\e$B$H$-$K$3$N4X?t$r;H$&$H!"$3$NLLE]$J:n6H$r\e(B 1 \e$B%9%l%C%I$K$D$-\e(B 1 \e$B2s$-$j$G:Q$^\e(B
\e$B$9$3$H$,$G$-$^$9!#\e(B
-\e$B$3$N5!G=$rMxMQ$9$k$?$a$K$O!"$^$:JQ?t\e(B @code{nnmail-treat-duplicates} \e$B$NCM\e(B
-\e$B$rHs\e(B nil \e$B$K@_Dj$9$kI,MW$,$"$j$^$9\e(B (\e$B4{DjCM$N$^$^$J$iLdBj$"$j$^$;$s\e(B)\e$B!#$=$l\e(B
-\e$B$,$G$-$?$i\e(B @code{nnmail-split-fancy-with-parent} \e$B$r;H$C$F$_$F$/$@$5$$!#\e(B
-\e$B%3%m%s$r;H$C$F$3$s$JIw$K=q$-$^$9\e(B:
+\e$B$3$N5!G=$rMxMQ$9$k$?$a$K$O!"$^$:JQ\e(B
+\e$B?t\e(B @code{nnmail-treat-duplicates} \e$B$H\e(B @code{nnmail-cache-accepted-message-ids} \e$B$N\e(B
+\e$BCM$rHs\e(B nil \e$B$K@_Dj$9$kI,MW$,$"$j$^$9!#$=$l$,$G$-$?\e(B
+\e$B$i\e(B @code{nnmail-split-fancy-with-parent} \e$B$r;H$C$F$_$F$/$@$5$$!#%3%m%s$r\e(B
+\e$B;H$C$F$3$s$JIw$K=q$-$^$9\e(B:
@lisp
(setq nnmail-split-fancy
'(| (: nnmail-split-fancy-with-parent)
messages into the right group. With this function, you only have to do
it once per thread.
-To use this feature, you have to set @code{nnmail-treat-duplicates} to a
-non-nil value. And then you can include
-@code{nnmail-split-fancy-with-parent} using the colon feature, like so:
+To use this feature, you have to set @code{nnmail-treat-duplicates} and
+@code{nnmail-cache-accepted-message-ids} to a non-nil value. And then
+you can include @code{nnmail-split-fancy-with-parent} using the colon
+feature, like so:
@lisp
(setq nnmail-split-fancy
'(| (: nnmail-split-fancy-with-parent)