Hello,

I am trying to pass hex encoded characters as args from the command line, one to use as a search pattern, and one to use as a replacement in s///. While the script expands the hex code as desired to match the associated characted, the hex code is interpreted literally for the replacement.

I tried different ways of quoting to no avail. Anyone know why it does this and how to get it to substitute the character? It is a mystery to me why it works for the match, but not the sub.

 

#!/usr/bin/perl

use strict;

my ($arg_1, $arg_2) = @ARGV;
my $var;

$var = 'a';
$var =~ s@\x61@\x41@;       # works
print "$var\n";

$var = 'a';
$var =~ s@$arg_1@$arg_2@;   # no work
print "$var\n";

exit;


./arg.pl '\x61' '\x41'
A
\x41

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In reply to hex code passed from command line is interpreted literally in substitution by Allasso

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