Info Catalog elisp: Information from Markers elisp: Markers elisp: Moving Markers

elisp: Marker Insertion Types

 
 30.5 Marker Insertion Types
 ===========================
 
 When you insert text directly at the place where a marker points, there
 are two possible ways to relocate that marker: it can point before the
 inserted text, or point after it.  You can specify which one a given
 marker should do by setting its “insertion type”.  Note that use of
 ‘insert-before-markers’ ignores markers’ insertion types, always
 relocating a marker to point after the inserted text.
 
  -- Function: set-marker-insertion-type marker type
      This function sets the insertion type of marker MARKER to TYPE.  If
      TYPE is ‘t’, MARKER will advance when text is inserted at its
      position.  If TYPE is ‘nil’, MARKER does not advance when text is
      inserted there.
 
  -- Function: marker-insertion-type marker
      This function reports the current insertion type of MARKER.
 
    All functions that create markers without accepting an argument that
 specifies the insertion type, create them with insertion type ‘nil’
 (Creating Markers).  Also, the mark has, by default, insertion
 type ‘nil’.
 

Info Catalog elisp: Information from Markers elisp: Markers elisp: Moving Markers