in reply to Re: hex code passed from command line is interpreted literally in substitution
in thread hex code passed from command line is interpreted literally in substitution

thanks, this works: 

$var = 'a';
$arg_2 =~ s@\\x([0-9]+)@pack("H*", $1)@ge;
$var =~ s@$arg_1@$arg_2@;   # works now
print "$var\n";

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Two things I am wondering though,

1) why is this not needed on the search pattern?

2) what other kinds of surprises might I expect in passing regexes on the command line?
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Re^3: hex code passed from command line is interpreted literally in substitution
by ikegami (Patriarch) on Mar 06, 2011 at 00:43 UTC

    why is this not needed on the search pattern?

    The regex is compiled after interpolation.

    what other kinds of surprises might I expect in passing regexes on the command line?

    You just asked why there was no surprise with the regex.

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