[O] org-publish report error cond: Unknown language ‘sh’ at line 2 in ‘ *temp*’

[stardiviner]

When org file use `#+begin_src sh` instead of `#+begin_src shell`. org-publish 
report error:

: cond: Unknown language ‘sh’ at line 2 in ‘ *temp*’

I'm sure I loaded (shell . t) babel language.

Here is my config:

,----
| (setq org-babel-load-languages
|       '((org . t)                       ; Org-mode
|         (shell . t)                     ; Shell Script
|         (calc . t)                      ; Calc
|         ))
| 
| ;;; [ ob-shell ]
| (require 'ob-shell)
| (add-to-list 'org-babel-load-languages '(shell . t))
| (org-babel-do-load-languages 'org-babel-load-languages 
org-babel-load-languages)
| (add-to-list 'org-babel-tangle-lang-exts '("shell" . "sh"))
`----


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