August 2022 - dev-luatex

Luatex 1.12.0 announcement.
by luigi scarso 26 May '23

26 May '23

============================================================== LuaTeX 1.12.0 2020-03-15 ============================================================== This is the release for TeX live 2020. --shell-restricted now forbids loading of dso (dll/so object) Scaled virtual font Aadditional primitives \eTeXglue[stretch|shrink]order for querying order the etex way. Extra features runtoks tex.getmodenames() (as these can differ per engine/version) Permit nested runtoks in more complex situations of nesting (HH) More accurate and correct test for tex.[set|get]math Minor clean-up and bugs fixed -- luigi

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Fix for pdf_literal Lua string / token list conversions
by Michal Vlasák 06 May '23

06 May '23

Hello, take this plain LuaTeX example: \setbox0=\hbox{\pdfextension literal{0 g}} % 1) \directlua{ local literal = tex.getbox(0).head texio.write_nl("log", "literal.data="..literal.data) } \showbox0 % 2) \directlua{ local literal = tex.getbox(0).head literal.data = "test" literal.token = "toks" texio.write_nl("log", "literal.token="..(literal.token or "nil")) } \showbox0 % 3) patch test \directlua{ tex.set("everyjob", "asd") texio.write_nl("log", tex.get("everyjob")) } \bye Expected log output (abridged): 1) literal.data=0 g .\pdfliteral origin{0 g} 2) literal.token=toks .\pdfliteral origin{toks} Actual output: 1) literal.data=data .\pdfliteral origin{0 g} 2) literal.token=characters .\pdfliteral origin <lua data reference 153> In the first case the Lua accessor returns a value which happens to be on top of the stack (the key "data" itself). In the second case an index into TeX memory is misinterpreted as a Lua registry index, so the returned data is essentially garbage. Patch for both issues is attached. I also extended `tokenlist_from_lua` (which is what `nodelib_gettoks` is defined as) to allow an index argument. The previous version used the value on top of the stack, which probably worked for every use currently in LuaTeX, but seemed rather dangerous and subtle. The patch is from git, though it can be applied normally with patch -Np1 < pdf_literal.patch Kind regards, Michal Vlasák

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\Uchar errors with "FFFD
by Ulrike Fischer 16 Aug '22

16 Aug '22

\Uchar"FFFD \bye errors with ! String contains an invalid utf-8 sequence. l.93 \Uchar"FFFD (^^^^fffd works) -- Ulrike Fischer http://www.troubleshooting-tex.de/

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Fwd: Importing .tex files using \directlua to navigate files and folders
by Hans Hagen 11 Aug '22

11 Aug '22

-------- Forwarded Message -------- Subject: Re: [Dev-luatex] Importing .tex files using \directlua to navigate files and folders Date: Fri, 12 Aug 2022 09:44:24 +0200 From: Hans Hagen <j.hagen(a)xs4all.nl> To: Taco Hoekwater <taco(a)bittext.nl> On 8/12/2022 9:30 AM, Taco Hoekwater wrote: > > >> On 11 Aug 2022, at 14:08, paolo de luca <teugon(a)gmail.com> wrote: >> >> Hi all, >> >> I've been trying to import all tex files and inside a given folder, the issue I'm facing is that my lua call is not able to navigate folders: it only works for files. >> It's worth mentioning that compilation successfully completes as the document is created, but I have no errors explaining me why it's not working as intended. >> I've also opened a question on tex.stackexchange. >> >> would you mind having a look at it ? >> >> https://tex.stackexchange.com/questions/653499/understanding-implicit-error… > > > See comment on SX. Don't 'return' the nested call, and it works just fine. > > function inputAll(dir) > for content in lfs.dir(dir) do > if ("." ~= content) and (".." ~= content) then > fullpath = dir .."/".. content > contentType = lfs.attributes(fullpath, "mode") > if isTexFile(content, contentType) then > tex.sprint(" > \\ > input{" .. fullpath .. "}") > elseif ("directory" == contentType) then > -- return > inputAll(fullpath) > end > end > end > end yes, the return is quitter, but even then one can run into some nested directory handle issue especially when one does things inside that loop on one of the directories (maybe the \input results in new files there or files get deleted and or ..) and one wants to have a predictable sorted list i assume so i tend to collect first Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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Importing .tex files using \directlua to navigate files and folders
by paolo de luca 11 Aug '22

11 Aug '22

Hi all, I've been trying to import all tex files and inside a given folder, the issue I'm facing is that my lua call is not able to navigate folders: it only works for files. It's worth mentioning that compilation successfully completes as the document is created, but I have no errors explaining me why it's not working as intended. I've also opened a question on tex.stackexchange. would you mind having a look at it ? https://tex.stackexchange.com/questions/653499/understanding-implicit-error… Thanks in advance for your time

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