1 files changed, 25 insertions, 0 deletions
diff --git a/platform/www/lib/plugins/config/core/Setting/SettingNumericopt.php b/platform/www/lib/plugins/config/core/Setting/SettingNumericopt.php
new file mode 100644
index 0000000..a486e18
--- /dev/null
+++ b/platform/www/lib/plugins/config/core/Setting/SettingNumericopt.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace dokuwiki\plugin\config\core\Setting;
+
+/**
+ * Class setting_numericopt
+ */
+class SettingNumericopt extends SettingNumeric {
+    // just allow an empty config
+    protected $pattern = '/^(|[-]?[0-9]+(?:[-+*][0-9]+)*)$/';
+
+    /**
+     * @inheritdoc
+     * Empty string is valid for numericopt
+     */
+    public function update($input) {
+        if($input === '') {
+            if($input == $this->local) return false;
+            $this->local = $input;
+            return true;
+        }
+
+        return parent::update($input);
+    }
+}