Quote regular expression metacharacters

Escapes every character that has a meaning in a PCRE2 pattern, so that the result matches x literally, as Go's QuoteMeta() does. The result is also literal under the x flag, which gives whitespace and # a meaning. To match a whole pattern literally, literal = TRUE in re_compile() is simpler.

Usage

re_escape(x)

Arguments

x

A character vector. NA stays NA.

Value

A character vector as long as x, in UTF-8.

Examples

re_escape("1+1=2 (really?)")
#> [1] "1\\+1=2\\ \\(really\\?\\)"