Bug #1950: e$B7Y9p$,@5$7$/H/$C$;$i$l$J$$e(B
http://redmine.ruby-lang.org/issues/show/1950
e$B5/I<<Te(B: tadayoshi funaba
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Normal
ruby -v: ruby 1.9.2dev (2009-08-18 trunk 24578) [i686-linux]
a.rb e$B$K$"$k7Y9pBP>]$,!“e(Ba.rb
e$B<+BN$r;2>H$7$F$bH/$C$;$i$l$J$$$N$Ke(B b.rb e$B$Je(B
e$B$I$+$i4V@\E*$K8F$s$@>l9g$K$Oe(B (b.rb e$B$N$3$H$H$7$Fe(B)
e$BH/$C$;$i$l$k$3$H$,$”$k!#e(B
$ cat a.rb
/[aa]/ =~ ‘a’
$ cat b.rb
require ‘a’
$ ./ruby -w -I. a.rb
$ ./ruby -w -I. b.rb
b.rb:1: warning: character class has duplicated range: /[aa]/