vim-patch:8.1.1071: cannot get composing characters from the screen

Problem:    Cannot get composing characters from the screen.
Solution:   Add screenchars() and screenstring(). (partly by Ozaki Kiichi,
            closes vim/vim#4059)
https://github.com/vim/vim/commit/2912abb3a2fd72074e3901c8ae1d4a77ce764675

1 files changed, 19 insertions, 0 deletions

diff --git a/src/nvim/testdir/view_util.vim b/src/nvim/testdir/view_util.vim
index 1def201a05..dd143c02c1 100644
--- a/src/nvim/testdir/view_util.vim
+++ b/src/nvim/testdir/view_util.vim
@@ -34,6 +34,25 @@ function! ScreenLines(lnum, width) abort
   return lines
 endfunction
 
+" Get text on the screen, including composing characters.
+" ScreenLines(lnum, width) or
+" ScreenLines([start, end], width)
+function! ScreenLinesUtf8(lnum, width) abort
+  redraw!
+  if type(a:lnum) == v:t_list
+    let start = a:lnum[0]
+    let end = a:lnum[1]
+  else
+    let start = a:lnum
+    let end = a:lnum
+  endif
+  let lines = []
+  for l in range(start, end)
+    let lines += [join(map(range(1, a:width), 'screenstring(l, v:val)'), '')]
+  endfor
+  return lines
+endfunction
+
 function! ScreenAttrs(lnum, width) abort
   redraw!
   if type(a:lnum) == v:t_list