From 78e7de848f072d19e6c99865f793dbec482c7858 Mon Sep 17 00:00:00 2001
From: Nick Bowler <nbowler@draconx.ca>
Date: Wed, 24 Jun 2020 01:02:25 -0400
Subject: [PATCH] Adjust whitespace preservation rules.

We don't generally want to delete whitespace between span elements.

An exception is made if all sibling text nodes are whitespace, in
which case they should all be removed to allow indentation.
---
 layouts/default.xsl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/layouts/default.xsl b/layouts/default.xsl
index f95a2c7..eaeef72 100644
--- a/layouts/default.xsl
+++ b/layouts/default.xsl
@@ -103,6 +103,13 @@
     <xsl:when test='ancestor::xhtml:pre'><xsl:copy /></xsl:when>
     <!-- preserve whitespace which is the only child node of an element -->
     <xsl:when test='count(../node()) = 1'><xsl:copy /></xsl:when>
+    <!-- preserve whitespace between consecutive span-level elements
+         which have at least one non-whitespace sibling text element -->
+    <xsl:when test='f:element-is-span(preceding-sibling::node()[1])
+                    and f:element-is-span(following-sibling::node()[1])
+                    and ../text()[normalize-space(.) != ""]'>
+      <xsl:copy />
+    </xsl:when>
   </xsl:choose>
 </xsl:template>
 
-- 
2.43.0