Use _split_longopt in _chkconfig.

CHANGES

@@ -34,8 +34,8 @@ bash-completion (1.x)
     input in external command arguments.
   * Add _split_longopt() helper for improved handling of long options that
     take arguments in both "--foo bar" and "--foo=bar" formats.
-  * Use _split_longopt to improve and clean up aspell, chgrp, chown, and
-    generic long option completion.
+  * Use _split_longopt to improve and clean up aspell, chgrp, chown, chkconfig,
+    and generic long option completion.
   * Add chown --from and --reference value completions.
   * Add chgrp --reference value completion.
   * Do not assume all --foo= options take filenames in generic long option

bash_completion

@@ -2636,14 +2636,16 @@ complete -F _chsh chsh
 have chkconfig &&
 _chkconfig()
 {
-	local cur prev
+	local cur prev split=false
 
 	COMPREPLY=()
 	cur=`_get_cword`
 	prev=${COMP_WORDS[COMP_CWORD-1]}
 
+	_split_longopt && split=true
+
 	case "$prev" in
-	@([1-6]|--@(list|add|del)))
+	@(?(--level=)[1-6]|--@(list|add|del|override)))
 		_services
 		return 0
 		;;
@@ -2653,6 +2655,8 @@ _chkconfig()
 		;;
 	esac
 
+	$split && return 0
+
 	if [[ "$cur" == -* ]]; then
 		COMPREPLY=( $( compgen -W '--list --add --del --override \
 						--level' -- $cur ) )