Re: errors needs to be tostring()'d

[Daurnimator <quae@...>]

On 20 November 2011 01:04, Patrick Donnelly <batrick@batbytes.com> wrote:
> I would hope not. Why would error call the __tostring metamethod on an object?
>
> --
> - Patrick Donnelly
>
>

error doesn't; the lua interpreter's main pcall prints off any
un-caught errors: currently if the error isn't a string, you just get:
lua: (error object is not a string)
It would be nice if it did a tostring() on the error message; so that
you could use error objects with a __tostring metamethod: error (
setmetatable({"Failure is ","an option"},{__tostring=table.concat})

See http://www.lua.org/source/5.1/lua.c.html#report

It is the same way in luajit and 5.2