Internal helper to replace special characters.
replace_special_characters_internal(string, transliterations, case)A character vector.
A string (for example names of a data frame).
A character vector (if not NULL). The entries of this argument
need to be elements of stringi::stri_trans_list() (like "Latin-ASCII", which is often useful) or names of lookup tables (currently
only "german" is supported). In the order of the entries the letters of the input
string will be transliterated via stringi::stri_trans_general() or replaced via the
matches of the lookup table. When named character elements are supplied as part of `transliterations`, anything that matches the names is replaced by the corresponding value.
You should use this feature with care in case of case = "parsed", case = "internal_parsing" and
case = "none", since for upper case letters, which have transliterations/replacements
of length 2, the second letter will be transliterated to lowercase, for example Oe, Ae, Ss, which
might not always be what is intended. In this case you can make usage of the option to supply named elements and specify the transliterations yourself.
Length one character, from the input options of to_any_case.
Malte Grosser, malte.grosser@gmail.com