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POWhy does my `ri` lack documentation of some built-in library?
 

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  1. POWhy does my `ri` lack documentation of some built-in library?
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    <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/6625631/nothing-known-about-when-trying-ri-stringupcase-ruby">Nothing known about… when trying ri String#upcase Ruby</a> </p> </blockquote> <p>The version info looks like this:</p> <pre><code> Hanfeis-MacBook-Pro-2:ruby ad9075$ rvm -v rvm 1.17.0 (stable) by Wayne E. Seguin &lt;wayneeseguin@gmail.com&gt;, Michal Papis &lt;mpapis@gmail.com&gt; [https://rvm.io/] Hanfeis-MacBook-Pro-2:ruby ad9075$ ruby -v ruby 1.9.3p327 (2012-11-10 revision 37606) [x86_64-darwin12.2.0] Hanfeis-MacBook-Pro-2:ruby ad9075$ ri -v ri 3.12 Hanfeis-MacBook-Pro-2:ruby ad9075$ ri Math Nothing known about Math </code></pre> <p>I tried to do <code>gem rdoc --all</code>, it gives some <code>NOTE</code> and after I execute this command, these library still can't be found by ri.</p> <pre><code>Hanfeis-MacBook-Pro-2:7w7l ad9075$ gem rdoc --all NOTE: Gem::SourceIndex.from_installed_gems is deprecated with no replacement. It will be removed on or after 2011-10-01. Gem::SourceIndex.from_installed_gems called from /Users/ad9075/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/commands/rdoc_command.rb:58. NOTE: Gem::SourceIndex.installed_spec_directories is deprecated, use Specification.dirs. It will be removed on or after 2011-11-01. Gem::SourceIndex.installed_spec_directories called from /Users/ad9075/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:47. NOTE: Gem::SourceIndex.from_gems_in is deprecated with no replacement. It will be removed on or after 2011-10-01. </code></pre> <p>Gem::SourceIndex.from_gems_in called from /Users/ad9075/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:47.</p> <p>When I try <code>ri Integer</code>, instead of returning the document of built-in <code>Integer</code>, it returns me the result lke this:</p> <pre><code>= Integer &lt; Object (from gem activesupport-3.2.9) ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ = Instance methods: month, months, multiple_of?, ordinalize, year, years </code></pre> <p>I think the problem might be that after I use rvm to switch to a new version of ruby. The <strong>ri</strong> is not configured well that it can't find the path of built-in functions and classes. Does anyone have ideas how to fix this?</p>
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    1. COThis might be the answer. I'll give a try. http://stackoverflow.com/questions/6625631/nothing-known-about-when-trying-ri-stringupcase-ruby
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    2. COFor me it's worse : `$ ri Integer` Nothing known about Integer `$ rvm docs generate all` Currently 'rvm docs ...' does not work with non-rvm rubies.
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