Re: [gentoo-user] linux make modules solved

[Mick]

On 17/06/06, Etaoin Shrdlu <shrdlu@×××××××××××××.org> wrote:
> On Saturday 17 June 2006 12:15, Mick wrote:
>
> > I am getting confused here:  why is module building related to setting
> > grep's colour option?
>
> There is probably some script that parses the output of grep, and,
> with --color=always, this includes terminal control characters and
> escape sequences which confuse the parser. Using --color=auto, on the
> other hand, is the correct way to do the "right" thing, ie grep
> itself "knows" whether it should emit escape sequences to colorize the
> output (if it's really outputting to terminal) or not (if, for example,
> it's called from inside a command substitution).
>
> The following works:
> echo "hello" | grep ello | grep hello
>
>
> The following does not work, since the output of the first grep
> contains "garbage" (from the point of view of the second grep) between
> the "h" and the "e":
>
> echo "hello" | grep --color=always ello | grep hello   # does not work
>
>
> Finally, the next one works, because the first grep knows that colorizing
> the output here is useless and does not emit escape sequences:
>
> echo "hello" | grep --color=auto ello | grep hello     # works

Thanks!  Nice explanation.
-- 
Regards,
Mick
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