From 14ebf705aeb224934326b06cf95f1269f0ceca3c Mon Sep 17 00:00:00 2001
From: arlolra <arlolra@gmail.com>
Date: Tue, 26 Oct 2010 23:32:33 -0700
Subject: [PATCH] Handle dashed tags at github.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
---
 Library/Homebrew/extend/pathname.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 8d81861ec5..0982a6f334 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -113,6 +113,10 @@ class Pathname
     %r[github.com/.*/tarball/v?((\d\.)+\d+)$].match to_s
     return $1 if $1
 
+    # eg. github.com/isaacs/npm/tarball/v0.2.5-1
+    %r[github.com/.*/tarball/v?((\d\.)+\d+-(\d+))$].match to_s
+    return $1 if $1
+
     # eg. boost_1_39_0
     /((\d+_)+\d+)$/.match stem
     return $1.gsub('_', '.') if $1