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#' escapeRegex
#'
#' Escapes all symbols in a string which have a special meaning in regular
#' expressions.
#'
#'
#' @param x String or vector of strings that should be escaped.
#' @return The escaped strings.
#' @author Jan Philipp Dietrich
#' @seealso \code{\link[base]{grep}}
escapeRegex <- function(x)
{
return(gsub("([.|()\\^{}+$*?]|\\[|\\])", "\\\\\\1", x))
}
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