From ffd6a28a971e378a6e0d220aec8ac2c1518daa09 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@lyx.org>
Date: Sat, 30 Jul 2016 00:25:09 -0400
Subject: [PATCH] Fix HTML display of math matrices.

(cherry picked from commit 60ce2b7570e65ccf31738c39211b0997113e4d57)
---
 src/mathed/InsetMathGrid.cpp | 14 ++++++++++++++
 src/mathed/InsetMathGrid.h   |  2 ++
 status.22x                   |  2 ++
 3 files changed, 18 insertions(+)

diff --git a/src/mathed/InsetMathGrid.cpp b/src/mathed/InsetMathGrid.cpp
index 3d120a5da8..e5044947e7 100644
--- a/src/mathed/InsetMathGrid.cpp
+++ b/src/mathed/InsetMathGrid.cpp
@@ -26,6 +26,7 @@
 #include "FuncStatus.h"
 #include "Cursor.h"
 #include "FuncRequest.h"
+#include "LaTeXFeatures.h"
 
 #include "frontends/Clipboard.h"
 #include "frontends/Painter.h"
@@ -1237,6 +1238,19 @@ void InsetMathGrid::htmlize(HtmlStream & os) const
 }
 
 
+void InsetMathGrid::validate(LaTeXFeatures & features) const
+{
+	if (features.runparams().math_flavor == OutputParams::MathAsHTML
+	    && (nrows() > 1 || ncols() > 1)) {
+		// CSS taken from InsetMathCases
+		features.addCSSSnippet(
+			"table.mathtable{display: inline-block; text-align: center; border: none;"
+			"border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
+			"table.mathtable td {text-align: left; border: none;}");
+	}
+}
+
+
 void InsetMathGrid::write(WriteStream & os) const
 {
 	write(os, 0, 0, nrows(), ncols());
diff --git a/src/mathed/InsetMathGrid.h b/src/mathed/InsetMathGrid.h
index e9ea396930..426d941f19 100644
--- a/src/mathed/InsetMathGrid.h
+++ b/src/mathed/InsetMathGrid.h
@@ -239,6 +239,8 @@ public:
 	///
 	void htmlize(HtmlStream &, std::string attrib) const;
 	///
+	void validate(LaTeXFeatures & features) const;
+	///
 	//void octave(OctaveStream &) const;
 
 protected:
diff --git a/status.22x b/status.22x
index 8d1a40984a..89fd9173a2 100644
--- a/status.22x
+++ b/status.22x
@@ -100,6 +100,8 @@ What's new
 - Add "dir='auto'" to body tag, which should help a lot with export of
   RTL languages (bug 8279, partly).
 
+- Fix display of cases and matrices (bugs 8753, 8755).
+
 
 * TEX2LYX