Re: "tee -" treating "-" as stdout violating POSIX?

[Bob Proulx]

Bernhard Voelker wrote:
> "tee -" duplicates stdin to stdout (maybe in interleaved order)
> since v5.2.1-1247-g8dafbe5; this behavior is documented as such.
> 
> But POSIX explicitly mandates different behavior:
> 
>   http://pubs.opengroup.org/onlinepubs/9699919799/utilities/tee.html
> 
>   If a file operand is '-', it shall refer to a file named -;
>   implementations shall not treat it as meaning standard output.
> 
> I assume it's too late to revert the behavior to adhere to POSIX
> rules as it may break existing use cases.
> Shall we either document that the GNU tee implementation violates
> POSIX, or should we go for a change to POSIX to allow this (or is
> there already such a discussion)?

I don't think the "-" behavior is useful in this case.

I vote for fixing it as a bug fix.

Bob