have modified our concept as follows:

• the function "attach" extends the filename with a revision number
  
  • the syntax is e.g. perllogo.gif -> perllogo--r0001.gif
  • a new attachment starts with the revision number 0001; when the new file to be

attached (e.g. text.txt) is an deleted attachment of a former revision (e.g. text--r0017.txt

deleted in ExampleTopic r1.115) the new attachment will get the revision number --r0018

instead of --r0001

• • the attachment table shows the file name (perllogo.gif) and in a separate column

(title "--r") the file revision number (0001)

• the function "update"
  • increments the revision number of an existing attachment
  • repaces the attachment list entry with a new one
• a function "delete" removes the attachment entry in the topics attachment table
  • a new topic revision is generated for the topic
  • the attached file remains in the folder
  • the topic content is not modified otherwise
• there is an "undelete" option in the action column of predecessor revisions
  (only for those files which are not part of the attachment list of the latest revision)
  • a new topic revision is generated
  • the undeleted/restored attachment is reinserted into the attachment table
  • an Ooops dialog is started - it requests a new comment; a standard comment is

offered which explains the file history

As soon as we've tidied up the Perl code we will contact PeterThoeny to discuss the

integration procedure (to provide the diff files seems not to be a suitable way because

there other modifications which are not relevant for the community).

-- WolfgangSteinke and KamiloStankiewicz - 28 Jul 2000

Here is an example for an attach - update session:

A test page ...

Select the file to be attached (perllogo.gif) and upload it ...

The file is uploaded; a new revision (--r0001) is generated;
the revision number is shown in a file revision column;
a "delete" function is offered in

the action column (by selecting the "delete" function the file is removed from the table)

...

By selecting the "update" function the origin file name is offered ...

An upload is performed; a new topic revision is generated;
the revision number is incremented (--r0002);
the topic content is not modified;