[27769] Always use plain formatter for revision commits

https://community.openproject.com/wp/27769

app/helpers/repositories_helper.rb

@@ -40,6 +40,12 @@ module RepositoriesHelper
     end
   end
 
+  ##
+  # Format revision commits with plain formatter
+  def format_revision_text(commit_message)
+    format_text(commit_message, format: 'plain')
+  end
+
   def truncate_at_line_break(text, length = 255)
     if text
       text.gsub(%r{^(.{#{length}}[^\n]*)\n.+$}m, '\\1...')

app/views/repositories/_revisions.html.erb

@@ -128,7 +128,7 @@ See doc/COPYRIGHT.rdoc for more details.
                 <%=h changeset.author %>
               </td>
               <td class="comments">
-                <%= format_text(truncate_at_line_break(Changeset.to_utf8(changeset.comments, changeset.repository.repo_log_encoding))) %>
+                <%= format_revision_text(truncate_at_line_break(Changeset.to_utf8(changeset.comments, changeset.repository.repo_log_encoding))) %>
               </td>
             </tr>
             <% line_num += 1 %>

app/views/repositories/revision.html.erb

@@ -51,7 +51,7 @@ See doc/COPYRIGHT.rdoc for more details.
 <p><% if @changeset.scmid %>ID: <%= h(@changeset.scmid) %><br />
   <% end %>
   <span class="author"><%= authoring(@changeset.committed_on, @changeset.author) %></span></p>
-<%= format_text @changeset.comments %>
+<%= format_revision_text @changeset.comments %>
 <% if @changeset.work_packages.visible.any? %>
   <h3><%= l(:label_related_work_packages) %></h3>
   <ul>