From 05991dd846ac54b10cd78453b140de8bfb259392 Mon Sep 17 00:00:00 2001
From: Max Howell
Date: Wed, 22 Aug 2012 09:33:10 -0400
Subject: Produce good error messages for bad tarballs

---
 Library/Homebrew/extend/pathname.rb | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'Library')

diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 8009e98ee..8ea1b9a93 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -189,8 +189,12 @@ class Pathname
     when /^\xFD7zXZ\x00/ then :xz
     when /^Rar!/         then :rar
     else
-      # Assume it is not an archive
-      nil
+      # This code so that bad-tarballs and zips produce good error messages
+      # when they don't unarchive properly.
+      case extname
+        when ".tar.gz", ".tgz", ".tar.bz2", ".tbz" then :tar
+        when ".zip" then :zip
+      end
     end
   end
 
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