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fix: Fix pat fragment handling in 2021 edition

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This commit is contained in:
Lukas Wirth 2023-04-24 22:21:37 +02:00
parent 5750d81e30
commit d1ca505525
8 changed files with 80 additions and 23 deletions
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3
crates/mbe/src/expander.rs
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@ -13,10 +13,11 @@ use crate::{parser::MetaVarKind, tt, ExpandError, ExpandResult};
pub(crate) fn expand_rules(
rules: &[crate::Rule],
input: &tt::Subtree,
is_2021: bool,
) -> ExpandResult<tt::Subtree> {
let mut match_: Option<(matcher::Match, &crate::Rule)> = None;
for rule in rules {
let new_match = matcher::match_(&rule.lhs, input);
let new_match = matcher::match_(&rule.lhs, input, is_2021);
if new_match.err.is_none() {
// If we find a rule that applies without errors, we're done.