[FIXED JENKINS-9016] If no Jenkins user is found for the commit's user.name value, use the username section of the email address instead.

Author: abayer

src/main/java/hudson/plugins/git/GitChangeSet.java

@@ -230,8 +230,11 @@ public User getAuthor() {
             throw new RuntimeException("No author in this changeset!");
         }
 
-        User user = User.get(csAuthor, true);
+        User user = User.get(csAuthor, false);
 
+        if (user == null) 
+            user = User.get(csAuthorEmail.split("@")[0], true);
+    
         // set email address for user if needed
         if (fixEmpty(csAuthorEmail) != null) {
             try {