Precedence Rules for '$' and '^'

Hi there,

I am author of lexertl (http://www.benhanson.net/lexertl.html), a
lexer generator library, and I have recently added support for '^' and
'$'. As position matching in regex is not described in any books I
have looked at, does anyone know what the precedence rules should be?
If an earlier rule starts with '$', does that mean that a subsequent
rule starting with '^' has the '^' ignored?

Thanks,

Ben Hanson
.

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