Remove specialized '+' cursor behavior

tui_main.c

@@ -164,21 +164,12 @@ void tui_cursor_move_relative(Tui_cursor* tc, Usz field_h, Usz field_w,
 void draw_tui_cursor(WINDOW* win, Glyph const* gbuffer, Usz field_h,
                      Usz field_w, Usz ruler_spacing_y, Usz ruler_spacing_x,
                      Usz cursor_y, Usz cursor_x) {
+  (void)ruler_spacing_y;
+  (void)ruler_spacing_x;
   if (cursor_y >= field_h || cursor_x >= field_w)
     return;
   Glyph beneath = gbuffer[cursor_y * field_w + cursor_x];
-  char displayed;
-  if (beneath == '.') {
-    if (ruler_spacing_y != 0 && ruler_spacing_x != 0 &&
-        (cursor_y % ruler_spacing_y) == 0 &&
-        (cursor_x % ruler_spacing_x) == 0) {
-      displayed = '+';
-    } else {
-      displayed = '@';
-    }
-  } else {
-    displayed = beneath;
-  }
+  char displayed = beneath == '.' ? '@' : beneath;
   chtype ch =
       (chtype)(displayed | (A_reverse | A_bold | fg_bg(C_yellow, C_natural)));
   wmove(win, (int)cursor_y, (int)cursor_x);