$B0J2<$N$h$&$K(B "bb".tr_s("^a", "c") $B$,(B "cc" $B$K$J$j$^$9!#(B
% ./ruby -ve 'p "bb".tr_s("^a", "c")'
ruby 1.9.0 (2008-05-02 revision 16285) [i686-linux]
"cc"
1.8 $B$G$O(B "c" $B$K$J$j$^$9!#(B
% ruby-1.8 -ve 'p "bb".tr_s("^a", "c")'
ruby 1.8.7 (2008-05-02 patchlevel 5000) [i686-linux]
"c"
on 04.05.2008 08:18