Gives the current default settings used by the ICU library.


stri_info(short = FALSE)



logical; whether or not the results should be given in a concise form; defaults to TRUE


If short is TRUE, then a single string providing information on the default character encoding, locale, and Unicode as well as ICU version is returned.

Otherwise, a list with the following components is returned:

  • Unicode.version – version of Unicode supported by the ICU library;

  • ICU.versionICU library version used;

  • Locale – contains information on default locale, as returned by stri_locale_info;

  • Charset.internal – fixed at c('UTF-8', 'UTF-16');

  • Charset.native – information on the default encoding, as returned by stri_enc_info;

  • ICU.system – logical; TRUE indicates that the system ICU libs are used, otherwise ICU was built together with stringi;

  • ICU.UTF8 – logical; TRUE if the internal U_CHARSET_IS_UTF8 flag is defined and set.


Marek Gagolewski and other contributors

See Also#

The official online manual of stringi at

Gagolewski M., stringi: Fast and portable character string processing in R, Journal of Statistical Software 103(2), 2022, 1-59, doi:10.18637/jss.v103.i02