Info Catalog speedbar: Major Display Modes speedbar: Extending speedbar: Creating a display

speedbar: Tagging Extensions

 
 7.3 Tagging Extensions
 ======================
 
 It is possible to create new methods for tagging files in speedbar.  To
 do this, you need two basic functions, one function to fetch the tags
 from a buffer, the other to insert them below the filename.
 
  -- Function: my-fetch-dynamic-tags file
      Parse FILE for a list of tags.  Return the list, or ‘t’ if there
      was an error.
 
    The non-error return value can be anything, as long as it can be
 inserted by its paired function:
 
  -- Function: my-insert-tag-list level lst
      Insert a list of tags LST started at indentation level LEVEL.
      Creates buttons for each tag, and provides any other display
      information required.
 
    It is often useful to use ‘speedbar-create-tag-hierarchy’ on your
 token list.  See that function’s documentation for details on what it
 requires.
 
    Once these two functions are written, modify the variable
 ‘speedbar-dynamic-tags-function-list’ to include your parser at the
 beginning, like this:
 
      (add-to-list 'speedbar-dynamic-tags-function-list
                   '(my-fetch-dynamic-tags . my-insert-tag-list))
 
    If your parser is only good for a few types of files, make sure that
 it is either a buffer local modification, or that the tag generator
 returns ‘t’ for non valid buffers.
 

Info Catalog speedbar: Major Display Modes speedbar: Extending speedbar: Creating a display