From 46aed6d2b90cafed93a6ee996ec72c09a6325f92 Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Fri, 19 Jun 2015 19:02:35 +0200
Subject: [PATCH] Refine lang nesting fix

---
 src/output_latex.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/output_latex.cpp b/src/output_latex.cpp
index fdfe7f83e7..80cb990442 100644
--- a/src/output_latex.cpp
+++ b/src/output_latex.cpp
@@ -194,6 +194,8 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
 	}
 
 	if (style.isEnvironment()) {
+		if (par_lang != doc_lang)
+			state->open_polyglossia_lang_ = par_lang;
 		os << "\\begin{" << from_ascii(style.latexname()) << '}';
 		if (!style.latexargs().empty()) {
 			OutputParams rp = runparams;
@@ -969,10 +971,8 @@ void TeXOnePar(Buffer const & buf,
 					unskip_newline = !localswitch;
 				}
 			} else if (!par_lang.empty()) {
-				// If we are in an environment, we have to close the language afterwards
-				if (style.isEnvironment())
-					state->open_polyglossia_lang_ = par_lang;
-				else {
+				// If we are in an environment, we have to close the "outer" language afterwards
+				if (!style.isEnvironment() || state->open_polyglossia_lang_ != par_lang) {
 					os << from_ascii(subst(
 						lang_end_command,
 						"$$lang",
-- 
2.39.2