@behaviour Pleroma.Web.ActivityPub.MRF
+ @have_re Regex.compile!("^re:[[:space:]]*", [:caseless])
def filter_by_summary(
%{"summary" => parent_summary} = parent,
%{"summary" => child_summary} = child
)
- when not is_nil(child_summary) and child_summary == parent_summary and
- byte_size(child_summary) > 1 do
- if not String.starts_with?(child_summary, "re:") do
+ when not is_nil(child_summary) and byte_size(child_summary) > 0 and
+ not is_nil(parent_summary) and byte_size(parent_summary) > 0 do
+ if (child_summary == parent_summary and not Regex.match?(@have_re, child_summary)) or
+ (Regex.match?(@have_re, parent_summary) &&
+ Regex.replace(@have_re, parent_summary, "") == child_summary) do
Map.put(child, "summary", "re: " <> child_summary)
else
child