On Apr 19, drieux said:
>### while(<FH>) {
>### if( /^$prefix/ ) {
>### print "$_";
>### my $nextLine = $_;
>### while ( $nextLine =~ /^$prefix/ ){
>### $nextLine = <FH>;
>### print "$nextLine";
>### }
>### }
>### } # end while
I would follow this code evolution, but partly because I'm a sneaky
bastard who delights in finding how to squeeze power out of Perl and do
the least work possible myself.
First, I'd use a regex trick of //g in scalar context, and /^/m.
while (<FH>) {
next unless /^$prefix/;
$_ .= <FH> while /^$prefix/gm;
print;
}
Sigh. It feels redundant to do that twice.
while (<FH>) {
if (/^$prefix/) { $next = 1; print; }
elsif ($next) { $next = 0; print; }
}
That feels like it could be a flip-flop.
while (<FH>) {
print if /^$prefix/ .. !/^$prefix/;
}
Ta da! If you want to one-line it...
/^$prefix/ .. !/^$prefix/ and print while <FH>;
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]
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