Hi Phil,

> REBOL/View 1.2.8.3.1 3-Aug-2002  (View Beta)

The error is in the alter function. It is the same bug found by Bolka in the
beta 2.5 Core.

A more fast alter function:

alter: func [
    {If a value is not found in a series, append it; otherwise, remove it.
Patched for 1.2.8}
    series [series! port!]
    value
][
    if not remove find series value [
     insert tail series value
    ]
    series
]

Ciao
Romano


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