thanks for the recommendation. Following your suggestion I stumbled upon Tie::STDOUT (by David Cantrell) which does the trick:
#!/usr/bin/env perl
use strict;
use warnings;
use Tie::STDOUT
print => sub {
my @params = @_;
my @calhis = ();
my $i = 2; # to avoid printing stacktrace for Tie::STDOUT
# build a kind of stacktrace:
while(
my ($package, $filename, $line, $subroutine, $hasargs,
$wantarray, $evaltext, $is_require, $hints, $bitmask,
$hinthash) = caller($i++)
){
push(@calhis, "$filename, line $line : $package".'::'."$subrou
+tine");
}
# print the stacktrace with whatever needs to be printed
print join("->", @calhis), " : ", @_;
}
;
print "from main\n";
sub1("main");
sub2("main");
sub sub1 {
my $via = $_[0];
print "from sub1 via $via\n";
}
sub sub2 {
sub1("sub2");
}
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