On Saturday, October 21, 2000, 8:31:23 AM, Jan wrote:
> JR: Ming Li, I must confess to being completely confused now.
Oh-oh.
> I thought the rules were divided by "ands" unless separated by
> the "|" command in which case "or" conditions would apply.
If you mean "within" a rule set, yes, you're right.
> And when an alternative was offered to a rule it was this
> rule *or* this alternative or this alternative, etc.
That's right!
> What's the difference between what I set up & what you set
> up?
Let's simplify it and see if it helps. Your original filter is like
this:
Rule move messages to folder trash
Strings Location Present
A recipient no
Alternatives
B recipient no
C recipient no
So logically it's
IF (not A) OR ((not B) AND (not C)) THEN move to trash
See? "OR" is used between rule sets (the main rule set and the
alternative rule set), while "AND" is used between the two rules in
the alternative rule sets.
Let's resolve it to:
IF (not A) OR (not (B OR C)) THEN move to trash
Here the first OR is the original one linking two rule sets, and
the second OR is because we take the "NOT" outside.
Let's further resolve it to:
IF not (A AND (B OR C)) THEN move to trash
and further:
IF (A AND (B OR C)) THEN DON'T move to trash
which is:
IF (A and B) OR (A and C) THEN DON'T move to trash
So what would stay (not moved to trash)? Answer: (A and B) OR (A and C)
Let's put your original signal strings and location back, and it becomes:
Recipient is ([EMAIL PROTECTED] AND [EMAIL PROTECTED]) OR
Recipient is ([EMAIL PROTECTED] AND Jan Rifkinson)
As you can see, the second part is likely to happen, while the first
part isn't.
Now let's see mine:
Rule move messages to folder trash
Strings Location Present
A recipient no
B recipient no
C recipient no
which is logically:
IF (not A) AND (not B) AND (not C) THEN move to trash
Note that all rules are linked with "AND" for they are in the
same rule set. Now let's resolve it to:
IF not (A OR B OR C) THEN move to trash
Further:
IF (A OR B OR C) THEN DON'T move to trash
which is:
IF (A OR B OR C) THEN DON'T move to trash
Putting back the original signal strings and location, and it's:
IF Recipient is ([EMAIL PROTECTED] or [EMAIL PROTECTED] or Jan Rifkinson)
THEN DON'T move to trash
Isn't that what you want?
> Rule move messages to folder trash
> Strings Location Present
> [EMAIL PROTECTED] | [EMAIL PROTECTED] | Jan Rifkinson recipient no
This is the most confusing part. On its face, it seems to mean:
NOT (A or B or C)
But in fact, TB interpret it as: (NOT A) or (NOT B) or (NOT C)
To avoid confusion, I suggest don't use the "|" together with "No"
in Presence. (Some would advice avoiding "|", period, which is a
fine suggestion. I personally use it, for it's convenient. But be
sure you know what TB would do with it.)
--
Best regards,
Ming-Li
The Bat! 1.47 Beta/7 | Win2k SP1
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