key
can appear more that once.
Adds names to keys that will be used for column names in the output of extract_taxonomy
.
Uses non-standard evaluation to get the name of input variables.
validate_regex_key_pair(regex, key, multiple_allowed)
character
)
A regex with capture groupscharacter
)
A key corresponding to regex
character
)
Values of key_options
that can appear more than once.match.arg
on the key.