diff -ur xchat2.orig/src/common/text.c xchat2/src/common/text.c
--- xchat2.orig/src/common/text.c	2005-11-06 22:47:49.000000000 -0500
+++ xchat2/src/common/text.c	2005-12-15 21:46:59.750000000 -0500
@@ -149,6 +149,22 @@
 	return dest - 1;
 }
 
+static char *
+magic_strcpy (char *dest, char *src, char *end)
+{
+	while (*src)
+	{
+		*dest = *src;
+		if (dest + 1 == end)
+			break;
+		dest++;
+		src++;
+	}
+
+	dest[0] = 0;
+	return dest - 1;
+}
+
 /* substitutes %c %n %s into buffer */
 
 static void
@@ -177,6 +193,12 @@
 			case 's':
 				buf = log_escape_strcpy (buf, s, end);
 				break;
+			case 'D':
+				buf = magic_strcpy (buf, "%m/%d/%y", end);
+				break;
+			case 'F':
+				buf = magic_strcpy (buf, "%Y-%m-%d", end);
+				break;
 			default:
 				buf[0] = '%';
 				buf++;