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//! Rules to update the codebase using `rerast`
/// Converts try!() to ?
fn try_to_question_mark<T, E, X: From<E>>(r: Result<T, E>) -> Result<T, X> {
replace!(try!(r) => r?);
unreachable!()
}
fn trim_left_to_start(s: &str) {
replace!(s.trim_left() => s.trim_start());
replace!(s.trim_right() => s.trim_end());
}
fn trim_left_matches_to_start<P: FnMut(char) -> bool>(s: &str, inner: P) {
replace!(s.trim_left_matches(inner) => s.trim_start_matches(inner));
replace!(s.trim_right_matches(inner) => s.trim_end_matches(inner));
}
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