>>254
こっちの方がシンプルですな。微妙に縮め。

use CGI":all";charset$c="EUC-JP";$w='\b(([A-Z][a-z]+){2,})';$f=script_name;$/=(
);($p)=(path_info||FrontPage)=~/$w/;request_method=~PO&!($m=param z)&&unlink$p;
open(F,$m?">$p":$p),eval{flock F,2},print F$m||=<F>;$_=pre(escapeHTML$m).hr.ul
map{li"".localtime((stat)[9]),$_}sort{-M$a<=>-M$b}grep/^$w$/&-f,<*>;s|$w|(!-f$1
&&$1).a{href,"$f/$1"},-f$1?$1:"?"|eg;put header,start_html(-title=>$p,lang,ja,
encoding,$c),h1($p),startform(0,"$f/$p"),p(textarea(z,$m,6,60),br,submit),
endform,hr,$_,end_html