From 8a612ba5d42444bc02a3c8b05cdc4bd77aa0d201 Mon Sep 17 00:00:00 2001
From: Daniel Jaouen <dcj24@cornell.edu>
Date: Wed, 19 Feb 2014 18:49:25 -0500
Subject: [PATCH] Handle homebrew_cask "nothing to list" corner case.

---
 library/packaging/homebrew_cask | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/library/packaging/homebrew_cask b/library/packaging/homebrew_cask
index 20241f2e5c..96fd5cfef1 100644
--- a/library/packaging/homebrew_cask
+++ b/library/packaging/homebrew_cask
@@ -327,7 +327,9 @@ class HomebrewCask(object):
         cmd = [self.brew_path, 'cask', 'list']
         rc, out, err = self.module.run_command(cmd)
 
-        if rc == 0:
+        if 'nothing to list' in out:
+            return True
+        elif rc == 0:
             casks = [cask_.strip() for cask_ in out.split('\n') if cask_.strip()]
             return self.current_cask in casks
         else: