Subj : last_read and scan_ptr values
To : Nightfox
From : Digital Man
Date : Sun Mar 29 2015 11:47 pm
Re: last_read and scan_ptr values
By: Nightfox to Digital Man on Sat Mar 28 2015 09:17 am
> Re: last_read and scan_ptr values
> By: Nightfox to Digital Man on Fri Mar 27 2015 22:49:47
>
> Ni> If a new message is posted in a sub-board and that's the only message
> Ni> in the sub-board, it seems that scan_ptr and last_read would point to
> Ni> that message (is that correct?). If the currently logged-in user reads
> Ni> that message, then scan_ptr and last_read would remain unchanged since
> Ni> that's the only message in the sub-board. During a newscan, how can a
> Ni> JavaScript script determine whether the user has read that message
> Ni> (even if it wasn't written to the user - so the MSG_READ attribute
> Ni> wouldn't be set)?
>
> I've done a little bit more testing this morning, and now I'm wondering if 0
> is a meaningful value for scan_ptr? If I post a new message in an empty
> sub-board, it seems that the scan_ptr value for that sub-board is 0 until I
> read the message I posted.
Correct. Posting a message does not change any message pointers and the initial
pointer value will be 0 (no message).
> A related question is, will a message number
> (the 'number' property in a message header) ever be 0?
No. 0 is a special value indicating "no message". You can read about SMB
message numbers here:
http://synchro.net/docs/smb.html#Index File (*.SID)
digital man
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