Still don't know why I couldn't get it to realize it had hit end of string

It's seen as somewhat of a bug. It happens when the search expression can match a zero length string. In the followig, the parens indicate what the three passes of your earlier s/// matches: 

(a@)(b)()

[download]

Or in terms of @- and @+:
pass@-@+
102
223
333

The /g loop ends when the fourth pass matches the same thing as the third pass and pos+1 is beyond the end of the string.

In reply to Re^5: Splitting on escapable delimiter by ikegami
in thread Splitting on escapable delimiter by Daryn

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