Use String#undump instead of eval#333
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Pull request overview
This PR updates Racc’s grammar file lexer (GrammarFileParser#yylex0) to avoid eval when parsing quoted string literals, aiming to reduce code execution risk by using String#undump instead.
Changes:
- Replaces
eval(scan_quoted(...))withString#undumpfor string-literal parsing. - Adds a conversion step intended to make single-quoted literals compatible with
undump.
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String#undump is enough to parse a string literal.
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String#undumpis enough to parse a string literal.