1 files changed, 56 insertions, 12 deletions
diff --git a/runtime/autoload/provider/ruby.vim b/runtime/autoload/provider/ruby.vim
index aad8c09d28..c8ede20a75 100644
--- a/runtime/autoload/provider/ruby.vim
+++ b/runtime/autoload/provider/ruby.vim
@@ -1,13 +1,30 @@
 " The Ruby provider helper
-if exists('s:loaded_ruby_provider')
+if exists('g:loaded_ruby_provider')
   finish
 endif
+let g:loaded_ruby_provider = 1
 
-let s:loaded_ruby_provider = 1
+let s:stderr = {}
+let s:job_opts = {'rpc': v:true}
+
+function! s:job_opts.on_stderr(chan_id, data, event)
+  let stderr = get(s:stderr, a:chan_id, [''])
+  let last = remove(stderr, -1)
+  let a:data[0] = last.a:data[0]
+  call extend(stderr, a:data)
+  let s:stderr[a:chan_id] = stderr
+endfunction
+
+function! provider#ruby#Detect() abort
+  return exepath('neovim-ruby-host')
+endfunction
+
+function! provider#ruby#Prog()
+  return s:prog
+endfunction
 
 function! provider#ruby#Require(host) abort
-  " Collect registered Ruby plugins into args
-  let args = []
+  let args = [provider#ruby#Prog()]
   let ruby_plugins = remote#host#PluginsForHost(a:host.name)
 
   for plugin in ruby_plugins
@@ -15,20 +32,47 @@ function! provider#ruby#Require(host) abort
   endfor
 
   try
-    let channel_id = rpcstart(provider#ruby#Prog(), args)
-
-    if rpcrequest(channel_id, 'poll') == 'ok'
+    let channel_id = jobstart(args, s:job_opts)
+    if rpcrequest(channel_id, 'poll') ==# 'ok'
       return channel_id
     endif
   catch
     echomsg v:throwpoint
     echomsg v:exception
+    for row in get(s:stderr, channel_id, [])
+      echomsg row
+    endfor
   endtry
-
-  throw remote#host#LoadErrorForHost(a:host.orig_name,
-        \ '$NVIM_RUBY_LOG_FILE')
+  throw remote#host#LoadErrorForHost(a:host.orig_name, '$NVIM_RUBY_LOG_FILE')
 endfunction
 
-function! provider#ruby#Prog() abort
-  return 'neovim-ruby-host'
+function! provider#ruby#Call(method, args)
+  if s:err != ''
+    echoerr s:err
+    return
+  endif
+
+  if !exists('s:host')
+    try
+      let s:host = remote#host#Require('legacy-ruby-provider')
+    catch
+      let s:err = v:exception
+      echohl WarningMsg
+      echomsg v:exception
+      echohl None
+      return
+    endtry
+  endif
+  return call('rpcrequest', insert(insert(a:args, 'ruby_'.a:method), s:host))
 endfunction
+
+let s:err = ''
+let s:prog = provider#ruby#Detect()
+let s:plugin_path = expand('<sfile>:p:h') . '/script_host.rb'
+
+if empty(s:prog)
+  let s:err = 'Cannot find the neovim RubyGem. Try :CheckHealth'
+endif
+
+call remote#host#RegisterClone('legacy-ruby-provider', 'ruby')
+call remote#host#RegisterPlugin('legacy-ruby-provider', s:plugin_path, [])