'Is not empty (NULL)' - wrong?

i think the NULL is the description for empty and not for not empty,
but i'm not native

As I said above NULL is just a description for EMPTY.

with / some people may see a difference in their php brain.

empty(0) <=> TRUE
0 === NULL <=> FALSE

But this is not php its sql :)

I like (NOT NULL) but I just noticed that there are at least 4 occurances of the string that all need to be caught:

handlers/views_handler_filter_in_operator.inc:          'title' => t('Is not empty (NULL)'),
handlers/views_handler_filter_string.inc:          'title' => t('Is not empty (NULL)'),
handlers/views_handler_filter_many_to_one.inc:          'title' => t('Is not empty (NULL)'),
handlers/views_handler_filter_numeric.inc:          'title' => t('Is not empty (NULL)'),

I'm now convinced. This string makes more sense.

Committed to all 3 branches. Thanks!