# \[Bug #1503\] -Ku$B$r$D$1$?;~!"(B/\[#{s}\]/n $B$H(B Regexp.new("\[#{s}\]",nil,"n") $B$G\<B9T7k2L$,0\[$J

**URL:** <https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538>\
**Category:** Development\
**Created:** [May 22, 2009, 5:08am UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538 "2009-05-22T05:08:05Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [May 22, 2009, 5:08am UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/1 "2009-05-22T05:08:05Z")

</div>

Bug #1503: -Kue$B$r$D$1$?;~!“e(B/[#{s}]/n e$B$He(B  
Regexp.new(”[#{s}]",nil,“n”) e$B$G\<B9T7k2L$,0[$J$ke(B  
[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)

e$B5/I\<\<Te(B: sinnichi eguchi  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
ruby -v: ruby 1.9.2dev (2009-05-21 trunk 23511) [i686-linux]

/[#{s}]/n e$B$He(B Regexp.new(“[#{s}]”,nil,“n”)  
e$B$G\<B9T7k2L$,0[$J$j$^$9!#e(B

e$B2\<5-$,%5%s%W%k%3!\<%I$N\<B9T7k2L$K$J$j$^$9!#e(B  
e$B0lItJ8;z2=$1$bH/@8$7$F$$$^$9$N$G!"$=$NItJ,$K$D$$$F$O!V!|!W$GCV49$7$F$^$9!#e(B

$ ruby -v -Ku main.rb  
ruby 1.9.2dev (2009-05-21 trunk 23511) [i686-linux]  
main.rb:3: warning: ambiguous first argument; put parentheses or even  
spaces  
main.rb:10: warning: ambiguous first argument; put parentheses or even  
spaces  
/[\x00-\x1f\x7f-\xff]/  
/[\x00-\x1F\x7F-e$B!|e(B]/  
main.rb:10:in `': invalid multibyte character (ArgumentError)

# e$B;29M$^$G$Ke(B-Kue$B$r$D$1$J$$\>l9ge(B

$ ruby -v main.rb  
ruby 1.9.2dev (2009-05-21 trunk 23511) [i686-linux]  
main.rb:3: warning: ambiguous first argument; put parentheses or even  
spaces  
main.rb:10: warning: ambiguous first argument; put parentheses or even  
spaces  
/[\x00-\x1f\x7f-\xff]/  
/[\x00-\x1F\x7F-e$B!|e(B]/  
/[\x00-\x1F\x7F-e$B!|e(B]/

# 

e$B$D$$$G$Ke(BNetBeanse$BAH$_9~$_$Ne(BJRubye$B$r;HMQ$7$?\>l9g$N7k2L$K$D$$$F$b5-=R$7$F$\*$-$^$9!#e(B  
$ ~/netbeans-6.7beta/ruby2/jruby-1.2.0/bin/jruby -v -Ku main.rb  
jruby 1.2.0 (ruby 1.8.6 patchlevel 287) (2009-04-24 rev 6586)  
[i386-java]  
main.rb:3 warning: Ambiguous first argument; make sure.  
main.rb:10 warning: Ambiguous first argument; make sure.  
/[\x00-\x1f\x7f-\xff]/n  
/[\000-\037\177-\377]/n  
/[\000-\037\177-\377]/n

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [May 22, 2009, 12:39pm UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/2 "2009-05-22T12:39:49Z")

</div>

e$B%A%1%C%He(B #1503 e$B$,99?7$5$l$^$7$?!#e(B (by Yui NARUSE)

e$B%9%F!\<%?%9e(B Opene$B$+$ie(BRejectede$B$KJQ99e(B

e$B$@$+$ie(Bmagic commente$B$r=q$1$H2?EY!J#r#ye(B

## -Kue$B$NM-L5$Ge(Bmain.rbe$B$Ne(Bscript encodinge$B$,JQ2=$9$k$N$,860x$G$9!#e(B

[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [May 22, 2009, 4:34pm UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/3 "2009-05-22T16:34:14Z")

