Quick and dirty spike. Mocked up a working version, next up... code that is not terrible.

qwandry.rb

@@ -0,0 +1,38 @@
+#!/usr/bin/env ruby
+require 'optparse'
+
+puts "Qwandry; a qwestionable tool"
+opts = OptionParser.new do |opts|    
+  opts.banner = "Usage: qwandry [options] [type] repository-name"
+
+  opts.separator ""
+  opts.separator "Known Repositories:"
+  # ...
+end
+
+opts.parse! ARGV
+
+if ARGV.length != 1
+  puts opts
+  exit(-1)
+end
+
+load('repositories.rb')
+
+name = ARGV.pop
+candidates = []
+
+@repositories.each do |set, repos|
+  repos.each do |repo|
+    Dir["#{repo}/*"].each{|path| candidates << path if File.basename(path).start_with?(name)}
+  end
+end
+
+candidates.each_with_index do |path, index|
+  puts " #{index+1}. #{File.basename path}"
+end
+
+print ">> "
+index = gets
+path = candidates[index.to_i-1]
+`mate #{path}`

repositories.rb

@@ -0,0 +1,18 @@
+@repositories = Hash.new{|h,k| h[k] = []}
+
+def which(bin)
+  `which #{bin}`.chomp
+end
+
+def add(repository, path=nil)
+  if !path
+    path = repository
+    repository = 'default'
+  end
+
+  @repositories[repository] << path 
+end
+
+if which('ruby') == '/Users/adam/.rvm/rubies/ruby-1.9.1-p378/bin/ruby'
+  add 'gem', '/Users/adam/.rvm/gems/ruby-1.9.1-p378/gems/'
+end