Redmine

It may sometimes be useful to be able to reference a specific repository revision in one project from another project, for example if an issue is partially addressed by a change in a sub-project. Whereas a revision link can be done with !r1234, a cross-project link could be done with r:project:1234.

The following patch shows how this could be done with relatively little change (although I haven't done much testing as to whether or not it breaks any other linking):

  Index: app/helpers/application_helper.rb
  ===================================================================
  --- app/helpers/application_helper.rb   (revision 2717)
  +++ app/helpers/application_helper.rb   (working copy)
  @@ -385,15 +385,25 @@
       #     export:some/file -> Force the download of the file
       #  Forum messages:
       #     message#1218 -> Link to message with id 1218
  -    text = text.gsub(%r{([\s\(,\-\>]|^)(!)?(attachment|document|version|commit|source|export|message)?((#|r)(\d+)|(:)([^"\s<>][^\s<>]*?|"[^"]+?"))(?=(?=[[:punct:]]\W)|\s|<|$)}) do |m|
  -      leading, esc, prefix, sep, oid = $1, $2, $3, $5 || $7, $6 || $8
  +    text = text.gsub(%r{([\s\(,\-\>]|^)(!)?(attachment|document|version|commit|source|export|message)?((#|r)(\:[^\:\s]+\:)?(\d+)|(:)([^"\s<>][^\s<>]*?|"[^"]+?"))(?=(?=[[:punct:]]\W)|\s|<|$)}) do |m|
  +      leading, esc, prefix, sep, revproj, oid = $1, $2, $3, $5 || $8, $6, $7 || $9
         link = nil
         if esc.nil?
           if prefix.nil? && sep == 'r'
  -          if project && (changeset = project.changesets.find_by_revision(oid))
  -            link = link_to("r#{oid}", {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :rev => oid},
  +          if revproj.nil?
  +            if project && (changeset = project.changesets.find_by_revision(oid))
  +               link = link_to("r#{oid}", {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :rev => oid},
  +                                       :class => 'changeset',
  +                                       :title => truncate_single_line(changeset.comments, 100))
  +            end
  +          else
  +            revproj.gsub!(/\:/,'')
  +            link_project = Project.find_by_name(revproj) || Project.find_by_identifier(revproj)
  +            if link_project && (changeset = link_project.changesets.find_by_revision(oid))
  +              link = link_to("r:#{revproj}:#{oid}", {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => link_project, :rev => oid},
                                         :class => 'changeset',
                                         :title => truncate_single_line(changeset.comments, 100))
  +            end
             end
           elsif sep == '#'
             oid = oid.to_i