Expand set of quick-padding functions x4xx?()

dotfiles/config/bashum/main.bashrc

 alias reboot="echo -n . ; sync ; echo -n . ; sync ; echo -n . ; systemctl reboot"
 alias poweroff="echo -n . ; sync ; echo -n . ; sync ; echo -n . ; systemctl poweroff"
 
-x4x() {
+x4xx() {
     #
     # Pad text from primary clipboard with 4 spaces; save to C-C clipboard
     #
     # ...that is, for inclusion as Markdown verbatim text.
     #
-    xo | pad4 | xii
+    xop oo | pad4 | xop ii
+}
+
+x4x() {
+    #
+    # Pad text from primary clipboard with 4 spaces; save back
+    #
+    # ...that is, for inclusion as Markdown verbatim text.
+    #
+    xop -o | pad4 | xop i
 }
 
 BASHUM__RV_TMP="/tmp/bashum-rv"