[5.x] Fix error with disallowed words in Comb search driver #11336
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This pull request fixes an issue with the Comb/
local
search driver where a search term with a disallowed word (eg:soup -tomato
) may cause an error if the search index contains a field with an array value.When the "actual searching" takes place, any arrays are flattened, so I've applied that same logic to the disallowed words feature. I've also added a test.
Fixes #11328.