commit https://github.com/vim/vim/commit/6244a0fc29163ba1c734f92b55a89e01e6cf2a67 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 14 14:09:25 2016 +0200 patch 7.4.1729 Problem: The Perl interface cannot use 'print' operator for writing directly in standard IO. Solution: Add a minimal implementation of PerlIO Layer feature and try to use it for STDOUT/STDERR. (Damien)

start of testfile
testje1
	contents
	contents
	contents
end of testfile
start of testfile
testje1
	contents
	contents
	contents
end of testfile
start of testfile
testje3
	contents
	contents
	contents
end of testfile
start of testfile
testje2
	contents
	contents
	contents
end of testfile
start of testfile
testje1
	contents
	contents
	contents
end of testfile
Final line