View the most recent changes for the emacs-app port at: emacs-app.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for emacs-app.
The raw portfile for emacs-app 23.1 is located here:
http://emacs-app.darwinports.com/dports/aqua/emacs-app/Portfile
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Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/emacs-app

The emacs-app Portfile 56063 2009-08-24 00:39:48Z ryandesign macports.org $

PortSystem 1.0
Name: emacs-app
Version: 23.1
Category: aqua editors
Maintainers: css
Description: The GNU Emacs text editor (Cocoa version)

Long Description: GNU Emacs is a self-documenting, customizable, extensible real-time display editor. This is a port of the latest GNU Emacs source to the OpenStep (or NeXTstep) APIs, as implemented by Cocoa on OS X. It differs from Carbon ports of GNU Emacs in that it makes a more concerted attempt from the ground up to follow OS X desktop and UI conventions.

# Note that this distribution can support GNUstep as well, but that
# configuration is untested at this time.

Platform: darwin
Homepage: http://emacs-app.sourceforge.net/
Master Sites: ftp://ftp.gnu.org/gnu/emacs/
distname emacs-${version}
use_bzip2 yes
Checksums: md5 17f7f0ba68a0432d58fa69d05a2225be sha1 5f2d5dfcc17e7627ea752f675c605fe37c9c145c

depends_lib port:ncurses
use_parallel_build yes

configure.args --with-ns --without-x

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
%  sudo port install emacs-app  
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
--->  Verifying checksum for emacs-app
--->  Extracting emacs-app
--->  Configuring emacs-app
--->  Building emacs-app with target all

--->  Staging emacs-app into destroot

--->  Installing emacs-app

- 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 with these commands:

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

 Where to find more information: