--- a/doodle/core/logging.d	Sun Aug 08 22:01:54 2010 +0930
+++ b/doodle/core/logging.d	Mon Aug 09 21:43:24 2010 +0930
@@ -3,26 +3,50 @@
 private {
     import std.stdio;
     import std.typecons;
+    import std.traits;
 }
 
 public {
-    void trace(string file = __FILE__, int line = __LINE__)(in string message) {
-        log(Severity.TRACE,   std.string.format("%s(%d):   TRACE: %s", right(file, 20), line, message));
+    void trace(string file = __FILE__, int line = __LINE__, S...)(S args) {
+        static assert(S.length > 0);
+        static assert(isSomeString!(S[0]));
+        log(Severity.TRACE,
+            std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, std.string.format(args)));
     }
-    void info(string file = __FILE__, int line = __LINE__)(in string message) {
-        log(Severity.INFO,    std.string.format("%s(%d):    INFO: %s", right(file, 20), line, message));
+
+    void info(string file = __FILE__, int line = __LINE__, S...)(S args) {
+        static assert(S.length > 0);
+        static assert(isSomeString!(S[0]));
+        log(Severity.INFO,
+            std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, std.string.format(args)));
     }
-    void message(string file = __FILE__, int line = __LINE__)(in string message) {
-        log(Severity.MESSAGE, std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, message));
+
+    void message(string file = __FILE__, int line = __LINE__, S...)(S args) {
+        static assert(S.length > 0);
+        static assert(isSomeString!(S[0]));
+        log(Severity.MESSAGE,
+            std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, std.string.format(args)));
     }
-    void warning(string file = __FILE__, int line = __LINE__)(in string message) {
-        log(Severity.WARNING, std.string.format("%s(%d): WARNING: %s", right(file, 20), line, message));
+
+    void warning(string file = __FILE__, int line = __LINE__, S...)(S args) {
+        static assert(S.length > 0);
+        static assert(isSomeString!(S[0]));
+        log(Severity.WARNING,
+            std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, std.string.format(args)));
     }
-    void error(string file = __FILE__, int line = __LINE__)(in string message) {
-        log(Severity.ERROR,   std.string.format("%s(%d):   ERROR: %s", right(file, 20), line, message));
+
+    void error(string file = __FILE__, int line = __LINE__, S...)(S args) {
+        static assert(S.length > 0);
+        static assert(isSomeString!(S[0]));
+        log(Severity.ERROR,
+            std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, std.string.format(args)));
     }
-    void fatal(string file = __FILE__, int line = __LINE__)(in string message) {
-        log(Severity.FATAL,   std.string.format("%s(%d):   FATAL: %s", right(file, 20), line, message));
+
+    void fatal(string file = __FILE__, int line = __LINE__, S...)(S args) {
+        static assert(S.length > 0);
+        static assert(isSomeString!(S[0]));
+        log(Severity.FATAL,
+            std.string.format("%s(%d): MESSAGE: %s", right(file, 20), line, std.string.format(args)));
         assert(0);
     }
 }
@@ -52,9 +76,7 @@
     }
 
     void log(in Severity severity, in string message) {
-        write(severityString(severity));
-        write(message);
-        writeln(modifierString(Modifier.RESET));
+        writeln(severityString(severity), message, modifierString(Modifier.RESET));
     }
 
     enum Modifier {