetype nor opentype fonts
1576 if there were no callbacks defined (patch from Pawel).
1578 * 0.45.0 printed the user input instead of the full pathname
1579 for \input-ed tex files.
1581 * The TFM reader now rejects fonts with tfm names that are
1582 longer than 255 characters because such font names cannot
1583 be stored in a DVI file.
1585 * The combination of \immediate\pdfxform followed by a later
1586 \pdfrefxform could cause broken pdf output files because
1587 the box used for the form could have been freed and even
1588 reused already at that moment in time, sometimes resulting
1589 in an invalid transformation matrix.
1591 * The placement of super- and subscripts for displaystyle
1592 \int's in CambriaMath is now better than before. It still
1593 needs a tweak to the metrics though: in the current version,
1594 the italic correction has to be substracted from the width
1595 of the integral sign to get correct placement (context mkiv
1596 does this). to be continued ...
1598 ==============================================================
1599 Luatex beta-0.45.0 was released 20091118
1600 ==============================================================
1604 * Loading big OTF fonts via lua is now much faster than before,
1605 at the expense of a bit of precision loss in the calculated
1608 * Two new token lists are provided: \pdfxformresources and
1609 \pdfxformattr, as an alternative to \pdfxform keywords.
1611 * \input and \openin now accept braced filenames.
1613 * The \endlinechar can now be set to any value between 0 and 127.
1615 * Luatex can now optionally use kpathsea to find lua require()
1618 * The new primitives \aligntab and \alignmark are aliases for
1619 the use of & and # in alignments.
1621 * \pdfrefximage [width <dimen>] [height <dimen>] [depth <dimen>] <imageref>
1622 overrules settings from \pdfximage for this \pdfrefximage call only
1624 * The print precision for small numbers in lua code (tostring)
1627 * Akira Kakuto suppled a patch that restricts writing to files
1628 with names such as latex.bat etc. (on windows only)
1630 * (un-feature): from now on luatex now only handles 4 direction
1631 specifiers: TLT (latin), TRT (arabic), RTT (cjk), and LTL
1632 (mongolian). The other directions now generate an error.
1634 * (un-feature): xpdf's automatic lower- and uppercasing retry attempts
1635 for nonfound image pdf files has been removed.
1637 * The callbacks hpack_filter, vpack_filter and pre_output_filter
1638 pass on an extra string argument for the direction, when known
1639 (nil == use default).
1641 * The lua functions node.hpack(), node.vpack() and node.dimensions()
1642 now accept an optional direction argument (not given == use default).
1644 * \pdfrefxform [width <dimen>] [height <dimen>] [depth <dimen>] <formref>
1645 scales a form object; similar principle as with \pdfximage: depth alone
1646 doesn't scale, it shifts vertically.
1648 * A change to the relative ordering inside font name discovery for use
1649 by the backend: now it tries <f>.psname first, as that is much less
1650 likely to contain spaces.
1652 * For ttc fonts, now the used subfont name and its index id are printed
1653 to the terminal, and if the backend cannot find a ttc subfont, the
1658 * Prevent crashes for lua-loaded fonts without a (tfm) name.
1660 * Remove spurious newlines in the output pdf that could be the
1661 result of using \pdfximage for an included pdf figure too early.
1663 * Full font embedding for wide otf and ttf fonts now really
1664 works (older versions only pretended that it did work).
1666 * node.dimensions() sometimes continued past the 'stop' node.
1668 * Images inside virtual fonts were broken.
1670 * The processing of \language=-1 was wrong, resulting in
1671 hyphenation attempts even though there was no proper language
1674 * Fix for finding files in --output-directory.
1676 * Fix for handling of --file-line-error.
1678 * tex.box[] assingments are now checked to make sure the assigned
1679 node has the right id (hlist or vlist).
1681 * show_node_list (as in \showbox) produced spurious local_par
1682 whatsit prints in the output after direction nodes.
1684 * The handling of pdf literals has been sped up.
1686 ==============================================================
1687 Luatex beta-0.44.0 was released 20091027
1688 ==============================================================
1692 * libpng is now 1.2.40.
1694 * hlist nodes now have a subtype to distinguish hlists generated
1695 by the paragraph breaking, explicit \hbox commands, and other
1696 (as-yet-undefined) sources.
1698 * \pdfobj now has an extra optional keyword: 'uncompressed',
1699 which forces the object to be written to the PDF in plain
1700 text (see the manual for the exact details).
1702 * The lua file from the luamd5 library (which provides the
1703 md5.hexsuma() function) is now embedded in the executable.
1707 * \latelua now works in DVI mode again.
1709 * status.output_file_name could crash when used too soon.
1711 * In 0.43, rules were not output at all in DVI mode.
1713 * \leavevmode\penalty-10000\penalty-10000 crashed luatex.
1715 * the API of margin kern nodes to lua was using the wrong
1716 fields in the nodes.
1718 * A few fixes to the manual.
1720 * PDF Xref stream dicts were slightly non-conformant.
1722 * There was too much space between two consecutive math displays
1723 (this bug was inherited from Aleph)
1725 * Synctex was broken (thanks, Akira)
1727 * Font mark classes were handled incorrectly by the fontloader
1730 * There was a crash possible with certain types of named PDF
1733 * Math delimiters and large operators in new MATH fonts no
1734 longer apply the italic correction (this fixes placements
1735 of super- and subscripts on such items for those fonts).
1737 * The converter from lua strings to token lists (for the node
1738 interface) sometimes generated invalid tokens.
1740 * CFF (OpenType) fonts now listen to 'embedding="full"'. TTF
1743 * Font tables with 'embedding="no"' would cause luatex to crash.
1745 * \pdfobj file {} failed to find the file if there was no lua
1748 * An optimization in MS Mincho caused luatex to crash.
1750 ==============================================================
1751 Luatex beta-0.43.0 was released 20090819
1752 ==============================================================
1756 * There is a new allowed key in the table trhat is returned
1757 by lua-loaded fonts: <f>.psname. This value should be set
1758 to the original PostScript font name of the font. Fonts inside
1759 dfont and ttc collections are fetched using this field
1760 (if it is missing, <f>.fullname will be used instead).
1762 * It is now possible to use Apple dfont font files
1763 (those that contain at least one outline font).
1765 * \latelua is now allowed inside leaders.
1767 * There is a new callback: process_output_buffer, from Manuel
1768 Pégourié-Gonnard. This callback is called just before
1769 \write acts, so it can be used to alter the file encoding
1770 of text output files.
1772 * There is a new node.dimensions() function, which calculates
1773 the natural size of (part of) a list of nodes.
1775 * The new primitive \gleaders provides 'globally aligned'
1778 * The DVI and PDF backends now share much code internally.
1780 * The embedded MPlib is now 1.207.
1782 * libpng is now 1.2.39.
1786 * We fixed lots of anonymous bugs introduced in 0.42.0 (as expected)
1788 * fontloader.info() errors are no longer fatal, the function now
1789 just returns a nil,"error string" pair.
1791 * Automatically inserted kerns for \accents are now once again
1792 valid word ends, as in \TEX.
1794 * Fixed the placement of math displays in mixed direction
1797 * The \pdfcompresslevel is now dynamic again.
1799 ==============================================================
1800 Luatex beta-0.42.0 was released 20090717
1801 ==============================================================
1803 * There is a new node.tail() function
1805 * lua-loaded fonts now support a 'nomath' key to speed up
1806 loading the lua table.
1808 * A bugfix in the ttf reader for the inclusion backend, and
1809 (also in the backend) support for treating ttc files by
1810 pretending they are single ttf fonts (both patches from pdftex)
1812 * Add Khaled Hosny's man page to the repository
1814 * The \pdfcompresslevel is now effectively fixed as soon as
1815 output to the pdf file has occurred.
1817 * Patched status.filename so that it (nearly) always returns a
1820 * fix '\the\delcode' and disable '\the\odelcode', '\the\Udelcode',
1821 and '\the\Udelcodenum'
1823 * Handle jfifs where either xres or yres is 0 and the other
1824 res is != 0 (from pdftex)
1826 * The single-argument version of lang.hyphenate() was broken.
1828 * Get rid of the \directlua/\latelua number warning.
1830 * The Lua coroutine patch (coco) is now disabled on linux
1831 powerpc architectures (because it caused crashes)
1833 * Removed obsolete pdftex primitives:
1834 \pdfoptionalwaysusepdfpagebox
1835 \pdfoptionpdfinclusionerrorlevel
1839 * The loading speed of large fonts (especially ttf) via the
1840 fontloader library, and the inclusion speed for subsetting
1841 in the backend have both been improved.
1843 * The 'pdf' lua library has been enhanced with various new
1844 functions, see the manual for details.
1846 * BLT and BRT glyph position fixed.
1848 * Various fixes for synctex offsets.
1850 * Support for exotic font string encodings has been removed
1851 from the fontloader library.
1853 * The embedded MPlib is now 1.205.
1855 * libpng is now 1.2.38.
1857 ==============================================================
1858 Luatex beta-0.40.6 was released 20090625
1859 ==============================================================
1861 * Fix two string vs. toks bugs in the lua node interface:
1862 whatsit,annot and whatsit,startlink data assignments were
1863 made directly as strings instead of being converted to tokens.
1865 * Sometimes pdf.print() could be used before the proper structures
1868 * There was a bug in the type codes for the lua package filter
1869 callback: wrong extra info was passed to lua for the alignment
1872 * The math parameters \Umathlimitdownvgap, \Umathlimitdownbgap,
1873 and \Umathlimitdownkern have been renamed to \Umathlimitbelowbgap,
1874 \Umathlimitbelowvgap, and \Umathlimitbelowkern to be more
1875 consistent with the other parameter names.
1877 * The embedded MPlib is now 1.204.
1879 * Handling of UTF-8 hyphenation exceptions has been fixed.
1881 * There were a number of typos in the manual.
1883 ==============================================================
1884 Luatex beta-0.40.5 was released 20090610
1885 ==============================================================
1887 * One of the internal print functions accidentally encoded its
1888 argument string to UTF-8 even though it was already UTF-8.
1890 * Some of the log and terminal UTF-8 output was gibberish.
1892 ==============================================================
1893 Luatex beta-0.40.4 was released 20090609
1894 ==============================================================
1896 * \the\textfont0 returned a number instead of doing a font
1899 * The embedded MPlib is now 1.203.
1901 ==============================================================
1902 Luatex beta-0.40.3 was released 20090608
1903 ==============================================================
1905 * A set of portability fixes for the AIX compiler from Vladimir
1908 * A set of fixes to the synctex support.
1910 * A patch to the build script to prevent installed X11 headers
1911 from being required.
1913 * Some weave (web syntax) fixes from Manuel Pégourié-Gonnard.
1915 * A simplification in luatex.ch (it is now less verbose
1916 about the web2c-specific extensions) from Karl Berry.
1918 * A fix in the handling of UTF-8 (input) file names.
1920 * Hyphenation exceptions were case sensitive in 0.40.2.
1922 * libpng is now 1.2.37.
1924 ==============================================================
1925 Luatex beta-0.40.2 was released 20090603
1926 ==============================================================
1928 * Fix for a compilation warning under Cygwin.
1930 * A complicated bugfix by Hartmut for a rounding problem in the
1931 VF loading that resulted in 'character width mismatch in font
1932 XY.vf ignored' messages at large load sizes
1934 * The embedded MPlib is now 1.202.
1936 * The post_page_number callback was accidentally run when
1937 shipping out xforms as well as during actual pages.
1939 * When a math accent char doesn't have a bot_accent placer,
1940 luatex now uses the top_accent placer, if present.
1942 * A crash caused by \Uroot .. {<list>}{...} is fixed
1944 * A portability fix for solaris 8 sparc using sun studio
1945 compiler, and one for glibc > 2.9.90
1947 * luatex -ini now sets the \catcode of the BOM character to
1950 * Kpathsea is updated from TeXLive, giving four extra types of
1951 searchable files: 'font feature files','cid maps','mlbib',
1954 * libpng is now 1.2.36
1956 ==============================================================
1957 Luatex beta-0.40.1 was released 20090508
1958 ==============================================================
1960 * Vertical placement of root radicals and degrees is fixed.
1962 * The use of \pageleftoffset could deviate from \hoffset
1965 * LuaTeX now issues a warning if \pagedir !- \bodydir during
1968 * The previous crash in font.read_tfm() was still not quite
1971 * The Web2C version is now also printed in the --version
1972 and --credits output.
