Using awk printf to urldecode text

Question

I\'m using awk to urldecode some text.

If I code the string into the printf statement like printf \"%s\", \"\\x3D\" it correct

Answer 1

GNU awk

#!/usr/bin/awk -fn
@include "ord"
BEGIN {
  RS = "%.."
}
{
  printf RT ? $0 chr("0x" substr(RT, 2)) : $0
}

Or

#!/bin/sh
awk -niord '{printf RT?$0chr("0x"substr(RT,2)):$0}' RS=%..

Decoding URL encoding (percent encoding)