refactor: pass the window to get_(side)scrolloff_value

to less rely on curwin

src/nvim/edit.c

@@ -594,7 +594,7 @@ static int insert_check(VimState *state)
 
     if (curwin->w_wcol < s->mincol - curbuf->b_p_ts
         && curwin->w_wrow == curwin->w_winrow
-        + curwin->w_height_inner - 1 - get_scrolloff_value()
+        + curwin->w_height_inner - 1 - get_scrolloff_value(curwin)
         && (curwin->w_cursor.lnum != curwin->w_topline
             || curwin->w_topfill > 0)) {
       if (curwin->w_topfill > 0) {

src/nvim/ex_docmd.c

@@ -7362,7 +7362,7 @@ static void ex_syncbind(exarg_T *eap)
     topline = curwin->w_topline;
     FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
       if (wp->w_p_scb && wp->w_buffer) {
-        y = wp->w_buffer->b_ml.ml_line_count - get_scrolloff_value();
+        y = wp->w_buffer->b_ml.ml_line_count - get_scrolloff_value(curwin);
         if (topline > y) {
           topline = y;
         }

src/nvim/move.c

@@ -368,7 +368,7 @@ static int scrolljump_value(void)
  */
 static bool check_top_offset(void)
 {
-  long so = get_scrolloff_value();
+  long so = get_scrolloff_value(curwin);
   if (curwin->w_cursor.lnum < curwin->w_topline + so
       || hasAnyFolding(curwin)
       ) {
@@ -729,8 +729,8 @@ void curs_columns(
   colnr_T startcol;
   colnr_T endcol;
   colnr_T prev_skipcol;
-  long so = get_scrolloff_value();
-  long siso = get_sidescrolloff_value();
+  long so = get_scrolloff_value(curwin);
+  long siso = get_sidescrolloff_value(curwin);
 
   /*
    * First make sure that w_topline is valid (after moving the cursor).
@@ -1231,7 +1231,7 @@ void scrolldown_clamp(void)
     end_row += curwin->w_cline_height - 1 -
                curwin->w_virtcol / curwin->w_width_inner;
   }
-  if (end_row < curwin->w_height_inner - get_scrolloff_value()) {
+  if (end_row < curwin->w_height_inner - get_scrolloff_value(curwin)) {
     if (can_fill) {
       ++curwin->w_topfill;
       check_topfill(curwin, true);
@@ -1271,7 +1271,7 @@ void scrollup_clamp(void)
     validate_virtcol();
     start_row -= curwin->w_virtcol / curwin->w_width_inner;
   }
-  if (start_row >= get_scrolloff_value()) {
+  if (start_row >= get_scrolloff_value(curwin)) {
     if (curwin->w_topfill > 0) {
       curwin->w_topfill--;
     } else {
@@ -1374,7 +1374,7 @@ void scroll_cursor_top(int min_scroll, int always)
   linenr_T old_topline = curwin->w_topline;
   linenr_T old_topfill = curwin->w_topfill;
   linenr_T new_topline;
-  int off = (int)get_scrolloff_value();
+  int off = (int)get_scrolloff_value(curwin);
 
   if (mouse_dragging > 0)
     off = mouse_dragging - 1;
@@ -1518,7 +1518,7 @@ void scroll_cursor_bot(int min_scroll, int set_topbot)
   int      old_valid      = curwin->w_valid;
   int      old_empty_rows = curwin->w_empty_rows;
   linenr_T cln            = curwin->w_cursor.lnum;  // Cursor Line Number
-  long so = get_scrolloff_value();
+  long so = get_scrolloff_value(curwin);
 
