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New on CTAN: pst-spectrum
by CTAN Announcements 15 Apr '26

15 Apr '26

Herbert Voß submitted the pst-spectrum package. Version: 1.0 2026-04-13 License: lppl Summary description: Output of a color spectrum for different color models Announcement text: ---------------------------------------------------------------------- To represent the spectrum of light decomposition, we have several packages at our disposal with PSTricks: pst-spectra, xcolor, and pstricks-add. All use the same source code by Dan Bruton. This package provides an extended visible spectrum. However, it is possible to obtain the representation of the spectrum directly from the data of the »International Commission on Illumination« (CIE), and we have the choice between the data of (CIE 1931) and that of (CIE 1964}). Then we must choose a color space, sRGB, Adobe,etc. ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/pst-spectrum The package’s files themselves can be inspected at https://mirrors.ctan.org/graphics/pstricks/contrib/pst-spectrum/ ------------------------------------------------------------------------ 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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New on CTAN: uvlhighlight
by CTAN Announcements 14 Apr '26

14 Apr '26

José Miguel Horcas submitted the uvlhighlight package. Version: 1.3 2026-04-13 License: lppl1.3c Summary description: Syntax Highlighting for Universal Variability Language Announcement text: ---------------------------------------------------------------------- The uvlhighlight package provides syntax highlighting for the Universal Variability Language (UVL) in LaTeX. It is based on the listings package and supports all UVL keywords. The package includes multiple visual themes (default, Flamapy, UVLS dark mode, and black & white) and provides inline commands for semantic highlighting. It also supports user-defined features’ attributes and the inclusion of external .uvl files. ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/uvlhighlight The package’s files themselves can be inspected at https://mirrors.ctan.org/macros/latex/contrib/uvlhighlight/ ------------------------------------------------------------------------ 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: AutoLaTeX
by CTAN Announcements via ctan-ann 14 Apr '26

14 Apr '26

Stéphane Galland submitted an update to the AutoLaTeX package. Version number: 51.0 License type: lgpl3 Summary description: Automate compilation of large scale LaTeX projects Announcement text: ---------------------------------------------------------------------- Major Changes: * The detection of TeX errors and warnings has been completely overhauled. Previously, the extraction of error and warning messages from the TeX log file was incorrect, often displaying invalid text. All log‑related code is now grouped into a single class, which properly identifies errors and warnings, and cleans up the formatting of warning messages. * The build process has been refactored to be more dynamic. Instead of computing a fixed execution sequence based solely on file timestamps and static dependencies, the new approach builds a sequence of tools without considering timestamps. Each tool in the sequence first determines whether it needs to run based on actual content changes, and then runs only if necessary. This allows the process to adapt to state changes caused by tools themselves. The execution list construction, file generation algorithm, and builder class definitions have all been reworked. Additionally, the build now starts automatically when an image is updated, and a new showbuildprocess command has been added for transparency. A bug affecting auxiliary file names when using bibunits has also been fixed. * Detection of the need to rebuild the document has been improved. The TeX log analyzer now correctly recognises the "Rerun the LaTeX compile" message, and the PDF builder’s rebuild detection has been fixed. These changes complement the build process refactor to ensure that recompilation is triggered only when truly necessary. Other Changes and Bug Fixes: * Internal bugs in the TeX parser have been resolved, including the parsing of macros with both optional and mandatory arguments, as well as an exception inside the citation analyzer for auxiliary files. * The installation script has been adapted to meet CTAN standards, ensuring that the distribution source archive is generated correctly. ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/support/autolatex More information is at https://www.ctan.org/pkg/autolatex ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ 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 via ctan-ann 14 Apr '26

