Well I may be a member of the idiots' club along with you, and this certainly isn't pretty, but is there a reason this wouldn't work?:
eval {
my $pos = $fh->tell;
$fh->print('1');
$fh->seek($pos);
};
my $ready_for_writing = ($@) ? 0 : 1;
update please ignore this and listen to Zaxo :-)
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