library("R.utils")
opager <- options(pager=mpager)
file <- system.file("DESCRIPTION", package="R.utils")
cat("Displaying: ", file, ":\n", sep="")
displayCode(file)
file <- system.file("NEWS.md", package="R.utils")
cat("Displaying: ", file, ":\n", sep="")
displayCode(file, numerate=FALSE, lines=100:110, wrap=65)
file <- system.file("NEWS.md", package="R.utils")
cat("Displaying: ", file, ":\n", sep="")
displayCode(file, lines=100:110, wrap=65, highlight=c(101,104:108))
con <- file(file)
displayCode(con, lines=1:10)
displayCode(file, lines=1:10, pager=mpager)
displayCode(file, lines=1:10, pager="mpager")
## Exception handling
res <- try(displayCode(file, lines=-10:110), silent=TRUE)
stopifnot(inherits(res, "try-error"))
res <- try(displayCode(file, wrap=integer(0)), silent=TRUE)
stopifnot(inherits(res, "try-error"))
res <- try(displayCode(file, wrap=55:66), silent=TRUE)
stopifnot(inherits(res, "try-error"))
res <- try(displayCode(2L), silent=TRUE)
stopifnot(inherits(res, "try-error"))
options(opager)
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