The do is actually redundant, he can use a basic block for localizing the $INPUT_RECORD_SEPARATOR aka $/

use v5.12;
use warnings;
use Data::Dump qw/pp dd/;

say pp $/;                              # show default

say my $x =
  "HEADER\n" x 3 .
  "fieldname: BLA BLA\n" .
  join $/, 1..5;

open my $fh, '<', \$x;

# ignore anything prior to "fieldname"
{ local $/ = "fieldname:"; <$fh> };

say pp $/;                              # back to default

say "-" x 10;

say "fieldname:" . <$fh>;               # till end of line

[download]

"\n"
HEADER
HEADER
HEADER
fieldname: BLA BLA
1
2
3
4
5
"\n"
----------
fieldname: BLA BLA

[download]

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^3: skip junk lines in csv before header by LanX
in thread skip junk lines in csv before header by karlberry

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