September 2025 - dev-luatex

scan_keywordcs typo
by Max Chernoff 23 Sep '25

23 Sep '25

Hi Luigi, §10.6.1 of the LuaTeX manual mentions a function called "scan_keywordcs", but this should actually be "scan_keyword_cs". This was reported by Yiannis Lazarides in the TeX.SE chat. Thanks, -- Max diff --git a/manual/luatex-tex.tex b/manual/luatex-tex.tex index f32ca202f..ea59e3331 100644 --- a/manual/luatex-tex.tex +++ b/manual/luatex-tex.tex @@ -2093,7 +2093,7 @@ what you're doing (or more precise: what \TEX\ is doing with input). \topicindex{tokens} \libindex{scan_keyword} -\libindex{scan_keywordcs} +\libindex{scan_keyword_cs} \libindex{scan_int} \libindex{scan_real} \libindex{scan_float} @@ -2122,7 +2122,7 @@ most intriguing. \NC \type{scan_keyword} \NC string \NC returns true if the given keyword is gobbled; as with the regular \TEX\ keyword scanner this is case insensitive (and \ASCII\ based) \NC \NR -\NC \type{scan_keywordcs} \NC string \NC returns true if the given keyword is gobbled; this variant +\NC \type{scan_keyword_cs}\NC string \NC returns true if the given keyword is gobbled; this variant is case sensitive and also suitable for \UTF8 \NC \NR \NC \type{scan_int} \NC \NC returns an integer \NC \NR \NC \type{scan_real} \NC \NC returns a number from e.g.\ \type {1}, \type {1.1}, \type {.1} with optional collapsed signs \NC \NR

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Primitive image lookup fails if image is in --output-directory, but file lookup and Lua img fns succeed with luatex/luahbtex from tl2023 onwards
by reescf＠gmail.com 14 Sep '25

14 Sep '25

> ref. https://github.com/latex3/latex2e/issues/1804 > > LuaTeX handles images in --output-directory differently depending on whether the Lua functions or the TeX interface is used. Essentially, with > > mkdir -p tex-aux > cp $(kpsewhich example-image-a.pdf) tex-aux/example-delwedd-a.pdf > cp $(kpsewhich --var-value TEXMFDIST)/tex/context/sample/common/cow-black.mps tex-aux/moo.mps > > then > > \directlua{ > img.write = { filename = "example-delwedd-a.pdf" } > } > \bye > > works with --output-directory=tex-aux, whereas > > \saveimageresource{example-delwedd-a.pdf} > \useimageresource\lastsavedimageresourceindex > \bye > > does not. > > I can't reproduce the discrepancy with LuaTeX from TL 2022, but I can from TL 2023 and also with LuaTeX dev TL2026. The error does not occur if pdfTeX is used. > > In LuaLaTeX, this causes fatal errors as LuaHBTeX finds the file when \includegraphics checks, but cannot find the image when \includegraphics tries to use it. > > Logs and details in the GitHub issue linked above.

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LuaLaTeX options
by Erik Nijenhuis 04 Sep '25

04 Sep '25

Hi, I've setup a command line utility which I use for some internal projects. I wondered if the following options can be implemented in LuaTeX's texconfig table: * --lang= * --pdfversion= * --pdfstandard= * --tagging * --uncompress These options are specific for the setup macro \DocumentMetadata. However, for now I have it working, I guess... A detailed explanation and demo can be found at: https://github.com/Xerdi/la-lua-opts I think it would be better for testing purposes if those settings can be set from the command line. What do you think? Best, Erik

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Fix documentation for field names of mplib.stats
by Josef Friedrich 02 Sep '25

02 Sep '25

Dear Luigi! The attached patch corrects the documentation for some field names (mplib.stats). see: https://gitlab.lisn.upsaclay.fr/texlive/luatex/-/blob/4c23aaf64ecfe23ae4132… diff --git a/manual/luatex-graphics.tex b/manual/luatex-graphics.tex index 6b7f0679d..54eed1757 100644 --- a/manual/luatex-graphics.tex +++ b/manual/luatex-graphics.tex @@ -474,10 +474,10 @@ object classes: \starttabulate[|l|l|p|] \DB field \BC type \BC explanation \NC \NR \TB -\NC \type{memory} \NC number \NC memory size \NC \NR -\NC \type{hash} \NC number \NC hash size\NC \NR -\NC \type{params} \NC number \NC simultaneous macro parameters\NC \NR -\NC \type{open} \NC number \NC input file nesting levels\NC \NR +\NC \type{main_memory} \NC number \NC memory size \NC \NR +\NC \type{hash_size} \NC number \NC hash size\NC \NR +\NC \type{param_size} \NC number \NC simultaneous macro parameters\NC \NR +\NC \type{max_in_open} \NC number \NC input file nesting levels\NC \NR \LL \stoptabulate Josef

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