```
reedy@ubuntu64-web-esxi:/var/www/wiki/mediawiki/vendor$ composer outdated
wikimedia/composer-merge-plugin contains a Composer plugin which is currently not in your allow-plugins config. See https://getcomposer.org/allow-plugins
Do you trust "wikimedia/composer-merge-plugin" to execute code and wish to enable it now? (writes "allow-plugins" to composer.json) [y,n,d,?] ?
y - add package to allow-plugins in composer.json and let it run immediately
n - add package (as disallowed) to allow-plugins in composer.json to suppress further prompts
d - discard this, do not change composer.json and do not allow the plugin to run
? - print help
Do you trust "wikimedia/composer-merge-plugin" to execute code and wish to enable it now? (writes "allow-plugins" to composer.json) [y,n,d,?] y
<snip>
$ git diff
diff --git a/composer.json b/composer.json
index 7ed377e6..1194d72e 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,10 @@
"optimize-autoloader": true,
"prepend-autoloader": false,
"vendor-dir": ".",
- "sort-packages": true
+ "sort-packages": true,
+ "allow-plugins": {
+ "wikimedia/composer-merge-plugin": true
+ }
},
"prefer-stable": true,
"require": {
```