14 Apr '26

Joseph Wright submitted an update to the ltx-talk package. Version number: 0.4.10 2026-04-13 License type: lppl1.3c Summary description: A class for typesetting presentations Announcement text: ---------------------------------------------------------------------- ## [v0.4.10] - 2026-04-13 ### Fixed - Fix typos in header template doc - Typeset footer elements in separate boxes (see issue [\#191](https://github.com/josephwright/ltx-talk/issues/191)) - Apply action spec uniformly to all 'action' aware environments (see issue [\#193](https://github.com/josephwright/ltx-talk/issues/193)) - Update URL for maths fonts (see issue [\#197](https://github.com/josephwright/ltx-talk/issues/197)) - Application of `action-spec` list environments when key is given for entire frame with LaTeX 2026-06-01 (see issue [\#198](https://github.com/josephwright/ltx-talk/issues/198)) ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/ltx-talk More information is at https://www.ctan.org/pkg/ltx-talk ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ 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 via ctan-ann 14 Apr '26

14 Apr '26

Cédric Pierquet submitted an update to the tkz-grapheur package. Version number: 0.30f 2026-04-12 License type: lppl1.3c Summary description: A LaTeX package with tools for graph plotting (and TikZ) Announcement text: ---------------------------------------------------------------------- Added statistical chart commands: bar charts, histograms, box-and-whisker plots, and experimental pie/donut charts. ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/graphics/pgf/contrib/tkz-grapheur More information is at https://www.ctan.org/pkg/tkz-grapheur ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ 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: expltools
by CTAN Announcements 14 Apr '26

14 Apr '26

Vít Starý Novotný submitted an update to the expltools package. Version: 2026-04-13 License: lppl1.3c gpl2+ Summary description: Development tools for expl3 programmers Announcement text: ---------------------------------------------------------------------- ## expltools 2026-04-13 ### explcheck v0.19.2 #### Fixes This version of explcheck has fixed the following problems: - Recognize `\prop_new_linked:N` as a variable declaration statement and `\prop_const_from_keyval:Nn`, `\prop_const_linked_from_keyval:Nn`, `\prop_set_from_keyval:Nn`, and `\prop_gset_from_keyval:Nn` as constant and variable definition statements. (reported by @muzimuzhi in #196, fixed in #198) More generally, this change also adds support for constant definitions in the form `\⟨type⟩_const_from_⟨base_type⟩:*`. This improves [code coverage][] by 37,759 expl3 tokens (~0.004% of all expl3 tokens) on TeX Live 2026. - Correctly differentiate between direct and indirect variable and constant definitions in the form `\⟨type⟩_(set|gset|const)_from_⟨base_type⟩:*`. (#198) - Only report issues E504 (Function variant for an undefined function), E506 (Indirect function definition from an undefined function), and W507 (Setting a function before definition) for top-level reachable segments. (reported by @muzimuzhi in #195, fixed in #198) - Do not report issue E505 (Calling an undefined function) for indirect definitions that resolve to well-known control sequence names. (reported by @muzimuzhi in #197, fixed in #198) [code coverage]: https://witiko.github.io/Expl3-Linter-11/#code-coverage #### Continuous integration This version of explcheck has made the following changes to our continuous integration: - Update the `zauguin/install-texlive` action to v4.3. (484989a) - Retry `tlmgr install` and `update`. (#198) ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/expltools The package’s files themselves can be inspected at https://mirrors.ctan.org/support/expltools/ ---------------------------------------------------------------------- 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: beamertheme-gotham
by CTAN Announcements 14 Apr '26

