Merge #9481 'vim-patch:8.1.0449,8.1.0450'

closes #9481

src/nvim/screen.c

@@ -1409,7 +1409,12 @@ static void win_update(win_T *wp)
       if (wp->w_p_rnu) {
         // 'relativenumber' set: The text doesn't need to be drawn, but
         // the number column nearly always does.
-        (void)win_line(wp, lnum, srow, wp->w_grid.Rows, true, true);
+        fold_count = foldedCount(wp, lnum, &win_foldinfo);
+        if (fold_count != 0) {
+          fold_line(wp, fold_count, &win_foldinfo, lnum, row);
+        } else {
+          (void)win_line(wp, lnum, srow, wp->w_grid.Rows, true, true);
+        }
       }
 
       // This line does not need to be drawn, advance to the next one.

src/nvim/testdir/test_fold.vim

@@ -704,6 +704,26 @@ func Test_fold_last_line_with_pagedown()
   enew!
 endfunc
 
+func Test_folds_with_rnu()
+  if !CanRunVimInTerminal()
+    return
+  endif
+
+  call writefile([
+	\ 'set fdm=marker rnu foldcolumn=2',
+	\ 'call setline(1, ["{{{1", "nline 1", "{{{1", "line 2"])',
+	\ ], 'Xtest_folds_with_rnu')
+  let buf = RunVimInTerminal('-S Xtest_folds_with_rnu', {})
+
+  call VerifyScreenDump(buf, 'Test_folds_with_rnu_01', {})
+  call term_sendkeys(buf, "j")
+  call VerifyScreenDump(buf, 'Test_folds_with_rnu_02', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+  call delete('Xtest_folds_with_rnu')
+endfunc
+
 func Test_folds_marker_in_comment2()
   new
   call setline(1, ['Lorem ipsum dolor sit', 'Lorem ipsum dolor sit', 'Lorem ipsum dolor sit'])

test/functional/ui/fold_spec.lua

@@ -1,8 +1,10 @@
 local helpers = require('test.functional.helpers')(after_each)
 local Screen = require('test.functional.ui.screen')
 local clear, feed, eq = helpers.clear, helpers.feed, helpers.eq
+local command = helpers.command
 local feed_command = helpers.feed_command
 local insert = helpers.insert
+local funcs = helpers.funcs
 local meths = helpers.meths
 
 describe("folded lines", function()
@@ -26,6 +28,26 @@ describe("folded lines", function()
     screen:detach()
   end)
 
+  it("highlighting with relative line numbers", function()
+    command("set relativenumber foldmethod=marker")
+    feed_command("set foldcolumn=2")
+    funcs.setline(1, '{{{1')
+    funcs.setline(2, 'line 1')
+    funcs.setline(3, '{{{1')
+    funcs.setline(4, 'line 2')
+    feed("j")
+    screen:expect([[
+      {7:+ }{5:  1 +--  2 lines: ·························}|
+      {7:+ }{5:  0 ^+--  2 lines: ·························}|
+      {7:  }{1:~                                          }|
+      {7:  }{1:~                                          }|
+      {7:  }{1:~                                          }|
+      {7:  }{1:~                                          }|
+      {7:  }{1:~                                          }|
+      :set foldcolumn=2                            |
+    ]])
+  end)
+
   it("works with multibyte text", function()
     -- Currently the only allowed value of 'maxcombine'
     eq(6, meths.get_option('maxcombine'))