F.3 Environment Variables and Command Line Arguments.
On Mac OS X, when Emacs is run in a terminal, it inherits the values
of environment variables from the shell from which it is invoked.
However, when it is run from the Finder as a GUI application, it only
inherits environment variable values defined in the file
~/.MacOSX/environment.plist that affects all the applications
invoked from the Finder or the open command.
Command line arguments are specified like
/Applications/Emacs.app/Contents/MacOS/Emacs -geometry 80x25 &
if Emacs is installed at /Applications/Emacs.app. If Emacs is
invoked like this, then it also inherits the values of environment
variables from the shell from which it is invoked.
On Mac OS Classic, environment variables and command line arguments
for Emacs can be set by modifying the ‘STR#’ resources 128 and
129, respectively. A common environment variable that one may want to
set is ‘HOME’.
The way to set an environment variable is by adding a string of the
to resource ‘STR#’ number 128 using
ResEdit. To set up the
program to use unibyte characters exclusively, for example, add the
Although Emacs on Mac does not support X resources (see X Resources) directly, one can use the Preferences system in place of X
resources. For example, adding the line
to ~/.Xresources in X11 corresponds to the execution of
defaults write org.gnu.Emacs Emacs.cursorType bar
on Mac OS X. One can use boolean or numeric values as well as string
values as follows:
defaults write org.gnu.Emacs Emacs.toolBar -bool false
defaults write org.gnu.Emacs Emacs.lineSpacing -int 3
Try M-x man RET defaults RET for the usage of the
defaults command. Alternatively, if you have Developer
Tools installed on Mac OS X, you can use Property List Editor to edit
the file ~/Library/Preferences/org.gnu.Emacs.plist.