# Ri IO -\> RuntimeError **URL:** \ **Category:** ruby-talk\ **Created:** [9 June 2004 21:13 UTC](https://rubytalk.org/t/ri-io-runtimeerror/12028 "2004-06-09T21:13:39Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Stephan\_Kamper3](https://avatars.discourse-cdn.com/v4/letter/s/d9b06d/32.png) [@Stephan\_Kamper3](https://rubytalk.org/u/Stephan_Kamper3)\ **Post date:** [9 June 2004 21:13 UTC](https://rubytalk.org/t/ri-io-runtimeerror/12028/1 "2004-06-09T21:13:39Z")
Hi all, I just noticed that ri fires a RuntimeError when called with IO \> ri IO -------------------------------------------------------------- Class: IO       Class +IO+ is the basis for all input and output in Ruby. An I/O       stream may be \_duplexed\_ (that is, bidirectional), and so may use       more than one native operating system stream.       Many of the examples in this section use class +File+, the only       standard subclass of +IO+. The two classes are closely associated.       As used in this section, \_portname\_ may take any of the following       forms. c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_formatter.rb:152:in `display\_list': unknown list type (RuntimeError)   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_formatter.rb:175:in `display\_flow\_item'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_formatter.rb:225:in `display\_flow'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_formatter.rb:224:in `each'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_formatter.rb:224:in `display\_flow'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_display.rb:268:in `display\_flow'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_display.rb:89:in `display\_class\_info'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_display.rb:77:in `page'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_display.rb:139:in `display\_class\_info'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_driver.rb:58:in `report\_class\_stuff'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_driver.rb:93:in `get\_info\_for'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_driver.rb:122:in `process\_args'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_driver.rb:121:in `each'   from c:/ruby/lib/ruby/1.8/rdoc/ri/ri\_driver.rb:121:in `process\_args'   from c:/ruby/bin/ri:21 This happens on Win98 as well as XP running the 1-click-installer version 1.8.1-13. Has anybody else experienced this behaviour? Happy rubying Stephan ---
**Author:** ![Dave\_Mail\_Archive](https://avatars.discourse-cdn.com/v4/letter/d/f04885/32.png) [@Dave\_Mail\_Archive](https://rubytalk.org/u/Dave_Mail_Archive)\ **Post date:** [10 June 2004 03:57 UTC](https://rubytalk.org/t/ri-io-runtimeerror/12028/2 "2004-06-10T03:57:31Z")
> Hi all, > > I just noticed that ri fires a RuntimeError when called with > IO ... > This happens on Win98 as well as XP running the 1-click-installer version 1.8.1-13. > > Has anybody else experienced this behaviour? Strange - I don't have a Window's box with ri installed, but I don't see the behavior here under OSX or Linux. Is it possible you have an old version lying around somewhere? Does anyone else see this? Cheers Dave > **···** > > On Jun 9, 2004, at 16:13, Stephan Kämper wrote: ---
**Author:** ![Kent\_S2](https://avatars.discourse-cdn.com/v4/letter/k/c6cbf5/32.png) [@Kent\_S2](https://rubytalk.org/u/Kent_S2)\ **Post date:** [10 June 2004 06:16 UTC](https://rubytalk.org/t/ri-io-runtimeerror/12028/3 "2004-06-10T06:16:56Z")
I see the same exception in my WinXP box. After poking around, I can only guess that Ruby Windows Installer build 13 comes with the broken yaml library which unmarshals Symbol instances as plain strings. Cheers, Kent. > **···** > > On Jun 9, 2004, at 11:57 PM, Dave Thomas wrote: > > > On Jun 9, 2004, at 16:13, Stephan Kämper wrote: > > > > > Hi all, > > > > > > I just noticed that ri fires a RuntimeError when called with > > > IO > > > > ... > > > > > This happens on Win98 as well as XP running the 1-click-installer version 1.8.1-13. > > > > > > Has anybody else experienced this behaviour? > > > > Strange - I don't have a Window's box with ri installed, but I don't see the behavior here under OSX or Linux. Is it possible you have an old version lying around somewhere? Does anyone else see this? > > > > Cheers > > > > Dave ---
**Author:** ![Stephan\_Kamper3](https://avatars.discourse-cdn.com/v4/letter/s/d9b06d/32.png) [@Stephan\_Kamper3](https://rubytalk.org/u/Stephan_Kamper3)\ **Post date:** [10 June 2004 09:43 UTC](https://rubytalk.org/t/ri-io-runtimeerror/12028/4 "2004-06-10T09:43:38Z")
Hi Dave, Dave Thomas wrote: > Strange - I don't have a Window's box with ri installed, but I don't see the behavior here under OSX or Linux. Is it possible you have an old version lying around somewhere? I really don't think so; it's a brand new PC and that was the first installation of, well, of everything including the OS, Ruby and everything else. Happy rubying Stephan > **···** > > > On Jun 9, 2004, at 16:13, Stephan Kämper wrote: ---
**Author:** ![Jim\_Menard3](https://avatars.discourse-cdn.com/v4/letter/j/d6d6ee/32.png) [@Jim\_Menard3](https://rubytalk.org/u/Jim_Menard3)\ **Post date:** [10 June 2004 11:45 UTC](https://rubytalk.org/t/ri-io-runtimeerror/12028/5 "2004-06-10T11:45:45Z")
Dave Thomas writes: > \> Hi all, > \> > \> I just noticed that ri fires a RuntimeError when called with > \> IO > \> > ... > > \> This happens on Win98 as well as XP running the 1-click-installer > \> version 1.8.1-13. > \> > \> Has anybody else experienced this behaviour? > > Strange - I don't have a Window's box with ri installed, but I don't > see the behavior here under OSX or Linux. Is it possible you have an > old version lying around somewhere? Does anyone else see this? \ Me, too. XP Pro, standard ruby 1.8.1 installation. If it matters, I ran ri under both a DOS command line window and a Cygwin window. \ Jim > **···** > > > On Jun 9, 2004, at 16:13, Stephan Kämper wrote: > > -- > Jim Menard, jimm@io.com, [http://www.io.com/~jimm/](http://www.io.com/~jimm/) > "The theory of computation states that all automatons can be emulated by a > Turing machine. I have a less abstract but more practical motto: If you can > do it on Intel, you can do it damn near anywhere!" -- Eugene O'Neil