#10738 - Allow config unset for unrecognized keys (#10756)

* Allow config unset for unrecognized keys

* Move config key removal after all other checks

Because key removal is done without matching the key in the recognized composer.json schema, leaving the key removal before other check would have stopped the execution there without reaching the specific config add (eg. composer config repo [--unset])

Co-authored-by: Liviu Iosif <liviu.iosif@code932.com>

src/Composer/Command/ConfigCommand.php

@@ -634,11 +634,6 @@ EOT
         if ($input->getOption('global') && (isset($uniqueProps[$settingKey]) || isset($multiProps[$settingKey]) || strpos($settingKey, 'extra.') === 0)) {
             throw new \InvalidArgumentException('The ' . $settingKey . ' property can not be set in the global config.json file. Use `composer global config` to apply changes to the global composer.json');
         }
-        if ($input->getOption('unset') && (isset($uniqueProps[$settingKey]) || isset($multiProps[$settingKey]))) {
-            $this->configSource->removeProperty($settingKey);
-
-            return 0;
-        }
         if (isset($uniqueProps[$settingKey])) {
             $this->handleSingleValue($settingKey, $uniqueProps[$settingKey], $values, 'addProperty');
 
@@ -801,6 +796,12 @@ EOT
             return 0;
         }
 
+        if ($input->getOption('unset')) {
+            $this->configSource->removeProperty($settingKey);
+
+            return 0;
+        }
+
         throw new \InvalidArgumentException('Setting '.$settingKey.' does not exist or is not supported by this command');
     }