<% include_tag_hover_highlight ||= false %>
<div>
  <h5><%= t('.title') %></h5>
  <ul id="tag-sidebar">
    <%= tag_links(@tags[:exclude], :prefix => "-", :with_hover_highlight => true, :with_hover_highlight => include_tag_hover_highlight) %>
    <%= tag_links(@tags[:include], :with_aliases => @include_tag_reverse_aliases, :with_hover_highlight => include_tag_hover_highlight) %>
    <%= tag_links(Tag.find_related(@tags[:related].to_a), :with_hover_highlight => true, :with_hover_highlight => include_tag_hover_highlight) %>
  </ul>
</div>

<% include_tag_hover_highlight = false if include_tag_hover_highlight.nil? %>
<div>
  <h5><%= t('.title') %></h5>
  <ul id="tag-sidebar">
    <%= tag_links(@tags[:exclude], :prefix => "-", :with_hover_highlight => include_tag_hover_highlight) %>
    <%= tag_links(@tags[:include], :with_aliases => @include_tag_reverse_aliases, :with_hover_highlight => include_tag_hover_highlight) %>
    <%= tag_links(Tag.find_related(@tags[:related].to_a), :with_hover_highlight => include_tag_hover_highlight) %>
  </ul>
</div>

Remove duplicated key, fix boolean variable initialization.
Remove duplicated key, fix boolean variable initialization.
