View the most recent changes for the emacs-app-devel port at: emacs-app-devel.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for emacs-app-devel.
The raw portfile for emacs-app-devel 20091101 is located here:
http://emacs-app-devel.darwinports.com/dports/aqua/emacs-app-devel/Portfile
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The emacs-app-devel Portfile 60082 2009-11-01 13:40:22Z css macports.org $

PortSystem 1.0

Name: emacs-app-devel
Version: 20091101

Category: aqua editors
Maintainers: css
Description: The GNU Emacs text editor, recent CVS development version
Long Description: GNU Emacs is a self-documenting, customizable, extensible real-time display editor. Users new to Emacs will be able to use basic features fairly rapidly by studying the tutorial and using the self-documentation features. Emacs also has an extensive interactive manual browser. It is easily extensible since its editing commands are written in Lisp. This port uses the CVS version of the code from a recent date, which includes the NextStep (aqua) option

Platform: darwin freebsd
Homepage: http://www.gnu.org/software/emacs/emacs.html

fetch.type cvs
cvs.root :pserver:anonymous cvs.savannah.gnu.org:/sources/emacs
cvs.date 2009-11-01
cvs.module emacs
worksrcdir emacs

configure.args --with-ns --without-x --without-dbus
depends_lib port:ncurses
use_parallel_build yes

destroot {
system "cd ${worksrcpath} && make install"
xinstall -m 755 -d ${destroot}${applications_dir}
file copy ${worksrcpath}/nextstep/Emacs.app ${destroot}${applications_dir}
file copy ${filespath}/site-start.el ${destroot}${applications_dir}/Emacs.app/Contents/Resources/site-lisp
}

post-destroot {
reinplace "s|__PREFIX__|${prefix}|g" ${destroot}${applications_dir}/Emacs.app/Contents/Resources/site-lisp/site-start.el
}

If you haven't already installed Darwin Ports, you can find easy instructions for doing so at the main Darwin Ports page.
Once Darwin Ports has been installed, in a terminal window and while online, type the following and hit return:

%  cd /opt/local/bin/portslocation/dports/emacs-app-devel
%  sudo port install emacs-app-devel  
Password: 

You will then be prompted for your root password, which you should enter. You may have to wait for a few minutes while the software is retrieved from the network and installed for you. Y ou should see something that looks similar to:

--->  Fetching emacs-app-devel
--->  Verifying checksum for emacs-app-devel
--->  Extracting emacs-app-devel
--->  Configuring emacs-app-devel
--->  Building emacs-app-devel with target all

--->  Staging emacs-app-devel into destroot

--->  Installing emacs-app-devel

- Make sure that you do not close the terminal window while Darwin Ports is working. Once the software has been installed, you can find further information about using emacs-app-devel with these commands:

%  man emacs-app-devel
%  apropos emacs-app-devel
%  which emacs-app-devel
%  locate emacs-app-devel

 Where to find more information: