[vcs-log] users with different e-mails are not equal

platform/vcs-log/impl/src/com/intellij/vcs/log/impl/VcsUserImpl.java

@@ -23,8 +23,10 @@ import org.jetbrains.annotations.Nullable;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import java.util.Objects;
+
 /**
- * Note: users are considered equal if they have the same name, even if the e-mail is different.
+ * Note: users are considered equal if they have the same name and email. Emails are converted to lower case in constructor.
  */
 public class VcsUserImpl implements VcsUser {
   @NotNull private static final Pattern NAME_WITH_DOT = Pattern.compile("(\\w*)\\.(\\w*)");
@@ -35,7 +37,7 @@ public class VcsUserImpl implements VcsUser {
 
   public VcsUserImpl(@NotNull String name, @NotNull String email) {
     myName = name;
-    myEmail = email;
+    myEmail = email.toLowerCase();
   }
 
   @NotNull
@@ -58,13 +60,14 @@ public class VcsUserImpl implements VcsUser {
     VcsUserImpl user = (VcsUserImpl)o;
 
     if (!myName.equals(user.myName)) return false;
+    if (!myEmail.equals(user.myEmail)) return false;
 
     return true;
   }
 
   @Override
   public int hashCode() {
-    return myName.hashCode();
+    return Objects.hash(myName, myEmail);
   }
 
   @Override