@code{nnmail-split-header-length-limit} \e$B$N@)8B$h$jD9$$%X%C%@!<9T$O!"J,3d\e(B
\e$B4X?t$N=hM}BP>]$+$i=|30$5$l$^$9!#\e(B
-@vindex nnmail-mail-splitting-charset
@vindex nnmail-mail-splitting-decodes
-\e$B%G%#%U%)%k%H$G$OJ,3d$N=hM}$K$*$$$F%X%C%@!<$r\e(B @acronym{MIME} \e$B%G%3!<%I$9$k\e(B
-\e$B$N$G!"Hs\e(B-@acronym{ASCII} \e$BJ8;zNs$K9gCW$5$;$k$3$H$,$G$-$^$9!#JQ\e(B
-\e$B?t\e(B @code{nnmail-mail-splitting-charset} \e$B$G!"%G%3!<%I$9$k$H$-$N%G%#%U%)%k\e(B
-\e$B%H$NJ8;z%;%C%H$r;XDj$7$^$9!#\e(B
-@code{nnmail-mail-splitting-decodes} \e$B$r\e(B @code{nil} \e$B$KB+G{$9$k$3$H$K$h$C\e(B
-\e$B$F$^$C$?$/%G%3!<%I$r9T$J$o$J$$$h$&$K$9$k$3$H$,$G$-!"$=$l$O!"@8$N%X%C%@!<\e(B
-\e$B$N%G!<%?$r85$K5-;v$N9gCW$rH=Dj$7$?$$>l9g$K$OLrN)$D$G$7$g$&!#\e(B
+@vindex nnmail-mail-splitting-charset
+\e$B%G%#%U%)%k%H$G$OJ,3d$N=hM}$K$*$$$F%X%C%@!<$r\e(B @acronym{MIME} \e$B%G%3!<%I$7$J\e(B
+\e$B$$$N$G!"Hs\e(B-@acronym{ASCII} \e$BJ8;zNs$K9gCW$5$;$k$3$H$,$G$-$^$;$s!#$7$+$7!"\e(B
+\e$B@8$N%X%C%@!<$N%G!<%?$r85$K5-;v$N9gCW$rH=Dj$7$?$$>l9g$K$OLrN)$D$G$7$g$&!#\e(B
+\e$B$=$l$r2DG=$K$9$k$K$O\e(B @code{nnmail-mail-splitting-decodes} \e$BJQ?t\e(B
+\e$B$r\e(B @code{nil} \e$B$G$O$J$$CM$K@_Dj$7$F2<$5$$!#2C$(\e(B
+\e$B$F\e(B @code{nnmail-mail-splitting-decodes} \e$B$,\e(B @code{nil} \e$B$G$O$J$$>l9g$K!"\e(B
+@code{nnmail-mail-splitting-charset} \e$BJQ?t$NCM$,\e(B @acronym{MIME} \e$B$G$O$J$$\e(B
+\e$B%(%s%3!<%I$5$l$?J8;zNs\e(B (\e$BLuCm\e(B: @code{iso-2022-jp} \e$B$G%(%s%3!<%I$5$l$?@8$N\e(B
+\e$B%G!<%?$J$I\e(B) \e$B$r%G%3!<%I$9$k$?$a$K;H$o$l$^$9!#%G%#%U%)%k%H$O\e(B @code{nil} \e$B$G!"\e(B
+@acronym{MIME} \e$B$G$O$J$$%(%s%3!<%I$5$l$?J8;zNs$r%G%3!<%I$7$^$;$s!#$"$J$?\e(B
+\e$B$K$H$C$F9%ET9g$JCM$O$*$=$i$/\e(B @code{undecided} \e$B$+!"$^$?$O$"$J$?$,6=L#$,$"\e(B
+\e$B$k%a!<%k$GDL>o;H$o$l$F$$$kJ8;z%;%C%H\e(B (\e$BLuCm\e(B: \e$B<B:]$O\e(B coding system) \e$B$K$J$k\e(B
+\e$B$G$7$g$&!#\e(B
@vindex nnmail-resplit-incoming
\e$B%G%#%U%)%k%H$G$OF~$C$F$/$k$9$Y$F$N%a%C%;!<%8$KBP$7$FJ,3d$N=hM}$,9T$J$o$l\e(B