Use local links in wiki pages when possible (#3276).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7558 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -572,13 +572,17 @@ module ApplicationHelper
           end
           # check if page exists
           wiki_page = link_project.wiki.find_page(page)
-          url = case options[:wiki_links]
+          url = if anchor.present? && wiki_page.present? && (obj.is_a?(WikiContent) || obj.is_a?(WikiContent::Version)) && obj.page == wiki_page
+            "##{anchor}"
+          else
+            case options[:wiki_links]
             when :local; "#{title}.html"
             when :anchor; "##{title}"   # used for single-file wiki export
             else
               wiki_page_id = page.present? ? Wiki.titleize(page) : nil
               url_for(:only_path => only_path, :controller => 'wiki', :action => 'show', :project_id => link_project, :id => wiki_page_id, :anchor => anchor)
             end
+          end
           link_to(h(title || page), url, :class => ('wiki-page' + (wiki_page ? '' : ' new')))
         else
           # project or wiki doesn't exist