Thanks for this, it's clear and explains why the (?{...}) solution didn't (and could never) work.

I've not used \G and /c before. From reading perlre I now understand that \G essentially 'anchors' that point to index pos() into the string. I'm a little confused by the description for the /c modifier. From perlre v5.24:

c - keep the current position during repeated matching

and from the referenced perlretut

A failed match or changing the target string resets the position. If you don't want the position reset after failure to match, add the "//c", as in "/regexp/gc".

I assume then, should the data I'm parsing with the regex be well formatted, then pos() will never be reset and so the /c modifier is not needed? But were any matches fail, things would break

Is this a correct understanding of \G and /c?

In reply to Re^2: Modifying pos() from within (?{...}) by mxb
in thread Modifying pos() from within (?{...}) by mxb

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