[jQuery] Any official documentation for selectors extension?

[jQuery] Any official documentation for selectors extension?


Hello,
Following yesterday's discussion about my :containsExactly() filter,
I would like to know if there is any official documentation about
selectors extension.
I found this e-mail in the archives:
<http://www.mail-archive.com/discuss@jquery.com/msg15863.html>
This is the interesting extract:
"You can use the variables 'a' for the element being considered, 'm
[3]' for whatever was in parentheses in the selector (as in the '2'
in 'nth(2)' ), 'i' for the index of the element being considered, and
'r' for the whole array of elements."
The strange variable names and lack of official documentation make me
fear potential future changes in this "feature".
Any hint?
-Nicolas
--
Nicolas "Brush" HOIZEY
Clever Age : http://www.clever-age.com/
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