Hi -

I'm new to Ruby/gems, etc. I wanted to put autocompletion on my irb. I discovered http://eigenclass.org/hiki/fastri and followed directions (or thought I did) to install the fastri gem. The problem is that I keep getting the following error when I execute fastri-server. Client/server are both on my local machine.

fastri-server
<internal:gem_prelude>:249:in `push_gem_version_on_load_path': undefined method `<=>' for nil:NilClass (NoMethodError)
from <internal:gem_prelude>:14:in `gem'
from /home/eric/.gem/ruby/1.9.1/bin/fastri-server:18:in `<main>'

If I try to run fri I also get...

fri
<internal:gem_prelude>:249:in `push_gem_version_on_load_path': undefined method `<=>' for nil:NilClass (NoMethodError)
from <internal:gem_prelude>:14:in `gem'
from /home/eric/.gem/ruby/1.9.1/bin/fri:18:in `<main>'

It seems the problem may be consistent with trying to run any gem.

I'm running Ubuntu 8.10 (intrepid)


**********************************************************
Results of some attempts to solve the problem below...
**********************************************************
which ruby
/usr/local/bin/ruby
**********************************************************
which gem
/usr/local/bin/gem
**********************************************************
ruby -v
ruby 1.9.1p0 (2009-01-30 revision 21907) [i686-linux]
**********************************************************
gem environment
RubyGems Environment:
- RUBYGEMS VERSION: 1.3.2
- RUBY VERSION: 1.9.1 (2009-01-30 patchlevel 0) [i686-linux]
- INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/1.9.1
- RUBY EXECUTABLE: /usr/local/bin/ruby
- EXECUTABLE DIRECTORY: /usr/local/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86-linux
- GEM PATHS:
- /usr/local/lib/ruby/gems/1.9.1
- /home/eric/.gem/ruby/1.9.1
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://gems.rubyforge.org/
**********************************************************
gem install fastri
WARNING: Installing to ~/.gem since /usr/local/lib/ruby/gems/1.9.1 and
/usr/local/bin aren't both writable.
WARNING: You don't have /home/eric/.gem/ruby/1.9.1/bin in your PATH,
gem executables will not run.

...

Successfully installed fastri-0.3.1.1
1 gem installed
Installing ri documentation for fastri-0.3.1.1...
Updating class cache with 1405 classes...
Installing RDoc documentation for fastri-0.3.1.1...

...HERE THINGS SEEM OK EXCEPT FOR THE TWO WARNINGS ABOVE

**********************************************************
gem list

*** LOCAL GEMS ***

fastri (0.3.1.1)

...THIS CONFIRMS fastri INSTALLED BUT WHEN I TRY TO RUN...

**********************************************************
fastri-server
<internal:gem_prelude>:249:in `push_gem_version_on_load_path': undefined method `<=>' for nil:NilClass (NoMethodError)
from <internal:gem_prelude>:14:in `gem'
from /home/eric/.gem/ruby/1.9.1/bin/fastri-server:18:in `<main>'
**********************************************************
My path is:

PATH=~/.gem/:~/.gem/ruby/1.9.1/bin:/usr/local/lib/ruby/gems/1.9.1:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
**********************************************************
I've gone as far as to download ruby-1.9.1-p0 then ./configure, make, make install route but at this point I'm spinning my wheels. If anyone has any ideas I'd sure love to hear. Thanks very much...

Eric

OK - so it seems the issue has been seen in http://redmine.ruby-lang.org/issues/show/1163. Bug #1350 is related but 1163 supersedes.

This patch was created:
gem_prelude_raise_right_error.patch (1.2 KB) Kyosuke MOROHASHI, 02/15/2009 07:54 PM

Could anyone please tell me how to do a patch?

Thanks in advance,
Eric

If you want auto completion in irb, you don't need the fastri gem. That is meant for faster ri lookups.

You can either run this every time you start ruby or add it to your irbrc file:


Then, you can press Tab when you want it to complete anything. If that doesn't do anything, it means that there were more than one possible matches. To view all possible matches, you can press tab twice.