В моем .bashrc у меня есть строка:

export SETTINGS=/home/user/settings.xml

Если я загружаю R в Bash, я могу получить доступ к этой переменной с помощьюSys.getenv функция:

Sys.getenv("SETTINGS")
"/home/user/settings.xml"

Если я открою R в Emacs (M-x R), SETTINGS будет пустым:

Sys.getenv("SETTINGS")
""

Что я пробовал:

adding the following to .emacs, based on How do I make Emacs recognize bash environment variables for compilation?

;; get environment vars from .bashrc
(let ((path (shell-command-to-string ". ~/.bashrc; echo -n $SETTINGS")))
  (setenv "SETTINGS" path))

opening up bash in emacs using M-x term

echo $SETTINGS         # works
R
Sys.getenv("SETTINGS") #works

If I open emacs from the terminal, the SETTINGS variable is available as expected. Opening emacs from the Applications menu (with either the command /usr/bin/emacs23 %F or emacs) does not work.

comparing output from session("env") when loading R in bash vs emacs, but nothing stands out other than (bash = <, emacs = >):

> INSIDE_EMACS=23.3.1,comint
6d5
< SETTINGS=/home/user/settings.xml
9c8
< SHLVL=1
> SHLVL=0
14a14
> PAGER=cat
16d15
< PAGER=/usr/bin/pager
19d17
< COLORTERM=gnome-terminal
25c23
< WINDOWID=14680069
> DESKTOP_AUTOSTART_ID=1020ce948b944a88113395253627645060000001863000
< TERM=xterm
> TERM=dumb

Могу ли я либо

access SETTINGS from within R in emacs-ess export SETTINGS somewhere that I can access it?