# IRB.fail

**URL:** <https://www.ruby-forum.com/t/irb-fail/124387>\
**Category:** Development\
**Created:** [December 28, 2007, 7:10am UTC](https://www.ruby-forum.com/t/irb-fail/124387 "2007-12-28T07:10:08Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/77aa72/32.png) [@Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/u/Kazuhiro_NISHIYAMA)\
**Post date:** [December 28, 2007, 7:10am UTC](https://www.ruby-forum.com/t/irb-fail/124387/1 "2007-12-28T07:10:08Z")

</div>

e$B@\>;3OB9-$G$9!#e(B

irbe$B$GL58z$J%\*%W%7%g%s$r;XDj$7$?$H$-$KNc30$r$"$2$k$N$K\<:GT$7$Fe(B  
NoMethodErrore$B$K$J$C$F$$$^$9!#e(B

e$B860x$Oe(Be2mmap.rbe$B$Ne(B  
[http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/lib/e2mmap.rb?r1=11708&r2=14237](http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/lib/e2mmap.rb?r1=11708&r2=14237)  
e$B$Ge(Bpublice$B$Je(Bfaile$B$,$J$/$J$C$?1F6A$N$h$&$G$9!#e(B

% irb-trunk --hoge  
/home/kazu/opt/ruby-trunk/lib/ruby/1.9.0/irb/init.rb:186:in  
`parse_opts': private method `fail’ called for IRB:Module  
(NoMethodError)  
from /home/kazu/opt/ruby-trunk/lib/ruby/1.9.0/irb/init.rb:19:in  
`setup' from /home/kazu/opt/ruby-trunk/lib/ruby/1.9.0/irb.rb:54:in `start’  
from /home/kazu/opt/ruby-trunk/bin/irb-trunk:13:in `<main>' % irb18 --hoge /home/kazu/opt/ruby18/lib/ruby/1.8/irb/init.rb:188:in `parse\_opts’:  
e$B%9%$%C%Ae(B(–hoge)e$B$,J,$j$^$;$se(B (IRB::UnrecognizedSwitch)  
from /home/kazu/opt/ruby18/lib/ruby/1.8/irb/init.rb:19:in  
`setup' from /home/kazu/opt/ruby18/lib/ruby/1.8/irb.rb:54:in `start’  
from /home/kazu/opt/ruby18/bin/irb18:13  
%