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(emacs-lisp-intro.info)insert-buffer code

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The Code for `insert-buffer'
----------------------------

   Here is the code:

     (defun insert-buffer (buffer)
       "Insert after point the contents of BUFFER.
     Puts mark after the inserted text.
     BUFFER may be a buffer or a buffer name."
       (interactive "*bInsert buffer: ")
       (or (bufferp buffer)
           (setq buffer (get-buffer buffer)))
       (let (start end newmark)
         (save-excursion
           (save-excursion
             (set-buffer buffer)
             (setq start (point-min) end (point-max)))
           (insert-buffer-substring buffer start end)
           (setq newmark (point)))
         (push-mark newmark)))

   As with other function definitions, you can use a template to see an
outline of the function:

     (defun insert-buffer (buffer)
       "DOCUMENTATION..."
       (interactive "*bInsert buffer: ")
       BODY...)