I changed the double-quotes to single-quotes and got a reasonable result. Which to me suggests that the shell does some processing with double-quoted strings before it reaches perl

Whatever shell you are using, try this:

> echo 'hello $1'
hello $1
> echo "hello $1"
hello

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In reply to Re: Choosing regex delimiters by jethro
in thread Choosing regex delimiters by xyzzy

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