9523c82543
Implement multiple patterns with `|` in `if let` and `while let` (RFC 2175) cc https://github.com/rust-lang/rust/issues/48215
NB: This crate is part of the Rust compiler. For an overview of the
compiler as a whole, see
the README.md file found in librustc
.
The syntax
crate contains those things concerned purely with syntax
– that is, the AST ("abstract syntax tree"), parser, pretty-printer,
lexer, macro expander, and utilities for traversing ASTs.