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CTAN update: expltools
by CTAN Announcements 05 May '26

05 May '26

Vít Starý Novotný submitted an update to the expltools package. Version: 2026-05-03 License: lppl1.3c gpl2+ Summary description: Development tools for expl3 programmers Announcement text: -------------------------------------------------------------------------------- ## expltools 2026-05-03 ### explcheck v0.20.0 #### New features This version of explcheck has implemented the following new features: - Add more support for flow analysis. (#188) This adds support for the following issues from the document titled [_Warnings and errors for the expl3 analysis tool_][warnings-and-errors]: 1. E428 (Unexpandable or restricted-expandable boolean expression) 1. W429 (Defined an unexpandable function as unprotected) 2. W502 (Unused private function) 3. W503 (Unused private function variant) Out of these issues, warning W429 is particularly pervasive, being reported for 573 package files in TeX Live 2025. - In `explcheck-latex3.lua`, add `definitions["function"]` and `definitions.variable` properties with LPEG parsers that accept LaTeX3 standard-library function and variable names, respectively, and capture their properties, such as expandability and the date when they were added or most recently updated. (#201, co-authored by @josephwright in latex3/latex3#1885 and latex3/latex3#1886) For example, `lpeg.match(definitions["function"], "msg_expandable_error:nn")`, where `definitions = require("explcheck-latex3").definitions`, returns the Lua table `{ EXP = "full", added = "2015-08-06" }`. These parsers are generated by `generate-explcheck-latex3.lua` from a new third-party submodule at `third-party/latex3`, which points to a reasonably recent version of the LaTeX3 development repository. At commit latex3/latex3@ff6927ae8, the parsers recognize 4,850 LaTeX3 standard-library functions and 339 variables. - Support multiple user config files being specified in the command-line option `--config-file` and the corresponding Lua option `config_file`. (discussed with @muzimuzhi in #203, added in #201) - Add Lua option `defined_csnames` that specifies which control sequences should always be assumed to be defined. (discussed with @muzimuzhi and @alceu-frigeri in #206, added in #201) This option provides a more fine-grained alternative to the earlier `imported_prefixes`. For example, suppose the control sequences `\module_foo:` and `\module_bar:` are imported and should always be considered defined. A coarse-grained way to express this is: ``` toml [defaults] imported_prefixes = ["module"] ``` However, this also suppresses warnings and errors for all control sequence names matching `\module_*`, as well as message names matching `module/*`, which may be undesirable. Using `defined_csnames`, the same intent can be expressed more precisely: ``` toml [defaults] defined_csnames = ["module_foo:", "module_bar:"] ``` This way, only warnings and errors related to the listed control sequence names are suppressed. - Add Lua option `latex3_definitions_max_added_date`, which limits how recent LaTeX3 standard-library function and variable definitions are considered during analysis. (#201) This affects issues E428 and E508 (Unexpandable or restricted-expandable boolean expression) and W429 and W512 (Defined an unexpandable function as unprotected), as well as any issues that are only reported for user-defined functions and variables, not for LaTeX3 standard-library ones. For example, your config file `.explcheckrc` might look as follows if you want to only consider deprecations, prefixes, and definitions from TeX Live 2025 and earlier: ``` toml [defaults] l3obsolete_max_deprecated_date = "2025-09-29" l3prefixes_max_first_registered_date = "2025-12-02" latex3_definitions_max_added_date = "2025-07-08" ``` These dates can be obtained by running `generate-explcheck-latex3.lua` with the Git submodule `third-party/latex3` checked out at a commit corresponding to TeX Live 2025. One reasonable approximation is the Git tag `2026-01-19`, since `/usr/local/texlive/2025/texmf-dist/tex/latex/l3kernel/expl3-code.tex` in the Docker image `texlive/texlive:TL2025-historic` contains `\def\ExplFileDate{2026-01-19}`. The script then produces output such as: ``` LPEG parsers and other information extracted from LaTeX3 data files. Generated on 2026-04-30 from the following files: - "l3obsolete.txt" with the latest obsolete entry from 2025-09-29: `\l_keys_choice_tl` - "l3prefixes.csv" with the latest registered prefix from 2025-12-02: "asmejour" - 85 "l3*.dtx" files with 4,753 function and 340 variable definitions: - Latest added function or variable from 2025-07-08: `\tl_retokenize:n` - Latest updated function or variable from 2025-09-29: `\l_keys_choice_int` ``` #### Warnings and errors This version of explcheck has made the following changes to the document titled [_Warnings and errors for the expl3 analysis tool_][warnings-and-errors]: - Remove planned issues E509 (Expanding an unexpandable function) and E510 (Fully-expanding a restricted-expandable function), since none of these constitute an error: the functions simply remain unexpanded. (#201) - Plan for weaker versions of the issues E508 (Unexpandable or restricted-expandable boolean expression) and W512 (Defined an unexpandable function as unprotected) in semantic analysis under the identifiers E428 and W429, respectively, and the same names. (#201) - Plan for further analysis of integer expressions in Section "Caveats". (#201) #### Continuous integration This version of explcheck has made the following changes to our continuous integration: - Bump `softprops/action-gh-release` from 2 to 3. (contributed by @dependabot in #199) - Check that third-party submodules are up-to-date. (#201) [warnings-and-errors]: https://github.com/witiko/expltools/releases/download/latest/warnings-and-e… -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/support/expltools More information is at https://ctan.org/pkg/expltools -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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CTAN update: pgf-PeriodicTable
by CTAN Announcements 05 May '26

