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.

Tests for regexp with various magic settings.

STARTTEST
:so small.vim
:set nocompatible viminfo+=nviminfo
/^1
/a*b\{2}c\+/e
x/\Md\*e\{2}f\+/e
x:set nomagic
/g\*h\{2}i\+/e
x/\mj*k\{2}l\+/e
x/\vm*n{2}o+/e
x/\V^aa$
x:set magic
/\v(a)(b)\2\1\1/e
x/\V[ab]\(\[xy]\)\1
x:$
:set undolevels=100
dv?bar?
Yup:"
:?^1?,$w! test.out
:qa!
ENDTEST

1 a aa abb abbccc
2 d dd dee deefff
3 g gg ghh ghhiii
4 j jj jkk jkklll
5 m mm mnn mnnooo
6 x ^aa$ x
7 (a)(b) abbaa
8 axx [ab]xx
9 foobar