fix parsing of \let: tex2lyx must not enclose the arguments with {}.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@37016 a592a061-630c-0410-9148-cb99ea01b6c8

lib/syntax.default

@@ -477,7 +477,7 @@ $$
 \labelitemiv
 \language{}
 % We need this because the arguments must not be interpreted
-\let{}{}
+\let{item}{item}
 % \line(,){}    %picture
 \linebreak[]
 \linethickness{}

src/tex2lyx/tex2lyx.cpp

@@ -189,6 +189,8 @@ void read_command(Parser & p, string command, CommandMap & commands)
 			string const arg = p.getArg('{', '}');
 			if (arg == "translate")
 				arguments.push_back(required);
+			else if (arg == "item")
+				arguments.push_back(item);
 			else
 				arguments.push_back(verbatim);
 		} else {

src/tex2lyx/tex2lyx.h

@@ -100,6 +100,7 @@ std::string active_environment();
 enum ArgumentType {
 	required,
 	verbatim,
+	item,
 	optional
 };
 

src/tex2lyx/text.cpp

@@ -585,6 +585,15 @@ void parse_arguments(string const & command,
 			parse_text(p, os, FLAG_ITEM, outer, context);
 			ert = "}";
 			break;
+		case item:
+			// This argument consists only of a single item.
+			// The presence of '{' or not must be preserved.
+			p.skip_spaces();
+			if (p.next_token().cat() == catBegin)
+				ert += '{' + p.verbatim_item() + '}';
+			else
+				ert += p.verbatim_item();
+			break;
 		case verbatim:
 			// This argument may contain special characters
 			ert += '{' + p.verbatim_item() + '}';