Minimal hack: exactly one quoted phrase, can't mix with other keywords
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Display_settings.search_all_terms = split(Display_settings.search_all_query)
if Display_settings.search_all_query:sub(1,1) == '"' then
-- support only a single quoted phrase by itself
assert(Display_settings.search_all_query:sub(#Display_settings.search_all_query) == '"')
Display_settings.search_all_terms = {Display_settings.search_all_query:sub(2, #Display_settings.search_all_query-1)}
else
Display_settings.search_all_terms = split(Display_settings.search_all_query)
end