1975 * There is a new MPlib 1.200 release candidate with a few minor
1978 * The xpdf library is updated to patch level 3.
1980 * New imports to the build system, from texlive. In particular,
1981 there is now configure-level support for building with
1982 libpoppler and support for building under cygwin 1.7 is added.
1984 ==============================================================
1985 Luatex beta-0.40.0 was released 20090422
1986 ==============================================================
1988 * The embedded MPlib is updated to version 1.200.
1990 * Texlua would crash if run font.read_tfm() was used.
1992 * Luatex would crash on empty \patterns.
1994 * Lots of small C code cleanups.
1996 * \textdir inside a \hbox dir *** was wrong earlier.
1998 * 0.39.0 introduced a bug that would make luatex crash whenever
1999 font expansion was used.
2001 * Font tables returned by define_font can now have a key named
2002 'cache' that controls the internal lua font table caching.
2004 * There is no longer a need for an explicit --progname if there
2005 is no input file given.
2007 ==============================================================
2008 Luatex beta-0.39.0 was released 20090415
2009 ==============================================================
2011 * iniluatex will from now on start up with only the TeX82 primitives
2012 and \directlua, everything else has to be bootstrapped via
2013 tex.enableprimitives(). This change was planned for 0.40.0,
2014 but *now* is the time to test it.
2016 * A bugfix for \primitive in various expandable contexts,
2017 and \primitive now generates an error message when the
2018 argument is not actually a primitive's name.
2020 * There was a bug found in the math accent handling.
2022 * Large math operators are now treated like extensible characters
2023 in the sense that they can be composed of segments.
2025 * The extra assign- and restore tracing information from eTeX
2026 had a massive bug because of a dangling else in the pascal web.
2027 As a side-effect of fixing this bugs, all such potential errors
2028 in the pascal web have been fixed (for now).
2030 * The math parameters can now be set and queried from lua code
2031 via the new tex.setmath() and tex.getmath() functions.
2033 * Reflection in a \hbox was broken.
2035 * There was a leak of direction nodes in the paragraph builder.
2037 * The font backend now does a small peek to differentiate
2038 truetype and postscript style opentype fonts. This fixes
2039 the "Can't find CFF table" bug for otf's with truetype outlines.
2041 * Parameters and registers can now also be assinged to globally
2042 from lua (see the manual for details).
2044 * It is now possible to query the current math style while a
2045 formula is still being constructed by using the new read-only
2046 value \mathstyle. Associated is the new command \Ustack that
2047 is to be used as a prefix for {.. \over ..} and friends.
2048 See the manual for more information.
2050 * The embedded MPLib is brought up to date with the current
2051 metapost repository (version 1.110 and a few small patches).
2053 * Luatex can now handle two breakpoints inside a single ligature
2054 (like for the functional word of-f-ice). The solution is not
2055 perfect yet, but the chance of missed hyphenation points in
2056 actual documents should now be negligible.
2058 * Some speedups in the font loading code, and in the handling of
2059 pdf_literal nodes that are set from within Lua code.
2061 * Some source code and manual cleanup, as usual.
2063 ==============================================================
2064 Luatex beta-0.38.0 was released 20090410
2065 ==============================================================
2067 * tex.enableprimitives() had a bug were previously defined (but
2068 currently undefined) control sequences prevented the creation
2071 * The special calling format callback.register('name', false)
2072 not only disables the callback, but also the builtin code it
2073 is supposed to replace.
2075 * Empty \localleftbox and \localrightbox -es are now suppressed.
2077 * Support for <f>.MathConstants.SubscriptShiftDownWithSuperscript
2078 was added, to solve the lack of "sub2" in OpenType math.
2080 * Luatex now supports horizontal super- and subscript placement
2081 corrections via the OpenType MATH mathkern table. See the
2084 * node.write() no longer copies its argument node list before
2087 * There are six new primitives that are verbose forms
2088 of one and two byte special tokens:
2089 \Usuperscript \Usubscript
2090 \Ustartmath \Ustopmath
2091 \Ustartdisplaymath \Ustopdisplaymath
2093 * The attribute node leaks in math mode and alignmetns have been
2096 * The 11 simple math noads are now combined into a single "noad"
2099 * Static linking against libstdc++ is working once again.
2101 * There is a small fix in the keyword scanner to solve the
2102 problem of 'Runaway ... while scanning ???' that could happen
2103 for some primitives.
2105 * Lua now also has the "architecture independent bytecode"
2108 * Lua is updated to version 5.1.4 with coco patches 1.1.5, and
2111 * Some TRT/TLT backend bugs are fixed.
2113 * Various manual updates.
2115 ==============================================================
2116 Luatex beta-0.37.0 was released 20090331
2117 ==============================================================
2119 * Luatex now implements shell_escape = 'p', a new feature
2120 in web2c that intends to make \write18 more secure. As
2121 a side-effect, if luatex is used for typesetting, it will
2122 now also apply shell_escape = 'p' and shell_escape = 'f'
2123 to the lua functions io.popen(), os.execute(), os.exec(),
2125 Nothing has changed for the case where luatex is used as
2126 a script interpreter.
2128 * Attributes can now have negative values. The special value
2129 for 'unset' is lowered to -0x7FFFFFFF (it used to be -1).
2131 * The lua 'kpse' library now has an object-oriented interface
2132 as companion to the procedural interface. This is useful for
2133 e.g. controlling the discovery of mplib files.
2135 * The new internal integer parameter \outputbox allows setting
2136 of the output box number (default: 255, max: 65535)
2138 * The new primitives \Udelimiterunder and \Udelimiterover
2139 complete the set of 'StretchStacks' for OpenType Math.
2141 * Fixed a bug in font string conversions on the Macintosh that
2142 resulted in warnings about 'unaligned pointers being freed'.
2144 * Khaled Hosny spotted a bunch of manual errors.
2146 * There was bug in the width of math_accent objects when
2147 there were super- or subscripts attached to the accentee.
2149 * In PDF mode, TRT \leaders were bugged.
2151 * The source tree now uses the new texlive build system that
2152 Peter Breitenlohner created.
2154 * There is now a single build.sh instead of four separate
2155 ones. It has a few options:
2156 --make : only make, no make distclean; configure
2157 --parallel : make -j 2 -l 3.0
2158 --nostrip : do not strip binary
2159 --mingw : crosscompile for mingw32 from i386-linux
2160 --ppc : crosscompile for ppc osx on intel osx
2162 Note: --parallel still sometimes causes crashes due to
2163 timing errors, so use that option with care.
2165 * Many compiler warnings have been removed (but not all yet).
2167 ==============================================================
2168 Luatex beta-0.36.0 was released 20090323
2169 ==============================================================
2171 * The included fontforge code is stripped considerably, and
2172 the lua table to access the code is renamed to 'fontloader'.
2173 The old name ('fontforge') will remain present for a while,
2174 but will eventually go away.
2176 * New lua functions: tex.primitives(), tex.extraprimitives,
2177 tex.enableprimitives(). This is a prelude to a big change
2178 in the next beta: iniluatex will from now on start up with
2179 only the TeX82 primitives and \directlua, everything else
2180 has to be bootstrapped via tex.enableprimitives().
2181 See the manual for more details.
2183 * Support for multiple lua states has been removed, and at the
2184 same time support for adding name ids to lua chunks has been
2185 added. See the manual for more details.
2187 * More changes to the PDF backend to make it support non-latin
2188 directions (form and image placement, vertical typesetting,
2191 * The kpathsea library is updated. Highlights: cleaner build
2192 process (thanks to Peter Breitenlohner), cleaner mingw32
2193 (cross)compilation support, and a new reentrant API.
2195 * Some possible endless loops within extended delimiters in
2196 math mode are now trapped.
2198 * Movements inside VF font characters were considerably off
2199 due to a wrong conversion routine.
2201 * Error handling for \outer has been reinstated, but can be
2202 suppressed via the new primitive \suppressoutererror.
2204 * The new primitives: \suppresslongerror and \suppressifcsnameerror
2205 that can be used to suppress errors for \par in non-long macros
2206 and for non-expandable objects inside \ifcsname ... \endcsname,
2209 * New lua function: node.vpack() via a patch from Khaled Hosny
2210 that also improves error handling in node.hpack().
2212 * Fix the typo that caused \charic (instead of \charit)
2213 to be defined as a primitive.
2215 * Suppression of hyphenation via \hyphenchar\font=-1 now works
2218 * The lua functions tex.print(), tex.sprint(), tex.write() now
2219 accept an array of strings as well as vararg list of strings
2222 * A change to be build process: luatex.p is no longer split
2223 int smaller pieces before running the C compiler.
2225 * Melissa O'Neill contributed a bugfix to the Type1 font
2228 * A bunch of smaller bugfixes and cleanups (as usual).
2230 ==============================================================
2231 Luatex beta-0.35.0 was released 20090224
2232 ==============================================================
2234 * The math handling portions of LuaTeX are converted to C code,
2235 and extended to support Unicode math. There are a great many
2236 related changes, see the new Math chapter in the manual for
2239 * A nasty bug in the paragraph breaking routine was fixed.
2240 (All lines except the first one were believed to be wider then
2241 they really were. This affected which nodes were considered
2242 as active breakpoints)
2244 * Various changes to the PDF backend to make it support non-latin
2247 * Fixed the behaviour of the page offsets. Placement of the output
2248 on the physical page should now work correctly in all directions,
2249 both in DVI and PDF.
2250 There now are \pageleftoffset and \pagetopoffset primitives,
2253 * fontforge.apply_featurefile() was broken since 0.31.0
2255 * The lua profiler library is added.
2257 * The included lua filesystem library is now 1.4.1.
2259 * Reading of pk files fixed.
2261 * An optional space afer a <direction specifier> for \textdir c.s.
2262 is ignored from now on.
2264 * \bodydir and \pagedir can now be (re)set even after the first
2265 page has been output.
2267 * The new callback mlist_to_hlist can be used to intercept the
2268 normal conversion of math lists to horizontal lists.
2270 * The programs ttf2afm and pdftosrc are removed from the luatex
2271 distribution (these belong to pdftex).
2273 * fontforge.open() now uses much less memory when opening large
2276 * The included libpng is now 1.2.35.
2278 * Quite a lot of smaller bugfixes and cleanups (as usual).
2281 ==============================================================
2282 Luatex beta-0.31.3 was released 20081229
2283 ==============================================================
2285 This release has a bunch of updates from the development trunk
2286 (#1657-1670,1677,1678,1680,1685,1687).
2288 * Closing of files opened by \externalocp.
2290 * Fix for a locale-related bug that make PDF generation fail
2291 with a "Parsing CFF Dict failed" message when including
2294 * The included metapost is now version 1.102.
2296 * PDF rules in vertical modes in RL direction where output
2297 in the wrong direction
2299 * Fix for a crash on Apple fonts that contain a 'bsln' table.
2301 * The handling of the second argument to fontforge.open() was
2304 * The included libpng is now 1.2.34
2306 * Handling of ttc files on Windows was broken
2309 ==============================================================
2310 Luatex beta-0.31.2 was released 20081209
2311 ==============================================================
2313 Besides fixing building issues, this release has
2315 * A small fix for a crash that could happen when using
2318 * A fix in the format of fontforge.to_table output.
2319 (In 0.31.1 <font>.lookups was near-empty; the lookups
2320 were accidentally output as part of the gpos table).
2322 ==============================================================
2323 Luatex beta-0.31.1 was released 20081209
2324 ==============================================================
2326 fixed a bunch of compilation errors on various platforms, but
2327 with no other visible changes.
2330 ==============================================================
2331 Luatex beta-0.31.0 was released 20081205
2332 ==============================================================
2334 This is just an intermediate release so that some testing can be
2335 done on the updated fontforge embedding.
2337 * There are new fields being generated by fontforge.to_table(),
2338 and one or two old ones have been removed. These fields are /
2339 will be documented in the manual, but very briefly:
2341 - MATH table and associated information are now exported
2342 (the main reason for the new fontforge code)
2343 - Baseline data is now exported
2344 (perhaps usable in lua code)
2345 - Multiple Master / Glyph variation data is now exported
2346 (but useless, for now)
2347 - Mac Feature (AAT) information is now exported
2348 (perhaps usable in lua code)
2349 - If (lookup) names were saved via the PfED table, these
2350 will the exported instead of the default, generated names.
