Item8644: SearchAlgorithms alter search tokens

Search terms are stored as a token array, the $query->{token} ref in Search.pm. I want to pass that array to Meta's summary creator, but along the way the token values are changed in case a minus operator is used.

For instance, if the query is "users -access", the tokens is first ['users', '!access'], then becomes ['users', 'access'].

This line in Forking.pm is the culprit (and similarly in PurePerl.pm):

$invertSearch = ( $token =~ s/^\!//o );

It looks like a copy should be made instead:

my $tokenCopy = $token;
...
$invertSearch = ( $tokenCopy =~ s/^\!//o );

Unit tests are still happy this way.

-- ArthurClemens - 28 Feb 2010

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