Nothing
## Using the following non-exported functions from 'tools':
## * .get_vignette_metadata()
## * vignette_is_tex()
## * find_vignette_product()
import_tools <- function(name, mode = "function",
envir = getNamespace("tools")) {
get(name, mode = mode, envir = envir)
}
stop_if_not <- function(...) {
res <- list(...)
n <- length(res)
if (n == 0L) return()
for (ii in 1L:n) {
res_ii <- .subset2(res, ii)
if (length(res_ii) != 1L || is.na(res_ii) || !res_ii) {
mc <- match.call()
call <- deparse(mc[[ii + 1]], width.cutoff = 60L)
if (length(call) > 1L) call <- paste(call[1L], "...")
stop(sQuote(call), " is not TRUE", call. = FALSE, domain = NA)
}
}
}
escFmtStr <- function(x) {
gsub("%", "%%", x, fixed = TRUE)
}
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