如何在vim的ruby界面中从ruby的shell命令重定向错误流？

Question

I want to use the rake module from vim's ruby interface to run rake files. When a rake task uses sh to call shell commands, the output goes directly to the terminal - it doesn't go through ruby's $stdout and $stderr - when I try to redirect $stdout and $stderr the output doesn't go to where I redirect it.

Now, in vim, that output does not go to vim's terminal - it goes to the terminal that launched vim!

stdout is not a problem, because rake prints it where I want it. However, if I try to use the rake module from vim's ruby interface, I don't want the error output to go to the terminal who called vim(which is hidden when running gVim and awkward when running shell vim) - I want it to go into something I can read via ruby or vimscript(so I can parse the error message)

So, I'm looking for a way to:

• Read\\Redirect stderr of ruby's shell calls, or
• Read\\redirect the stderr that vim sends to the shell that called it.

Is it possible?

Answer 1

If you use 2> when calling Ruby or rake, it will output stderr to where you want it.

Will output error to console:

ruby -e "raise 'exception'" > output

Will output error out file called output :

ruby -e "raise 'exception'" 2> output

Hopefully this helps!