-DATASET CSV empty

--

-CASE stem_function
-LOAD_DYNAMIC_EXTENSION fts
-STATEMENT RETURN STEM('knows', 'english')
---- 1
know
-STATEMENT RETURN STEM('knows', 'arabic')
---- 1
knows
-STATEMENT RETURN STEM('knows', 'none')
---- 1
knows
-STATEMENT RETURN STEM('knows', 'wrong')
---- error
Runtime exception: Unrecognized stemmer 'wrong'. Supported stemmers are: ['arabic, basque, catalan, danish, dutch, english, finnish, french, german, greek, hindi, hungarian, indonesian, irish, italian, lithuanian, nepali, norwegian, porter, portuguese, romanian, russian, serbian, spanish, swedish, tamil, turkish'], or use 'none' for no stemming.
-STATEMENT RETURN STEM('中文', 'english')
---- 1
中文
-STATEMENT RETURN STEM('中文', 'none')
---- 1
中文
-STATEMENT RETURN STEM('kitaplar', 'turkish')
---- 1
kitap
-STATEMENT UNWIND ['alice', 'bob', 'carol'] as t RETURN STEM(t, 'porter')
---- 3
alic
bob
carol
