Put "Error:" before error output

[Yitzchak Gale]

-1

There are common idioms that rely on the current behavior,
so I think this would break a lot code.

Examples:

In command line programs, it is very common to use
"error" for printing the usage message.

Many programs use "error" as a general way to exit
from pure code with a message.

I'm not commenting about whether or not those
are good practice, just reporting that they are out there.

I would be in favor of this though if it is off by default
and is turned on by an option or pragma. But not just
-Werror, though, except for messages that would
otherwise have been prefixed by "Warning", like
the current behavior.

Thanks,
Yitz



On Fri, Jan 23, 2015 at 1:04 PM, Konstantine Rybnikov <k-bx at k-bx.com> wrote:
> Hi!
>
> I'm bringing this up once again. Can we add "Error:" in the output of an
> error in a similar way ghc shows "Warning:" for warnings? Main reasoning is
> that, for example, on a build-server, where you have lots of cores to build
> your program, if you get an error, it gets lost somewhere in the middle of
> compiler's output in all other "Warning" messages you get, since error is
> not always shown last on multi-core build.
>
> Thanks.
>
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