Multi-line strings containing quotes breaks the parser

[schuylermartin45]

Quotes in multi-line strings cause the parser to crash in a few different ways.

For example:

about:                                                                          
  summary: fooo                                                                 
    'bar' bar         

Results in:

EXCEPTION: An exception occurred while parsing the recipe file
did not find expected <document start>
  in "<unicode string>", line 1, column 7

[schuylermartin45]

Here is another example that causes the same excapetion:

  description: "
    `doit` is a task management & automation tool.

    `doit` comes from the idea of bringing the power of build-tools to execute
    any kind of **task**

    `doit` is a modern open-source build-tool written in python designed to be
    simple to use and flexible to deal with complex work-flows.

    It is specially suitable for building and managing custom work-flows where
    there is no out-of-the-box solution available.

    `doit` has been successfully used on: systems test/integration automation,
    scientific computational pipelines, content generation, configuration
    management, etc."

(from https://github.com/AnacondaRecipes/doit-feedstock)

[schuylermartin45]

There are many R-recipes that contain description fields that cause exceptions.