[runner] Add support for "folding" block delimiter #654
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We recently began using the
|
character as a delimiter for YAML blocks in test files. The content of these blocks can confuse the custom YAML parser, disrupting test runs.It looks like TC-39 has reached consensus on gh-647 ("Definitive decision for Test262 console runner"), but I'm not sure what that decision was.
In any case, the code is still in use, and this is a blocking bug (no pun intended--honest). The fix was simple enough; we can either merge it to
master
here, or allow consumers to apply the patch to their forks of the runner.