2351 (as requested by Yannis)
2353 * dfont is now treated as an archive format just like ttc
2354 when it comes to fontforge.info(). NOTE: that does not mean you
2355 can actually use them, because the backend doesn't know
2356 yet how to embed dfont fonts in the PDF, that is on the
2357 TODO list for the next big beta (0.40.0).
2359 * The executables are a lot larger than before. That is because
2360 much more of fontforge is included than before. Likely this
2361 will stay this way, because this makes upgrading the ff code
2362 much easier, and it means that luatex/FF potentially
2363 understands more font formats (after upgrading the backend,
2367 ==============================================================
2368 Luatex beta-0.30.3 was released 20081128
2369 ==============================================================
2371 This release fixes a really big bug, a few smaller ones,
2372 and has updates of png and mplib:
2374 * All hyphenation patterns that were anchored at the start or
2375 end of a word were ignored in luatex versions 0.25.X and 0.30.X
2376 (and possibly even earlier).
2378 * Repeated use of \language=-1 could result in "There is not room
2379 for another language".
2381 * The lua true coroutines patch (Coco) is now disabled on OpenBSD
2382 running on non-intel platforms.
2384 * The lua socket library is patched so that it will now compile on
2387 * Luatex now has libpng 1.2.33 and mplib 1.100
2389 ==============================================================
2390 Luatex beta-0.30.2 was released 20081020
2391 ==============================================================
2393 * The Lua coco change from 0.30.1 is reverted as it gave
2394 trouble on MacOSX. Lua coco on non-intel OpenBSD platforms
2395 is now explicitly turned off.
2397 * The lua file reading speedup in 0.30.1 broke reading of
2398 files larger than 100MB.
2400 * Reading of font-related files was broken when there was a find
2401 callback, but no read callback.
2403 * The texmf.cnf array size setup values were ignored whenever
2404 --lua was given on the commandline (instead of only when
2405 texconfig.kpse_init is set to false).
2407 * glyphs with negative widths resulted in incorrect horizontal
2408 placement (overlapping) of the string in the output PDF.
2410 * Using \latelua could sometimes result in an invalid output PDF,
2411 and the argument token list was expanded too early
2413 * There was a read buffer overrun in the mapfile parser
2415 * There are two new variables in the status table:
2416 status.callbacks and status.indirect_callbacks (execution counts).
2418 ==============================================================
2419 Luatex beta-0.30.1 was released 20081009
2420 ==============================================================
2422 * Invalid return values from the linebreak_filter callback
2423 are now handled gracefully (was crashing)
2424 * a preinstalled ctangle is no longer needed except when
2426 * In 0.30.0, the .notdef fix was incorrectly applied to
2427 truetype / opentype fonts.
2428 * A bunch of all memory leaks is fixed
2429 * In lua, f:read('*a') now uses signicantly less memory
2430 * The number of \catcodetables is now limited to 64KB
2432 * Luatex could crash if there were PDF images with and
2433 without page /Group included on the same page
2434 * Lua coco now always uses setjmp (for OpenBSD compatibility)
2435 * The embedded mplib is updated to the latest svn version
2436 * # marks (characters with catcode 6) are no longer doubled
2438 * Handling the nul character (U+0000) with catcode 13
2440 * Luatex could crash on win32 with an access violation
2441 because there was one predefined language too few
2442 (the one matching \language=-1)
2444 ==============================================================
2445 Luatex beta-0.30.0 was released 20080930
2446 ==============================================================
2450 * Readable \tex internal params that are counts, attrs, or dimens are
2451 now returned as numbers instead of strings, and skips as node objects.
2452 Read-write access to tex's skip registers added: tex.skip[0] etc.
2453 * new callback: 'linebreak_callback' to replace the internal paragraph
2455 * the tex table now supports more readable 'convert' values:
2456 tex.fontname, tex.pdffontname, tex.pdffontobjnum, tex.pdffontsize,
2457 tex.uniformdeviate, tex.number, tex.romannumeral, tex.pdfpageref,
2458 tex.pdfxformname (each takes a number as argument)
2459 * new readable parameter: tex.fontidentifier(number) returns the
2460 \csname associated with that font id
2461 * luatex now outputs \FONT<nr> instead of \^^@ in Overfull/Underfull
2462 messages if the font's id text is zero (like for expanded fonts) (#77)
2463 * luatex --version is split into --version and --credits
2464 * There is now (again) an svn revision number in luatex --version (#91)
2465 * Add support for more read-only internal access from lua:
2466 tex.lastpenalty, tex.lastkern, tex.lastskip, tex.lastnodetype,
2467 tex.inputlineno, tex.badness, tex.pdftexversion, tex.pdflastobj,
2468 tex.pdflastxform, tex.pdflastximage, tex.pdflastximagepages,
2469 tex.pdflastannot, tex.pdflastxpos, tex.pdflastypos, tex.pdfrandomseed,
2470 tex.pdflastlink, tex.luatexversion, tex.Alephversion,
2471 tex.Omegaversion, tex.Alephminorversion, tex.Omegaminorversion,
2472 tex.eTeXminorversion, tex.eTeXversion, tex.currentgrouplevel,
2473 tex.currentgrouptype, tex.currentiflevel, tex.currentiftype,
2474 tex.currentifbranch, tex.pdflastximagecolordepth (#81)
2475 * the old --src-specials are replaced by --synctex (#63)
2476 * the \expanded primitive is backported from pdftex 1.50 (#43)
2477 * luatex now comes with libpng 1.2.32
2478 * experimental: tex.definefont(string, number) associates a
2479 csname string with a font id number
2481 Bugs fixed compared to 0.29.0:
2483 * dashes were exported wrongly by MPlib
2484 * multi-item \discretionaries were broken in various ways (#78, mailinglist)
2485 * read_font_info was sometimes called recursively from lua-loaded
2487 * do_vf was sometimes called on lua-loaded fonts that where
2488 already known to be virtual
2489 * trailing junk in tfm files is now ignored (needed for ecrm fonts)
2490 * pdf_ignored_dimen was initialized too late, breaking \prevdepth
2491 handling and causing output lines to overlap eachother (#72)
2492 * pdf.immediateobj() had a printf-related bug
2493 * the fontname terminal logging is fixed for strange font file names
2494 * lua tex array assignments now listen to the globaldefs setting
2495 (tex.count[0] etc) (#92,partial)
2496 * \parshape was broken (#70)
2497 * there is no longer a ".tex" extension forced on very input file (#74)
2498 * eof() for mapfiles was true one byte too soon (#76)
2499 * out of range \lefthyphenmin and \righthyphenmin settings now actually
2500 disable hyphenation (#90)
2501 * tex.unset_attribute() looked too far ahead when a to-be-unset
2502 attribute id not only did not exist in the node, but was also
2503 higher than the highest set attribute on the node. (#65)
2504 * the parameters attr and page_name of read_image() were swapped
2505 (this broke \pdfimage with attributes)
2506 * tex filenames with spaces in them on the command line are now
2508 * sometimes pfb fonts were included multiple times without valid
2510 * some parts of the pdftex 1.40.9 PNG transparancy hack were still
2511 present and caused transparant png handling to fail
2512 * \localinterlinepenalty and \localbrokenpenalty were broken
2513 * special case catcode tables are now handled better (#23)
2514 * the handling of missing .notdef charstrings in old pfb fonts
2517 ==============================================================
2518 Luatex beta-0.29.0 was released 20080718
2519 ==============================================================
2524 * The embedded pdftex is now 1.40.9 (forthcoming) except for the
2526 - the png transparancy fix is skipped because it is in conflict
2527 with a macro-based solution offered by context mkiv.
2528 - LFS (PDF files > 2GiB) is not working yet.
2529 - Synctex is still missing
2531 * libpng, xpdf, and zlib are updated to their pdftex 1.0.9 levels
2533 * MPlib is updated to 1.090
2535 * The syntax of buildpage_filter is changed to avoid confusion
2536 (and crashes). See the manual for the new calling convention.
2538 Bugs fixed compared to 0.28.0:
2540 * The previous bugfix for \languages skipping numbers was wrong.
2542 * Various compile-time warnings are suppressed
2544 * \pdfsetmatrix was broken
2546 * \pdfsave and \pdfrestore were broken
2548 * Valid user_defined whatsits nevertheless were generating errors.
2551 ==============================================================
2552 Luatex beta-0.28.0 was released 20080630
2553 ==============================================================
2555 There is one new feature:
2557 There is now experimental support for non-trivial discretionaries
2558 following explicit hyphens. In analogy to \prehyphenchar and
2559 \posthyphenchar, there are two new parameters \preexhyphenchar en
2560 \postexhyphenchar. Both new parameters default to zero (nothing).
2561 When set to a nonzero value, the parameter is added to either the
2562 pre- or post- break text. Note that this is *in addition to* the
2563 hyphen already in the input. Testing and comments are very welcome.
2565 Here is a short example (no idea what is says):
2569 \postexhyphenchar=`-
2571 pudesse t\^e-lo mantido como amigo, mas por
2572 mais bem-intencionado que eu fosse, n\~ao
2578 Bugs fixed compared to 0.27.0:
2580 * Words that started off with a character with a zero \lccode
2581 were never hyphenated at all.
2583 * There was a bug in the new active characters code that prevented
2584 the latex format from being built (with Invalid character error).
2586 * There is a temporary fix for the sometimes appearing "Font has a
2587 bad FontBB" message from Acrobat.
2589 * \leaders did not actually stretch enough (the last bit of glue
2590 that has to line up the line endings was never output to the PDF).
2592 * Bad paragraph-related callbacks could result in luatex crashing.
2594 * The pre_linebreak and post_linebreak filters were never called
2595 when \output was active (this was a leftover of a superceded
2598 * 'skipping' language codes when setting up \patterns c.s. did not
2599 work (it used the next empty slot instead of the actual value of
2602 * Using multiple 'attr' keywords on box items could cause random
2605 * Calling lang.hyphenate() with one argument (without specifying a
2606 tail node) could crash.
2608 * The luatex pdf banner and version reporting is cleaned up a bit.
2610 * Conflicting patterns inside \patterns now give an error:
2611 ! Conflicting pattern ignored.
2612 (duplicate identical patterns are ignored without error).
2614 ==============================================================
2615 Luatex beta-0.27.0 was released 20080624
2616 ==============================================================
2618 Bugs fixed compared to 0.25.3:
2620 * Unicode reencoding support for non-standard (i.e. older)
2621 Type1 fonts is now somewhat less broken than it was (#25)
2623 * .vf fonts using specials crashed luatex
2625 * luatex would crash on --\par (#33)
2627 * An attempt is made to get a sane default value for StemV in
2628 the created pdf (#32)
2630 * We can now guarantee that %PDF-1.* header is printed before
2631 the first pdf.print() output
2633 * lang.hyphenate() was broken
2635 * insert_before(a,a,b) was broken (#37)
2637 * argv[0] is now cleaned up before being used as a default for
2638 mem_name and prog_name (#28).
2640 * luatex would crash on loading extended fonts (fonts loaded
2641 via lua callbacks) from a format file.
2643 * The fix for pdftex bug #799 is backported from pdftex 1.40.4.
2645 * slnunicode had a bug in the unicode.utf8.gmatch iterator.
2647 * Queries of nonexisting fontdimens could cause a crash.
2649 * luatex would crash on {\textdir TLT\pardir TLT x\break\par }
2651 * Fixed wrong placement of lines in mixed-direction paragraphs
2652 that could happen in some situations.
2655 * Luatex now includes luasocket (#35)
2656 See http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/
2658 There is a new commandline option: --nosocket to disable this,
2659 and that is also implied by --safer.
2661 NOTE to the binary builders: there are some unfixed configure
2662 problems when you need to add a specific library to get socket
2663 support on your platform. You probably will have to edit the
2664 generated Makefile by hand (search for 'socketlib').
2666 * There is ongoing development to the 'img' and 'mplib' libraries.
2667 See the reference manual for details.
2669 * The 'character commands' in virtual fonts now support image
2670 inclusion. See the reference manual for details.
2672 * Lua error messages now include the call stack.
2674 * \directlua and \latelua have been extended to accept a 'name'
2675 keyword. The argument is a token list that is used as the lua
2676 name of this chunk in lua error messages and call stack prints.
