mkmf: Unquote directory strings

* lib/mkmf.rb (find_executable0): On Windows, it is actually valid
  to surround individual PATH directory entries with double
  quotes. Remove these before joining the path as otherwise the
  literal quotes would become part of the path, resulting in the
  executable not to be found.  [Fix GH-1305]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54255 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/test/mkmf/test_find_executable.rb b/test/mkmf/test_find_executable.rb
index ad48e5193c..7ffc28ecc8 100644
--- a/test/mkmf/test_find_executable.rb
+++ b/test/mkmf/test_find_executable.rb
@@ -47,5 +47,12 @@ class TestMkmf
         assert_nil(result)
       end
     end
+
+    if /mingw|mswin/ =~ RUBY_PLATFORM
+      def test_quoted_path_on_windows
+        ENV["PATH"] = %["#{@tmpdir}"]
+        test_find_executable
+      end
+    end
   end
 end