Hello monks, I'm trying to write a regex to switch some ports in a design. I have an array of values, one of them is say: 
\u0/r0/rcnt[3]

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I then have a cell like so: 
 NOR2X0 U2905 ( .IN1(\u0/r0/rcnt[3] ), .IN2(\u0/r0/n43 ), .QN(n1699) )
+;

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I need to switch the values in after the brackets in .IN1 and .IN2 so the output should be: 
  NOR2X0 U2905 ( .IN1(\u0/r0/n43 ), .IN2(\u0/r0/rcnt[3] ), .QN(n1699) 
+);

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The part of the code doing that right now is: 
foreach my $val (@nets_q) {
    $data =~ s/( [NOR|OR].*.IN1\()($val)(\).*IN2\()([^\)]*)(.*)/$1$4$3
+$2$5/g;
}

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But this throws an error: 
Unrecognized escape \u passed through in regex;

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So it is considering the "\u" part of "\u0/ro/rcnt3" as an escape character. How would I go about doing this? Is this the right way? Thanks in advance!

In reply to Passing a variable to a regex by mavericknik

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