fixed tmux_conf_new_window_retain_current_path and tmux_conf_new_pane_retain_current_path not working under Cygwin and MSYS2

.tmux.conf

@@ -1239,6 +1239,13 @@ run -b '[ -z "#{window_active}" ] && [ -z "#{version}" ] && tmux set display-tim
 #     esac
 #   fi
 #
+#   case "$_uname_s" in
+#     *CYGWIN*|*MSYS*)
+#       # prevent Cygwin and MSYS2 from cd-ing into home directory when evaluating /etc/profile
+#       tmux setenv -g CHERE_INVOKING 1
+#       ;;
+#   esac
+#
 #   _apply_overrides
 #   _apply_theme&
 #   _apply_bindings&