Quoting problem or bug?

[pjaquiery]

I'm using a JScript regex replace to provide a value in a step as:

['%str%'.replace (/L"([[^"]]+?)"/, '$1')]

which fails to match my test string L"wanted text". However:

['%str%'.replace (/L"(.+?)"/, '$1')]

matches as expected.

Is this a quoting problem that I've forgotten about, or is there something else going on here? A sample project is attached.