I’m pleased to announce that Ruby Cross Reference has just been rolled
Have you ever wanted to know what exactly VALUE is? Wondered about
implementation? Tried to grep some obscure function? If your answer is
then RXR is for you!
Grep is from stone age. The Cross Reference, a tool which originally
to index Linux kernel sources, will instantly find declaration and all
to an identifier, converts tokens in source file to convenient links
has some full-text search capabilities.
Three versions of Ruby source tree are indexed: 1.8.7, 1.9.2 and HEAD,
from Ruby mirror on GitHub and updated daily.