Advanced Scoring Examples Advanced Scoring

7.15.3: Advanced Scoring Tips

The & and | logical operators do short-circuit logic. That is, they stop processing their arguments when it's clear what the result of the operation will be. For instance, if one of the arguments of an & evaluates to false, there's no point in evaluating the rest of the arguments. This means that you should put slow matches (`body', `header') last and quick matches (`from', `subject') first.

The indirection arguments (1- and so on) will make their arguments work on previous generations of the thread. If you say something like:

...
(1-
 (1-
  ("from" "lars")))
...

Then that means "score on the from header of the grandparent of the current article". An indirection is quite fast, but it's better to say:

(1-
 (&
  ("from" "Lars")
  ("subject" "Gnus")))

than it is to say:

(&
 (1- ("from" "Lars"))
 (1- ("subject" "Gnus")))

Advanced Scoring Examples

Advanced Scoring