2679 * The lua chunk names can be interfaced via a new virtual
2680 table called lua.instancename, the values in that function as
2681 defaults in the absence of 'name' keywords.
2683 * The 2-plane limit on active character range is removed (#12).
2685 * Subsetted TTF fonts in the PDF now retain the cmap table.
2687 * There is a new Lua variable os.selfdir. This contains the
2688 full absolute pathname of the directory that the executable
2689 resides in (with symlinks resolved)
2691 * There is a new function os.uname() this returns a lua
2692 table containing various platform information items.
2694 * The node library now uses text strings for direction specifiers
2695 instead of numbers. See the reference manual for details.
2697 * The 'E' (edit) as error response functionality is now a noop.
2699 * Adding luatex 0.25.3 to texlive resulted in a few minor backports,
2700 in particular: Support for mktexfmt is added, and luatangle now
2701 identifies itself as such (instead of calling itself otangle).
2703 * We fixed a whole series of portability problems (but
2704 we probably introduced new problems as well).
2706 * Most (all?) files now have a corrected Copyright header,
2707 and link in NEWS source/texk/web2c/luatexdir/NEWS into the object file.
2709 * Some unnecessary files were removed from the distribution.
2711 ==============================================================
2712 Luatex beta-0.25.3 was released 20080418
2713 ==============================================================
2716 * Pdftex bug no. 936 (sarovar) regarding vertical
2717 positioning of embedded PDF files if depth parameter is given.
2718 * Luatex gave bogus lua return values for the tex.wd/hd/dp
2719 values of void boxes
2720 * A few bugfixes in mplib (square pens caused hangs, elliptical
2721 pens caused confused output)
2722 * Hyphenation of uppercase words (\uchyph) was broken
2723 * Output image placements corrected for all 8 transform cases
2724 also when artbox etc. is used
2725 * There were missing maketexstring() calls in error messages
2726 * Math display contents were sometimes prematurely freed during
2727 the placement of the equation number
2728 * Setting \language=-1 could cause crashes due to an array
2729 index going out-of-bounds
2732 * build.sh.ppc is added to the source distribution. This is a
2733 script that crosscompiles osx ppc binaries from osx intel
2734 * tex.box[<chardef name>] is now supported (but still experimental)
2735 * a bunch of compiler warnings are removed
2736 * The fontforge library now dump AAT feature tags as and
2738 * The new function font.nextid() predicts the next assigned font id
2739 * Some source code changes are backported from texlive
2741 ==============================================================
2742 Luatex beta-0.25.2 was released 20080410
2743 ==============================================================
2745 * Updated to MPlib 0.40
2746 * Bugfixes and cleanup in the lua img table code
2747 * Fix \pdflastximagepages bug from pdftex
2748 * Fix for very large tex.print strings
2749 * Update to Lpeg 0.8.1
2750 * &D Bugfix for Type1 fonts when out-of-range characters
2751 are marked as 'used'
2753 ==============================================================
2754 Luatex beta-0.25.1 was released 20080321
2755 ==============================================================
2757 * Updated to MPlib 0.30 (that is now becoming usable)
2758 * The build requirement for a pre-installed ctangle is gone
2761 ==============================================================
2762 Luatex beta-0.25.0 was released 20080311
2763 ==============================================================
2768 This version features an embedded MP interpreter whose output
2769 can be directly accessed from lua code (mplib), without calls
2770 to an external "mpost" command. Of course it has bugs and
2771 limitations (makempx does not work, for example) but keep in
2772 mind that it is only an initial attempt.
2773 See the manual for more details.
2775 ** img.immediatewrite() is added
2776 ** images now accept a 'transform' key
2777 ** widths etc. can now be given as width="100mm"
2781 * \parshape handling was completely broken since 0.20.0+
2782 * when \pdfprotrudechars was in effect, an assertion failure
2783 could happen when embedded \hboxes in the paragraph appeared
2784 at the end of a line.
2785 * import of otf fonts with contextual lookups has been debugged,
2786 thanks to a patch by GW himself.
2787 * compiling with gcc 4.2.3 is now supported
2788 * if you want to build from source, you need a pre-installed ctangle.
2791 ==============================================================
2792 Luatex beta-0.22.1 was released 20080227
2793 ==============================================================
2795 * The macnames.c source file for building ttf2afm is restored.
2796 * "make depend" in luatexdir now works again
2797 * luatex sometimes crashed because it attempted to expand an
2798 already expanded font
2799 * luatex aborted when --progname was given but no format name.
2800 It now sets the format name to the given progname in that case
2801 * sometimes paragraphs with near-empty lines could cause a crash
2802 * img.supportedtypes() had a bug causing it to crash
2803 * img.supportedtypes() has been renamed to img.types for consistency
2804 * img.boxes() added, returns strings representing bounding boxes
2805 * img.node() added, returns a whatsit node cf. \pdfrefximage
2806 * node.write() now accepts multiple arguments
2807 * the program_name_set switch was not set automatically from C,
2808 causing errors unless lua code called kpse.set_program_name()
2810 * kpse.set_program_name() can now be called more than once
2812 * os.spawn{...} and os.exec{...} could cause crashes because of
2813 a memory allocation error
2815 ==============================================================
2816 Luatex beta-0.22.0 was released 20080215
2817 ==============================================================
2819 * We now have an official bug tracker: http://tracker.luatex.org
2820 * A new lua library (img) is added that allows a direct
2821 interface to the image handling of luatex. You can use this
2822 to include images from lua code instead of via the more
2823 traditional \pdfximage cs. See the manual.
2824 * An optional equal sign after \{pre,post}hyphenchar is now
2826 * os.exec() has been extended, and os.spawn() added. These
2827 functions have support for quoted strings, and they
2828 also accept a table with preseparated command arguments.
2829 * New string constants os.type and os.name are provided.
2830 * node.last_node() is added. This pops and returns the last
2831 node from luatex's 'current list'
2832 * node.write() is added. This appends a node to the end of
2833 luatex's 'current list' (experimental).
2834 * The strict check on unicode compliance in pattern files
2835 is dropped. Patterns files still have to be in proper UTF-8
2836 encoding, but the error for non-Unicode character values
2837 (like 0 - 31 and 127 - 159) is dropped.
2838 * \pdfadjustinterwordglue, \prependkern, \appendkern
2839 and associated \XXXXcode arrays are gone.
2840 * The rest of the pdftex font arrays are now merged into
2841 the new luatex font data structure. This means that you
2842 can now set up font expansion from lua code, and that a few
2843 font-related limits are gone.
2844 * The 'top_skip' field in 'insert' nodes is renamed to 'spec',
2845 for improved consistency.
2846 * kpse.show_path() added. This behaves just like
2847 $ kpsewhich --show-path
2848 * The unicode.utf8 functions now also accept values in the range
2849 1.114.112 - 1.114.367 that is used by LUATEX for raw byte output.
2853 * Better node memory (de)allocation error tracking and messages
2854 * Compilation on MacOSX 10.5 was broken
2855 * There was a bug in node.insert_after
2856 * Use of \{pre,post}hyphenchar was broken
2857 * lfs.permissions was leaking memory
2858 * Some warning and error messages are improved a bit
2859 * A set of bugs in character protrusion, this seems to be working
2861 * Also, a set of bugs in font expansion. This now works in most
2862 cases but is not quite bugfree yet (problematic files for testing
2864 * The functions in the kpse library would crash luatex if
2865 kpse.set_program_name() was not yet called. gives an error now.
2866 * Alignments with spanned columns could cause crashes
2867 * A patch is added for problems with filename parsing on the
2868 "first input line" (by Jonathan Kew)
2869 * The hpack_filter and vpack_filter were only called for lists longer
2871 * Luatex is now more forgiving about font subsets being smaller
2872 than their expected size (issues a warning instead of aborts now)
2873 * A "double-free ignored" error for paragraphs with lines starting
2874 with discarded items was fixed.
2876 ==============================================================
2877 Luatex beta-0.20.2 was released 20071217
2878 ==============================================================
2880 * some portability fixes to the build scripts
2881 * a fix for multi-\span in alignments causing unbreakable
2883 * manual improvements from Jonathan Sauer
2884 * fix for undefined csnames in \directlua if
2885 web2c's hash_extra is nonzero
2886 * fix for LR text inside of a RL document
2887 * fix for open_read_file callback not being called
2888 unless find_read_file was also registered
2889 * removed the ocp status message when \ocps are not
2891 * "unicodeenc" in the fontforge to_table renamed to
2892 "unicode" for improved consistency
2894 ==============================================================
2895 Luatex beta-0.20.1 was released 20071207
2896 ==============================================================
2898 * texlua was broken on Solaris because the some C header
2899 files were loaded in the wrong order.
2900 * os.tmpdir() now accepts an argument, making it easier
2901 to use. It now generates more unique filenames when
2902 it is called repeatedly in one run.
2903 * The --luaconly commandline switch is now documented
2905 * The new extended hyphenation exceptions were severely
2907 * \pdfprotrudechars could cause luatex to abort with an
2909 * There was a bug in the \span code that could cause endless
2911 * The simple forms of \leaders were messed up on windows
2912 because a variable was not properly initialized.
2913 * Non-grouped \textdir commands created invalid output.
2914 * e-TeX's pseudo files were not closed properly in ini mode.
2915 * The luatex.web now weaves properly again.
2916 * I made some small improvements to the manual.
2918 ==============================================================
2919 Luatex beta-0.20.0 was released 20071205
2920 ==============================================================
2922 News compared to the last beta (0.11.2) is as follows:
2924 * Completely overhauled hyphenation and ligkern application,
2925 including the addition of a new "lang" table in lua to
2926 interface to the language parameters, some extra functions
2927 in the "node" table, and a few extra callbacks ("hyphenate",
2928 "ligaturing", "kerning", "post_linebreak_filter").
2930 There is a new chapter in the manual to document all the
2931 changes to the hyphenation and line breaking algorithms,
2932 it is simply too much to list here.
2934 * the interface of the pre_linebreak_filter,hpack_filter,
2935 vpack_filter, and pre_output_filter has changed slightly.
2937 * boxes can now get explicit attributes different from the
2938 currently active set, using a syntax like
2940 \hbox attr2=12 attr3=-1 to 12pt {Hi!}
2942 * lpeg is now at version 0.7
2944 * a whole series of exotic bugs and compiler warnings are
2945 fixed, mostly thanks to the watchful eye of Fabrice.
2947 * texio.print now accepts multiple strings as arguments.
2949 * the lua functions os.sleep(), os.times(), os.gettimeofday()
2950 and os.tmpdir() have been added.
2952 * lua now comes with the coroutine (coco) patches from the
2953 luajit project applied.
2955 * the banner line no longer claims to be TeX.
2957 * a bunch of bugs reported on the mailing list have been
2958 fixed (I hope all of them).
2960 * (internal) we found lots of small ways to speed up lua
2963 * (internal) the node (de)allocation functions have been
2964 rewritten, so that absolutely all nodes now have a type,
2965 even the ones with variable sizes.
2968 ==============================================================
2969 Luatex snapshot-20071029 was released 20071029
2970 ==============================================================
2972 * Completely overhauled hyphenation and ligkern application.
2974 There is a new chapter in the manual to document all the
2975 changes to the hyphenation and line breaking algorithms,
2976 it is simply too much to list here.
2978 * the interface of the pre_linebreak_filter,hpack_filter,
2979 vpack_filter, and pre_output_filter has changed slightly.
2981 * lpeg is now at version 0.7
2983 * a whole series of exotic bugs and compiler warnings are
2984 fixed thanks to the watchful eye of Fabrice.
2986 * texio.print now accepts multiple strings as arguments.
2988 * The lua function os.sleep() is added
2990 ==============================================================
2991 Luatex beta-0.11.2 was released 20070918
2992 ==============================================================
2994 * Pdf inclusion and subsetting of CID-based opentype fonts
2995 now works as it should.
