Squiggly Heredocs

Ruby Versions 2.3.0, 2.3.1, 2.3.2, 2.3.3 2.3.4, 2.4.0 and 2.4.1 are all susceptible to a Ripper bug, whereby on some occasions Squiggly Heredoc information may be lost by Ripper's Lexer.

The solution is to upgrade to either Ruby 2.3.5 or 2.4.2, where the Ripper bug has been corrected.

Rufo detects if your format is potentially compromised by this bug and recommends that you upgrade.