Use cellar paths in tests

This lets `brew test` work when these are keg-only, etc. Also fix a
couple of typos and style things.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/Library/Formula/autoconf.rb b/Library/Formula/autoconf.rb
index 3121e235f..9683c5224 100644
--- a/Library/Formula/autoconf.rb
+++ b/Library/Formula/autoconf.rb
@@ -6,22 +6,22 @@ class Autoconf < Formula
   mirror 'http://ftp.gnu.org/gnu/autoconf/autoconf-2.68.tar.gz'
   md5 'c3b5247592ce694f7097873aa07d66fe'
 
+  if MacOS.xcode_version.to_f < 4.3 or File.file? "/usr/bin/autoconf"
+    keg_only "Xcode (up to and including 4.2) provides (a rather old) Autoconf."
+  end
+
   def patches
     # force autoreconf to look for and use our glibtoolize
     DATA
   end
 
-  if MacOS.xcode_version.to_f < 4.3 or File.file? "/usr/bin/autoconf"
-    keg_only "Xcode (up to and including 4.2) provides (a rather old) Autoconf."
-  end
-
   def install
     system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
     system "make install"
   end
 
   def test
-    system "#{HOMEBREW_PREFIX}/bin/autoconf --version"
+    system "#{bin}/autoconf --version"
   end
 end