codeql/ruby/ql/lib/change-notes/2022-03-16-string-escape-sequences.md

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• getConstantValue() now returns the contents of strings and symbols after escape sequences have been interpreted. For example, for the Ruby string literal "\n", getConstantValue().getString() previously returned a QL string with two characters, a backslash followed by n; now it returns the single-character string "\n" (U+000A, known as newline).
• getConstantValue().getInt() previously returned incorrect values for integers larger than 2³¹-1 (the largest value that can be represented by the QL int type). It now returns no result in those cases.