05 May '26

Hugo Gomes submitted an update to the pgf-PeriodicTable package. Version: 2.1.6 2026-05-03 License: lppl1.3 Summary description: Create custom periodic tables of elements Announcement text: -------------------------------------------------------------------------------- *** v2.1.6 (03/05/2026) *** Small bug fixes: - the font selection in eDist is now within a group - alignment for unavailable values '---' is now correctly centered vertically - fixed a problem that occurs when changing the Z position (with \pgfPTbuildcell) - fixed the resizing of boxes for some numeric values Interaction with other packages (see pgfPT manual for more information): - babel-spanish - graphicx (\resizebox) & preview - extdash New translations: - Russian translation provided by Konstantin Nikiforov - Ukrainian translation provided by Nikita Khveshchuk - Slovenian translation provided by Domen Vaupotic New loading option: - hyperref New keys: - legend xshift - legend yshift - legend acronyms at right - radio symbol - radio font - radio font color - Z links (available with the 'hyperref' loading option) - Z links color (available with the 'hyperref' loading option) - Z links outline width (available with the 'hyperref' loading option) Updated keys: - group numbers, now supports a list of user labels to display group numbers - ls, now supports a starred version of the available flags - fig*, txt*, fig+txt* and txt+fig* - which omits the structure figure in the extra legend that describes the structures' abbreviations New libraries: 'fittowidth': fits the Periodic Table to the text's width - \pgfPTfittowidth[font size] - \pgfPTendfittowidth 'override': user can override the default acronyms or the element names: - \pgfPToverrideacros[language flag]{override list} - \pgfPTrestoreacros[language flag]{override list} - \pgfPToverridenames[language flag]{override list} - \pgfPTrestorenames[language flag]{override list} Fixed some typos in manual. -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/graphics/pgf/contrib/pgf-periodictable More information is at https://ctan.org/pkg/pgf-periodictable -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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CTAN update: latexindent
by CTAN Announcements 05 May '26

05 May '26

Chris Hughes submitted an update to the latexindent package. Version: 4.0.1 2026-05-04 License: gpl3 Summary description: Indent a LaTeX document, highlighting the programming structure Announcement text: ---------------------------------------------------------------------- blank line poly-switch bug fix , full details at https://github.com/cmhughes/latexindent.pl/releases/tag/V4.0.1 ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/latexindent The package’s files themselves can be inspected at https://mirrors.ctan.org/support/latexindent/ ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Petra Rübe-Pugliese ------------------------------------------------------------------------ CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: babel
by CTAN Announcements 04 May '26

04 May '26

Javier Bezos López submitted an update to the babel package. Version: 26.7 2026-05-03 License: lppl1.3 Summary description: Multilingual support for LaTeX, LuaLaTeX, XeLaTeX, and Plain TeX Announcement text: -------------------------------------------------------------------------------- Changes in version 26.7 are described in: https://latex3.github.io/babel/news/whats-new-in-babel-26.7.html Here is a summary: A new file 'cyrl2uni.def' maps the Cyrillic LICR to the corresponding Unicode characters with the TU encoding. It can be used without babel. -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/required/babel/base More information is at https://ctan.org/pkg/babel -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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CTAN update: gbt7714
by CTAN Announcements 04 May '26

