abcde: fix redir expansion bug.

Closes Homebrew/legacy-homebrew#47643.
Closes Homebrew/legacy-homebrew#47644.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

Formula/abcde.rb

@@ -4,6 +4,7 @@ class Abcde < Formula
   url "http://abcde.einval.com/download/abcde-2.7.1.tar.gz"
   mirror "https://mirrors.ocf.berkeley.edu/debian/pool/main/a/abcde/abcde_2.7.1.orig.tar.gz"
   sha256 "3401e39785b20edee843d4d875b47d2b559f764681c482c4491a8c8ba605f250"
+  revision 1
   head "http://git.einval.com/git/abcde.git"
 
   bottle do
@@ -22,6 +23,16 @@ class Abcde < Formula
   depends_on "vorbis-tools" => :optional
   depends_on "glyr" => :optional
 
+  # Fix "Expansion of $REDIR quoted on MacOSX breaks cp" bug
+  # (http://abcde.einval.com/bugzilla/show_bug.cgi?id=22)
+  # Obsolete once a new version is released as upstream already merged this
+  # patch in c024365a846faae390f23c86f32235d6209e6edf
+  # (http://git.einval.com/cgi-bin/gitweb.cgi?p=abcde.git;a=commit;h=c024365a846faae390f23c86f32235d6209e6edf)
+  patch do
+    url "http://abcde.einval.com/bugzilla/attachment.cgi?id=12"
+    sha256 "4620dd5ef7ab32b6511782da85831661ccee292fadff1f58acc3b4992486af62"
+  end
+
   def install
     system "make", "install", "prefix=#{prefix}", "etcdir=#{etc}"
   end