Use fmt for errors, like slog.TextHandler #11
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Uses fmt.Fprintf with "%+v" to print errors. Useful with some error packages which render additional information like stacktraces. Addresses phsym#7
If the error doesn't implement fmt.Formatter, as most won't, its faster to use err.Error() than always use fmt to print the error.
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Uses fmt.Fprintf with "%+v" to print errors. Useful with some error packages which render additional information like stacktraces. Addresses #7