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There has been a change in how Ruby prints errors, which seems to have impacted a test that was checking stdout. The Ruby change discussion talks about printing unhandled errors, and in our case we're printing the results of an exception's
#inspect
method in arescue
block, but it seems too closely-related to be a coincidence.Aside from making the output go all on a single line (so the newlines in the HEREDOC were being removed), the escape sequences were being double-escaped (so every
\"
became\\"
). Putting single-quotes around the opening identifier avoids this issue.Ruby language change discussion:
https://bugs.ruby-lang.org/issues/18367
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