From 427dcbfa372574f69b85bf3c873195d23215c206 Mon Sep 17 00:00:00 2001
From: Cedric <ced@sdf.org>
Date: Sun, 12 Jan 2025 15:17:12 +0000
Subject: [PATCH] Use a sans-serif math font for pgfplots

pgfplots uses math fonts for graphs ticks... and it looks weird when
building sans serif.

Not sure Fira is necessarily a great choice with open-sans but we have
very little math so that should do...
---
 book/sourdough.sty | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/book/sourdough.sty b/book/sourdough.sty
index fe2f1ca..d38a7cd 100644
--- a/book/sourdough.sty
+++ b/book/sourdough.sty
@@ -52,8 +52,9 @@
 \DeclareRobustCommand\sbseries{\fontseries{sb}\selectfont}
 % Fonts for accessibility
 \ifdefined\isaccessible
-    \setmainfont{Open Sans}[
-    Scale=MatchLowercase]
+    \usepackage[mathrm=sym]{unicode-math}
+    \setmathfont{Fira Math}[Scale=MatchLowercase]
+    \setmainfont{Open Sans}[Scale=MatchLowercase]
 \else
     \setmainfont{TeX Gyre Pagella}[Scale=1.0] % Or Palatino Linotype, etc.
     % TODO not available on github CI