Elisp: Save narrow-to-region
Emacs has a
command. It lets users make the buffor show only the selected region, as if
the entire buffer is just that text.
This is convenient when you want to do some editing only in this region.
will make buffer show whole buffer again.
is also super useful
in elisp code.
However, when you command is done, you should return to the narrow region state of the user before
the command was called.
Emacs lisp provides
save-restriction for this purpose.
(save-restriction &rest BODY)
Execute BODY, saving and restoring user's
In elisp code, when you call
you almost always want to wrap it with
;; preserve user's narrow-to-region ;; useful when you want to narrow-to-region in your code to work in just that region (save-restriction (narrow-to-region pos1 pos2) ;; lisp code here )
(info "(elisp) Positions")