Convert various input as pattern to a vector used in tokens_select, tokens_compound and kwic.

Convert various input as pattern to a vector used in tokens_select, tokens_compound and kwic.

pattern2list(pattern, types, valuetype, case_insensitive,
  concatenator = "_", remove_unigram = FALSE)

Arguments

pattern	a character vector, list of character vectors, dictionary, collocations, or dfm. See pattern for details.
valuetype	the type of pattern matching: "glob" for "glob"-style wildcard expressions; "regex" for regular expressions; or "fixed" for exact matching. See valuetype for details.
case_insensitive	ignore the case of dictionary values if TRUE
concatenator	concatenator that join multi-word expression in tokens object
remove_unigram	ignore single-word patterns if TRUE

See also

pattern2id