R: Check pandoc availabilty and version

pandoc_available {rmarkdown} | R Documentation

## Check pandoc availabilty and version

### Description

Determine whether pandoc is currently available on the system (optionally checking for a specific version or greater). Determine the specific version of pandoc available.

### Usage

    pandoc_available(version = NULL, error = FALSE)

    pandoc_version()

### Arguments

`version` | Required version of pandoc
`error` | Whether to signal an error if pandoc with the required version is not found

### Details

The system environment variable PATH as well as the version of pandoc shipped with RStudio (its location is set via the environment variable RSTUDIO_PANDOC by RStudio products like the RStudio IDE, RStudio Server, Shiny Server, and RStudio Connect, etc) are scanned for pandoc and the highest version available is used. Please do not modify the environment varaible RSTUDIO_PANDOC unless you know what it means.

### Value

`pandoc_available` returns a logical indicating whether the required version of pandoc is available. `pandoc_version` returns a `numeric_version` with the version of pandoc found.

### Examples

    ## Not run:
    library(rmarkdown)

    if (pandoc_available())
      cat("pandoc", as.character(pandoc_version()), "is available!\n")

    if (pandoc_available("1.12.3"))
      cat("requried version of pandoc is available!\n")

    ## End(Not run)

[Package rmarkdown version 1.6 Index]