</div>

e$B%A%1%C%He(B #1503 e$B$,99?7$5$l$^$7$?!#e(B (by Yui NARUSE)

e$B$($'!";w$F$k$h$&$GF0$-$,0c$$$^$9!#e(B

Regexp.new(“[#{s}]”, nil, “n”)e$B$O!“e(B  
Regexp.new(”[\x00-\x1f\x7f-\xff]", nil, “n”)e$B$HF1$8F0$-$r$7$^$9!#e(B

e$B0lJ}!"e(B/[#{s}]/ne$B$Oe(B  
/-~~-\<\xFF\>/ne$B$H%=!\<%9%3!\<%I$K$=$N$^$^%j%F%i%k$G=q$/$N$H!"e(B  
e$B4pK\E\*$K$OF1$8$J$N$G!"EvA3e(Binvalid multibyte  
chare$B07$$$G%(%i!\<$K$J$j$^$9!#e(B~~

# 

## e$B$3$A$i$OK\Ev$K%j%F%i%k$G=q$/$H@55,I=8=$N%Q!\<%9$NA0$K%(%i!\<$,=P$A$c$$$^$9$,e(B

[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [May 22, 2009, 2:35pm UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/4 "2009-05-22T14:35:17Z")

</div>

e$B$O$8$a$^$7$F!#9\>8}$H?=$7$^$9!#e(B

e$BBP1~!"$"$j$,$H$&$4$6$$$^$9!#e(B  
e$B$H$$$&;v$O;d$N4\*0c$$$G!“e(B/[#{s}]/n e$B$Oe(B  
Regexp.new(”[#{s}]",nil,“n”) e$B$Ne(B  
syntax sugare$B$G$OL5$$$H$$$&;v$K$J$k$s$G$7$g$&$+e(B?  
e$B$=$l$H$b!";d$N=q$-J}$,0-$/$F8m2r$5$;$F$7$^$C$F$$$^$9e(B?

e$B!Ve(B-Kue$B$r$D$1$?;~!W$H$$$&$N$O!"$"$/$^$GH/@8\>r7o$Ge(B  
e$B8=\>]$O!Ve(B/[#{s}]/n e$B$He(B Regexp.new("[#{s}]",nil,“n”)  
e$B$G\<B9T7k2L$,0[$J$k!We(B  
e$B$H$$$&ItJ,$K$J$j$^$9!#e(B

e$B$?$H$($P2\<5-$N%3!\<%I$r\<B9T$9$k$He(Bp /[#{s}]/n e$B$Ge(B  
ArgumentErrore$B$K$J$j$^$9!#e(B

# -_- coding: utf-8 -_-

s = %Q|\x00-\x1f\x7f-\xff|  
p Regexp.new("[#{s}]",nil,“n”) # =\> /[\x00-\x1F\x7F-e$B!|e(B]/  
p /[#{s}]/n # =\> ArgumentError

e$B$b$7NI$1$l$P$4;XE&$$$?$@$-$?$$$N$G!"59$7$/$\*4j$$$7$^$9!#e(B

Yui NARUSE e$B$5$s$O=q$-$^$7$?e(B:

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [May 23, 2009, 12:18am UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/5 "2009-05-23T00:18:56Z")

</div>

e$B%A%1%C%He(B #1503 e$B$,99?7$5$l$^$7$?!#e(B (by sinnichi eguchi)

e$B$J$k$[$I!#e(B  
e$B$^$@2r$i$J$$ItJ,$,$“$j$^$9$,!”$b$&$7$P$i$/D4$Y$F$\_$Fe(B  
e$B$I$&$7$F$b2r$i$J$1$l$Pe(Bruby-liste$B$NJ}$G\<ALd$5$;$F$$$?$@$-$^$9!#e(B  
e$B$"$j$,$H$&$4$6$$$^$7$?!#e(B

* * *

[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [August 5, 2009, 5:31am UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/6 "2009-08-05T05:31:45Z")

</div>

e$B%A%1%C%He(B #1503 e$B$,99?7$5$l$^$7$?!#e(B (by Yui NARUSE)

