R/utils.R
pattern2list.RdConvert various input as pattern to a vector used in tokens_select, tokens_compound and kwic.
pattern2list( x, types, valuetype, case_insensitive, concatenator = "_", levels = 1, remove_unigram = FALSE, keep_nomatch = FALSE )
| valuetype | the type of pattern matching: |
|---|---|
| case_insensitive | logical; if |
| concatenator | concatenator that join multi-word expression in tokens object |
| levels | only used when pattern is a dictionary |
| remove_unigram | ignore single-word patterns if |