From 7adee6d62fabae0244d611069f09ab906a459805 Mon Sep 17 00:00:00 2001
From: Shaun Jackman
Date: Fri, 1 Dec 2017 15:00:27 -0800
Subject: Utils.popen_read: Nonexistent program should fail

Ensure that $CHILD_STATUS.success? is false when the command does not exist.
---
 Library/Homebrew/utils/popen.rb | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'Library/Homebrew/utils')

diff --git a/Library/Homebrew/utils/popen.rb b/Library/Homebrew/utils/popen.rb
index 2fa3ade46..21dceec06 100644
--- a/Library/Homebrew/utils/popen.rb
+++ b/Library/Homebrew/utils/popen.rb
@@ -14,7 +14,15 @@ module Utils
         yield pipe
       else
         options[:err] ||= :close unless ENV["HOMEBREW_STDERR"]
-        exec(*args, options)
+        begin
+          exec(*args, options)
+        rescue Errno::ENOENT
+          $stderr.puts "brew: command not found: #{args[0]}" unless options[:err] == :close
+          exit! 127
+        rescue SystemCallError
+          $stderr.puts "brew: exec failed: #{args[0]}" unless options[:err] == :close
+          exit! 1
+        end
       end
     end
   end
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