2997 ==============================================================
2998 Luatex beta-0.11.1 was released 20070918
2999 ==============================================================
3001 A quick list of what is new and fixed since beta 0.10.2:
3004 * pfb+afm fonts can now be used in 'wide' (encodingbytes=2) mode
3005 * searching in PDFS using 'wide' fonts now works reasonably well
3006 (based on the tounicode feature)
3007 * related to that, tounicode information can now be passed
3008 on inside the font metrics table
3009 * font subsetting is now supported for CID-based OpenType fonts
3010 (however, there is a known bug with KpozMinProVI-Regular.otf)
3011 * fontforge's warning and error messages are now intercepted
3012 and passed on to the lua code as a second return value of
3013 the fontforge.open() function
3014 * the new primitive \suppressfontnotfounderror can suppress
3015 the TeX error for "Font not found"
3016 * The lua function font.current can now be used to set TeX's
3020 * set_attribute(-1) is now the same as unset_attribute()
3021 * OpenType lookups with glyph classes would crash luatex
3022 * luazlib would not compile on debian (fix from Norbert)
3023 * CID-based fonts would crash luatex
3024 * Bare CFF should be read in binary mode (fix from Akira)
3025 * VF processing did not process packets containing zero bytes properly
3026 * the truetype collection (.ttc) handling is fixed, so that all
3027 of the fonts inside a collection can now be used reliably
3028 * application segfaults and stack overflows are intercepted
3029 so that luatex can quit a bit more gracefully
3030 * an assertion failuer on systems with signed chars (linux-powerpc)
3032 * a crash on AMD64 linux was fixed
3033 * the lua "pdf" table code was wrong
3034 * \ifcsname did not work properly for UTF-8 characters
3035 * Use of the math-related functions using make_fraction (like \atop)
3037 * \handling of \if\noexpand was wrong
3038 * applied a patch that cleans up XForm and page calculations
3039 * "autoconf" support from zziplib is stripped
3041 ==============================================================
3042 Luatex beta-0.10.2 was released 20070814
3043 ==============================================================
3047 * the primitive \span was completely broken
3048 * \pdfexpandfont (font expansion) misbehaved if it was used more
3050 * virtual fonts: sometimes they used the wrong internal font id,
3051 loading vf fonts via fonts.read_vf() was impossible, and sometimes
3052 virtual fonts created segfaults
3053 * while dumping formats, the last font parameter for each font was not
3055 * zziplib was always compiled with pre-installed zlib headers, instead
3056 of the ones in the build tree
3057 * lua 5.1.2 has trouble quoting ^Z characters etc, the tentative patch
3058 for lua 5.2 from Luiz fixes that, hopefully
3059 * fontforge.font('font.pfb') now properly parses AFM boundingboxes
3060 * non-existing files in the argument for fontforge.open() or
3061 fontforge.info() could cause segfaults, now it generates an error
3063 * fontforge.open() did not return character widths for vertical fonts
3065 * on Windows, fontforge believed that ttc files (TrueType Collections)
3066 were actually directories. ttc processing is still not 100% correct,
3067 but it is getting better
3068 * the build system used explicit 'make' sometimes
3069 * the auto-growing string pool was not used everywhere
3070 * there were some typos in the documentation parts of the pascal web
3071 * use of \parshape could easily exhaust all available memory
3076 * support for applying Adobe Feature files (.fea) and Adobe Font
3077 Metrics (.afm) is added to the fontforge library
3078 * fontforge.info() will now return an array of tables for the contents
3080 * support for a 'texluac' personality was added, to replace the 'luac'
3081 command from the official Lua distribution
3083 ==============================================================
3084 Luatex beta-0.10.1 was released 20070719
3085 ==============================================================
3087 This was a hotfix because beta-0.10.0 was completely broken.
3089 ==============================================================
3090 Luatex beta-0.10.0 was released 20070718
3091 ==============================================================
3093 The latest version of the manual is included in the package, and I
3094 am not going to repeat all of that. There were some minor changes
3095 compared to the previous snapshot, but mostly just bugfixes and
3096 documentation improvements.
3098 ==============================================================
3099 Luatex snapshot-20070626 was released 20070626
3100 ==============================================================
3102 * Integrated the lua library lzlib, this defines tables with
3103 bindings for zlib (including eazy-to-use gzip support)
3104 * Updated to slnunicode version 1.1
3105 * Some small cleanups in the sparse array handling
3106 * Moved the raw byte support out of the valid unicode range
3107 * Fixed a bug in the OFM font reader
3108 * Removed the pdftex snap nodes (and associated primitives)
3111 ==============================================================
3112 Luatex snapshot-20070622 was released 20070622
3113 ==============================================================
3115 Not a lot of news, but it fixes a few important bugs in the lua
3116 node processing. Also a few utility functions are added:
3119 rounds and bounds checks a lua number to make sure it is
3120 a valid tex integer.
3122 multiplies a number (or the numeric values in a table)
3123 with a fixed quantity, and calls tex.round() on the result.
3125 Test if a node has a specified field name
3127 removes a node from a nodelist, while keeping the list intact
3128 * node.insert_before()
3129 inserts a new node into a nodelist, just before a specified
3131 * node.insert_before()
3132 inserts a new node into a nodelist, just after a specified
3135 packages a nodelist into a hlist node
3138 ==============================================================
3139 Luatex snapshot-20070619 was released 20070619
3140 ==============================================================
3142 * The lua node processing interface is completely reworked.
3143 It is now completely based on userdata, and uses a new lua table
3144 called 'node' to hold the methods. More detailed information
3145 is in the manual (of course).
3147 * There is a fifth node processing callback:
3149 this is executed just before the packaging of \box 255.
3151 * The hpack_filter and pre_linebreak_filter callbacks now
3152 receive an extra argument indicating the number of top-level
3153 glyphs in the node list.
3155 * Virtual fonts can now contain a 'node' key in the glyph
3156 commands: the value should be a hlist node (i.e.: a horizontal
3157 box), and that will then be output for each character access
3160 * A new set of registers is added, called \attribute. These are
3161 values that will be automatically attached to nodes created in
3162 their scope. More information in the manual.
3164 * Direct read/write access to TeX's box registers is addded to
3165 the lua 'tex' table.
3167 * TeX's main memory now grows dynamically, and the (de)allocation
3168 routines have been rewritten completely.
3170 * The 'kpse' table is extended with extra interface functions, to
3171 allow texlua to be used as a scripting engine.
3173 * The \pdftexversion command now returns 200, not 140.
3175 * The displayed banner and --version screens are cleaned up.
3177 * The format file is now RLE compressed. Not as small as before,
3178 but unpacking is much faster.
3181 ==============================================================
3182 Luatex snapshot-20070426 was released 20070426
3183 ==============================================================
3185 This past month I have been busy with nodes and lists of nodes,
3186 so the big new feature in this release is that there are four
3187 callbacks that operate on node lists:
3190 pre_linebreak_filter
3194 The preliminary documentation for these is in the manual, but the basic
3195 idea is that you can filter a node list just before LuaTeX starts doing
3196 something with it (like line breaking). This functionality is not stable
3197 yet: the node presentation of the various node types is pretty much OK
3198 now, but keep in mind the following:
3200 * math noads and math typesetting are not handled at all (yet)
3201 * not all hpacks and vpacks are intercepted (yet)
3202 * the nested node list handling will probably change
3203 * A conversion tool for nodes to/from dictionaries is planned,
3206 The other changes in this snapshot are various bugfixes (for builds
3207 on various platforms as well as font issues) and speedups (in the
3208 execution of callbacks and the creation of lua font representations).
3211 ==============================================================
3212 Luatex snapshot-20070322 was released 20070322
3213 ==============================================================
3215 * I have changed the token_filter callback quite rigorously,
3216 mostly because of speed issues. The raw speed of trivial
3217 lua token handling is now only about 20 times slower than
3218 the native handling. Not bad at all, considering it has to move
3219 between interpreted and compiled code for each and every
3220 token. If you do not run the token filter inside \output,
3221 the effective run speed difference should not be much more
3224 Two big differences: you have to call token.get_next()
3225 yourself, and the token table is now a three-item array
3226 instead of a five-key hash. The minimal example changes to
3229 callback.register('token_filter', function ()
3230 return token.get_next()
3234 more details are in the manual.
3236 * I've fixed a few bugs in the handling of Opentype TTF, and added
3237 a new key in the font definition table:
3239 f.encodingbytes = (1|2)
3241 The default is 2 for opentype and truetype format, 1 otherwise.
3242 Later on, it will become possible to have a type1 font in 2-byte
3243 (CID) encoding or a truetype font in traditional encoding (1-byte),
3244 but I have not covered all cases yet.
3248 ==============================================================
3249 Luatex snapshot-20070309 was released 20070309
3250 ==============================================================
3252 * The OCP debug information is removed again.
3254 * There is a new callback that I am quite excited about myself:
3258 A bit of text from the reference manual:
3259 --------------------
3260 This callback allows you to change the modify any lexical token that
3261 enters the \type{main_control} function before \LUATEX\ executes the
3264 Note: not all tokens can be intercepted yet, only those that are `seen'
3265 by \LUATEX's main control function. Supplemental tokens like the bodies
3266 of macro definitions and the right-hand side of register assignments
3267 are not seen. For now, this is intentional.
3270 function (table <token>)
3271 return table <token>
3275 Calling convention for this callback is bit more complicated then for
3276 most other callbacks. Initially, lua function will be called with the
3277 next token from \type{get_next()} as argument, represented as a small
3278 lua table. The function should either return a lua table representing
3279 a valid to-be-processed token, or something else like nil or an empty
3282 If your lua function does not return a table representing a valid
3283 token, it will be immediately called again with yet another token
3284 from \type{get_next()} as argument, until it eventually does return
3287 But if the function does return a usable token, then that token will
3288 be processed by \LUATEX. Afterwards, the function will be called
3289 again, but now without an argument. This is repeated until it stops
3290 returning tokens. Then processing reverts back to the other branch.
3292 The point behind that roundabout calling convention is that it
3293 allows the lua function to buffer tokens for various uses. That in
3294 turn makes it possible to do some really advanced things like
3297 Now about that table. The table that the function will receive
3298 contains four fields:
3300 \starttabulate[|l|i|p|]
3301 \NC Key \NC type \NC Explanation \NC\FR
3302 \NC cmd \NC string \NC A representation of \LUATEX's internal
3304 \NC chr \NC number \NC The command code modifier\NC\NR
3305 \NC cs \NC string \NC If the token came from a csname, this
3306 is that csname\NC\NR
3307 \NC mod \NC character \NC A single character string representing
3308 the current processing mode. One of {\bf v}ertical, {\bf h}orizontal,
3309 display {\bf m}ath, {\bf n}o, internal {\bf V}ertical,
3310 restricted {\bf H}orizontal, or inline {\bf M}ath mode.\NC\LR
3313 If you modify the table before returning it, then it is wise to return
3314 either a (\type{cmd}, \type{chr}) pair, or a \type{cs} string. That is
3315 because if both options are present, the pair has precedence and the
3316 string is ignored. On the return table, {\bf mod} is ignored always.
3319 I have no long example code yet and it is not as complete as one
3320 would want it to be because it is not intercepting everything that
3321 comes in, only the bits that are triggered by the main control
3324 I decided to do a fast snapshot release for two reasons:
3326 * It is one of the easier extensions to get started with if you want
3327 to learn a bit about lua programming
3329 * I would welcome feedback on the token interface, because it will
3330 be needed in other places as well, soon. I am still not sure
3331 whether converting the command to/from strings is worth it, for
3332 example. And maybe it would be less confusing if you could return
3333 a list of tokens instead of being called repeatedly?
3335 Here is the trivial example to get you started:
3338 callback.register('token_filter', function (t) return t end)
3342 ==============================================================
3343 Luatex snapshot-20070307 was released 20070307
3344 ==============================================================
3347 * Non-CID PostScript-based Opentype fonts are now combined over
3348 the entire document, and properly subsetted. The code is
3349 borrowed from xdvipdfmx with some minor adjustments
3351 Adding support for CID-keyed OpenType fonts would not be hard
3352 but at the moment I lack example input (and incentive).
3354 * A small extension to the virtual fonts structure: you can use
3356 f.fonts[1] = { 'id' = 38}
3358 to do a backreference to a previously defined font. This saves quite
3361 * There was a bug in the handling of \leaders in the output whereby
3362 it's width was taken to be twice what it should be while writing
3363 to the PDF, fixed now.
3365 * The font inclusion code is cleaned up a bit by Hartmut.
3367 * Some compilation problems were fixed.
