Eqnedit64 for Python

Source version: 3.1.3 (review candidate; released version remains 3.1.2).

eqnedit64 packages the same TeX-first equation engine and standalone Windows application maintained in the Radia monorepo. The signed one-file Eqnedit64.exe is the canonical editor and command-line converter and remains available separately from GitHub Releases. It does not require Python.

python -m pip install eqnedit64
eqnedit64

The direct native command-line converter always takes one input and one output: Eqnedit64.exe INPUT OUTPUT. The package's eqnedit64 console command is an optional launcher for the bundled copy of that same EXE, not another CLI and not a pybind11 surface. The input is a UTF-8 TeX file or clipboard; the output is office, slides, clipboard-png, or a .png / .emf file path. The legacy word png remains accepted as a clipboard alias, but a path ending in .png always creates a file.

Eqnedit64.exe equation.tex office
Eqnedit64.exe equation.tex equation.png
Eqnedit64.exe clipboard clipboard-png

After a wheel install, replacing Eqnedit64.exe above with eqnedit64 runs the packaged copy with the same arguments.

The wheel provides:

• eqnedit64.Equation for structural editing, Tab-slot traversal, undo/redo, Backspace, multiline equations, and arbitrary matrix growth;
• tex_to_svg, tex_to_mathml, tex_normalize, palettes, and shortcuts;
• copy_equation() and render_equation() as thin subprocess users of the bundled native CLI;
• the Radia-owned browser editor assets through web_asset();
• the bundled standalone application through the eqnedit64 console command.

Only UTF-8 TeX is a source format. MTEF and .eqn are intentionally not supported. Current wheels target 64-bit Windows and Python 3.10 or newer.

The wheel embeds the signed executable produced for the matching eqnedit64-v3.1.1 GitHub Release; it does not build a second application implementation. The package is BSD 2-Clause licensed. The embedded Eqnedit Math font is a TrueType-outline derivative of Latin Modern Math under the GUST Font License. Its license and derivation manifest are included in the wheel.

3.1.2 PowerPoint colour limitation (UXP-0030/0031)

PowerPoint import drops colour on the shared conditional OMML CF_HTML route in both editions. The user measured all r10 colour variants A–G as not red on 2026-10-08 and approved releasing 3.1.2 with this documented limitation. Colour support remains enabled in the native/Web canvas, SVG, saved TeX, and native EMF/DIB output. This decision does not strip colour from the source or renderer. PowerPoint colour retention is not an acceptance requirement for this release.

User hand tests: H1/H5/H6 EXE OK on ea787664d; H7 EXE canvas red, PowerPoint not red. Web H5/H6 OK on 8361ec916. Hosted CI 37692902458 verified 22/22 primary OMML branches byte-identical on the actual Windows clipboard at ea787664d. This supports the UXP-0031 EXE-test plus bit-gate qualification for the covered corpus; it does not prove every TeX input or every Office/browser environment. Changed payload behaviour requires renewed qualification. The release metadata commit still requires its own CI. Formal publication follows the release gates.

3.1.3 candidate coverage limits

The expanded Office gate distinguishes 36 matched fixtures from three non-covered constructs: native \boxed and \binom omit their structure, and native \cancel emits a bottom bar instead of Web's diagonal strike. These cases do not qualify for Web hand-test exemption. Hosted wire/review and changed-boundary qualification remain pending; 3.1.3 is not released. See PRODUCT_PARITY's fixture matrix. PowerPoint colour loss on the shared OMML route remains a known limitation.