vim-patch:9.1.0171: Small split-move related improvements

Problem:  small improvements can be made to split-move related
          functions.
Solution: apply them (Sean Dewar):

Some of these changes were already applied to Nvim.
Here are the ones which were missing:

- Improve some doc comments (frame_flatten should still work for non-current
  tabpages, despite the topframe check, which looks benign, though I'm unsure if
  it's still needed; see vim/vim#2467).

- f_win_splitmove should check_split_disallowed on wp, not targetwin, as that's
  what win_splitmove checks (though it's probably unnecessary to check
  b_locked_split at all; see vim/vim#14109, which I hope to get around to
  finishing at some point).

- Apply the winframe_restore comment changes, and remove win_comp_pos from after
  winframe_restore in win_splitmove, as it shouldn't be necessary (no need to
  remove it from nvim_win_set_config too, as it was already omitted).
  Move win_append after winframe_restore in win_splitmove to match Vim.

closes: vim/vim#14185

https://github.com/vim/vim/commit/5cac1a9bee0798d70a7fd80363a1f697759638e8

1 files changed, 25 insertions, 16 deletions

diff --git a/test/old/testdir/test_window_cmd.vim b/test/old/testdir/test_window_cmd.vim
index 9c34c15ff8..77de5edf8f 100644
--- a/test/old/testdir/test_window_cmd.vim
+++ b/test/old/testdir/test_window_cmd.vim
@@ -200,6 +200,20 @@ func Test_window_split_edit_bufnr()
   %bw!
 endfunc
 
+func s:win_layout_info() abort
+  return #{
+        \ layout: winlayout(),
+        \ pos_sizes: range(1, winnr('$'))
+        \            ->map({_, nr -> win_getid(nr)->getwininfo()[0]})
+        \            ->map({_, wininfo -> #{id: wininfo.winid,
+        \                                   row: wininfo.winrow,
+        \                                   col: wininfo.wincol,
+        \                                   width: wininfo.width,
+        \                                   height: wininfo.height}})
+        \            ->sort({a, b -> a.id - b.id})
+        \ }
+endfunc
+
 func Test_window_split_no_room()
   " N horizontal windows need >= 2*N + 1 lines:
   " - 1 line + 1 status line in each window
@@ -216,12 +230,10 @@ func Test_window_split_no_room()
 
   botright vsplit
   wincmd |
-  let layout = winlayout()
-  let restcmd = winrestcmd()
+  let info = s:win_layout_info()
   call assert_fails('wincmd J', 'E36:')
   call assert_fails('wincmd K', 'E36:')
-  call assert_equal(layout, winlayout())
-  call assert_equal(restcmd, winrestcmd())
+  call assert_equal(info, s:win_layout_info())
   only
 
   " N vertical windows need >= 2*(N - 1) + 1 columns:
@@ -238,18 +250,18 @@ func Test_window_split_no_room()
 
   split
   wincmd |
-  let layout = winlayout()
-  let restcmd = winrestcmd()
+  let info = s:win_layout_info()
   call assert_fails('wincmd H', 'E36:')
   call assert_fails('wincmd L', 'E36:')
-  call assert_equal(layout, winlayout())
-  call assert_equal(restcmd, winrestcmd())
+  call assert_equal(info, s:win_layout_info())
 
   " Check that the last statusline isn't lost.
   " Set its window's width to 2 for the test.
   wincmd j
   set laststatus=0 winminwidth=0
   vertical resize 2
+  " Update expected positions/sizes after the resize.  Layout is unchanged.
+  let info.pos_sizes = s:win_layout_info().pos_sizes
   set winminwidth&
   call setwinvar(winnr('k'), '&statusline', '@#')
   let last_stl_row = win_screenpos(0)[0] - 1
@@ -257,11 +269,9 @@ func Test_window_split_no_room()
   call assert_equal('@#|', GetScreenStr(last_stl_row))
   call assert_equal('~ |', GetScreenStr(&lines - &cmdheight))
 
-  let restcmd = winrestcmd()
   call assert_fails('wincmd H', 'E36:')
   call assert_fails('wincmd L', 'E36:')
-  call assert_equal(layout, winlayout())
-  call assert_equal(restcmd, winrestcmd())
+  call assert_equal(info, s:win_layout_info())
   call setwinvar(winnr('k'), '&statusline', '=-')
   redraw
   call assert_equal('=-|', GetScreenStr(last_stl_row))
@@ -1076,6 +1086,7 @@ func Test_win_splitmove()
   augroup WinSplitMove
     au!
     au WinEnter * ++once let s:triggered = v:true
+          \| call assert_fails('call win_splitmove(winnr(), winnr("$"))', 'E242:')
           \| call assert_fails('call win_splitmove(winnr("$"), winnr())', 'E242:')
   augroup END
   quit
@@ -1086,7 +1097,7 @@ func Test_win_splitmove()
   augroup WinSplitMove
     au!
     au BufHidden * ++once let s:triggered = v:true
-          \| call assert_fails('call win_splitmove(winnr("#"), winnr())', 'E1159:')
+          \| call assert_fails('call win_splitmove(winnr(), winnr("#"))', 'E1159:')
   augroup END
   hide
   call assert_equal(v:true, s:triggered)
@@ -2088,13 +2099,11 @@ func Test_autocmd_window_force_room()
     au BufEnter * ++once let s:triggered = v:true
                       \| call assert_equal('autocmd', win_gettype())
   augroup END
-  let layout = winlayout()
-  let restcmd = winrestcmd()
+  let info = s:win_layout_info()
   " bufload opening the autocommand window shouldn't give E36.
   call bufload('unload me')
   call assert_equal(v:true, s:triggered)
-  call assert_equal(winlayout(), layout)
-  call assert_equal(winrestcmd(), restcmd)
+  call assert_equal(info, s:win_layout_info())
 
   unlet! s:triggered
   au! AucmdWinForceRoom