I've had cause to run some code from the console that usually only gets run on a webserver. In its usual environment, it doesn't give me warnings. But, from the console, I get a warning...

$result =~ s/(Mr(s)?) a/\1 A/s;

\1 better written as $1 at...

[download]

I have always been under the impression (or perhaps illusion) that \1 should be used within the regular expression and $1 outside of it. Like this:

if ($test =~ /some_test/) {
    $foo = $1;
}

[download]

Has something changed in the preferred way to capture in a regular expression, or have I been doing it wrong all the time?

In reply to Capture Groups by Bod

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