Merge branch 'master' into feature/svg-badge-template

* master: (363 commits)
  Added changelog item for issuable form dropdowns
  Add 'run tests' docs from GDK
  Bump gitlab_git to lazy load compare commits
  Add examples to repository files API (!5465)
  Ignore URLs starting with // (!5677)
  Add failing test for #7032
  Update timeago to shorter representation
  Add missing DOWNTIME constant to the AddTimestampsToMembersAgain migration
  Added guide about migrations and downtime
  Update CHANGELOG for 8.10.4
  Add a data migration to fix some missing timestamps in the members table (again)
  Move abilities by subject class to a dedicated method
  Remove unnecessary empty line after css var
  Set consistency in list text height css
  Add description to text/plain emails
  Fix Rename `add_users_into_project` and `projects_ids`
  fix spec
  Underscore variable to camelCase
  using shared path for project import uploads and refactored gitlab remove export worker
  Structure the development documentation
  ...

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/banzai/filter/relative_link_filter.rb b/lib/banzai/filter/relative_link_filter.rb
index 337fb50317d..46762d401fb 100644
--- a/lib/banzai/filter/relative_link_filter.rb
+++ b/lib/banzai/filter/relative_link_filter.rb
@@ -35,6 +35,7 @@ module Banzai
 
       def process_link_attr(html_attr)
         return if html_attr.blank?
+        return if html_attr.value.start_with?('//')
 
         uri = URI(html_attr.value)
         if uri.relative? && uri.path.present?
@@ -87,10 +88,13 @@ module Banzai
       def build_relative_path(path, request_path)
         return request_path if path.empty?
         return path unless request_path
+        return path[1..-1] if path.start_with?('/')
 
         parts = request_path.split('/')
         parts.pop if uri_type(request_path) != :tree
 
+        path.sub!(%r{\A\./}, '')
+
         while path.start_with?('../')
           parts.pop
           path.sub!('../', '')