diff -Nru chorder-1.0.0-20~85235fc/chorder chorder-1.0.0-21~9f9496c/chorder
--- chorder-1.0.0-20~85235fc/chorder	2013-12-19 20:08:50.000000000 +0000
+++ chorder-1.0.0-21~9f9496c/chorder	2014-01-07 09:04:03.000000000 +0000
@@ -67,6 +67,9 @@
    -o <file>    Write to the specified output file instead of stdout.
    -d <file>    Write debug messages to the specified file instead of sterr.
    -t <file>    Template file.
+   -U           Unique channels only. If there are several channels with the 
+                same name, provider and source, only the first channel is 
+                selected and the remaining are filtered out.
    -v           Verbose mode - print debug information.
    -h           Print help.
 EOF
@@ -89,7 +92,7 @@
 ################################################################################
 
 ############################## Parse arguments #################################
-while getopts 'x:X:f:F:i:o:d:t:vh' o
+while getopts 'x:X:f:F:i:o:d:t:Uvh' o
 do
     case "$o" in
     x)
@@ -128,6 +131,10 @@
         TEMPLATE="$OPTARG"
         shift 2
         ;;
+    U)
+        UNIQUE_ONLY='true'
+        shift 1
+        ;;
     v)
         VERBOSE='true'
         shift 1
@@ -166,22 +173,25 @@
 ################################################################################
 
 ############################## Delete duplicates ###############################
-debug '\nDuplicates:'
-> "$TMP_OUTPUT_FILE"
+if [ "$UNIQUE_ONLY" = 'true' ]
+then
+    debug '\nFiltered out:'
+    > "$TMP_OUTPUT_FILE"
 
-perl -ne 'print if s/'"$CH_PATTERN"'/$f7=(($7 eq 0) or (index($7, "0=", 0) eq 0)) ? "0(=.*)?" : "([1-9]|[0-9]{2,}?)(=.*)?"; " *(\\\\Q$1\\\\E) *".";"." *(\\\\Q$2\\\\E) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(\\\\Q$5\\\\E) *".":"." *(.+?) *".":"." *($f7) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *"/ge' < "$TMP_INPUT_FILE" | sort -Vu | \
-while read i
-do
-    grep -P "^ $i\$" < "$TMP_INPUT_FILE" | tee "$TMP_FILE" | head -n 1 >> "$TMP_OUTPUT_FILE"
+    perl -ne 'print if s/'"$CH_PATTERN"'/$f7=(($7 eq 0) or (index($7, "0=", 0) eq 0)) ? "0(=.*)?" : "([1-9]|[0-9]{2,}?)(=.*)?"; " *(\\\\Q$1\\\\E) *".";"." *(\\\\Q$2\\\\E) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(\\\\Q$5\\\\E) *".":"." *(.+?) *".":"." *($f7) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *".":"." *(.+?) *"/ge' < "$TMP_INPUT_FILE" | sort -Vu | \
+    while read i
+    do
+        grep -P "^ $i\$" < "$TMP_INPUT_FILE" | tee "$TMP_FILE" | head -n 1 >> "$TMP_OUTPUT_FILE"
 
-    # Debug duplicates
-    if [ ! -z "$VERBOSE" ] && [ "$(wc -l < "$TMP_FILE")" != '1' ]
-    then
-        tail -n +2 "$TMP_FILE" >> "$DEBUG"
-    fi
-done
+        # Debug filtered
+        if [ ! -z "$VERBOSE" ] && [ "$(wc -l < "$TMP_FILE")" != '1' ]
+        then
+            tail -n +2 "$TMP_FILE" >> "$DEBUG"
+        fi
+    done
 
-mv "$TMP_OUTPUT_FILE" "$TMP_INPUT_FILE"
+    mv "$TMP_OUTPUT_FILE" "$TMP_INPUT_FILE"
+fi
 ################################################################################
 
 ############################## Order channels ##################################
diff -Nru chorder-1.0.0-20~85235fc/debian/changelog chorder-1.0.0-21~9f9496c/debian/changelog
--- chorder-1.0.0-20~85235fc/debian/changelog	2013-12-19 20:08:52.000000000 +0000
+++ chorder-1.0.0-21~9f9496c/debian/changelog	2014-01-07 09:04:09.000000000 +0000
@@ -1,6 +1,7 @@
-chorder (1.0.0-20~85235fc-ppa1~raring) raring; urgency=medium
+chorder (1.0.0-21~9f9496c-ppa1~raring) raring; urgency=medium
 
-  * [85235fcaa0807f84f5e93ca64eee513c24c22be3]
-    Use sort -Vu instead of uniq.
+  * [9f9496c6bb1e812f7ddf33690ee952c56c620c50]
+    Do not delete duplicates by default.
+    Fixes #1.
 
- -- Andrey Pavlenko <andrey.a.pavlenko@gmail.com>  Fri, 20 Dec 2013 00:08:52 +0400
+ -- Andrey Pavlenko <andrey.a.pavlenko@gmail.com>  Tue, 07 Jan 2014 13:04:08 +0400