message: Provide context hint in reference intellisense document
diff: @@ -40,6 +40,7 @@ export class Reference {
  Object.keys(suggestions).map(key => {
  const item = suggestions[key]
  const command = new vscode.CompletionItem(item.reference, vscode.CompletionItemKind.Reference)
  + command.documentation = item.text
  this.suggestions.push(command)
  })
  return this.suggestions
  @@ -58,8 +59,11 @@ export class Reference {
  break
  }
  if (!(result[1] in items)) {
  + const prevContent = content.substring(0, content.substring(0, result.index).lastIndexOf('\n') - 1)
  + const followLength = content.substring(result.index, content.length).split('\n', 3).join('\n').length
  items[result[1]] = {
  - reference: result[1]
  + reference: result[1],
  + text: `${content.substring(prevContent.lastIndexOf('\n'), result.index + followLength)}\n...`
  }
  }
  }
  