Shortened error on task failure.

git-svn-id: svn+ssh://rubyforge.org/var/svn/rake/trunk@403 5af023f1-ac1a-0410-98d6-829a145c37ef

Author: jimweirich

rake/lib/rake.rb

@@ -479,8 +479,10 @@ def sh(*cmd, &block)
       options = {}
     end
     unless block_given?
+      show_command = cmd.join(" ")
+      show_command = show_command[0,42] + "..." if show_command.length > 45
       block = lambda { |ok, status|
-        ok or fail "Command failed with status (#{status.exitstatus}): [#{cmd.join(" ")}]"
+        ok or fail "Command failed with status (#{status.exitstatus}): [#{show_command}]"
       }
     end
     fu_check_options options, :noop, :verbose