[R] ESS (emacs speaks statistics) saving history

[Murat Tasan]

hi folks, i use ESS mode in emacs often to interact with R, and while
i know how to save a session transcript, i'm wondering how to save
just the history of the commands (i.e. identically to how R gives the
history save option from its native CLI).

if you use ESS with an R process, commands entered from a separate
buffer and sent to the process do not get registered with the R
history, and are thus not apparent when trying to save the history.
and saving the full transcript can be tedious, as i don't need the
output directly, but would like for others to be able to scroll
through my series of commands.

anyone else use ESS and have this problem, and maybe have a work-
around?