Properly terminate quote macros by means of new textstream function

This prevents kerning destruction.

src/insets/InsetQuotes.cpp

@@ -73,21 +73,21 @@ int quote_index[2][6] = {
 
 // Corresponding LaTeX code, for double and single quotes.
 char const * const latex_quote_t1[2][5] = {
-	{ "\\quotesinglbase ",  "'", "`",
-    "\\guilsinglleft{}", "\\guilsinglright{}" },
+	{ "\\quotesinglbase",  "'", "`",
+    "\\guilsinglleft", "\\guilsinglright" },
   { ",,", "''", "``", "<<", ">>" }
 };
 
 char const * const latex_quote_ot1[2][5] = {
-	{ "\\quotesinglbase ",  "'", "`",
-    "\\guilsinglleft{}", "\\guilsinglright{}" },
-  { "\\quotedblbase ", "''", "``",
-    "\\guillemotleft{}", "\\guillemotright{}" }
+	{ "\\quotesinglbase",  "'", "`",
+    "\\guilsinglleft", "\\guilsinglright" },
+  { "\\quotedblbase", "''", "``",
+    "\\guillemotleft", "\\guillemotright" }
 };
 
 char const * const latex_quote_babel[2][5] = {
-	{ "\\glq ",  "'", "`", "\\flq{}", "\\frq{}" },
-  { "\\glqq ", "''", "``", "\\flqq{}", "\\frqq{}" }
+	{ "\\glq",  "'", "`", "\\flq", "\\frq" },
+  { "\\glqq", "''", "``", "\\flqq", "\\frqq" }
 };
 
 char const * const html_quote[2][5] = {
@@ -269,9 +269,9 @@ void InsetQuotes::latex(otexstream & os, OutputParams const & runparams) const
 		// Specific guillemets of French babel
 		// including correct French spacing
 		if (side_ == LeftQuote)
-			qstr = "\\og "; //the spaces are important here
+			qstr = "\\og";
 		else
-			qstr = " \\fg{}"; //and here
+			qstr = " \\fg"; // the space is important here
 	} else if (fontenc_ == "T1" && !runparams.use_polyglossia) {
 		// Quotation marks for T1 font encoding
 		// (using ligatures)
@@ -302,6 +302,10 @@ void InsetQuotes::latex(otexstream & os, OutputParams const & runparams) const
 	}
 
 	os << from_ascii(qstr);
+	
+	if (prefixIs(qstr, "\\"))
+		// properly terminate the command depending on the context
+		os << termcmd;
 }