Kevin Ballard [off-list ref] writes:
The recursive merge strategy turns on rename detection but leaves the
rename score at the default. Add a strategy option to allow the user
to specify a rename score to use.
Sounds straightforward, except that Documentation/diff-options.txt seems
to call the number associated with -M "threshold", not "score". The title
of the patch incidentally says threshold as well ;-)
At the end-user level, this new option to merge-recursive has exactly the
same meaning as existing -M given to "diff" family; people would probably
want to see it made available as a synonym to "diff" family as well, no?