fix(events): check for WinResized/WinScrolled in terminal mode (#27226)

src/nvim/terminal.c

@@ -93,6 +93,7 @@
 #include "nvim/types_defs.h"
 #include "nvim/ui.h"
 #include "nvim/vim_defs.h"
+#include "nvim/window.h"
 
 typedef struct {
   VimState state;
@@ -615,6 +616,8 @@ static int terminal_check(VimState *state)
     curbuf->b_locked--;
   }
 
+  may_trigger_win_scrolled_resized();
+
   if (need_maketitle) {  // Update title in terminal-mode. #7248
     maketitle();
   }

src/nvim/window.c

@@ -5367,7 +5367,7 @@ static int check_window_scroll_resize(int *size_count, win_T **first_scroll_win,
 
   FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
     // Skip floating windows that do not have a snapshot (usually because they are newly-created),
-    // as unlike split windows, creating floating windows do not cause other windows to resize.
+    // as unlike split windows, creating floating windows doesn't cause other windows to resize.
     if (wp->w_floating && wp->w_last_topline == 0) {
       wp->w_last_topline = wp->w_topline;
       wp->w_last_topfill = wp->w_topfill;

test/functional/autocmd/win_scrolled_resized_spec.lua

@@ -39,6 +39,23 @@ describe('WinResized', function()
     eq(2, eval('g:resized'))
     eq({ windows = { 1002, 1001, 1000 } }, eval('g:v_event'))
   end)
+
+  it('is triggered in terminal mode #21197 #27207', function()
+    exec([[
+      autocmd TermOpen * startinsert
+      let g:resized = 0
+      autocmd WinResized * let g:resized += 1
+    ]])
+    eq(0, eval('g:resized'))
+
+    command('vsplit term://')
+    eq({ mode = 't', blocking = false }, api.nvim_get_mode())
+    eq(1, eval('g:resized'))
+
+    command('split')
+    eq({ mode = 't', blocking = false }, api.nvim_get_mode())
+    eq(2, eval('g:resized'))
+  end)
 end)
 
 describe('WinScrolled', function()