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Greetings-- I'm trying to flesh out my synonyms.txt file for a couple of Solr indexes, and I stumbled across something weird. I added these lines to synonyms.txt: co2, carbon dioxide ch4, methane The second line worked as expected: I restarted Solr, reindexed, and could search ch4 and methane as synonyms of each other. The first line did something weird. Before the change, I can get results for both CO2 and for "CARBON DIOXIDE" (just different results). After the change, searching CO2 got zero results, as did "CARBON DIOXIDE". So at least they're acting like synonyms, right? But why in the world do they both stop finding hits? Pre-change: CO2 225 hits "CARBON DIOXIDE" 130 hits CARBON DIOXIDE 1030 hits Post-change: CO2 0 hits "CARBON DIOXIDE" 0 hits CARBON DIOXIDE 1030 hits Also, if I want to be able to search for Greek letters by name (alpha, beta, etc.), is there a better way than to use synonmyms.txt? Δ,δ,delta TIA -- Thomas Dowling [log in to unmask]