adapt tex2lyx to 0beb790a6a

(cherry picked from commit f725abea05)

src/insets/InsetRef.cpp

@@ -288,6 +288,11 @@ void InsetRef::latex(otexstream & os, OutputParams const & rp) const
 		os << fcmd;
 		if (use_refstyle && use_plural)
 			os << "[s]";
+		if (contains(label, ' '))
+			// refstyle bug: labels with blanks need to be grouped
+			// otherwise the blanks will be gobbled
+			os << "{{" << label << "}}";
+		else
 			os << '{' << label << '}';
 	}
 	else if (cmd == "labelonly") {

src/support/lstrings.cpp

@@ -1242,7 +1242,7 @@ docstring const escape(docstring const & lab)
 	for (char_type const c : lab) {
 		if (c >= 128 || c == '=' || c == '%' || c == '#' || c == '$'
 		    || c == '}' || c == '{' || c == ']' || c == '[' || c == '&'
-		    || c == '\\' || c == ' ') // refstyle doesn't support spaces
+		    || c == '\\')
 		{
 			// Although char_type is a 32 bit type we know that
 			// UCS4 occupies only 21 bits, so we don't need to

src/tex2lyx/text.cpp

@@ -4533,7 +4533,12 @@ void parse_text(Parser & p, ostream & os, unsigned flags, bool outer,
 			os << "reference \"";
 			os << known_refstyle_prefixes[where - known_refstyle_commands]
 			   << ":";
-			os << convert_literate_command_inset_arg(p.getArg('{', '}'))
+			string arg = p.getArg('{', '}');
+			// with refstyle, labels containing blanks are grouped
+			// remove the grouping
+			if (contains(arg, ' '))
+				arg = ltrim(rtrim(arg, "}"), "{");
+			os << convert_literate_command_inset_arg(arg)
 			   << "\"\n";
 			os << "plural \"" << plural << "\"\n";
 			os << "caps \"" << cap << "\"\n";

status.24x

@@ -88,6 +88,8 @@ What's new
 
 - Handle linguistic structure trees in ePub and PDF (DocBook) output (bug 12372).
 
+- Improve the way spaces are handled in labels when refstyle is used.
+
 
 * USER INTERFACE