$action->get_line_pre LINENUMBERS

Maps the line numbers after the action to those before the action was applied.

$action->get_line_post LINENUMBERS

Maps the line numbers before the action to those after the action was applied.

$action->commutes_with ACTION

This is a specialized implementation implementing the following commutation rules, for line-based actions only!

The following actions commute:

  delete + delete
  insert + nonoverlapping insert
  
  insert + disjunct delete

The following actions do not commute:

  insert + internal insert
  insert + overlapping delete

TODO

• Should be able to return list of actions instead of just one action.
• Implement insert_line and delete_line in terms of replace_line
• Implement joining of lines, for delete_left / delete_right, and maybe as a separate command too.
• Implement insert-lines-in-the-middle instead of only above or below the current line

AUTHOR

Written by Max Maischein <corion@cpan.org>

Copyright Max Maischein 2005,2006; All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

Zaphod