missing dependency error even though it's present (bluecloth)

[devth]

I keep getting the To preview markdown format you need to install the bluecloth gem error when trying to run vim-preview. I use rvm, but I tried installing bluecloth on all my rubies (including system). I also ran !sudo gem install bluecloth inside vim, but the error still appears.

:!ruby -v gives ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0] which is system ruby.

[greyblake]

Hm.. Pretty strange issue. Do you have a similar trouble when you're trying to preview textile(RedCloth gem)? :!ruby -v shows an information about ruby in your environment, but Vim can use another one.

Could you please save the next file:

ruby <<RUBY_CODE
    puts RUBY_DESCRIPTION
    require 'rubygems'
    require 'bluecloth'
RUBY_CODE

And then type in your Vim keeping the file opened :so % What output do you get?

[devth]

I get

ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.8.0]
Error detected while processing /Users/trevorhartman/Desktop/vim_ruby_test:
line    5:
LoadError: no such file to load -- bluecloth

So apparently vim uses my rvm's 1.9.2 (which is my default ruby). In my terminal I verified that I have bluecloth in my gem list when using 1.9.2.

I get the same "RedCloth required" error when trying textile, after having installed RedCloth on my rvm ruby.

[greyblake]

I don't think Vim uses ruby from rvm. I guess you might have gem1.9 or similar command. Or try to specify full path to gem command like this: /usr/bin/gem install bluecloth

[devth]

Hmm, still no luck :/ Thanks for your help.

[devth]

I followed the advice at http://beginrescueend.com/integration/vim/ for MacVim integration, and sourced rvm in ~/.zshenv instead of ~/.zshrc. I no longer get the bluecloth missing error, and instead am getting:

Error detected while processing function <SNR>65_Preview..preview#show:
line    4:
NoMethodError: undefined method `flush' for #<Object:0x000001028557c0>  

Update: the file you previously asked me to :so % now runs without error.

[greyblake]

I was about to offer to you to execute the next Vim script:

ruby <<RUBY_CODE
    require 'rubygems'
    require 'rubygems/gem_runner'
    Gem::GemRunner.new.run ['install', 'bluecloth']
RUBY_CODE

It seems to be a common issue for MacVim with Ruby 1.9.2. The ticket already exists: https://github.com/greyblake/vim-preview/issues/10 Unfortunately I don't have an appropriate environment to reproduce this bug ( I am a linux user). :(

But I'm gonna create a patch could you please help me to test it?

[devth]

Absolutely.

[greyblake]

Please try branch ruby192.

[devth]

On ruby192 I still get

Error detected while processing function <SNR>65_Preview..preview#show:
line    4:
NoMethodError: undefined method `flush' for #<Object:0x0000010205a5c0>    

[greyblake]

Thanks for try. It looks like there are some issue in Vim with Ruby 1.9.2: http://vim.1045645.n5.nabble.com/Is-vim-7-3-ready-for-compiling-with-ruby-1-9-2-support-td4410535.html