From 799dd7108ef87821bf39cb6e611612f7b3338fd1 Mon Sep 17 00:00:00 2001
From: Max Howell <max@methylblue.com>
Date: Sat, 27 Feb 2010 17:26:27 +0000
Subject: [PATCH] String.undent for prettier HEREDOCs

---
 Library/Homebrew/extend/ARGV.rb   | 51 +++++++++++++++----------------
 Library/Homebrew/extend/string.rb | 15 +++++++++
 Library/Homebrew/global.rb        |  1 +
 3 files changed, 41 insertions(+), 26 deletions(-)
 create mode 100644 Library/Homebrew/extend/string.rb

diff --git a/Library/Homebrew/extend/ARGV.rb b/Library/Homebrew/extend/ARGV.rb
index 34278e6e17..b43979fae6 100644
--- a/Library/Homebrew/extend/ARGV.rb
+++ b/Library/Homebrew/extend/ARGV.rb
@@ -61,36 +61,35 @@ module HomebrewArgvExtension
     return false
   end
 
-  def usage
-    <<-EOS
-Usage: brew command [formula] ...
-Usage: brew [--prefix] [--cache] [--version|-v]
-Usage: brew [--verbose|-v]
+  def usage; <<-EOS.undent
+    Usage: brew command [formula] ...
+    Usage: brew [--prefix] [--cache] [--version|-v]
+    Usage: brew [--verbose|-v]
 
-Principle Commands:
-  install formula ... [--ignore-dependencies] [--HEAD|-H]
-  list [--unbrewed] [formula] ...
-  search [/regex/] [substring]
-  uninstall formula ...
-  update
+    Principle Commands:
+      install formula ... [--ignore-dependencies] [--HEAD|-H]
+      list [--unbrewed] [formula] ...
+      search [/regex/] [substring]
+      uninstall formula ...
+      update
 
-Other Commands:
-  cleanup [formula]
-  home formula ...
-  info [formula] [--github]
-  link formula ...
-  outdated
-  prune
-  unlink formula ...
+    Other Commands:
+      cleanup [formula]
+      home formula ...
+      info [formula] [--github]
+      link formula ...
+      outdated
+      prune
+      unlink formula ...
 
-Commands useful when contributing:
-  create URL
-  edit [formula]
-  log formula
-  install formula [--debug|-d] [--interactive|-i] [--verbose|-v]
+    Commands useful when contributing:
+      create URL
+      edit [formula]
+      log formula
+      install formula [--debug|-d] [--interactive|-i] [--verbose|-v]
 
-To visit the Homebrew homepage type:
-  brew home
+    To visit the Homebrew homepage type:
+      brew home
     EOS
   end
 
diff --git a/Library/Homebrew/extend/string.rb b/Library/Homebrew/extend/string.rb
new file mode 100644
index 0000000000..974906b1d2
--- /dev/null
+++ b/Library/Homebrew/extend/string.rb
@@ -0,0 +1,15 @@
+class String
+  def undent
+    gsub /^.{#{slice(/^ +/).length}}/, ''
+  end
+end
+
+if __FILE__ == $0
+  undented = <<-EOS.undent
+    hi
+....my friend over
+    there
+  EOS
+  
+  assert undented == "hi\nmy friend over\nthere\n"
+end
diff --git a/Library/Homebrew/global.rb b/Library/Homebrew/global.rb
index 4451e39746..a71ecc67d4 100644
--- a/Library/Homebrew/global.rb
+++ b/Library/Homebrew/global.rb
@@ -1,5 +1,6 @@
 require 'extend/pathname'
 require 'extend/ARGV'
+require 'extend/string'
 require 'utils'
 
 ARGV.extend(HomebrewArgvExtension)