Function: gnus-remove-if-not
gnus-remove-if-not is a function alias for seq-filter, defined in
seq.el.gz.
This function is obsolete since 27.1; use seq-filter instead.
Signature
(gnus-remove-if-not PRED SEQUENCE)
Aliases
hanja-filter (obsolete since 30.1)
gnus-remove-if-not (obsolete since 27.1)
rcirc-condition-filter (obsolete since 30.1)