From 24d8d880c16b889a3128575dab27a530337a0134 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@lyx.org>
Date: Wed, 29 Jun 2016 22:47:21 -0400
Subject: [PATCH] Add class attribute for \mathbb in XHTML output. Fixes part
 of 8251.

Patch from Josh.

(cherry picked from commit e3625b5b8052e75e8741152bdfd313b54969c675)
---
 src/mathed/InsetMathFont.cpp | 12 +++++++++---
 status.22x                   |  3 +++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/mathed/InsetMathFont.cpp b/src/mathed/InsetMathFont.cpp
index 18af75d528..a017dd810c 100644
--- a/src/mathed/InsetMathFont.cpp
+++ b/src/mathed/InsetMathFont.cpp
@@ -194,9 +194,15 @@ void InsetMathFont::mathmlize(MathStream & os) const
 	// no support at present for textipa, textsc, noun
 
 	if (!variant.empty()) {
-		os << MTag("mstyle", "mathvariant='" + variant + "'")
-		   << cell(0)
-		   << ETag("mstyle");
+		if (tag == "mathbb") {
+			os << MTag("mstyle", "class='mathbb' mathvariant='" + variant + "'")
+			   << cell(0)
+			   << ETag("mstyle");
+		} else {
+			os << MTag("mstyle", "mathvariant='" + variant + "'")
+				 << cell(0)
+				 << ETag("mstyle");
+		}
 	} else
 		os << cell(0);
 }
diff --git a/status.22x b/status.22x
index a23d38815c..151583f90c 100644
--- a/status.22x
+++ b/status.22x
@@ -173,6 +173,9 @@ What's new
 
 - Output correct entities for named delimiters (bug 8280).
 
+- Added class attribute for mathbb to allow customization (part of bug
+  8521).
+
 
 * TEX2LYX
 
-- 
2.39.5