04 May '26

Zeping Lee submitted an update to the gbt7714 package. Version: 2.2.0 2026-05-03 License: lppl1.3c Summary description: A BibTeX implementation of China National Standard GB/T 7714 Announcement text: ---------------------------------------------------------------------- ## [2.2.0] - 2026-05-03 ### Added - Add the 2025 edition of the National Standard styles: `gbt7714-2025-numeric` and `gbt7714-2025-authoryear`. - Add a series of options to control the formatting of the `.bbl` bibliography generated by BibTeX. ### Changed - Changed the suffixes of the `.bst` style names to `-numeric` and `-authoryear` to align with the naming conventions of other Bib(La)TeX styles. ### Deprecated - The `.bst` style names with the suffixes `-numerical` and `-author-year` have been deprecated. ### Fixed - Fixed extraneous whitespace following `\citeauthor` in superscript mode ([#120](https://github.com/zepinglee/gbt7714-bibtex-style/issues/120)). ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/gbt7714 The package’s files themselves can be inspected at https://mirrors.ctan.org/biblio/bibtex/contrib/gbt7714/ ---------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Vincent Goulet ---------------------------------------------------------------------- CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs

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CTAN update: lua-list-hyphen
by CTAN Announcements 04 May '26

04 May '26

Alan J. Cain submitted an update to the lua-list-hyphen package. Version: 0.3.10 2026-05-02 License: lppl1.3c Summary description: Per-language listing of hyphenated words for LuaLaTeX Announcement text: -------------------------------------------------------------------------------- New feature: optionally list user-specified amount of context along with each hyphenation Efficiency and documentation improvements, minor fixes -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/luatex/latex/lua-list-hyphen More information is at https://ctan.org/pkg/lua-list-hyphen -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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New on CTAN: tensorstyles
by CTAN Announcements 02 May '26

02 May '26

Romain NOËL submitted the tensorstyles package. Version: 1.0.1.4 2026-04-28 License: lppl1.3c Summary description: A package separating the content of tensors from their forms Announcement text: -------------------------------------------------------------------------------- # [tensorstyles](https://gitlab.com/RomainNOEL/tensorstyles) announcement This package let you display your tensors according to their order in a generic way. This let you choose and change options of display according to the context and the convention you want to adopt. ## Version: 1.0.1.4 Date: 2026-04-28 ### News - Initial version - Dirac, Einstein, arrows, bold, underline presets. -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/tensorstyles More information is at https://ctan.org/pkg/tensorstyles -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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New on CTAN: mp-gears
by CTAN Announcements 02 May '26

02 May '26

Maxime Chupin submitted the mp-gears package. Version: 0.1 2026-04-28 License: lppl1.3c Summary description: Draw systems of intermeshing gears with MetaPost Announcement text: -------------------------------------------------------------------------------- This package helps to draw systems of intermeshing gears with METAPOST. This package allows users to model various gears/rack and gear/rack systems (and even spirographs). Because with METAPOST, we do not need to declare numeric variable, with mp-gears, we define parameters (in table) associated to un numeric identifier and then we manipulate the gear object with this numeric identifier. This package is in beta version—do not hesitate to report bugs, as well as requests for improvement -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/graphics/metapost/contrib/macros/mp-gears More information is at https://ctan.org/pkg/mp-gears -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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CTAN update: ltx-talk
by CTAN Announcements 02 May '26

02 May '26

Joseph Wright submitted an update to the ltx-talk package. Version: 0.5.0 2026-04-30 License: lppl1.3c Summary description: A class for typesetting presentations Announcement text: -------------------------------------------------------------------------------- ## [v0.5.0] - 2026-04-30 ### Added - `\reuseframe` (see issue [\#190](https://github.com/josephwright/ltx-talk/issues/190)) ### Changed - Support `*` notation for (sub)sections (omitting from TOC) - Support for keyval optional argument for (sub)sections - Use after-item hook when available ### Fixed - Only show current subsection if toc used in subsection (see issue [\#203](https://github.com/josephwright/ltx-talk/issues/203)) - Exclusion of modes when overlay spec is 'mixed' (see issue [\#206](https://github.com/josephwright/ltx-talk/issues/206)) - Define handling of multiple action specifications (see issue [\#208](https://github.com/josephwright/ltx-talk/issues/208)) -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/ltx-talk More information is at https://ctan.org/pkg/ltx-talk -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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CTAN update: tkz-grapheur
by CTAN Announcements 01 May '26

01 May '26

Cédric Pierquet submitted an update to the tkz-grapheur package. Version: 0.31a 2026-04-29 License: lppl1.3c Summary description: A LaTeX package with tools for graph plotting (and TikZ) Announcement text: -------------------------------------------------------------------------------- New: tkz-grapheur-altversion module: normalized coordinate system for large data values (years, populations...) Fix: \InegaliteLineaire incorrect shading for non-symmetric windows -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/graphics/pgf/contrib/tkz-grapheur More information is at https://ctan.org/pkg/tkz-grapheur -------------------------------------------------------------------------------- Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

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