Integrate benburkert's interesting fixes + some test fixes

Gemfile

@@ -2,3 +2,5 @@ source "http://rubygems.org"
 
 # Specify your gem's dependencies in gpgme.gemspec
 gemspec
+
+gem 'rake'

Rakefile

@@ -8,17 +8,18 @@ require 'yard'
 
 desc "Re-compile the extensions"
 task :compile do
-  FileUtils.rm_f('gpgme_n.bundle')
-  FileUtils.rm_f('gpgme_n.o')
-  FileUtils.rm_f('Makefile')
+  FileUtils.rm_rf('tmp') if File.directory?('tmp')
+  mkdir 'tmp'
 
-  system "ruby extconf.rb"
-  system "make"
+  Dir.chdir('tmp') do
+    system "ruby #{File.dirname(__FILE__)}/ext/gpgme/extconf.rb"
+    system "make"
+  end
 end
 
 task :default => [:test]
 
-Rake::TestTask.new(:test) do |t|
+Rake::TestTask.new(:test => :compile) do |t|
   t.libs << 'test'
   t.pattern = "test/**/*_test.rb"
   t.verbose = true

lib/gpgme/key.rb

@@ -40,7 +40,7 @@ class << self
       #
       # @example
       #   GPGME::Key.find(:public, "[email protected]", :sign)
-      #   # => return the public keys that match mrsimo@exampl.com and are
+      #   # => return the public keys that match mrsimo@example.com and are
       #   #    capable of signing
       def find(secret, keys_or_names = nil, purposes = [])
         secret = (secret == :secret)
@@ -63,6 +63,26 @@ def find(secret, keys_or_names = nil, purposes = [])
         keys
       end
 
+      # Works similar as {.find}, however it restricts the way the keys are looked up.
+      # GPG has the issue that finding a key for [email protected], also returns a key
+      # for [email protected].
+      # This can be restricted by adding <> around the address: <[email protected]>.
+      # Hence {.find_exact} simply wraps <> around each email you passed to the method and delegates
+      # the rest to {.find}
+      #
+      # @example
+      #   GPGME::Key.find_exact(:public, "[email protected]")
+      #   # => return the public key of [email protected], but not for
+      #   #    [email protected]
+      def find_exact(secret, keys_or_names = nil, purposes = [])
+        keys_or_names = [""] if keys_or_names.nil? || (keys_or_names.is_a?(Array) && keys_or_names.empty?)
+        find(
+          secret,
+          [keys_or_names].flatten.collect{|k| if k =~ /.*@.*/ && !(k =~ /<.*@.*>/) then "<#{k}>" else k end },
+          purposes
+        )
+      end
+
       def get(fingerprint)
         Ctx.new do |ctx|
           ctx.get_key(fingerprint)

test/key_test.rb

@@ -53,6 +53,28 @@
       assert keys.empty?
     end
   end
+
+  describe :find_exact do
+    it "wraps an email address with angle brackets" do
+      GPGME::Key.expects(:find).with(:public,['<[email protected]>'],[])
+      GPGME::Key.find_exact(:public,'[email protected]')
+    end
+
+    it "wraps multiple email addresses with angle brackets" do
+      GPGME::Key.expects(:find).with(:public,['<[email protected]>','<[email protected]>'],[])
+      GPGME::Key.find_exact(:public,['[email protected]','[email protected]'])
+    end
+
+    it "does not touch other strings than email addresses" do
+      GPGME::Key.expects(:find).with(:public,['Bar Example'],[])
+      GPGME::Key.find_exact(:public,'Bar Example')
+    end
+
+    it "does the same in mixed mode" do
+      GPGME::Key.expects(:find).with(:public,['<[email protected]>','Foo Example'],[])
+      GPGME::Key.find_exact(:public,['[email protected]','Foo Example'])
+    end
+  end
 
   describe :export do
     # Testing the lazy way with expectations. I think tests in

test/test_helper.rb

@@ -1,4 +1,12 @@
 # -*- encoding: utf-8 -*-
+
+# include compiled gpgme_n.bundle
+tmp_dir = File.join(File.dirname(__FILE__), '..', 'tmp')
+$:.unshift(tmp_dir) if File.directory?(tmp_dir)
+
+# this interfers otherwise with our tests
+ENV.delete('GPG_AGENT_INFO')
+
 require 'rubygems'
 require 'bundler/setup'
 require 'minitest/autorun'
@@ -10,6 +18,7 @@
 
 require File.dirname(__FILE__) + "/support/resources"
 
+
 def import_keys
   KEYS.each do |key|
     import_key(key)