[R-SIG-Mac] Disable readline echo in R for mac GUI

Jeroen Ooms jeroenoom@ @ending from gm@il@com
Thu Nov 15 14:06:40 CET 2018

When prompting the user for a password, we need to temporarily disable
echo. In a tty we can call posix stty -echo (example below). The
RStudio GUI has a native password entry function that can be triggered
via getOption('askpass'). Is there simple method to prompt for a
password in the R for Mac GUI (without depending on shiny or tcltk)?

readline_password <- function(prompt = "Please enter password\n"){
    if(system('stty -echo') == 0){
      on.exit(system('stty echo'))

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