#' Font selector, internal helper function
#'
#' Will return the first available font
#'
#' @param ... list of fonts requested
#' @export
fonts_selector <- function(...) {
req_fonts <- unlist(list(...))
available <- intersect(req_fonts, names(grDevices::postscriptFonts()))
if(length(available) == 0)
stop("Non of the requested font were found: ", req_fonts)
available[1]
}
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