Re: non-interactive usage and color error messages

[Hans-Bernhard B. <HBB...@t-...>]

Philipp K. Janert wrote:

> I think it would be highly desirable to be able to 
> switch warnings on or off (or possibly even set
> where they are sent).
> 
> I often call gnuplot from scripts, producing many
> graphs. In such situations, I would like to suppress
> warnings - or maybe put them into a log file.

IMHO, that's putting the cart before the horse.

> So, if we could support something like this, that
> would be great:
> 
> set warnings         # directs to STDERR or terminal

For all practical purposes, the terminal _is_ STDERR.

> set warnings "file" # directs to file

What's wrong with plain and simple redirection from the outside?

	gnuplot 2>file

> unset warnings     # suppresses output

	gnuplot 2>/dev/null

> Interactive terminals can then be "smart" to default
> to direct warnings to STDERR.

Except it isn't the terminal

> But people who use gnuplot in the background have the flexibility to
> do what they need.

They have that flexibility already, without us having to anything!

> In a similar spirit: would it be possible to include the
> start-up greeting message in the list of messages
> that can be redirected in this way?

It already is.