Johannes Schindelin [off-list ref] writes:
So what about
<<<<<<< This hunk contains =====
anythin
=======
Hello
=======
somethin else
>>>>>>> problem!
If you fix it, I think you should do it properly, and analyze the index.
I do not know offhand if analyzing the index is the right solution, but
your point is very valid. You need to know which ====== is the real one
to be able to properly flip sides of the conflict.
I however think detecting that we have this ambiguous hunk is easy, and
punting gracefully and not re-resolving in such a case is million times
better than producing random results that the users need to be worried
about.