From 62237fea88cef75a29a7928e21827a890d901298 Mon Sep 17 00:00:00 2001 From: Benjamin Mako Hill Date: Thu, 13 Aug 2026 16:41:55 -0700 Subject: [PATCH] Load unicode-math so formulas carry Unicode mappings The Computer Modern math fonts have no ToUnicode entries, which failed ISO 14289-2 clause 8.4.5.8 on six checks and left every formula opaque to assistive software. Switching to an OpenType math font changes the rendering of math only slightly. Co-Authored-By: Claude Opus 5 (1M context) --- slides_template/example.tex | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/slides_template/example.tex b/slides_template/example.tex index e55cdfd..325b48f 100644 --- a/slides_template/example.tex +++ b/slides_template/example.tex @@ -8,6 +8,10 @@ \usetheme{metropolis} \usepackage{appendixnumberbeamer} +% math needs an OpenType math font so that every glyph carries a Unicode +% mapping; the Computer Modern math fonts have no ToUnicode entries +\usepackage{unicode-math} + \usepackage{tagpdf} \tagpdfsetup{activate-all}