/…/ne$B$O!"FbB&$NJ8;zNs$re(BASCII-8BITe$B$H$7$F$\_$J$7$F@55,I=8=$K$9$k%j%F%i%k$G$O$J$/!"e(B  
ASCII-8BITe$B$J@55,I=8=$r:n$k$?$a$N%j%F%i%k$J$N$,:,K\E\*$JM}M3$G$9!#e(B

e$B$h$C$F!"$=$b$=$b$NF05!$H$7$F!“e(B/e$B$“e(B/ne$B$H$$$C$?=q$-J}$O$d$a$5$;$?$$$H;W$C$F$$$^$9!#e(B  
e$BM}M3$O!”$=$N@55,I=8=$,=q$+$l$?%=!\<%9%3!\<%I$Ne(Bencodinge$B$,JQ49$5$l$?\>l9g$K!“e(B  
e$B@8@.$5$l$k@55,I=8=$,0U?^$;$:$7$FJQ$o$k2DG=@-$,$”$k$+$i$G$9!#e(B  
e$B$^$?!”@h=R$Ne(BASCII-8BITe$B$J@55,I=8=%j%F%i%k$H$$$&\<q;]$K$?$$$7$F!"e(B  
e$BAG$NJ8;z$r=q$+$l$k$N$O$3$l$KH?$7$^$9!#e(B

e$B\<!$Ke(B/#{“foo”}/e$B$N$h$&$KKd$a9~$`$b$N$,%j%F%i%k$N\>l9g!"e(B  
e$B$3$N%3!\<%I$O%Q!\<%5%l%Y%k$Ge(B/foo/e$B$N$h$&$K!“e(B1e$B$D$N%j%F%i%k$KCV$-49$($i$l$F$$$^$9!#e(B  
e$B$D$^$j!”\<B9T;~$K$3$Ne(B2e$B$D$O6hJL$9$k$3$H$,$G$-$J$$$N$G!“0z$-$:$i$l$F%(%i!\<$,=P$^$9!#e(B  
e$B$b$C$H$b!”$?$H$(6hJL$G$-$?$H$7$F$b$3$N$h$&$JJ}K!$G2sHr$G$-$k$h$&$J!"e(B  
e$B$$$+$K$b%P%C%I%N%&%O%&E\*$J5sF0$O5v$5$J$$$G$7$g$&!#e(B

## e$B$5$F!“$d$C$HK\Bj$G$9!#e(B /#{s}/ne$B$He(B2e$BHVL$N0c$$$OKd$a9~$`$b$N$,%j%F%i%k$+JQ?t$+$N0c$$$G$9!#e(B e$B$3$N0c$$$,1F6A$9$k$3$H$b!“7k6I$OKd$a9~$\_\<0$G$”$C$F$b%j%F%i%k$N@8@.$J$N$GK\0U$G$O$”$j$^$;$s!#e(B e$B$?$@!“%(%i!\<%a%C%;!\<%8$OHyL/$K@h$N\>l9g$H$OJQ$($F$”$j$^$9!#e(B e$B$“$o$;$F!”!Ve(Binvalid multibyte character (ArgumentError)e$B!W$H$$$&%a%C%;!\<%8$b!"e(B RegexpError: /…/n has a non escaped non ASCII character in non ASCII-8BIT script e$B$KJQ$($F$$$^$9!#e(B

[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [August 5, 2009, 9:29am UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/7 "2009-08-05T09:29:59Z")

</div>

e$B%A%1%C%He(B #1503 e$B$,99?7$5$l$^$7$?!#e(B (by Takashi T.)

