Can we detect which paragraphs are **not** in conflict, and possibly auto-resolve these or pre-select one side?
As of now, the TwoColConflict code just detects if a conflict happened, but not where. The resolution interface shows all paragraphs, not only the conflicting ones.
This came up while discussing T229217.
== Examples
Here are two cases, treated three different ways.
* In case "A", the "other" user has made a lot of little changes throughout the document, and "you" have only changed one paragraph.
** **A-1**: Current code. Show the full diff.
** **A-2**: Optimistic merge from yours into other.
** **A-3**: Optimistic merge from other into yours.
* In the case "B", the other user made a single change, and you made a lot of little changes throughout.
** **B-1**: Current code. Show the full diff.
** **B-2**: Optimistic merge from yours into other.
** **B-3**: Optimistic merge from other into yours.
TODO...