Autocomplete extern(...) declarations

autocomplete.d

@@ -72,6 +72,14 @@ AutocompleteResponse complete(AutocompleteRequest request, string[] importPaths)
                 response.completions ~= versions[i];
                 response.completionKinds ~= CompletionKind.keyword;
             }
+            break;
+		case TokenType.extern_:
+            response.completionType = CompletionType.identifiers;
+            for (size_t i = 0; i < linkages.length; i++)
+            {
+                response.completions ~= linkages[i];
+                response.completionKinds ~= CompletionKind.keyword;
+            }
             break;
         case TokenType.pragma_:
             response.completionType = CompletionType.identifiers;

constants.d

@@ -29,6 +29,18 @@ immutable string[] pragmas = [
     "startaddress"
 ];
 
+/**
+ * Linkage types
+ */
+immutable string[] linkages = [
+	"C",
+	"C++",
+	"D",
+	"Pascal",
+	"System",
+	"Windows",
+];
+
 /**
  * Traits arguments
  */

server.d

@@ -27,7 +27,7 @@ import msgpack;
 import messages;
 import autocomplete;
 
-void main(string[] args)
+int main(string[] args)
 {
     ushort port = 9166;
     bool help;
@@ -85,6 +85,7 @@ void main(string[] args)
             assert(s.send(responseBytes) == responseBytes.length);
         }
     }
+	return 0;
 }
 
 void printHelp(string programName)