No need to export interactive-mode variables

dotfiles/bash/post.bashrc

 }
 
 # and use to assemble own PS1
-export PS1=$(__bashum__mkps1)
-export PS2=$(__bashum__mkps2)
+PS1=$(__bashum__mkps1)
+PS2=$(__bashum__mkps2)
 
 
 __bashum__set_title() {