Report Configuration Options for PCRE (original) (raw)
| pcre_config {base} | R Documentation |
|---|
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 athttps://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](../../base/help/extSoftVersion.html) for the PCRE version.
Examples
pcre_config()
[Package _base_ version 4.6.0 Index]