;;; Code:
;;;###autoload
-(defun untabify (start end &optional arg)
+(defun untabify (start end &optional _arg)
"Convert all tabs in region to multiple spaces, preserving columns.
If called interactively with prefix ARG, convert for the entire
buffer.
\"^\\t* [ \\t]+\" is also useful, for tabifying only initial whitespace.")
;;;###autoload
-(defun tabify (start end &optional arg)
+(defun tabify (start end &optional _arg)
"Convert multiple spaces in region to tabs when possible.
A group of spaces is partially replaced by tabs
when this can be done without changing the column they end at.