Hello Thomas,


Friday, January 07, 2000, 6:06:44 AM, you wrote:

> Hallo Tim,

> On Fri, 7 Jan 2000 13:23:22 +0000 GMT (07.01.2000, 21:23 +0800 GMT),
> Tim Fountain wrote:

TF>> So, I created a filter with the following in the strings field:

TF>>    'tim | acornarcade | iconbar | webmaster'

TF>> That checks the recipient field and has 'no' ticked for 'present'.
TF>> However, this filter doesn't seemt to be working as it moves /all/ my
TF>> emails to the Junk box. Any ideas?

> This ("|") is an "OR" operation. What you want is and "AND" operaton:
> IF .NOT.tim .AND. .NOT.acornarcade .AND. .NOT.iconbar .AND.
> .NOT.webmaster THEN move the mail to the spam folder.

This is an interesting point that I hadn't thought about.  What is the
logic structure in the filtering system?  For example, what you have
suggested is logically equivalent to what Tim has written IF:

 1. The Bat! first matches the search string, and returns True if one
    of them is found.  Then,
 2. Checks to see if presence should be there or not.  If presence is
    selected as no, then if (1) returned true, the filter should do
    nothing.  However, if (1) returned false, ie none of the strings
    were found, then the filter should do it's task.

What you have suggested ends up with the same truth table as the one
I've suggested, however, I don't know if that's how the Bat operates.
If someone could confirm this, I would appreciate your assistance.

> You do this as follows (I think):
> Make four Rules.

If I understand what Tim did, he only had one Rule and no
Alternatives, so these two should be logically equivalent (see above).

-- 
Thanks for writing
 Januk
 [EMAIL PROTECTED]

 Using The Bat! 1.38e
 under Windows 98 4.10 Build 2222  A 

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