incorrect sed substitutions for backreferences

[rmyorston]

From upstream BusyBox Bugzilla (#8791):

  $cat myfile
  a
  b
  c
  $sed "s/\(.*\)/\1\1/" myfile
  a
  b
  c

it should be :

  $sed "s/\(.*\)/\1\1/" myfile
  aa
  bb
  cc

used once \1 worked as expected but when repeated it does not.

[rmyorston]

As I've mentioned in the upstream bug report the problem is that busybox-w32 keeps the CR of the CRLF line terminator and it ends up in the matched string. This seems wrong on Microsoft Windows and has been fixed in commit 3ebb829.