I was bitten by new keywords before. However, I think that
_if_ users are asked _before_ a new keyword is introduced
(maybe with some tool that will detect the places in a source
file) and noone vetoes within a well-defined period of time,
then introducing new keywords like "while" and/or "loop"
and possibly others will provide a benefit in usability that
certainly outweighs the disadvantages. Users need to be
aware of quoting keywords anyway, so the problem does not
get much worse if there are a handfull more keywords.
Andreas
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