diff --git a/less.changes b/less.changes
index ea4e04f..3430e6e 100644
--- a/less.changes
+++ b/less.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Mon May  6 20:20:03 UTC 2013 - sleep_walker@suse.cz
+
+- make sure that -R or --RAW-CONTROL-CHARS is set in LESS
+  environment variable
+
+-------------------------------------------------------------------
+Mon May  6 13:23:33 UTC 2013 - sleep_walker@suse.cz
+
+- add support for colordiff in lessopen.sh
+
 -------------------------------------------------------------------
 Wed Mar 20 16:31:12 UTC 2013 - idonmez@suse.com
 
diff --git a/lessopen.sh b/lessopen.sh
index 91156da..731977e 100644
--- a/lessopen.sh
+++ b/lessopen.sh
@@ -105,6 +105,35 @@ test -n "$CMD" && $CMD "$SRC" >"$TMPF_pre" 2>/dev/null
 			# assuming ls is always available
 			ls -lh "$TMPF_pre" >"$TMPF" 2>/dev/null
 			;;
+	        *diff\ output*)
+			# I haven't found way, to set less -R from this script
+			# so check, if '-R' or '--RAW-CONTROL-CHARS' is set in environment
+			R_NOT_SET=true
+			for i in $LESS; do
+				if [ "${i:0:1}" = "-" ]; then
+					if [ "${i:1:1}" = "-" ]; then
+						if [ "$i" = --RAW-CONTROL-CHARS ]; then
+							R_NOT_SET=false
+							break
+						else
+							continue
+						fi
+					else
+						for j in `seq 1 $((${#i} - 1 ))`; do
+							if [ "${i:j:1}" = R ]; then
+								R_NOT_SET=false
+								break
+							fi
+						done
+					fi
+				fi
+			done
+			# if we have -R and colordiff, we can continue
+			if [ $R_NOT_SET = false ] && \
+				[ -x "`which colordiff 2>/dev/null`" ]; then
+			colordiff < "$TMPF_pre" | cat > "$TMPF" 2>/dev/null
+			else TMPF="$TMPF_pre"; fi
+			;;
 		*)
 			if [ "$LESS_ADVANCED_PREPROCESSOR" = "yes" ]; then
 				case ${type#"$TMPF_pre": } in