   if (set_topbot) {
     used = 0;
@@ -1751,8 +1751,8 @@ void cursor_correct(void)
    * How many lines we would like to have above/below the cursor depends on
    * whether the first/last line of the file is on screen.
    */
-  int above_wanted = (int)get_scrolloff_value();
-  int below_wanted = (int)get_scrolloff_value();
+  int above_wanted = (int)get_scrolloff_value(curwin);
+  int below_wanted = (int)get_scrolloff_value(curwin);
   if (mouse_dragging > 0) {
     above_wanted = mouse_dragging - 1;
     below_wanted = mouse_dragging - 1;
@@ -1848,7 +1848,7 @@ int onepage(Direction dir, long count)
   int retval = OK;
   lineoff_T loff;
   linenr_T old_topline = curwin->w_topline;
-  long so = get_scrolloff_value();
+  long so = get_scrolloff_value(curwin);
 
   if (curbuf->b_ml.ml_line_count == 1) {    /* nothing to do */
     beep_flush();

src/nvim/normal.c

@@ -2629,7 +2629,7 @@ do_mouse (
 
   /* Set global flag that we are extending the Visual area with mouse
    * dragging; temporarily minimize 'scrolloff'. */
-  if (VIsual_active && is_drag && get_scrolloff_value()) {
+  if (VIsual_active && is_drag && get_scrolloff_value(curwin)) {
     // In the very first line, allow scrolling one line
     if (mouse_row == 0) {
       mouse_dragging = 2;
@@ -4135,7 +4135,7 @@ void scroll_redraw(int up, long count)
     scrollup(count, true) :
     scrolldown(count, true);
 
-  if (get_scrolloff_value()) {
+  if (get_scrolloff_value(curwin)) {
     // Adjust the cursor position for 'scrolloff'.  Mark w_topline as
     // valid, otherwise the screen jumps back at the end of the file.
     cursor_correct();
@@ -4185,7 +4185,7 @@ static void nv_zet(cmdarg_T *cap)
   int old_fen = curwin->w_p_fen;
   bool undo = false;
 
-  int l_p_siso = (int)get_sidescrolloff_value();
+  int l_p_siso = (int)get_sidescrolloff_value(curwin);
   assert(l_p_siso <= INT_MAX);
 
   if (ascii_isdigit(nchar)) {

src/nvim/option.c

@@ -7159,20 +7159,20 @@ dict_T *get_winbuf_options(const int bufopt)
 
 /// Return the effective 'scrolloff' value for the current window, using the
 /// global value when appropriate.
-long get_scrolloff_value(void)
+long get_scrolloff_value(win_T *wp)
 {
   // Disallow scrolloff in terminal-mode. #11915
   if (State & TERM_FOCUS) {
     return 0;
   }
-  return curwin->w_p_so < 0 ? p_so : curwin->w_p_so;
+  return wp->w_p_so < 0 ? p_so : wp->w_p_so;
 }
 
 /// Return the effective 'sidescrolloff' value for the current window, using the
 /// global value when appropriate.
-long get_sidescrolloff_value(void)
+long get_sidescrolloff_value(win_T *wp)
 {
-  return curwin->w_p_siso < 0 ? p_siso : curwin->w_p_siso;
+  return wp->w_p_siso < 0 ? p_siso : wp->w_p_siso;
 }
 
 Dictionary get_vimoption(String name, Error *err)

src/nvim/screen.c

@@ -2820,10 +2820,12 @@ static int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow,
             n_extra = col + 1;
           } else {
             n_extra = grid->Columns - col;
+            ILOG("n_extra %d vs total widht %d", grid->Columns, col);
           }
           char_attr = win_hl_attr(wp, HLF_DED);
         }
         if (*p_sbr != NUL && need_showbreak) {
+          ILOG("need showbreak %d", need_showbreak);
           /* Draw 'showbreak' at the start of each broken line. */
           p_extra = p_sbr;
           c_extra = NUL;

src/nvim/window.c

@@ -5859,7 +5859,7 @@ void scroll_to_fraction(win_T *wp, int prev_height)
   }
 
   if (wp == curwin) {
-    if (get_scrolloff_value()) {
+    if (get_scrolloff_value(wp)) {
       update_topline();
     }
     curs_columns(false);        // validate w_wrow