From 937b26d3cc23ce86df6db204765b10f4ccf7ea5a Mon Sep 17 00:00:00 2001
From: Mobecls <a@mobecls.com>
Date: Fri, 15 Dec 2017 17:50:16 +0300
Subject: [PATCH 1/2] magento/magento2#5035

Cannot subscribe to events with a number in name
---
 .../Framework/Event/Test/Unit/Config/_files/valid_events.xml   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/valid_events.xml b/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/valid_events.xml
index 5cf120adb6b99..a9f445339e3dc 100644
--- a/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/valid_events.xml
+++ b/lib/internal/Magento/Framework/Event/Test/Unit/Config/_files/valid_events.xml
@@ -12,4 +12,7 @@
     <event name="authorization_roles_save_before">
         <observer name="second_name" instance="Some_Test_Value_Two" />
     </event>
+    <event name="authorization_roles_save_before123">
+        <observer name="second_name" instance="Some_Test_Value_Two" />
+    </event>
 </config>

From 85fa67170f413ea5f509c7f1e0cf870cae559bb3 Mon Sep 17 00:00:00 2001
From: Mobecls <a@mobecls.com>
Date: Fri, 15 Dec 2017 17:52:18 +0300
Subject: [PATCH 2/2] magento/magento2#5035

Cannot subscribe to events with a number in name
---
 lib/internal/Magento/Framework/Event/etc/events.xsd | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/internal/Magento/Framework/Event/etc/events.xsd b/lib/internal/Magento/Framework/Event/etc/events.xsd
index ad7c5e59da99c..d656b7fdb6ed6 100644
--- a/lib/internal/Magento/Framework/Event/etc/events.xsd
+++ b/lib/internal/Magento/Framework/Event/etc/events.xsd
@@ -60,11 +60,11 @@
     <xs:simpleType name="eventName">
         <xs:annotation>
             <xs:documentation>
-                Event name can contain only [a-zA-Z_].
+                Event name can contain only [a-zA-Z0-9_].
             </xs:documentation>
         </xs:annotation>
         <xs:restriction base="xs:string">
-            <xs:pattern value="[a-zA-Z_]+" />
+            <xs:pattern value="[a-zA-Z0-9_]+" />
         </xs:restriction>
     </xs:simpleType>
 </xs:schema>