3369 * There is (quite a bit of) debugging information printed out when
3370 OTPs are in use, because I am tracking down a bug reported by Idris.
3372 The input of each and every OTP step is shown on the terminal in
3375 [57902][1568][58423][1568][58408][1568][58921]
3377 those are the decimal values of ocp i/o characters. If you don't
3378 need them, don't worry about it.
3380 ==============================================================
3381 Luatex snapshot-20070302 was released 20070302
3382 ==============================================================
3384 * The 'snapshot version' banner is now calculated dynamically
3385 at build time. This aids in figuring out what binary people
3386 are actually running, but it can possibly break the build on
3387 systems that do not have a `date` command.
3389 * The do_vf() function that checks for virtual font existance
3390 is now run immediately after the font definition instead of
3391 being postponed until characters are output.
3393 * The 'define_font' callback interface has changed a little.
3395 retval = function (name,size,fontid)
3397 where fontid is the internal font number of the font that
3398 is currently being defined, and retval can be either a table
3399 (as before) or a different, previously defined fontid. This is
3400 useful if a previous definition can be reused instead of
3401 creating a whole new font structure.
3403 * The internal font data structure has been redone. Glyph index
3404 inside a font is now handled by a sparse array, so that use
3405 of e.g. 0xFB01 (fi-ligature) no longer creates a 64000+ entries
3408 * The internal cache-ing of font metric information is turned
3409 off completely, because it was based on the assumption that
3410 name + size were a unique identifier for a font. This can no
3411 longer be guaranteed.
3413 * word boundary processing now works OK again, thanks to the
3414 introduction of two virtual characters in the font table
3415 definition. Besides the normal numeric entries in the
3416 f.characters table, there can now also be two string keys:
3417 "left_boundary" and "right_boundary". The ligatures and kerns
3418 of the 'left_boundary' character are used for the pre-word
3419 boundary processing, ligatures and kerns between characters
3420 and 'right_boundary' are used for the post-word processing.
3422 * Lua font table references are no longer cached by the
3423 executable ,in order to preserve memory. (the only downside
3424 is that font.fonts[] access is now slower because of the need
3425 to recreate the lua table).
3427 * There are other some small changes to the font table formats.
3428 Please see the manual for details.
3430 * A 'real' font can now still have virtual characters if they
3431 are loaded via lua. Just set the 'commands' section and/or
3432 the 'fonts' array to your liking, and it should work out.
3434 If you have created no 'fonts' array at all, then the default
3435 font (indentifier '1') is the current font, so that you
3436 can create virtual duplicates of already existing characters.
3438 Note: this does not work the other way. There can not be
3439 'real' characters in a virtual font!
3441 * Truetype-based opentype fonts no longer require Acrobat 7
3442 t(hey are now written out as if they are normal truetype).
3444 * A lua init script can now set 'texconfig.formatname' and/or
3445 'texconfig.jobname'. If ther is no file or format specified
3446 on the commandline, then, if, one of those keys is present,
3447 that key will be used instead of simply quitting with an
3450 * Placement of boxes and rules in right-to-left mode is debugged,
3451 and now seems to work ok.
3453 * Virtual font loading is debugged.
3455 * Some memory leaks are resolved
3457 * HZ font expansion should work ok again, but is not tested.
3459 * a few of the warning during opentype loading have been removed
3460 because the problems are rather harmless and turned out to be
3461 triggered by almost every font.
3464 ==============================================================
3465 Luatex snapshot-20070218 was released 20070218
3466 ==============================================================
3468 * The pdftex stuff is now updated to 1.40.3
3469 (and on top of that, it still has those extra patches announced in
3472 * The virtual font parser is debugged and now appears rather stable.
3474 * There is one extra virtual command:
3477 {"slot", 1, 97}, -- place character 97 'a' in local font 1.
3480 This is just a shortcut for {"font",1}, {"char", 97}
3482 * Some small memory leaks have been fixed. Luatex does not leak big
3483 time, but I'd like to get back to valgrind reporting '0 out of 0',
3484 instead of the current 800 bytes or so (that is a slow process).
3486 * You can read a truetype or opentype font from within lua code
3487 using font.read_ttf() or font.read_otf(), respectively.
3489 This feature uses a fair bit of the fontforge code, making the
3490 binary rather a bit larger than before. Just so you know.
3492 Apple (AAT, as well as encoding) support is still largely missing,
3493 and bitmap-only and old Multiple-Master truetype fonts are not
3494 supported at all (and never will be).
3496 The output format is (shadily) documented in the reference manual.
3497 At the moment, it very closely resembles the internal font stucture
3498 that is used by fontforge.
3500 * LuaTeX can now write wide OpenType fonts to the PDF file.
3502 There is no subsetting support yet, and a ToUnicode CMap is also
3503 still missing, but nevertheless it is already somewhat useful. The
3504 rule is very simple: if a font uses code points above 255, then it
3505 is considered to be a `wide' font, and it will be written out as
3506 a Type0 CID-keyed font to the PDF.
3508 Caveat: Getting suitable metrics into LuaTeX can be a bit of problem
3509 right now, because font.read_otf() does not produce anything that
3510 can be fed back into define_font without extra processing. Hans has
3511 some experimental Lua code for ConTeXt (of course :-)) and that is
3512 how I know it works. You can expect a nicer interface soon,
3513 hopefully next week, in the form of a simplistic table conversion
3516 * I have started work on supporting Aleph's bidi typesetting in PDF
3517 mode as well, simple text seems to be largely ok. More complicated
3518 documents will no doubt still show some bugs, but fixing those will
3519 be easy (once they are discovered). Exactly what happens with specials
3520 is not yet investigated.
3522 * Omega's (16-bit) wide virtual fonts now work OK in PDF mode. This
3523 means that many Aleph files can now be run in PDF mode directly.
3524 (the documents that use UTF-8 input encoding)
3527 ==============================================================
3528 Luatex snapshot-20070202 was released 20070202
3529 ==============================================================
3532 * The pdftex stuff is now updated to 1.40.2, and on top of that, it has
3534 - an extra patch from Han The Thanh that adds a primitive to control
3535 the merging of fonts from external pdf images (\pdfreplacefonts),
3536 and a bugfix for virtual font handling.
3538 - an extra patch by Hartmut Henkel that removes a number of malloc()s
3539 and free()s from the calls to the compression library, thereby
3540 making luatex run a bit faster.
3542 * luatex now happily accepts the following low-level syntax:
3544 \font\myfont = <general text> <at specifier>
3546 It feeds the <general text> to either kpathsea or a lua script for
3547 further processing after stripping the braces.
3549 In itself, this is not all that useful, but the reason for this
3550 syntax extension is that it paves the road for a macro package
3551 to do something like this:
3553 \font\myfont = {font="Times New Roman", color="\darkred",
3554 encoding="ec", features="liga", size=10bp}
3556 without having to resort to system-specific quoting mechanisms.
3557 Macro (and other) expansion takes inside the braced argument.
3559 (I am considering adding this extension to \input as well).
3561 * It is now possible to define a font into the font.fonts[]
3562 directly from lua, but becayse use is limited, I am only
3563 mentioning it to be complete.
3566 <number> id = font.define(<table> font)
3568 * There is a (not very reliable yet) virtual font parser accessible
3572 <table> vfdata = font.read_vf(<string> name, <number> size)
3574 The interpreter tries to give a reasonable representation of a
3575 virtual font file (the .vf file). Besides a few simple top-level
3578 designsize -- in scaled points
3580 name -- the file name
3581 checksum -- the vf checksum
3582 header -- the header comment (if any)
3584 it also has a top-level array 'fonts' wherein each item is a mini-
3585 array describing one of te mapped fonts. An example makes this
3588 "fonts" = { {"ptmr8a",655360}, {"psyr", 600000} }
3590 says that the first referenced font (index 1) in this virtual font
3591 is ptrmr8a.tfm loaded at 10pt, and the second is psyr.tfm loaded
3592 at a little over 9pt. These index numbers are used by the character
3593 command definitions that follow.
3595 At top level, there is a 'characters' array, just as for a normal
3596 font, except that each item has only two keys:
3598 "width" -- the tfm width (as stored in the .vf)
3599 "commands" -- an array of virtual font commands for a character.
3601 each of the items in the 'commands' array is itself a tiny hash.
3603 Each of those mini-hashes represents a single character packet
3604 command. Here is a 'commands' entry that contains every possible
3608 {"push"}, -- remember where we are
3609 {"right", 5000}, -- move right 0.08pt
3610 {"font", 1}, -- select the fonts[1] entry
3611 {"setchar", 97}, -- place character 97 'a'
3612 {"pop"}, -- go all the way back
3613 {"down", -200000}, -- move *up* about 3pt
3614 {"special", "pdf: 1 0 0 rg"} -- switch to red color
3615 {"rule", 500000, 20000} -- draw a bar
3616 {'special',"pdf: 0 g"} -- back to black
3620 * But the big news is that you can now define your own virtual fonts
3621 on the fly, by adding a few statements to the table returned to
3622 the 'define_font' callback.
3624 There are a few requirements:
3626 - The table has to have a top-level key 'type', and it's value
3629 The presence of this key with the specific value 'virtual'
3630 will trigger handling of the rest of the special virtual font
3631 fields in the table, but the mere existance of 'type' is
3632 enough to prevent luatex from looking for a virtual font
3635 Therefore, this also works 'in reverse': if you are absolutely
3636 certain that a font is not a virtual font, assigning the value
3637 'base' or 'real' to 'type' will inhibit tex from looking for a
3638 virtual font file, thereby saving you a disk search.
3640 - There must be a top-level 'fonts' array, as explained above.
3641 Any fonts that are not yet known to luatex at that moment,
3642 will be loaded automatically (Warning: do not ever use a font
3643 in 'fonts' with the same name you will return in the table you
3644 are defining right now!).
3646 - Each and every character in the fonts needs to have a 'commands'
3647 key, as explained above.
3649 The main point behind these restrictions is that a font is
3650 *either* a base font *or* a virtual font. It cannot be both
3654 ==============================================================
3655 Luatex snapshot-20070126 was released 20070126
3656 ==============================================================
3659 * Underscores in pascal identifiers are now retained.
3661 This took quite a bit of work. The web2c conversion tools
3662 needed only small adjustments, but most of the existing C
3663 code depended on the removal of the underscores. I had to
3664 go through changing many lines. 99% of all identifiers are
3665 now written the same on the pascal side as on the C side.
3666 This makes writing interface code quite a bit less confusing.
3668 Not everything is completely clean yet, because I did
3669 not want to change the web2c-specific C files. I often
3670 took the other approach and removed the underscores
3671 from the web2c options (like 'parsefirstlinep') in the
3672 change file instead. Ugly, but predictable.
3674 There is about a dozen or so of #defines left, that map
3675 memoryword -> memory_word
3679 * The virtual font parsing and interpreting is now done in C.
3680 (this is because it needs to be interfaced with the lua-based
3683 * I am in the process of merging: the VF stuff; the TFM stuff;
3684 the lua font loading; and the pdftex font backend into one
3685 interface, so there were some smallish changes relating to
3686 that as well. Nothing worth mentioning just yet except that
3687 luatex now will read "ovf" files as well as "vf" files.
3689 * There are a few really small bugfixes for bug reports I received
3690 on this list and by email.
3692 ==============================================================
3693 Luatex snapshot-20070119 was released 20070119
3694 ==============================================================
3696 The largest new bit is the existence of a font.fonts array, that you
3697 can use to query/adjust the internal defined tex fonts. See the manual
3700 Two small new lua extensions are added as well:
3702 * os.setenv() -- to change the environment
3703 * os.exec() -- a non-returning os.execute()
3705 And a bit of cleanup in the commandline processing.
3708 ==============================================================
3709 Luatex snapshot-20070117 was released 20070117
3710 ==============================================================
3712 * the pdftex core is updated to 1.40.1, and web2c to 7.5.6
3714 * the pdftex-specific documentation is removed
3716 * lua lpeg library updated to 0.4
3717 ( http://www.inf.puc-rio.br/~roberto/lpeg.html )
3719 * the C part of the lua md5 library is added to the binary
3720 ( http://www.inf.puc-rio.br/~roberto/md5/md5-5/md5.html )
3722 * --luaonly now puts the script itself at arg[0], and
3723 preceding commandline items in the negative indices
3724 (instead of starting the count at zero).
