Only try mirrors for CurlDownloadStrategies

Also adjust output text slightly for prettiness.

A possibly useful side effect here is safe_system has a defined Exception (subclassing RuntimeError) now.

1 files changed, 3 insertions, 3 deletions

diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index 485995615..dc7bf5d42 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -92,7 +92,7 @@ end
 def safe_system cmd, *args
   unless Homebrew.system cmd, *args
     args = args.map{ |arg| arg.to_s.gsub " ", "\\ " } * " "
-    raise "Failure while executing: #{cmd} #{args}"
+    raise ErrorDuringExecution, "Failure while executing: #{cmd} #{args}"
   end
 end
 
@@ -106,13 +106,13 @@ end
 
 def curl *args
   curl = Pathname.new '/usr/bin/curl'
-  raise "#{curl} is not an executable!" unless curl.exist? and curl.executable?
+  raise "#{curl} is not executable" unless curl.exist? and curl.executable?
 
   args = [HOMEBREW_CURL_ARGS, HOMEBREW_USER_AGENT, *args]
   # See https://github.com/mxcl/homebrew/issues/6103
   args << "--insecure" if MacOS.version < 10.6
 
-  raise DownloadError.new curl, args, $? unless Homebrew.system curl, *args
+  safe_system curl, *args
 end
 
 def puts_columns items, star_items=[]