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Re: coloring STDERR to terminal



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On Sun, 27 Jun 2004, ari wrote:

atom@xxxxxxxxxxxxxx mentioned:

i'm not sure if this is possible without patching some sources, but here's
what i want to do... every time STDERR is directed to a terminal, i want
to filter it through _something_like_ this:
	awk '{print "^[[91m"$0"^[[0m"}'

Perhaps not what you're looking for, since the effect is asynchronous,
but you _could_ do this with a variation of:

 ERRFIFO=$HOME/.stderr-$TTY.fifo
 [ -p $ERRFIFO ] || mkfifo $ERRFIFO
 awk '{print "^[[91m"$0"^[[0m"}' <$ERRFIFO 1>&2 &

 exec 2>$ERRFIFO

Execution of this segment would, of course, need to be restricted to
once per terminal session.
===================

i guess this demonstrates what you mean by "asynchronous":
	{ echo -n a ; echo -n b >&2 ; echo c ; echo d >&2 ; }

(on freeBSD, "echo -n" suppresses the newline. i don't think that option is portable across all flavors of *nix)

the results are ~not~ what i would've though  ;)

it also doesn't do well at all with this command:
	gpg < clearsigned_file
which outputs some lines as STDERR, other lines as STDOUT.

and this isn't working anything the way i'd expect it to:
	time date > file_stdout 2> file_stderr

it seems that i can't redirect STDERR unless i run the command in curly-braces or parenthesis...
	{ time date ; } > file_stdout 2> file_stderr

back-quotes don't even work.


 	...atom

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