Yes, I just tested 'arc diff --edit --verbatim' and it does what I want, thanks! Thanks for the quick reply. I'd downgrade this ticket to just please add this to the documentation so that searches for words such as "summary" and "title" find the right thing. I did read the complete documentation (including arc help diff) before asking, and missed that "update some fields from the local commit message" meant "update title and summary".