[m-users.] io.error type

[Volker Wysk]

Am Freitag, dem 04.02.2022 um 12:54 +0100 schrieb Fabrice Nicol:
> So yes, errno codes could have been returned, if is_error had been 
> publicly visible, but design decisions went against this.

How are the chances that this will be changed? Not being able to determine
which error occured, is kind of grave.

Cheers, Volker
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