lex: fix buggy history
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@ -117,8 +117,8 @@ impl Lexer {
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}
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}
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pub fn prev(&mut self) -> Option<&Token> {
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pub fn prev(&mut self) -> Option<&Token> {
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let prev = self.history.last()?;
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self.offset += 1;
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self.offset += 1;
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let prev = &self.history[self.history.len() - self.offset];
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Some(prev)
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Some(prev)
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}
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}
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