The following code fixes the issue.

<pre><code class="diff">
diff --git a/app/helpers/users_helper.rb b/app/helpers/users_helper.rb
index c9e4e198f..e773b9eee 100644
--- a/app/helpers/users_helper.rb
+++ b/app/helpers/users_helper.rb
@@ -60,6 +60,12 @@ module UsersHelper
end
end

+ def user_emails(user)
+ emails = [user.mail]
+ emails += user.email_addresses.order(:id).where(:is_default => false).pluck(:address)
+ emails.map {|email| mail_to(email, nil)}.join(', ').html_safe
+ end
+
def user_settings_tabs
tabs = [{:name => 'general', :partial => 'users/general', :label => :label_general},
{:name => 'memberships', :partial => 'users/memberships', :label => :label_project_plural}
diff --git a/app/views/users/show.html.erb b/app/views/users/show.html.erb
index e97119bab..fabf91dae 100644
--- a/app/views/users/show.html.erb
+++ b/app/views/users/show.html.erb
@@ -9,7 +9,7 @@
<ul>
<li><%=l(:field_login)%>: <%= @user.login %></li>
<% unless @user.pref.hide_mail %>
- <li><%=l(:field_mail)%>: <%= mail_to(@user.mail, nil, :encode => 'javascript') %></li>
+ <li><%=l(:field_mail)%>: <%= user_emails(@user) %></li>
<% end %>
<% @user.visible_custom_field_values.each do |custom_value| %>
<% if !custom_value.value.blank? %>
</code></pre>
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Attaching a patch.
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Setting the target version to 4.2.0.
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Committed the patch.
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