This reverts commit a034f87146. Conflicts: src/comp/middle/check_alt.rs src/comp/middle/trans_alt.rs src/comp/syntax/ast.rs src/comp/syntax/ast_util.rs src/comp/syntax/fold.rs src/comp/syntax/print/pprust.rs Conflicts: src/comp/middle/trans_alt.rs
a034f87146
This reverts commit ce0f054f9d.
ce0f054f9d