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 | require 'formula'
class Emacs < Formula
  homepage 'http://www.gnu.org/software/emacs/'
  url 'http://ftpmirror.gnu.org/emacs/emacs-24.3.tar.gz'
  mirror 'http://ftp.gnu.org/pub/gnu/emacs/emacs-24.3.tar.gz'
  sha256 '0098ca3204813d69cd8412045ba33e8701fa2062f4bff56bedafc064979eef41'
  skip_clean 'share/info' # Keep the docs
  option "cocoa", "Build a Cocoa version of emacs"
  option "srgb", "Enable sRGB colors in the Cocoa version of emacs"
  option "with-x", "Include X11 support"
  option "use-git-head", "Use Savannah (faster) git mirror for HEAD builds"
  option "keep-ctags", "Don't remove the ctags executable that emacs provides"
  option "japanese", "Patch for Japanese input methods"
  if build.include? "use-git-head"
    head 'http://git.sv.gnu.org/r/emacs.git'
  else
    head 'bzr://http://bzr.savannah.gnu.org/r/emacs/trunk'
  end
  if build.head? or build.include? "cocoa"
    depends_on :autoconf
    depends_on :automake
  end
  depends_on 'pkg-config' => :build
  depends_on :x11 if build.include? "with-x"
  depends_on 'gnutls' => :optional
  fails_with :llvm do
    build 2334
    cause "Duplicate symbol errors while linking."
  end
  def patches
    p = {
      # Fix default-directory on Cocoa and Mavericks.
      # Fixed upstream in r114730 and r114882.
      :p0 => [ DATA ],
      # Make native fullscreen mode optional, mostly from
      # upstream r111679
      :p1 => [ 'https://gist.github.com/scotchi/7209145/raw/a571acda1c85e13ed8fe8ab7429dcb6cab52344f/ns-use-native-fullscreen-and-toggle-frame-fullscreen.patch' ]
    }
    # "--japanese" option:
    # to apply a patch from MacEmacsJP for Japanese input methods
    if build.include? "cocoa" and build.include? "japanese"
      p[:p0].push("http://sourceforge.jp/projects/macemacsjp/svn/view/inline_patch/trunk/emacs-inline.patch?view=co&revision=583&root=macemacsjp&pathrev=583")
    end
    p
  end unless build.head?
  # Follow MacPorts and don't install ctags from Emacs. This allows Vim
  # and Emacs and ctags to play together without violence.
  def do_not_install_ctags
    unless build.include? "keep-ctags"
      (bin/"ctags").unlink
      (share/man/man1/"ctags.1.gz").unlink
    end
  end
  def install
    # HEAD builds blow up when built in parallel as of April 20 2012
    ENV.j1 if build.head?
    args = ["--prefix=#{prefix}",
            "--without-dbus",
            "--enable-locallisppath=#{HOMEBREW_PREFIX}/share/emacs/site-lisp",
            "--infodir=#{info}/emacs"]
    if build.with? 'gnutls'
      args << '--with-gnutls'
    else
      args << '--without-gnutls'
    end
    system "./autogen.sh" if build.head?
    if build.include? "cocoa"
      # Patch for color issues described here:
      # http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8402
      if build.include? "srgb"
        inreplace "src/nsterm.m",
          "*col = [NSColor colorWithCalibratedRed: r green: g blue: b alpha: 1.0];",
          "*col = [NSColor colorWithDeviceRed: r green: g blue: b alpha: 1.0];"
      end
      args << "--with-ns" << "--disable-ns-self-contained"
      system "./configure", *args
      system "make"
      system "make install"
      prefix.install "nextstep/Emacs.app"
      # Don't cause ctags clash.
      do_not_install_ctags
      # Replace the symlink with one that avoids starting Cocoa.
      (bin/"emacs").unlink # Kill the existing symlink
      (bin/"emacs").write <<-EOS.undent
        #!/bin/bash
        #{prefix}/Emacs.app/Contents/MacOS/Emacs -nw  "$@"
      EOS
    else
      if build.include? "with-x"
        # These libs are not specified in xft's .pc. See:
        # https://trac.macports.org/browser/trunk/dports/editors/emacs/Portfile#L74
        # https://github.com/Homebrew/homebrew/issues/8156
        ENV.append 'LDFLAGS', '-lfreetype -lfontconfig'
        args << "--with-x"
        args << "--with-gif=no" << "--with-tiff=no" << "--with-jpeg=no"
      else
        args << "--without-x"
      end
      system "./configure", *args
      system "make"
      system "make install"
      # Don't cause ctags clash.
      do_not_install_ctags
    end
  end
  def caveats
    s = ""
    if build.include? "cocoa"
      s += <<-EOS.undent
        Emacs.app was installed to:
          #{prefix}
         To link the application to a normal Mac OS X location:
           brew linkapps
         or:
           ln -s #{prefix}/Emacs.app /Applications
         A command line wrapper for the cocoa app was installed to:
          #{bin}/emacs
      EOS
    end
    return s
  end
end
__END__
--- src/emacs.c.orig	2013-02-06 13:33:36.000000000 +0900
+++ src/emacs.c	2013-11-02 22:38:45.000000000 +0900
@@ -1158,10 +1158,13 @@
   if (!noninteractive)
     {
 #ifdef NS_IMPL_COCOA
+      /* Started from GUI? */
+      /* FIXME: Do the right thing if getenv returns NULL, or if
+         chdir fails.  */
+      if (! inhibit_window_system && ! isatty (0))
+        chdir (getenv ("HOME"));
       if (skip_args < argc)
         {
-	  /* FIXME: Do the right thing if getenv returns NULL, or if
-	     chdir fails.  */
           if (!strncmp (argv[skip_args], "-psn", 4))
             {
               skip_args += 1;
 |