Escapes any characters that would have special meaning in a reqular expression.

Escapes any characters that would have special meaning in a reqular expression.

escapeRegex(string)

Arguments

string

string being operated on.

Value

The value of the string with any characters that would have special meaning in a reqular expression escaped.

Details

escapeRegex will escape any characters that would have special meaning in a reqular expression. For any string grep(regexpEscape(string), string) will always be true.

Note

Note that this function was copied literally from the Hmisc package (to prevent importing the entire package for one line of code).

See also

grep, Hmisc, https://hbiostat.org/R/Hmisc/, https://github.com/harrelfe/Hmisc

Author

Charles Dupont
Department of Biostatistics
Vanderbilt University

Maintainer: Gjalt-Jorn Peters gjalt-jorn@userfriendlyscience.com

Examples

string <- "this\\(system) {is} [full]."
escapeRegex(string)
#> [1] "this\\\\\\(system\\) \\{is\\} \\[full\\]\\."
# \dontshow{
if(!any(grep(escapeRegex(string), string))) {
  stop("function escapeRegex failed test")
}
# }