The regex parser has some rather convoluted heuristics that it follows to decide whether $ or @ is followed by a variable name. One side effect of this is that /[$]/ is an error.

The only real documentation of this deep magic is in the source code (simply search for "weight" as it is only used on that code -- in toke.c, BTW).

        - tye (but my friends call me "Tye")

In reply to (tye)Re: @ in regex, or not? by tye
in thread @ in regex, or not? by JPaul

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