fix(events): triggered WinScrolled when only skipcol changed (#19972)

fix(events): trigger WinScrolled when only skipcol changed

vim-patch:9.0.0304: WinScrolled is not triggered when only skipcol changes

Problem:    WinScrolled is not triggered when only skipcol changes.
Solution:   Add w_last_skipcol and use it. (closes vim/vim#10998)
https://github.com/vim/vim/commit/670ab0334b536e12d84810de88e73b7bcb01346d

1 files changed, 2 insertions, 0 deletions

diff --git a/src/nvim/window.c b/src/nvim/window.c
index ffbb0fa27f..5b8a69f6eb 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -5362,6 +5362,7 @@ void may_trigger_winscrolled(void)
   win_T *wp = curwin;
   if (wp->w_last_topline != wp->w_topline
       || wp->w_last_leftcol != wp->w_leftcol
+      || wp->w_last_skipcol != wp->w_skipcol
       || wp->w_last_width != wp->w_width
       || wp->w_last_height != wp->w_height) {
     char winid[NUMBUFLEN];
@@ -5375,6 +5376,7 @@ void may_trigger_winscrolled(void)
     if (win_valid_any_tab(wp)) {
       wp->w_last_topline = wp->w_topline;
       wp->w_last_leftcol = wp->w_leftcol;
+      wp->w_last_skipcol = wp->w_skipcol;
       wp->w_last_width = wp->w_width;
       wp->w_last_height = wp->w_height;
     }