3725 This new approach is compatible with the standalone lua
3729 ==============================================================
3730 Luatex snapshot-20070107 was released 20070107
3731 ==============================================================
3733 Hot on the heels of 20070105, a new snapshot. It turns out
3734 that using the callback to define a font broke all ligatures.
3735 This snapshot fixes that, and it has a few minor updates to
3736 the manual. Next shapshot will be after the inclusion of
3739 ==============================================================
3740 Luatex snapshot-20070105 was released 20070105
3741 ==============================================================
3743 * the calculations that converted lua strings into tex units
3744 were horrendously wrong, this was discovered by Pawel.
3746 * io.lines() was still using the old, line ending sensitive,
3747 code from the lua core distribution
3749 * The main font memory is allocated as needed^(1) instead of
3750 statically pre-allocated.
3752 * ligatures and kerns are separated completely from each other,
3753 so use of \noligatures no longer inhibits kerning as well
3755 * Metrics can be loaded using a callback: 'define_font'.
3756 The value returned should be a lua table representing a tfm
3759 * there is a new lua table: font. It has one function:
3760 font.read_tfm() that returns a table reprentation of the tfm
3761 contents, for use with the above mentioned callback
3763 * I dropped suppport for "Level 1" OFM files. I would like
3764 to have a try at those extended font files, but I lack
3765 examples (fonts nor documents). I am not even sure such
3766 fonts have ever existed in the 'real world'.
3770 ==============================================================
3771 Luatex snapshot-20061208 was released 20061208
3772 ==============================================================
3774 * There is a new switch: --safer. This disables a number of lua
3775 functions that are more or less dangerous (a detailed list is
3778 * Two longstanding bugs have been fixed: \latelua works once
3779 again (patch by Hartmut) and a bug that caused mysterious crashes
3780 turned out to be a problem inside the paragraph builder
3781 (reconstitution of ligatures)
3783 * Six new string iterators have been added to the string library:
3784 string.characters (one 1-letter string)
3785 string.bytes (one byte)
3786 string.characterpairs (two 1-letter strings)
3787 string.bytepairs (two bytes)
3788 string.utfcharacters (a one-character utf-8 string)
3789 string.utfvalues (a unicode code point number)
3791 * The top 256 values of the unicode range (starting at hex
3792 value "10FF00) are now reserved for byte output. Characters
3793 in that range will be written by luatex after substracting
3794 that offset. The net result is that \char"10FFA9 is written
3795 as byte value hex A9 = decimal 169 = copyright sign in latin1
3797 This trick allows byte-oriented output to \pdfliterals and
3798 \specials, but should be considered very experimental.
3800 * There is a new callback called 'process_input_buffer' that can
3801 be used to mutate the line buffer just before LuaTeX actually
3802 starts looking at it.
3804 * The statistics table now has readable items
3806 statistics.lasterrorstring
3807 that represent TeX's current input id and the last error string
3809 * The show_error_hook callback no longer receives any arguments
3810 * There is a new switch: --safer. This disables a number of lua
3811 functions that are more or less dangerous (a detailed list is
3814 * Two longstanding bugs have been fixed: \latelua works once
3815 again (patch by Hartmut) and a bug that caused mysterious crashes
3816 turned out to be a problem inside the paragraph builder
3817 (reconstitution of ligatures)
3819 * Six new string iterators have been added to the string library:
3820 string.characters (one 1-letter string)
3821 string.bytes (one byte)
3822 string.characterpairs (two 1-letter strings)
3823 string.bytepairs (two bytes)
3824 string.utfcharacters (a one-character utf-8 string)
3825 string.utfvalues (a unicode code point number)
3827 * The top 256 values of the unicode range (starting at hex
3828 value "10FF00) are now reserved for byte output. Characters
3829 in that range will be written by luatex after substracting
3830 that offset. The net result is that \char"10FFA9 is written
3831 as byte value hex A9 = decimal 169 = copyright sign in latin1
3833 This trick allows byte-oriented output to \pdfliterals and
3834 \specials, but should be considered very experimental.
3836 * There is a new callback called 'process_input_buffer' that can
3837 be used to mutate the line buffer just before LuaTeX actually
3838 starts looking at it.
3840 * The statistics table now has readable items
3842 statistics.lasterrorstring
3843 that represent TeX's current input id and the last error string
3845 * The show_error_hook callback no longer receives any arguments
3847 * The statistics table now has readable items
3848 statistics.luabytecodes
3849 statistics.luastates
3850 statistics.luabytecode_bytes
3851 statistics.luastate_bytes
3852 for memory statistics reporting
3855 * The statistics table now has readable items
3856 statistics.luabytecodes
3857 statistics.luastates
3858 statistics.luabytecode_bytes
3859 statistics.luastate_bytes
3860 for memory statistics reporting
3863 ==============================================================
3864 Luatex snapshot-20061204 was released 20061204
3865 ==============================================================
3867 * The LuaTeX interpreter can now be run as a standalone lua script
3868 processor, by using a commandline like this:
3870 luatex --luaonly=luatools.lua
3872 * Luafilesystem (http://www.keplerproject.org/luafilesystem/ ) is
3875 * There are a total of eight new file discovery callbacks:
3884 this enhances the orthogonality of the callback system, nothing
3885 fundamental is changed.
3887 * There is a new callback called 'process_input_buffer' that can
3888 be used to mutate the line buffer just before LuaTeX actually
3889 starts looking at it.
3891 * The 'reader' and 'close' functions from 'open_read_file' now
3892 receive the table they are defined in as a function argument,
3893 that can be used as a per file localized data store.
3895 * Updated the Lua to the latest 5.1.1, with all known bug patches
3896 from the website applied as well
3898 * Runtime autoloading of lua .so files is now off on all platforms.
3900 * The statistics table now has readable items
3902 statistics.linenumber
3903 that represent TeX's current file name and line number
3905 * The support for user-defined type3 font .pgc files and the
3906 associated 'read_miscfonts_file' callback has been removed.
3907 (nobody used it anyway)
3909 * General cleanups to the source tree and build process.
3911 ==============================================================
3912 Luatex snapshot-20061023 was released 20061023
3913 ==============================================================
3915 * there was a missing callback: find_font_file
3916 * program_invocation_name was not set
3917 * buf_size could not be more that 300k
3920 ==============================================================
3921 Luatex snapshot-20061013 was released 20061013
3922 ==============================================================
3924 Last friday I uploaded a new snapshot and today I finally
3925 finished updating the manual to go with it. The changes all
3926 relate to startup, file i/o, and callbacks. The main achievement
3927 is: you can now run luatex without it *ever* initializing kpathsea.
3929 Because I am lazy, I have checked in the pdf of the manual
3930 as well, so that I can say: Please look at
3932 https://foundry.supelec.fr/plugins/scmsvn/viewcvs.php/manual/
3933 /luatexref-t.pdf?root=luatex&rev=148&view=log
3935 for all the details. :-)
3937 ==============================================================
3938 Luatex snapshot-20061002 was released 20061002
3939 ==============================================================
3942 * Some infrastructure changes:
3944 libs/slnunicode-0.9.1/ renamed to libs/slnunicode/
3948 (zziplib is using a different version of autofoo. I know I have
3949 messed up something in the build process, but the bit we need
3950 compiles ok so I've postponed attempting to fix it)
3952 * The callback logic has changed quite a bit.
3954 - all callbacks are now only possible in lua state 0.
3956 - The callback 'input_line' has disappeared, and is replaced by
3957 'open_read_file'. One of the return values of that callback
3958 is a table that defines a 'reader' function for line reading.
3960 See the manual for further information on this.
3962 - There are some new callbacks for the reading of various binary
3963 files. The current ones are:
3965 "read_ocp_file", "read_vf_file", "read_data_file", "read_font_file",
3968 The rest of the file types will follow soon (fonts, enc files, and
3971 - There are also some new callbacks that 'find' a file's pathname:
3973 "find_truetype_file", "find_type1_file", "find_image_file"
3975 here too, more will follow later.
3977 - the functions from io. that were copied to texio have been removed
3978 again. The new callbacks do not pass file pointers around, so
3979 they ere not longer needed
3981 - the 'open_write_file' is temporarily unavailable
3983 * startup.lua is now always loaded into lua state 0
3985 * The luazip library from kepler is linked in, so there the table 'zip'
3986 is accessible from all lua states.
3988 ==============================================================
3989 Luatex snapshot-20060922 was released 20060922
3990 ==============================================================
3992 * The texio table has gained a new function:
3994 tex_file = texio.open(filename)
3996 returns a file handle of a type that luatex can use
3997 internally (the return of io.open is unusable in callbacks
3998 because it will be garbage-collected at a random time)
4001 * In related news, there are two new callbacks you can define:
4003 callback.register('open_read_file', f)
4004 callback.register('open_write_file', f)
4006 where your function should have the following conventions:
4008 function f (number id_number, string asked_name)
4009 return boolean success, string actual_name, tex_file filep
4012 id_number: zero for the log or \input files or TeX's \read
4013 number incremented by one (\read0 becomes 1).
4014 asked_name: the user-supplied filename
4016 success: return false for error, true otherwise.
4018 The remaining two items are only looked at if you return true:
4020 actual_name: the true filename used (with extension!)
4021 filep: a file object opened though texio.open()
4024 * The tex.print function has an extra optional parameter:
4026 tex.print(ctt_id n, strings ...)
4028 This prints the strings using the catcode regime defined by
4029 \catcodetable n (assuming n is valid, see below)
4031 * The new function tex.sprint has the same lua conventions as
4032 tex.print, but behaces slightly different on the tex side:
4034 ** tex does not switch to the 'new_line' state (this implies
4035 that leading spaces are not ignored)
4036 ** no \endlinechars are inserted
4037 ** trailing spaces are not removed from the argument
4039 * Catcode tables are a completely new feature, that allows
4040 you to switch the current catcode regime in one simple
4043 \catcodetable <count>
4045 Switches to the use of a different set of catcodes (table),
4046 that is stored under the number <count>. Such a table has to
4047 be previously created using one of the two command below, or
4048 the number 0 (which is pre-inititialized)
4050 This command obeys normal grouping rules.
4052 \initcatcodetable <count>
4054 creates a new, global, independent catcode table with catcodes
4055 matching the code that are predefined by initex (tex -ini).
4057 This allocation is global
4059 \savecatcodetable <count>
4061 copies the current set of catcodes to a new, global, table
4062 with id number <count>. The definitions in this new table
4063 are all treated as if they were made in the outermost level.
4065 This allocation is global
4067 At the end of each grouping level, items within all existing
4068 catcodetables are restored, regardless of which one is the
4069 currently active table.
4071 Catcode table numbers cannot be larger than 0xFFFFFFF (228-1)
4073 * There is a new lua table: lua. It contains three read-only
4076 lua.id -- the id number of the instance
4077 lua.version -- a luatex version identifier string
4078 lua.startupfile -- the full filename (+path) of startup.lua
4080 and it also contains a read/write array:
4082 lua.bytecode[] -- lua executable bytecode
4084 This array can be used to save and restore lua functions
4085 across lua states. The accepted values are for assignments
4086 are functions and nil. Likewise, the retrieved value is
4087 either a function or nil.
4089 The contents of the lua.bytecode array is stored inside the
4090 format file, so it can also be used to preload lua code.
4093 * The format files are quire a bit smaller than before
4096 ==============================================================
4097 Luatex snapshot-20060915 was released 20060915
4098 ==============================================================
4100 * There is a new TEX primitive: \formatname. It is similar
4101 to \jobname (read-only). In initex, the expansion is empty,
4102 otherwise the expansion is the same as the \jobname from
4105 * the lua "tex" table has been expanded with a few of the 'convert'
4106 codes (read-only). The supported ones at this moment are:
4113 tex.pdfnormaldeviate
4120 This list looks haphazard, but it really is not. These are
4121 all the cases of the 'convert' internal command that do not
4122 require an argument.
4124 * The metatables of the subtables like tex.dimen[] etc. are now
4125 adjustable from lua (not that I recommend doing that;-)).
4127 * On the lua side, there is a new global value: "luaid"
4128 It holds the internal id number of this \directlua instance.
4130 * There is a new lua table, "callback", that has the single function
4131 "callback.register", used to register callbacks. This replaces
4132 the previous concoction (see my message about snapshot 20060901).
4135 callback.register(<callback name>,function (f) ... end)
4137 where the <callback name> is for the moment, either "input_line"
4138 or "show_error_hook".
