Include bash-completion rules for git-flow

bobthecow has some bash-completion rules for the git-flow toolset.
The formula now installs them.  The rules are installed regardless of
whether bash-completion is installed; if you're not using
bash-completion, you'll just get an extra file lying around in

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/Library/Formula/git-flow.rb b/Library/Formula/git-flow.rb
index 96667179a..11ce83007 100644
--- a/Library/Formula/git-flow.rb
+++ b/Library/Formula/git-flow.rb
@@ -1,5 +1,22 @@
+# -*- coding: utf-8 -*-
 require 'formula'
 
+class GitFlowCompletion <Formula
+  url 'git://github.com/bobthecow/git-flow-completion.git', :tag => '0.3'
+  version '0.3'
+  head 'git://github.com/bobthecow/git-flow-completion.git', :branch => 'develop'
+
+  def initialize
+    # We need to hard-code the formula name since Homebrew can't
+    # deduce it from the formula's filename, and the git download
+    # strategy really needs a valid name.
+
+    super "git-flow-completion"
+  end
+
+  homepage 'http://github.com/bobthecow/git-flow-completion'
+end
+
 class GitFlow <Formula
   url 'git://github.com/nvie/gitflow.git', :tag => '0.3'
   version '0.3'
@@ -9,5 +26,19 @@ class GitFlow <Formula
 
   def install
     system "make", "prefix=#{prefix}", "install"
+
+    # Normally, etc files are installed directly into HOMEBREW_PREFIX,
+    # rather than being linked from the Cellar — this is so that
+    # configuration files don't get clobbered when you update.  The
+    # bash-completion file isn't really configuration, though; it
+    # should be updated when we upgrade the package.
+
+    cellar_etc = prefix + 'etc'
+    bash_completion_d = cellar_etc + "bash_completion.d"
+
+    completion = GitFlowCompletion.new
+    completion.brew do
+      bash_completion_d.install "git-flow-completion.bash"
+    end
   end
 end