Ensure that heredoc lexing allows only valid identifiers #16548
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Blacksmoke16
added
kind:bug
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Does this PR needs sth to be reviewed? |
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To be honest, I fail to see the problem, and the issue doesn't outline any trouble that may come from that. It's also a breaking change. |
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Resolves #15855 (although it still allows
_as an identifier since it's valid elsewhere too)