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2020-08-30Add `-Z proc-macro-backtrace` to allow showing proc-macro panicsAaron Hill-8/+39
Fixes #75050 Previously, we would unconditionally suppress the panic hook during proc-macro execution. This commit adds a new flag -Z proc-macro-backtrace, which allows running the panic hook for easier debugging.
2020-08-22Use intra-doc link in `proc_macro`LeSeulArtichaut-1/+1
2020-08-03Stabilize Ident::new_rawAaron Hill-2/+5
Tracking issue: #54723 This is a continuation of PR #59002
2020-07-31Stabilize as_deref and as_deref on ResultLzu Tao-1/+0
2020-07-27mv std libs to library/mark-0/+3366