Info Catalog elisp: Marker Insertion Types elisp: Markers elisp: The Mark

elisp: Moving Markers

 
 30.6 Moving Marker Positions
 ============================
 
 This section describes how to change the position of an existing marker.
 When you do this, be sure you know whether the marker is used outside of
 your program, and, if so, what effects will result from moving
 it—otherwise, confusing things may happen in other parts of Emacs.
 
  -- Function: set-marker marker position &optional buffer
      This function moves MARKER to POSITION in BUFFER.  If BUFFER is not
      provided, it defaults to the current buffer.
 
      If POSITION is ‘nil’ or a marker that points nowhere, then MARKER
      is set to point nowhere.
 
      The value returned is MARKER.
 
           (setq m (point-marker))
                ⇒ #<marker at 4714 in markers.texi>
           (set-marker m 55)
                ⇒ #<marker at 55 in markers.texi>
           (setq b (get-buffer "foo"))
                ⇒ #<buffer foo>
           (set-marker m 0 b)
                ⇒ #<marker at 1 in foo>
 
  -- Function: move-marker marker position &optional buffer
      This is another name for ‘set-marker’.
 

Info Catalog elisp: Marker Insertion Types elisp: Markers elisp: The Mark