强制红宝石在异常时隐藏回溯 [英] Force ruby to hide backtrace on exception

问题描述

我用Rakefile做一些常规任务，例如编译，链接等.

I do some usual tasks with Rakefile, such as compilation, linking, etc.

当编译失败时，ruby会显示发生任务错误的完整回溯，但对我来说真的没用，甚至更多:此回溯会隐藏编译错误.

When compilation fails ruby shows full backtrace in which task error happen, but it's really useless for me, even more: this backtrace hides compilation errors.

$ rake
mkdir -p build
llvm-as source/repl.ll -o build/repl.bc
llvm-as: source/repl.ll:6:22: error: expected value token
  call i32 @fputc(i8 'x', i32 0)
                 ^
rake aborted!
Command failed with status (1): [llvm-as source/repl.ll -o build/repl.bc...]
/usr/local/lib/ruby/1.9.1/rake.rb:993:in `block in sh'
/usr/local/lib/ruby/1.9.1/rake.rb:1008:in `call'
/usr/local/lib/ruby/1.9.1/rake.rb:1008:in `sh'
/usr/local/lib/ruby/1.9.1/rake.rb:1092:in `sh'
...

如何在耙中止！"之后隐藏所有内容！ ?

How to hide all after "rake aborted!" ?

推荐答案

似乎您在rake任务中使用"sh"命令来启动编译器.在这种情况下，您应该捕获RuntimeError，以获取此错误.像这样:

It seems that you are using the "sh" command in the rake task to start the compiler. In that case you should catch a RuntimeError, in order to get this error. Something like this:

task "foo" do
  begin
    sh "bar"
  rescue RuntimeError => e
    puts e.message
    exit(1)
  end
end

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