[Bill Meier <wmeier@xxxxxxxxxxx>]

On 9/27/2011 3:56 PM, Jeff Morriss wrote:
> Actually a quick test indicates that we only build the column info on
> the 2nd pass (for those frames which are currently displayed).
>
> In other words, if you've got 10,000 frames of which 25 are displayed in
> your Wireshark window, your dissector is called 10,000 times with
> check_col(COL_INFO)==0 and 25 times with check_col(COL_INFO)==1. As you
> scroll down the dissector is called again for the newly-visible frames
> with check_col(COL_INFO)==1. (It does appear that Wireshark does cache
> the column information; scrolling back or clicking on earlier packets
> does not result in the column info being rebuilt, even if the dissector
> is called again.)

Do I interpret the above to mean that the col_... fcns no longer need to 
be guaranteed to be called on the "first pass" ?