pcre_config {base}R Documentation

Report Configuration Options for PCRE

Description

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

Usage

pcre_config()

Value

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, and may be unused as unreliable on some of those, e.g. arm64).

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.

See Also

extSoftVersion for the PCRE version.

Examples

pcre_config()
[Package base version 4.5.0 Index]