I found the function ~org-attach-set-inherit~ is missing. I noticed it in the Info document.
#+begin_quote ‘i’ (‘org-attach-set-inherit’) Set the ‘ATTACH_DIR_INHERIT’ property, so that children use the same directory for attachments as the parent does. #+end_quote -- [ stardiviner ] I try to make every word tell the meaning what I want to express. Blog: https://stardiviner.github.io/ IRC(freenode): stardiviner, Matrix: stardiviner GPG: F09F650D7D674819892591401B5DF1C95AE89AC3