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Re: RFA: >, >>, and "tee" operators


On Tue, Jul 23, 2002 at 02:24:15PM -0600, Tom Tromey wrote:

>>>>> "Daniel" == Daniel Jacobowitz <drow@mvista.com> writes:



>> transcript > FILE
>> transcript >> FILE
>> transcript | COMMAND

Daniel> I don't like this syntax very much.  It looks too much like
Daniel> dumping the output of a command ("transcript") to the file,
Daniel> not like a redirection for the future output.

Good point.

Daniel> Also - is piping to a command actually useful?

I don't know.  I haven't even been running with this patch in place,
since the feature in general is only occasionally useful to me.  I
thought I saw a request for this (piping to a command)?

Daniel> Hmm...  How do you feel about:
Daniel> 	transcript [-append] FILE
Daniel> 	tee [-append] FILE
Daniel> Where transcript replaces ">" and ">>"?

That looks good to me.  Or even `transcript [-tee] [-append] FILE'.
Or maybe `[-notee]', with tee as the default.

I'd rather have tee as the default, also.  But -notee doesn't look
right, so I left it as two commands.  Anyone else out on the list have
a suggestion?
Does the `transcript FILE' command send both the user input (prompts?) and output to the file (output also to the console)? Like unix script?

I guess the corresponding ``tee FILE'' command just writes output?

I think there is also a need for a tempoary redirection. So I guess either the obscure:
>FILE <command> ...
maybe?
log FILE <command> .....

GDB's option identifier is ``/'' and not ``-''. See the print/<FMT> commands. ``-'' has the problem of being a valid expression operator.
I should note that the current parser is pretty broken. It can't differentiate between:
transcript/f
transcript /f
(sigh) but that is a fixable problem.

Andrew



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