R

`pcre_config` Report Configuration Options for PCRE

Report some of the configuration options of the version of PCRE in use in this R session.

pcre_config()

A named logical vector, currently with elements

`UTF-8`	Support for UTF-8 inputs. Required.
`Unicode properties`	Support for \p{xx} and \P{xx} in regular expressions. Desirable and used by some CRAN packages. As of PCRE2, always present with support for UTF-8.
`JIT`	Support for just-in-time compilation. Desirable for speed (but only available as a compile-time option on certain architectures).
`stack`	Does match recursion use a stack (`TRUE`, the default for PCRE1 and PCRE2 older than 10.30) or a heap? See the discussion at https://www.pcre.org/original/doc/html/pcrestack.html (Added in R 3.4.0.). No longer relevant and always `FALSE` in PCRE2 since version 10.30 which no longer uses function recursion to remember backtracking positions.

pcre_config()