Error instead of backtrace when exec'ing non-existent commands.

Closes #241.

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/bundler/cli.rb b/lib/bundler/cli.rb
index f2b2071da6..b1381b0a32 100644
--- a/lib/bundler/cli.rb
+++ b/lib/bundler/cli.rb
@@ -167,8 +167,12 @@ module Bundler
       rubyopt.unshift "-I#{File.expand_path('../..', __FILE__)}"
       ENV["RUBYOPT"] = rubyopt.join(' ')
 
-      # Run
-      Kernel.exec *ARGV
+      begin
+        # Run
+        Kernel.exec *ARGV
+      rescue Errno::ENOENT
+        Bundler.ui.error "bundler: command not found: #{ARGV.first}"
+      end
     end
 
     desc "open GEM", "Opens the source directory of the given bundled gem"