I love [1]orgmode for many things. [2]One [3]key [4]area is in
   [5]Literate [6]Programming where one incorporates code (and output)
   into the manual describing the code.

   [7]Org used to have a powerful if clumsy template expansion system. It
   was killed off in version 9.2 and somehow I missed the [8]news.
Change in the structure template expansion
Org 9.2 comes with a new template expansion mechanism, combining
org-insert-structure-template bound to C-c C-,.
If you customized the org-structure-template-alist option manually, you probably
 need to udpate it, see the docstring for accepted values.
If you prefer using previous patterns, e.g. <s, you can activate them again by r
equiring Org Tempo library:
(require 'org-tempo)
or add it to org-modules.
If you need complex templates, look at the tempo-define-template function or at
solutions like Yasnippet.

   None of the new options work any better or provide any more value than
   the old one. Forgot about finding out why the change was made. They do
   require me to redo 20 customized options, a task I do not relish.

   My frustration is in the lack of transparency behind the change. I
   follow the org-mode mailing list and I not only missed the whole thing
   but can't find the genesis.
     __________________________________________________________________

   My original entry is here: [9]Orgmode incompatible upgrade. It posted
   Wed, 03 Apr 2019 09:57:52 +0000.
   Filed under: emacs,

References

   1. https://orgmode.org/
   2. https://orgmode.org/worg/org-contrib/babel/how-to-use-Org-Babel-for-R.html
   3. https://orgmode.org/worg/org-contrib/babel/how-to-use-Org-Babel-for-R.html
   4. http://howardism.org/Technical/Emacs/literate-programming-tutorial.html
   5. http://cachestocaches.com/2018/6/org-literate-programming/
   6. https://www.offerzen.com/blog/literate-programming-empower-your-writing-with-emacs-org-mode
   7. https://orgmode.org/
   8. https://orgmode.org/Changes.html
   9. https://www.prjorgensen.com/?p=2699