fix(extmarks): redraw properly with scoped inline virt_text (#27569)

src/nvim/api/extmark.c

@@ -26,6 +26,7 @@
 #include "nvim/mbyte.h"
 #include "nvim/memline.h"
 #include "nvim/memory.h"
+#include "nvim/move.h"
 #include "nvim/pos_defs.h"
 #include "nvim/sign.h"
 
@@ -1244,7 +1245,7 @@ Boolean nvim_win_add_ns(Window window, Integer ns_id, Error *err)
 
   set_put(uint32_t, &win->w_ns_set, (uint32_t)ns_id);
 
-  redraw_all_later(UPD_NOT_VALID);  // TODO(altermo): only need to redraw the window
+  changed_window_setting_win(win);
 
   return true;
 }
@@ -1289,7 +1290,7 @@ Boolean nvim_win_remove_ns(Window window, Integer ns_id, Error *err)
 
   set_del_uint32_t(&win->w_ns_set, (uint32_t)ns_id);
 
-  redraw_later(win, UPD_NOT_VALID);
+  changed_window_setting_win(win);
 
   return true;
 }

src/nvim/plines.c

@@ -153,7 +153,8 @@ CharSize charsize_regular(CharsizeArg *csarg, char *const cur, colnr_T const vco
       if (mark.pos.row != csarg->virt_row || mark.pos.col > col) {
         break;
       } else if (mark.pos.col == col) {
-        if (!mt_end(mark) && mark.flags & (MT_FLAG_DECOR_VIRT_TEXT_INLINE)) {
+        if (!mt_end(mark) && (mark.flags & MT_FLAG_DECOR_VIRT_TEXT_INLINE)
+            && mt_scoped_in_win(mark, wp)) {
           DecorInline decor = mt_decor(mark);
           DecorVirtText *vt = decor.ext ? decor.data.ext.vt : NULL;
           while (vt) {

test/functional/ui/decorations_spec.lua

@@ -5577,6 +5577,29 @@ describe('decorations: window scoped', function()
     screen:expect(noextmarks)
   end)
 
+  it('redraws correctly with inline virt_text and wrapping', function()
+    set_scoped_extmark(0, 2, {
+      virt_text = {{ ('b'):rep(18), 'Comment' }},
+      virt_text_pos = 'inline'
+    })
+
+    screen:expect(noextmarks)
+
+    api.nvim_win_add_ns(0, ns)
+
+    screen:expect {
+      grid = [[
+      12{1:bbbbbbbbbbbbbbbbbb}|
+      34^5                 |
+      {2:~                   }|*7
+                          |
+    ]]}
+
+    api.nvim_win_remove_ns(0, ns)
+
+    screen:expect(noextmarks)
+  end)
+
   pending('sign_text', function()
     -- TODO(altermo): The window signcolumn width is calculated wrongly (when `signcolumn=auto`)
     -- This happens in function `win_redraw_signcols` on line containing `buf_meta_total(buf, kMTMetaSignText) > 0`