ELisp: Enable Undo in Buffer

How to enable undo in output/temp buffer?

(buffer-enable-undo)

(buffer-disable-undo)

when writing elisp command, sometimes your command generates a output buffer. You can enable undo in that buffer, so user who might use that buffer will have undo.

to enable, just call buffer-enable-undo. Example:

(with-output-to-temp-buffer outputBuffer
  ;; something
  (switch-to-buffer outputBuffer)
  (buffer-enable-undo))

• Maintaining Undo (ELISP Manual)
• Undo (ELISP Manual)

2014-05-30 Thanks to jcs at irreal.org