GitLab

(w32_use_visible_system_caret): New user flag.
(syms_of_w32term): DEFVAR_BOOL it.  Initialize based on whether
Windows reports a screen reader running.
(x_update_window_begin): Hide the system caret.
(x_update_window_end): Show the system caret.
(x_display_and_set_cursor): Don't draw a cursor when
w32_use_visible_system_caret is set.  Do not adjust width.