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fix(messages)!: vim.ui_attach message callbacks are unsafe

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Problem:  Lua callbacks for "msg_show" events with vim.ui_attach() are
          executed when it is not safe.
Solution: Disallow non-fast API calls for "msg_show" event callbacks.
          Automatically detach callback after excessive errors.
          Make sure fast APIs do not modify Nvim state.
This commit is contained in:
Luuk van Baal
2024-06-20 14:48:06 +02:00
parent 7d771c3eee
commit de48fbbd5f
17 changed files with 215 additions and 141 deletions
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8
src/nvim/api/vim.c
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@@ -594,10 +594,12 @@ ArrayOf(String) nvim_get_runtime_file(String name, Boolean all, Arena *arena, Er
kvi_init(cookie.rv);
int flags = DIP_DIRFILE | (all ? DIP_ALL : 0);
TryState tstate;
try_enter(&tstate);
do_in_runtimepath((name.size ? name.data : ""), flags, find_runtime_cb, &cookie);
vim_ignored = try_leave(&tstate, err);
TRY_WRAP(err, {
do_in_runtimepath((name.size ? name.data : ""), flags, find_runtime_cb, &cookie);
});
return arena_take_arraybuilder(arena, &cookie.rv);
}