From 0e6cb4e599cc8aaf191200a963fa916274dc9b7f Mon Sep 17 00:00:00 2001
From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Thu, 13 Dec 2018 10:27:20 +0100
Subject: [PATCH] Set buffer correctly when changing math space type.

Fixes bug #7747.

(cherry picked from commit 2ec25c8eef8c9acca3cb572800eab933c8564831)
---
 src/mathed/InsetMathSpace.cpp | 2 ++
 status.23x                    | 1 +
 2 files changed, 3 insertions(+)

diff --git a/src/mathed/InsetMathSpace.cpp b/src/mathed/InsetMathSpace.cpp
index 88aae1d4a6..79a4314285 100644
--- a/src/mathed/InsetMathSpace.cpp
+++ b/src/mathed/InsetMathSpace.cpp
@@ -320,9 +320,11 @@ void InsetMathSpace::doDispatch(Cursor & cur, FuncRequest & cmd)
 	case LFUN_INSET_MODIFY:
 		if (cmd.getArg(0) == "mathspace") {
 			MathData ar;
+			Buffer * buf = buffer_;
 			if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
 				cur.recordUndo();
 				*this = *ar[0].nucleus()->asSpaceInset();
+				buffer_ = buf;
 				break;
 			}
 		}
diff --git a/status.23x b/status.23x
index 8eaa54b0a5..4f50e5c198 100644
--- a/status.23x
+++ b/status.23x
@@ -63,6 +63,7 @@ What's new
 
 - Do not swallow backspaces in custom viewer/editor paths (bug 9622).
 
+- Fix broken space dialog in mathed (bug 7747).
 
 * INTERNALS
 
-- 
2.39.5