https://git.ruby-lang.org/ruby.git/commit/?id=b0eb5aa344

From b0eb5aa34476636771a6bfa1397115011066c410 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Tue, 11 Aug 2020 11:36:48 +0900
Subject: RubyVM::CEscape#rstring2cstr: do not escape '

A single quote "is representable either by itself or by the escape
sequence", according to ISO/IEC 9899 (checked all versions).  So this is
not a bug fix.  But the generated output is a bit readable without
backslashes.

diff --git a/tool/ruby_vm/helpers/c_escape.rb b/tool/ruby_vm/helpers/c_escape.rb
index fa3cb8b..a3368b8 100644
--- a/tool/ruby_vm/helpers/c_escape.rb
+++ b/tool/ruby_vm/helpers/c_escape.rb
@@ -60,7 +60,7 @@ module RubyVM::CEscape https://github.com/ruby/ruby/blob/trunk/tool/ruby_vm/helpers/c_escape.rb#L60
       "\x18"=>"\\x18", "\x19"=>"\\x19", "\x1A"=>"\\x1a",   "\e"=>"\\x1b",
       "\x1C"=>"\\x1c", "\x1D"=>"\\x1d", "\x1E"=>"\\x1e", "\x1F"=>"\\x1f",
          " "=>    " ",    "!"=>    "!",   "\""=> "\\\"",    "#"=>    "#",
-         "$"=>    "$",    "%"=>    "%",    "&"=>    "&",    "'"=>  "\\'",
+         "$"=>    "$",    "%"=>    "%",    "&"=>    "&",    "'"=>    "'",
          "("=>    "(",    ")"=>    ")",    "*"=>    "*",    "+"=>    "+",
          ","=>    ",",    "-"=>    "-",    "."=>    ".",    "/"=>    "/",
          "0"=>    "0",    "1"=>    "1",    "2"=>    "2",    "3"=>    "3",
-- 
cgit v0.10.2


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