From 423a8c34fe5c77a9fafc2b00a8fa55ec2dd4df2c Mon Sep 17 00:00:00 2001
From: Adam Vandenberg
Date: Fri, 30 Mar 2012 22:34:42 -0700
Subject: install: warn when passed no files

Rationale: we warn when inreplace makes no changes; this is a similar
sort of warning. We expected some list (probably via Dir) to include
some files, but none were found.

Either the list was wrong, or the install can now be omitted.
---
 Library/Homebrew/extend/pathname.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'Library/Homebrew')

diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 5ea924c9c..3adf6dfc2 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -8,8 +8,16 @@ class Pathname
     sources.each do |src|
       case src
       when Array
+        if src.empty?
+          opoo "install was passed an empty array"
+          return []
+        end
         src.each {|s| results << install_p(s) }
       when Hash
+        if src.empty?
+          opoo "install was passed an empty hash"
+          return []
+        end
         src.each {|s, new_basename| results << install_p(s, new_basename) }
       else
         results << install_p(src)
-- 
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