nvi: New formula

Closes Homebrew/homebrew#3613.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/nvi.rb

@@ -0,0 +1,54 @@
+require 'formula'
+
+class Nvi < Formula
+  url 'http://www.kotnet.org/~skimo/nvi/devel/nvi-1.81.6.tar.bz2'
+  homepage 'https://sites.google.com/a/bostic.com/keithbostic/nvi'
+  md5 '88d1e23115ee9f2961186b62e55f5704'
+
+  depends_on 'berkeley-db'
+
+  skip_clean :all
+
+  def patches
+    DATA
+  end
+
+  def install
+    Dir.chdir('dist') do
+      system "./configure", "--prefix=#{prefix}",
+                            "--program-prefix=n",
+                            "--disable-dependency-tracking"
+      system "make"
+      ENV.j1
+      system "make install"
+    end
+  end
+end
+
+__END__
+diff --git a/ex/ex_script.c b/ex/ex_script.c
+index 31f42c1..8f0104a 100644
+--- a/ex/ex_script.c
++++ b/ex/ex_script.c
+@@ -12,6 +12,10 @@
+
+ #include "config.h"
+
++#ifdef __APPLE__
++#undef HAVE_SYS5_PTY
++#endif
++
+ #ifndef lint
+ static const char sccsid[] = "$Id: ex_script.c,v 10.38 2001/06/25 15:19:19 skimo Exp $ (Berkeley) $Date: 2001/06/25 15:19:19 $";
+ #endif /* not lint */
+@@ -45,6 +49,10 @@ static const char sccsid[] = "$Id: ex_script.c,v 10.38 2001/06/25 15:19:19 skimo
+ #include "script.h"
+ #include "pathnames.h"
+
++#ifdef __APPLE__
++#undef HAVE_SYS5_PTY
++#endif
++
+ static void	sscr_check __P((SCR *));
+ static int	sscr_getprompt __P((SCR *));
+ static int	sscr_init __P((SCR *));