Re: Printing in red during output from head

[Alex fxmbsw7 Ratchev]

#!/usr/bin/gawk -f

BEGIN {
 ORS = ""
 RS = "<==($|\n)|=|(^|\n)==>"
}

RT ~ ">" {
 if ( RT ~ /^\n/ ) { sub( /./, "", RT ) ; n = "\n" }
 $0 = $0 ( ( n != "" ) ? n : "" ) "\33[31m" RT
}

RT ~ "<" {
 if ( RT ~ "\n$" ) { sub( ".$", "", RT ) ; n = "\n" }
 $0 = $0 RT "\33[m" ( ( n != "" ) ? n : "" )
}

{
 print
 n = ""
}


-- end of gawk script ---


then you just gawk -f file.gawk or chmod +x file and file or ./file it
in the pipe say
also with one two lines a n = 5 max for example can be implented, to
skip head for direct only gawk=

On Wed, Jul 21, 2021 at 1:03 PM <lisa-asket@perso.be> wrote:
>
>
> I would like to have the whole line in red including the arrow tags.
>
> From: Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>
> To: lisa-asket@perso.be
> Subject: Re: Printing in red during output from head
> Date: 21/07/2021 12:51:44 Europe/Paris
> Cc: help-bash <help-bash@gnu.org>
>
> the <<< redirects its next argument to stdin of the cmd in question
> it just was a copypaste of my terminal, where i tested, .. didnt remove it
> in the end no '<<< "str..."'
>
> On Wed, Jul 21, 2021 at 12:50 PM <lisa-asket@perso.be> wrote:
> >
> > I am getting confused about foo and bar.
> >
> >
> > From: Alex fxmbsw7 Ratchev <fxmbsw7@gmail.com>
> > To: lisa-asket@perso.be
> > Subject: Re: Printing in red during output from head
> > Date: 21/07/2021 05:28:19 Europe/Paris
> > Cc: help-bash <help-bash@gnu.org>
> >
> > gawk -v ORS= -v RS='<==|==>' 'RT == "==>" { $0 = $0 RT "\33[31m" } RT
> > == "<==" { $0 = $0 "\33[m" RT } 1' <<<'==> foo bar <=='$'\nbarbar\n==>
> > again <==\nbla'
> >
> > find | .. | gawk
> > gawk <( find .. )
> >
>