Your error is in your subject line: getline rather than readline is used
on Windows. (readline was not written for Windows and depends on a
'curses' library not available for Windows terminals let alone RGui. A
considerable amount of time was spent trying to use it, unsuccessfully.)
On 13/0
Hello!
Ever since I used R on Windows (RGui) I am missing the ability to search the
command history (Cntrl+R (reverse-search-history) in BASH, for example). Is
there a particular reason for having this function disabled? Another feature
would be word-wise delete (kill-word, backward-kill-word).