re2 20150501

Closes Homebrew/homebrew#39654.

Signed-off-by: Xu Cheng <xucheng@me.com>

Formula/re2.rb

@@ -1,7 +1,8 @@
 class Re2 < Formula
   homepage "https://github.com/google/re2"
-  url "https://re2.googlecode.com/files/re2-20140304.tgz"
-  sha1 "f30dda8e530921b623c32aa58a5dabbe9157f6ca"
+  url "https://github.com/google/re2/archive/2015-05-01.tar.gz"
+  sha256 "35c890e61ea3f259940d236b84a5249afb698197897268868fd753ebe088c225"
+  version "20150501"
 
   head "https://github.com/google/re2.git"
 
@@ -16,11 +17,11 @@ class Re2 < Formula
   def install
     # https://code.google.com/p/re2/issues/detail?id=99
     if ENV.compiler != :clang || MacOS.version < :mavericks
-      inreplace 'libre2.symbols.darwin',
+      inreplace "libre2.symbols.darwin",
                 # operator<<(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, re2::StringPiece const&)
-                '__ZlsRNSt3__113basic_ostreamIcNS_11char_traitsIcEEEERKN3re211StringPieceE',
+                "__ZlsRNSt3__113basic_ostreamIcNS_11char_traitsIcEEEERKN3re211StringPieceE",
                 # operator<<(std::ostream&, re2::StringPiece const&)
-                '__ZlsRSoRKN3re211StringPieceE'
+                "__ZlsRSoRKN3re211StringPieceE"
     end
     system "make", "install", "prefix=#{prefix}"
     mv lib/"libre2.so.0.0.0", lib/"libre2.0.0.0.dylib"
@@ -28,4 +29,19 @@ class Re2 < Formula
     lib.install_symlink "libre2.0.0.0.dylib" => "libre2.0.dylib"
     lib.install_symlink "libre2.0.0.0.dylib" => "libre2.dylib"
   end
+
+  test do
+    (testpath/"test.cpp").write <<-EOS.undent
+      #include <re2/re2.h>
+      #include <assert.h>
+      int main() {
+        assert(!RE2::FullMatch("hello", "e"));
+        assert(RE2::PartialMatch("hello", "e"));
+        return 0;
+      }
+    EOS
+    system ENV.cxx, "-I#{include}", "-L#{lib}", "-lre2",
+           testpath/"test.cpp", "-o", "test"
+    system "./test"
+  end
 end