Elisp: Convert String to Buffer Text

If you got a long string, and need to insert or delete parts often, it's much more efficient to use buffer data type.

You can put into a buffer by using with-temp-buffer, then insert your string, process it, then use buffer-string to get the whole buffer content.

;; process string in a temp buffer

(with-temp-buffer
  (insert bigString)

  (goto-char (point-min))

  ;; code to manipulate string. eg delete char, etc

  ;; return whole buffer string
  (buffer-string))