mailing-list for TeXmacs Users

[Pierre-Henri Jondot <address@concealed>]

Hi Massimiliano, and everyone,

This looks great, and I’ll test it extensively during the following weeks. 
For the moment, I installed the Cocoa version (only using macos for the time 
being) but I’ll try the Vue version also (or should I focuss on one or the 
other ?)

For the webassembly version, it looks great, and we’re getting close to allow 
those of my students to use their iPad to browse the documents I made 
available to them. Weirdly enough, it seems nothing on the menus has any 
effect (but it works on my macbook) (I tried safari and brave browsers). It 
is possible though to use the left tab to add files and open them. 

The most annoying problem is the scrolling through a document. It seems 
impossible to scroll without an external mouse/trackpad (I suppose it works 
with a magic trackpad connected to the ipad, I couldn't test it yet, as I am 
not home and have not a trackpad nearby, but I could scroll through a 
document on my ipad using continuity with my macbook trackpad)

Many thanks for this,

Pierre-Henri


> Le 19 oct. 2026 à 10:05, Massimiliano Gubinelli <address@concealed> a 
> écrit :
> 
> Hello everyone,
> 
> I'd like to introduce TeXmacs Upsilon, an enhanced and bleeding-edge
> version of GNU TeXmacs with experimental features. For the past few
> weeks I have been collecting several lines of work on TeXmacs in one
> tree, the branch upsilon_texmacs, so that they can be built, used and
> tested together. It is stock TeXmacs (the SVN trunk) with these
> additions merged in. Each one is still kept as its own branch, so it
> can be proposed upstream separately. I would be very grateful if some
> of you could try it and tell me what breaks.
> 
> Inside TeXmacs, Help > TeXmacs Upsilon features gives a tour of
> everything below, with the menus to use and links to the manual.
> 
> WHAT IS IN IT
> 
> Fixes and speed
> 
>  - Many bug fixes not yet upstream, for bugs reported on Savannah and
>    on GitHub: the Scheme bridge, LaTeX import/export, BibTeX, list
>    views, editing modes, keyboard maps, Windows paths, and more.
>  - Incremental typesetting: only the parts of a document that change
>    are typeset again, so typing in long documents is faster. Styles
>    and files are cached until they change on disk.
> 
> Fonts and mathematics
> 
>  - OpenType mathematics: formulas laid out from the MATH table of any
>    OpenType math font, with stretchy delimiters and accents taken from
>    the font. Text fonts get their OpenType features, and families get
>    their weights and variants (Format > Weight).
>  - About two dozen math fonts paired with matching text fonts, most of
>    them shipped, plus a font inspector.
>  - More fonts (DejaVu, Gentium Plus, the Antykwas, Iwona, Kurier, IBM
>    Plex weights...).
>  - A font design page: one tab per part of a document (text,
>    mathematics, sans serif, typewriter, blackboard bold, calligraphic,
>    fraktur) showing samples. You can apply a choice to the document
>    and save it under a name.
> 
> Interfaces
> 
>  - Besides Qt there is a native Cocoa interface for macOS, and Vue, an
>    interface drawn entirely by TeXmacs. Both are drawn on the GPU
>    (Metal on macOS, OpenGL elsewhere), with MuPDF as a fallback.
>  - Light and dark themes, icon bars at the left or at the top,
>    responsive tabs and smooth zoom.
>  - New icon sets: neo-classical (the default), monochrome and Lucide.
> 
> Scheme interpreters
> 
>  - s7 replaces Guile 1.8 by default. It needs nothing installed and
>    starts much faster (the first window appears in about 0.7 s instead
>    of 1.9 s).
>  - An experimental femtolisp backend: a small Scheme that works
>    directly on TeXmacs' byte strings and caches its compiled files. It
>    boots about as fast as s7, is faster on conversions such as the
>    LaTeX export, and works on the desktop and in the browser.
>  - Guile is still available as a build option, and the same Scheme
>    code serves all three.
> 
> Documents and references
> 
>  - Git integration (Version > Git): a side panel, commits, log,
>    branches, tags, stashes, push/pull/clone, comparison with any
>    revision, and structured three-way merges of TeXmacs documents,
>    which also work as a git merge driver.
>  - Zotero citations, read live from the Zotero desktop app: search,
>    key completion, bibliography files kept in sync with Zotero, and
