I have a script that reads in lines from a file. One of the lines is this:

@SRR254172.1 ILLUMINA-20A1B2_0004_FC6282EAAXX:6:1:1433:941 length=160

If I use the following test, it fails the test
if ($line2 =~ /^\@\S+\s+ILLUMINA\S+:(\d+):(\d+):(\d+):(\d+)\s+length=1
+60/) {
    $x2 = $3;
    $y2 = $4;
} else {
    die "problem: line is $line\n";
    #problem: now line is @SRR254172.1 ILLUMINA-20A1B2_0004_FC6282EAAX
+X:6:1:1433:941 length=160
}

[download]

I think that the problem has to do with the @, but I have escaped the @ in my regular expression. Can someone explain to me how I should match this line with a regular expression that includes @?

Thank you.

Eric

In reply to trouble with @ in a regular expression by efoss

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