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POCan't pipe into gvim from a ruby sub process
 

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  1. POCan't pipe into gvim from a ruby sub process
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    <p>I've been attempting to use the PA_translator.vim plugin but found that it doesn't work in Win32 Gvim. This appears to be because in an embedded Vim Ruby script it's not possible to use any of the commands which pipe in from a subprocess. The original process builds a command dymanically and then launches a subprocess to obtain a JSON snippet like so:</p> <pre><code>cmd = "require 'net/http'; p Net::HTTP.get('%s', '%s')"% [host, path] response = `ruby -e "#{cmd}"` </code></pre> <p>If I run this in a command line ruby script it works fine, but inside a Vim script the pipe appears to return an empty string..</p> <p>I've also tried several other methods which produce the same result:</p> <pre><code>response = '' IO.popen("ruby.exe", "w+") do |f| f.write cmd f.close_write response = f.read p response end </code></pre> <p>And even:</p> <pre><code>def redirect orig_defout = $stdout $stdout = StringIO.new yield $stdout.string ensure $stdout = orig_defout end response = redirect { eval cmd } </code></pre> <p>All of these seem to fail for the same reason, it's not possible to get the output from the pipe and I get back an empty string. GVim is a true win32 process, is there some reason why piping from a subprocess won't work?</p> <p><strong>EDIT</strong>: If I try to capture piped output from embedded vim/perl, that works fine, so I guess it's some particular issue with the vim -> win32 -> ruby combination:</p> <pre><code>fun! SayHello() perl &lt;&lt; EOF $bob = `ls`; VIM::Msg($bob); EOF </code></pre> <p>endfun</p>
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    1. PTQuestion
    1. USBenj
    1. USBenj
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      1. VTUpMod
    1. COI don't see how this is related to GVim at all? Do these scripts work when run as standalone?
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      1. USNiklas B.
    2. COAlso, why are you opening an external Ruby process from inside Ruby? That doesn't seem to make any sense.
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      1. USNiklas B.
    3. CO@NiklasB As I said in my question, it does work in a standalone script it only fails in an embedded ruby gvim session.
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      1. POCan't pipe into gvim from a ruby sub process
      1. USBenj
 

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