Split yum into _yum and yum-arch.

The plan is to move yum completion to yum upstream soon:
http://lists.baseurl.org/pipermail/yum-devel/2009-August/005777.html

CHANGES

@@ -34,8 +34,10 @@ bash-completion (1.x)
   * Added avahi-discovered hosts to _known_hosts_real() (Debian: #518561)
 
   [ Ville Skyttä ]
-  * Split yum and yum-arch completion into contrib/yum.
-  * Install yum-arch completion only if yum-arch is installed.
+  * Split yum completion to contrib/_yum (no longer installed by default, the
+    intent is to move it to yum upstream soon).
+  * Split yum-arch completion into contrib/yum-arch, load completion only if
+    yum-arch is installed.
   * Update list of yum commands and options.
   * Add yum repolist, --enable/disablerepo, --disableexcludes, -d, -e, --color,
     and --enable/disableplugin completions.

Makefile.am

@@ -142,6 +142,6 @@ bashcomp_DATA = contrib/ant \
 		contrib/xrandr \
 		contrib/xz \
 		contrib/yp-tools \
-		contrib/yum
+		contrib/yum-arch
 
-EXTRA_DIST = $(sysconf_DATA) $(bashcomp_DATA) contrib/_subversion
+EXTRA_DIST = $(sysconf_DATA) $(bashcomp_DATA) contrib/_subversion contrib/_yum

contrib/yum-arch

@@ -0,0 +1,25 @@
+# -*- mode: shell-script; sh-basic-offset: 8; indent-tabs-mode: t -*-
+# ex: ts=8 sw=8 noet filetype=sh
+
+# yum-arch(8) completion
+#
+have yum-arch &&
+_yum_arch()
+{
+	local cur
+	COMPREPLY=()
+	cur=`_get_cword`
+
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W '-d -v -vv -n -c -z -s -l \
+				-q' -- $cur ) )
+			;;
+		*)
+			_filedir -d
+			;;
+	esac
+
+	return 0
+} &&
+complete -F _yum_arch $filenames yum-arch