From f37ecaec80b6433bf6fb58c6d0294ffeddde0cec Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Wed, 25 Oct 2023 16:54:46 -0400
Subject: [PATCH] svgclean.xsl: new XSL stylesheet to help clean up our
 inkscape mess

There are a few more cleanup/minimization opportunities left in our
SVG, even after it has been scoured. For example, inkscape wraps all
of its text in redundant <tspan> elements, even when the parent <text>
has the same style as the sole <tspan>. We'd like to remove those, to
simplify the code and save space.

XSLT can do this. This new stylesheet can do this. We add it now, in
preparation for yet another SVG processing phase.
---
 svgclean.xsl | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 svgclean.xsl

diff --git a/svgclean.xsl b/svgclean.xsl
new file mode 100644
index 0000000..2a1c2d2
--- /dev/null
+++ b/svgclean.xsl
@@ -0,0 +1,25 @@
+<?xml version="1.0"?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+		xmlns:svg="http://www.w3.org/2000/svg"
+		version="1.0">
+  <xsl:output method="xml" encoding="UTF-8" />
+
+  <!--
+    The first rule replaces a <tspan> inside of a <text> with its
+    contents.
+  -->
+  <xsl:template match="svg:text/svg:tspan">
+    <xsl:value-of select="text()" />
+  </xsl:template>
+
+  <!--
+    Then this rule matches everything, and copies it while applying
+    any relevant templates to its children. Either we'll hit a <tspan>
+    within a <text> and process it, or we'll hit this rule again.
+  -->
+  <xsl:template match="*|@*">
+    <xsl:copy>
+      <xsl:apply-templates select="*|@*" />
+    </xsl:copy>
+  </xsl:template>
+</xsl:stylesheet>
-- 
2.44.2