vifm: new homepage, add HEAD

Closes Homebrew/homebrew#40243.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Formula/vifm.rb

@@ -1,9 +1,14 @@
-require "formula"
-
 class Vifm < Formula
-  homepage "http://vifm.sourceforge.net/index.html"
+  homepage "http://vifm.info/"
   url "https://downloads.sourceforge.net/project/vifm/vifm/vifm-0.7.8.tar.bz2"
-  sha256 '5dfbb26c2038a58dcff12026dab736e29d547b4aa3ff5912e4d844064c9e7603'
+  mirror "https://github.com/vifm/vifm/releases/download/v0.7.8/vifm-0.7.8.tar.bz2"
+  sha256 "5dfbb26c2038a58dcff12026dab736e29d547b4aa3ff5912e4d844064c9e7603"
+
+  head do
+    url "https://github.com/vifm/vifm.git"
+    depends_on "automake" => :build
+    depends_on "autoconf" => :build
+  end
 
   bottle do
     sha1 "9c91b72060c3fb9abf43cecc1a2304816deb0334" => :yosemite
@@ -12,10 +17,18 @@ class Vifm < Formula
   end
 
   def install
-    system "./configure", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}"
-
+    args = %W[--disable-dependency-tracking --prefix=#{prefix}]
+    if build.head?
+      system "./autogen.sh", *args
+    else
+      system "./configure", *args
+    end
     ENV.deparallelize
-    system "make install"
+    system "make", "install"
+  end
+
+  test do
+    ENV["TERM"] = "xterm"
+    system bin/"vifm", "-c", ":q"
   end
 end