src-self-hosted/errmsg.zig | 87 ++++++++++++++++++++++++++++++++
 src-self-hosted/main.zig   | 71 ++++++++++++++------------
 src-self-hosted/module.zig | 11 ++--
 std/zig/ast.zig            | 16 +++---
 4 files changed, 138 insertions(+), 47 deletions(-)