e$B$3$s$K$A$O!"e(Bsheepman e$B$G$9!#e(B

> e$B$=$b$=$b$NF05!$H$7$F!“e(B/e$B$“e(B/ne$B$H$$$C$?=q$-J}$O$d$a$5$;$?$$$H;W$C$F$$$^$9!#e(B  
> e$BM}M3$O!”$=$N@55,I=8=$,=q$+$l$?%=!\<%9%3!\<%I$Ne(Bencodinge$B$,JQ49$5$l$?\>l9g$K!“e(B  
> e$B@8@.$5$l$k@55,I=8=$,0U?^$;$:$7$FJQ$o$k2DG=@-$,$”$k$+$i$G$9!#e(B  
> e$B$^$?!”@h=R$Ne(BASCII-8BITe$B$J@55,I=8=%j%F%i%k$H$$$&\<q;]$K$?$$$7$F!"e(B  
> e$BAG$NJ8;z$r=q$+$l$k$N$O$3$l$KH?$7$^$9!#e(B

## e$B$J$k$[$IG\<F@$7$^$7$?!#$=$N$h$&$J;vBV$O9M$($F$$$^$;$s$G$7$?!#e(B e$B@bL@$"$j$,$H$&$4$6$$$^$9!#e(B

[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)

---

<div class="post-metadata">

**Author:** ![sinnichi\_eguchi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@sinnichi\_eguchi](https://www.ruby-forum.com/u/sinnichi_eguchi)\
**Post date:** [August 1, 2009, 10:08am UTC](https://www.ruby-forum.com/t/bug-1503-ku-b-r-d-1-b-s-n-b-h-b-regexp-new-s-nil-n-b-g-b9t7k2l-0-j/168538/8 "2009-08-01T10:08:55Z")

</div>

e$B%A%1%C%He(B #1503 e$B$,99?7$5$l$^$7$?!#e(B (by Takashi T.)

e$B$3$s$K$A$O!"e(Bsheepman e$B$G$9!#e(B

> e$B0lJ}!"e(B/[#{s}]/ne$B$Oe(B  
> /-~~-\<\xFF\>/ne$B$H%=!\<%9%3!\<%I$K$=$N$^$^%j%F%i%k$G=q$/$N$H!"e(B  
> e$B4pK\E\*$K$OF1$8$J$N$G!"EvA3e(Binvalid multibyte chare$B07$$$G%(%i!\<$K$J$j$^$9!#e(B~~

e$B%(%s%3!\<%G%#%s%0$,E,@Z$K@_Dj$5$l$F$$$l$P!"$?$H$(%9%/%j%W%H%(%s%3!\<%G%#%s%0$He(B  
e$B0[$J$C$F$$$F$bLdBj$J$$$_$?$$$G$9!#$3$NNc$N\>l9g!"e(Bs  
e$B$N%(%s%3!\<%G%#%s%0$,e(B  
ASCII-8BIT e$B$J$ie(B ok e$B$N$h$&$G$9!#e(B

$ cat e02.rb

# coding: euc-jp

s = “\x00-\x1f\x7f-\xff”.force\_encoding(“ASCII-8BIT”)  
p /[#{s}]/.encoding  
p /[#{s}]/n.encoding

$ ruby-1.9 -v  
ruby 1.9.2dev (2009-08-01 trunk 24343) [i686-linux]

$ ruby-1.9 e02.rb  
#Encoding:ASCII-8BIT  
#Encoding:ASCII-8BIT

e$B$3$3$+$i$,\<ALd$G$9!#e(B

/#{s}/n e$B$Oe(B /#{s.dup.force\_encoding(“ASCII-8BIT”)}/  
e$B$HF1$8F0:n$r$9$k$h$&$Ke(B  
e$B$7$F$bNI$$$h$&$K;W$($k$N$G$9$,!"$=$&$7$J$$M}M3$O$J$s$G$7$g$&$+e(B?  
e$B$D$^$j!Ve(BRegexp.new(s, nil, “n”) e$B$Oe(B  
Regexp.new(s.dup.force\_encoding(“ASCII-8BIT”))e$B$HF1$8$@$1$I!"e(B  
/#{s}/n e$B$Oe(B /#{s.dup.force\_encoding(“ASCII-8BIT”)}/  
e$B$HF1$8$G$O$J$$!WM}M3$,CN$j$?$$$G$9!#e(B

* * *

[http://redmine.ruby-lang.org/issues/show/1503](http://redmine.ruby-lang.org/issues/show/1503)