Add option completion for upgradepkg

contrib/pkgtools

@@ -55,7 +55,21 @@ _removepkg()
 } &&
 complete -F _removepkg -o filenames removepkg
 
-complete -o plusdirs -f -X '!*.t[bglx]z' installpkg upgradepkg explodepkg
+have upgradepkg && [ -f /etc/slackware-version ] &&
+_upgradepkg()
+{
+    COMPREPLY=()
+    local cur=`_get_cword`
+    if [[ "$cur" == -* ]]; then
+        COMPREPLY=( $( compgen -W '--dry-run --install-new --reinstall \
+            --verbose' -- "$cur") )
+        return 0
+    fi
+
+    COMPREPLY=( $(compgen -f -X "!*.t[bglx]z" -- "$cur") )
+} && complete -F _upgradepkg -o plusdirs upgradepkg
+
+complete -o plusdirs -f -X '!*.t[bglx]z' installpkg explodepkg
 
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 # mode: shell-script