https://lists.gnu.org/archive/html/automake-patches/2018-03/msg00004.html Add a new "-B" option to request saving of the original file when install-sh is overwriting an existing file.
FYI, since I've replied to all the others now ... I don't have any objection to this change, but I'm not going to get to it tonight. Maybe tomorrow, will keep you posted. --thanks, karl.