4140 This function internalizes the callback function in such a way
4141 that you no longer have to worry about \luacallback (which has
4142 been removed), nor does it matter if you redefine a function
4145 The internal testing for callback presence is also quite a bit
4146 faster, thanks to this change. Callback assignments are global
4147 and the "input_line" always takes effect starting on the next
4148 input line to be read from an actual file.
4151 * \detokenizedlua has been removed. It is functionally replaced by
4152 the new function call tex.write("").
4154 Each argument to each call of tex.write () counts as an input
4156 ** all catcodes on that line are either 'space' (for " ") or
4157 'character' for all others.
4158 ** there is no \newlinechar appended.
4160 * The implementation of tex.print() has changed as well:
4162 ** the very last tex.print() line from a \directlua
4163 will no longer have a trailing \newlinechar
4164 (this is very convenient when \directlua is used
4166 ** tex.print() is quite a lot faster than before, and the total amount
4167 of returnable text from a \directlua is now only limited by
4168 available system RAM. However, each separate tex.print ()
4169 argument has to fit in TeX's input buffer.
4171 * The new primitive \luastartup can be set inside the format file
4172 to specify the lua instance number in which a possible runtime
4173 startup.lua script is executed (initex always uses 0)
4175 * There is a new primitive \scantextokens. Differences with
4176 eTeX's \scantokens are:
4178 ** the last line (usually only) from \scantextokens
4179 does not have a \newlinechar
4181 ** \scantextokens never raises an eof error.
4183 This means things like
4186 {\scantextokens{\ifnum1=1 true}\else false\fi}
4188 are legal input (but potentially dangerous!).
4191 local d = tex.dimen["unknowndimen"]
4192 'd' will now become "nil" instead of raising an error
4195 tex.dimen["unknowndimen"] = d
4196 is still (and probably will remain) illegal
4198 ==============================================================
4199 Luatex snapshot-20060908 was released 20060908
4200 ==============================================================
4202 * BIG CHANGE: \directlua now runs \scantokens internally.
4204 There is no longer a need to call scantokens yourself, the
4205 tex.print() output is now fed straight into a pseudo file.
4206 This is quite a bit faster as well as easier to use, but
4207 just in case you want it, the old behaviour is still present,
4213 * The texio library now has its own (partial) set of I/O commands,
4214 so that the standard lua io library is back to the distributed
4215 state (no more patched garbage collector)
4217 Note: This is really a very small change (it should not have any
4218 impact on wellbehaved input files), but I attempt to be complete
4219 in these notes, since there is no official documentation yet.
4222 * There is a new standard library available: kpse
4224 The most important function in that library is find_file:
4226 string = kpse.find_file(string filename
4228 [,boolean mustexist])
4230 both "type" and "mustexist" are optional, so the function
4231 has from one upto three arguments.
4233 "type" is like the '-format' argument of kpsewhich. You can
4234 run 'kpsewich -h' for a list. The default type is "tex".
4236 "mustexist" is like '-must-exist', and the default is false.
4237 If you specify "true" (or a nonzero integer), then the kpse
4238 library will search the disk as well as the ls-R databases
4240 The new library also has three other functions that map
4241 straight to kpsewhich commandline options:
4243 string = kpse.expand_path(string)
4244 string = kpse.expand_var(string)
4245 string = kpse.expand_braces(string)
4247 * There is a second callback possibility:
4249 texio.show_error_hook(string message,
4250 string|number indicator,
4253 This command is run from inside the TeX error function, and the
4254 idea is to allow you to do some extra reporting on top of what
4255 TeX already does (none of the normal actions are removed).
4257 "message" is the formal error message tex has given to the
4258 user (the line after the "! ")
4259 "indicator" is either a filename (when it is a string) or a
4260 location indicator (a number) that can means lots of different
4261 things like a token list id or a \read number.
4262 "lineno" is the current line number
4264 This is an investigative item only, comments are welcome but do
4265 not take the syntax seriously.
4267 The final goal IMO is the total replacement of TeX's error
4268 handling routines, but that needs lots of adjustments
4269 in the web source because TeX deals with errors in a somewhat
4270 haphazard fashion (it needs unification first). The current
4271 hook is only for 'testing the water'.
4273 * It is now possible to use named items in the
4279 subtables, so you can have
4281 tex.count.scratchcounter = 0
4282 local enormous = tex.dimen["maxdimen"]
4284 Luatex looks up the value for you on the fly. You have to use a
4285 valid \countdef (or \dimendef, or \toksdef), anything else will
4288 In a normal TeX file, you don't do \dimen\maxdimen, but the
4289 lua syntax seems to be a bit cleaner to me. The intention is
4290 to evntually also allow \chardefs and macros that expand
4291 into a number (todo)
4294 * The tex table has also been extended with a large list of internal
4295 parameters (partially read/write). It is possible to access
4296 about every primitive that you can use after \the *and* is a
4297 single token. So there is
4299 integer = tex.tracingcommands (\the\tracingcommands)
4300 integer = tex.prevgraf (\the\prevgraf)
4301 string = tex.output (\the\output)
4303 etc. for all of the internal parameters, but not the items
4304 that need extra arguments (like \the\scriptfont )
4306 The subset comprising simple integer and dimension registers
4307 are writable as well as readable (stuff like \tracingcommands
4310 The fact that both lists are still quite limited is a result of
4311 the very different types of things that can occur after \the and
4312 also on the LHS of an assignment. The remaining primitives will
4313 be filled in when there is a real need or implementation becomes
4314 simple, whichever comes first.
4318 ==============================================================
4319 Luatex snapshot-20060901 was released 20060901
4320 ==============================================================
4322 All changes are related to lua this time, and most are quite unstable
4323 / experimental. But first the things that are stabel/fixed bugs:
4325 * A VF loading bug that turned up in some of Hans' fonts
4328 * A small series of bounds checking fixes to \ocplist has been
4329 added to prevent the system from crashing due to array indexes
4330 running out of bounds.
4332 * The Lua file searching paths are now fixed. The search path for lua
4333 script files now contains the following items (tried in order)
4334 1. the local directory:
4336 (for document-specific files)
4337 2. the items from the expansion of kpathsea's $TEXMFSCRIPTS variable,
4338 but only the parts containing 'lua' as a subpath:
4339 $TEXMFSCRIPTS<lua>/?.lua
4340 $TEXMFSCRIPTS<lua>/?/init.lua
4341 (for format-specific files)
4342 3. the $SELFAUTOPARENT sibling directory named 'lib'.
4343 $SELFAUTOPARENT/lib/lua/5.1/?.lua
4344 $SELFAUTOPARENT/lib/lua/5.1/?/init.lua
4345 (for files that are not related to tex)
4347 The search path for dynamic libraries has only
4348 1. the local directory:
4350 (for document-specific files)
4351 2. and the $SELFAUTOPARENT sibling directory named 'lib'.
4352 $SELFAUTOPARENT/lib/lua/5.1/?.so
4354 (of course the extension is .dll on windows, but .dlls do not
4355 work at the moment so it will not do you much good)
4357 * There are two functions available within a new table called
4359 texio.write (luastring)
4360 texio.write_nl (luastring)
4361 both write the luastring to the same location(s) TeX writes
4362 its stuff. So if \batchmode is on, it writes only to the
4363 log, inside a \write, it prints to the current write file,
4366 A read|write interface to TeX's "file selector" will
4369 * At startup, luatex searches for a script named
4371 in the path list I explained above. If such a file exists, it is
4374 This happens right before the first input file needs to be opened
4375 (that is after format loading, but before any \everyjob tokens).
4377 From within the script, you can check the value of
4381 that is the 'format identification' as used by TEX. When the variable
4382 is equal to nil, luatex in in 'initex' mode, otherwise it will be
4383 something like: " (format=plain 2006.9.1)"
4386 Now for the experimental portion: callbacks. Here is what I have done
4389 * The main reason for wanting startup.lua is file (input) re-encoding.
4390 For this purpose, it is now possible to set up a callback for
4393 If you attach a Lua function to
4397 then from the next input line onwards, luatex will run that
4398 function whenever it needs a new input line from a text file.
4400 Your function will receive a file handle as argument, and
4401 should return either a string or nil (with nil signalling that
4402 the end of file has occurred).
4404 The trivial case is simply this:
4409 texio.input_line = reader
4412 Warning: The implementation is not totally finished yet. For the
4413 moment the file handle ("f" in the example) is a normal lua file,
4414 with a simple but important restriction: you cannot alter its value.
4415 You cannot f:close() it, or assign it a different value. luatex
4416 will eventually close the file itself.
4418 The restriction is a side-effect of a synchronisation problem with
4419 the lua garbage collector. Because of this, it also was necessary
4420 to turn off the automatic file closing code for normal lua io
4421 files (In other words: you have to close yourself all the files
4422 you opened yourself, and you should not close any files you did
4425 In the near future, "f" will become a special 'texio' file object
4426 and the needed functionality from the normal io library will be
4427 reimplemented. Along with that change, there will also be a callback
4428 to open (i.e. find) files, and a simple interface to the compiled-in
4429 kpathsea to use within that callback.
4432 ==============================================================
4433 Luatex snapshot-20060825 was released 20060825
4434 ==============================================================
4436 The main change in this snapshot is that it uses far less memory.
4437 luatex -ini on my linux machine went from 326Mb (last week) to
4438 93Mb (now), and "texexec luatex" now ends at 184Mb instead of
4441 This is achieved by two big changes:
4443 * The \mathcode, \delcode, \catcode, \sfcode, \lccode and \uccode
4444 tables are now sparse arrays that are implemented in C. They
4445 are no longer part of the TeX "equivalence table" and because
4446 each had 1.1 million entries with a few memory words each, this
4447 makes a major difference.
4449 See mathcodes.c and textcodes.c if you are interested in the
4450 gory details, but be warned: the code is still extremely
4451 rough and ugly. In particular, the dump and undump routines
4452 are far from optimal, resulting in somewhat larger format files
4453 than before (approx 1.3Mb larger with unicode-letters loaded,
4454 10k without); and the assignments do not show up when using
4455 the etex tracing routines \tracingassigns and \tracingrestores
4456 (code simply not written yet)
4458 * Single-character commands are no longer "special" internally,
4459 they are stored in the hash just like the multiletter csnames.
4462 ==============================================================
4463 Luatex snapshot-20060818 was released 20060818
4464 ==============================================================
4466 The snapshot is up to par with Aleph-RC4 (from texlive devel)
4467 and the latest pdftex beta (even newer than 20060811). However,
4468 there are some differences, to summarize:
4470 * There is no pool file (all strings are embedded)
4472 * -8bit and -translate-file are silently ignored
4474 * There is no mltex nor enctex (conflicts with aleph)
4476 * The tex functionality is always present and enabled
4477 (but see below about TeXXeT), so the asterisk or
4478 -etex switch for initex is not needed
4480 * "plus 1 filllllllll" does not generate any errors from TeX
4482 * TeXXeT (from eTeX) is not present, so the primives
4490 * The experimental pdftex regex match operations are removed,
4491 because that feature does not make much sense when lua is
4492 available so the primitives
4497 * The input translations from Aleph are not implemented, the
4498 16 related primitives are all missing
4504 \noDefaultOutputMode
4507 \DefaultInputTranslation
4508 \noDefaultInputTranslation
4511 \DefaultOutputTranslation
4512 \noDefaultOutputTranslation
4513 \noOutputTranslation
4515 All file IO assumes UTF-8, except that all the low-ascii
4516 controls except TAB, CR en LF are written to the terminal
4517 using ^^ notation (even these are binary in the log file).
4519 * Input characters can use the full range of Unicode,
4520 but it probably only makes sense to use values above
4521 the base plane for \mathcode and \catcode assignments,
4522 since the fonts as well as the hyphenation patterns
4523 are strictly 16-bit still.
4526 \pdfpagewidth and \pagewidth,
4527 \pdfpageheight and \pageheight,
4528 \fontcharwd and \charwd,
4529 \fontcharht and \charht,
4530 \fontchardp and \chardp,
4531 \fontcharic and \charic,
4532 are all aliases of eachother.
4536 clears a marks class completely.
4538 * The experimental pdftex primitives
4543 and provided without the extra 'pdf' prefix, so they are
4551 * I probably forgot to mention some things :-)