patch 8.0.0388: filtering lines changes folds commit https://github.com/vim/vim/commit/1159b168dd94c1a25b4284c6544de385855df6f6 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Feb 28 21:53:56 2017 +0100 patch 8.0.0388: filtering lines changes folds Problem: filtering lines through "cat", without changing the line count, changes manual folds. Solution: Change how marks and folds are adjusted. (Matthew Malcomson, from neovim #6194.

manual 1 aa
-1
3 cc
1 aa
marker 2
1
1
0
indent 2
1
folding 9 ii
    3 cc
7 gg
8 hh
expr 2
1
2
0
	Test fdm=indent START
	line3
	line4
Test fdm=indent and :move bug END
line2