Use sort -u instead of sort | uniq where appropriate.

contrib/apt

@@ -98,8 +98,7 @@ _apt_cache()
 
         showsrc)
             COMPREPLY=( $( apt-cache dumpavail | \
-                            grep "^Source: $cur" | sort | \
-                            uniq | cut -f2 -d" " ) )
+                            grep "^Source: $cur" | sort -u | cut -f2 -d" " ) )
             return 0
             ;;
 

contrib/mcrypt

@@ -22,7 +22,7 @@ _mcrypt()
         -m|--mode)
             COMPREPLY=( $( compgen -W "$( mcrypt --list \
                 2>/dev/null | sed -e 's/.*: //' -e 's/ $//' | \
-                sort | uniq )" -- "$cur" ) )
+                sort -u )" -- "$cur" ) )
             return 0
             ;;
         -a|--algorithm)