>    group libraries.
>  - CSL bibliography styles (the styles used by Zotero, Mendeley and
>    Pandoc), processed by TeXmacs itself: csl-apa, csl-ieee,
>    csl-chicago-... and any other .csl file you place next to the
>    document.
>  - New converters: Markdown import/export and Word/OpenDocument
>    (.docx/.odt) import/export.
> 
> Program code
> 
>  - Syntax of 22 languages through tree-sitter, for source files, code
>    blocks in documents and session inputs. This gives colours, folds,
>    an outline, structural selection and moves, bracket handling,
>    indentation and comment toggling.
>  - A language server (LSP) client for source files, which open in tabs
>    of their own: diagnostics, completion, hover, signatures,
>    references, renaming, quick fixes, formatting and symbols. The code
>    blocks of a document in the same language are seen by their server
>    as one file, so definitions in one block are known in the next.
> 
> Chatbots
> 
>  - AI sessions inside a document with ChatGPT, Claude, Gemini,
>    Mistral, Ollama, OpenRouter and Albert. Answers are streamed, you
>    can attach files to your questions, costs are shown, and API keys
>    are kept in an encrypted wallet.
> 
> Documentation and tests
> 
>  - Developer documentation inside TeXmacs (Help > Developer
>    documentation): about 400 pages, roughly 250 of them on the
>    internals of the source code.
>  - Many new tests: C++ unit tests, nearly sixty Scheme regression
>    suites, document regressions, and a headless typesetting of the
>    whole manual. All of them run in CI on every platform.
> 
> 
> TEXMACS IN THE BROWSER
> 
> The same source tree also compiles to WebAssembly. You can try it now,
> with nothing to install:
> 
>  https://mgubi.github.io/texmacs/
> 
> What works in the page:
> 
>  - editing and typesetting, all menus and dialogs, a tab per document;
>  - files stored in the browser (upload, drag and drop, zip projects,
>    downloads, backups) and PDF export;
>  - the system clipboard and spell checking;
>  - the Markdown and office converters, the font design page, and
>    program code with tree-sitter;
>  - plug-ins that run inside the page: Python (Pyodide), R (webR), TikZ
>    (TikZJax), Asymptote, JavaScript and the AI sessions.
> 
> It draws with WebGPU in Chromium-based browsers and with WebGL2
> elsewhere. Add ?gpu=0 to the address to draw with MuPDF instead.
> Help > TeXmacs in the browser lists what does not work yet (anything
> that needs to run a program on your computer, such as language servers
> or Git) and the recent changes.
> 
> 
> BUILDS
> 
> All the builds are rebuilt by the CI from the latest upsilon_texmacs
> and published at
> 
>  https://github.com/mgubi/texmacs/releases/tag/upsilon-latest
> 
>  - macOS (Apple silicon and Intel, macOS 13 or later): two DMGs, one
>    for Cocoa and one for Vue, plus a Qt build for Apple silicon (zip).
>    They are signed ad hoc and not notarized, so macOS refuses to open
>    them the first time. Right-click the app and choose Open, or run
> 
>      xattr -dr com.apple.quarantine /Applications/TeXmacs.app
> 
>  - Linux (built on Ubuntu 24.04, x86_64): a tarball with Qt 6 and one
>    with Vue.
>  - Windows (x86_64): a zip with Qt 6 and one with Vue. Unpack it and
>    run TeXmacs-Windows\bin\texmacs.exe (there is no installer).
>  - From source: branch upsilon_texmacs of
>    https://github.com/mgubi/texmacs
>    Run "cd src && ./configure && make" as usual. Pick the interface
>    with --with-gui=qt|cocoa|vue|... and the Scheme with
>    --with-scheme=s7|femtolisp|guile. The README describes each option.
> 
> Warning: this is work in progress. Keep backups of important documents,
> and expect rough edges, especially in the Cocoa and Vue interfaces,
> with femtolisp, and in the browser.
> 
> 
> PLEASE TEST AND REPORT
> 
> Any feedback is welcome, whether it is a crash, a document that renders
> differently from official TeXmacs, a missing feature in one of the
> interfaces, or something that is simply confusing. Please open an issue
> at
> 
>  https://github.com/mgubi/texmacs/issues
> 
> or reply here. When possible, include:
> 
>  - which build you used (OS, interface, and for the browser the commit
>    shown in Help > TeXmacs in the browser);
>  - the steps that trigger the problem, and a small .tm file if the
>    problem depends on the document.
> 
> Thanks for trying it!
> 
> Max (& Claude)
>