14 Apr '26

Romain NOËL submitted an update to the beamertheme-gotham package. Version: 1.2.5.a 2026-04-02 License: lppl1.3c cc-by-sa-4 Summary description: A modern, minimal-ish, versatile and extendable yet robust theme for Beamer Announcement text: ---------------------------------------------------------------------- # [Gotham](https://gitlab.com/RomainNOEL/beamertheme-gotham) announcement The `Gotham` package is a modern, minimal-ish, versatile, `LaTeX(3)` and extendable theme for your `Beamer` presentations. `Gotham` tries to bring higher flexibility thanks to `LaTeX3` implementation on top of the good-looking `Metropolis` theme. ## Version: 1.2.5.a Date: 2026-04-02 ### News - add lengths `\gothamDividedPicTop` `\gothamDividedPicBottomIncr` and `\gothamDividedPicTextWidth` to control the dimensions of the trapezoid on `gotham divided` titlepage style. ### Fixes - remove the duplicated author line on `gotham divided` titlepage style [[issue #13](https://gitlab.com/RomainNOEL/beamertheme-gotham/-/issues/13)] - adapt patch for fonts/ `part`, `section`, `subsection` and `subsubsection` and there `sectionintoc` ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/beamertheme-gotham The package’s files themselves can be inspected at https://mirrors.ctan.org/macros/latex/contrib/beamer-contrib/themes/beamert… ------------------------------------------------------------------------ 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: The Comprehensive LaTeX Symbol List
by CTAN Announcements 14 Apr '26

14 Apr '26

Scott Pakin submitted an update to the The Comprehensive LaTeX Symbol List package. Version: 16.0 License: lppl1.3c Summary description: Symbols accessible from LaTeX Announcement text: -------------------------------------------------------------------------------- The Comprehensive LaTeX Symbol List is a document that organizes over 25000 symbols accessible from LaTeX by topic and package. The aim is to make it easy to find symbols and learn how to incorporate them into a LaTeX document. An index further helps locate symbols of interest. Much has changed since the last release of the Comprehensive LaTeX Symbol List over two years ago. Most notably, the list presents thousands of new symbols from a handful of additional packages. Smaller improvements include refactoring a few tables into more meaningful pieces, updating a few tables to cover recently added or renamed symbols, moving brand icons and logos into their own chapter, and making numerous small improvements to the index to better categorize the symbols appearing in the document. The accompanying SYMLIST text file now uses two columns to present a mapping from user-visible control sequences to the document's internal representation. While not visible to the reader of the Comprehensive LaTeX Symbol List, compilation has been sped up immensely by leveraging the Ninja build system. The document builds with LuaLaTeX whereas previous versions required pdfLaTeX. In fact, the companion Raw Font Tables document now requires LuaLaTeX, which it exploits to show font tables for OpenType and TrueType fonts that define more than 256 characters. -------------------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/info/symbols/comprehensive More information is at https://ctan.org/pkg/comprehensive -------------------------------------------------------------------------------- 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: fiziko
by CTAN Announcements 13 Apr '26

13 Apr '26

Sergey Slyusarev submitted an update to the fiziko package. Version: 0.2.1 2026-04-11 License: gpl3+ cc-by-sa-4 Summary description: A MetaPost library for physics textbook illustrations Announcement text: ---------------------------------------------------------------------- This version of the `fiziko` MetaPost library adds support for inverted shading, which is useful for white-on-black illustrations. It also includes several bugfixes and minor optimizations. ---------------------------------------------------------------------- The package’s Catalogue entry can be viewed at https://ctan.org/pkg/fiziko The package’s files themselves can be inspected at https://mirrors.ctan.org/graphics/metapost/contrib/macros/fiziko/ ------------------------------------------------------------------------ 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: tagpdf
by CTAN Announcements via ctan-ann 13 Apr '26

13 Apr '26

The LaTeX Project Team submitted an update to the tagpdf package. Version number: 1.0a 2026-04-11 License type: lppl1.3c Summary description: Code for PDF tagging using pdfLaTeX and LuaLaTeX Announcement text: ---------------------------------------------------------------------- ## [2026-04-11] Version 1.0a ### Changed - deprecated the command `\tagtool`/`\tag_tool:n` - code clean up in tagpdf-user (e.g. removed old para-socket plug definitions that have been move to lttagging.) ---------------------------------------------------------------------- This package is located at https://mirrors.ctan.org/macros/latex/contrib/tagpdf More information is at https://www.ctan.org/pkg/tagpdf ------------------------------------------------------------------------ Thanks for the upload. For the CTAN Team Erik Braun ------------------------------------------------------------------------ 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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