[MIT-Scheme-devel] Patch to add Mac OS X app command line option

[Eric Christopherson]

The 9.0.1 Mac OS X package has code to chdir to the user's home
directory upon launch. While this is appropriate when launching it as
an application, it is unexpected when running the mit-scheme binary
from the command line.

With encouragement from Taylor Campbell, I've added a command line
option --macosx-application, and made it so the program doesn't change
to the home directory unless the option is supplied. I've also caused
macosx-starter to supply this option when the program is launched as
an application. The patch attached.

I'm not sure this is the most elegant solution, but I've looked a
little for OS X mechanisms to determine whether a binary is being run
as part of an application or on the command line, and haven't found
any. This option is at least similar in spirit to the existing --emacs
option.

Now the mit-scheme binary can be launched from the command line
without it changing the current directory. However, I've found that
just symlinking the binary into a directory in my $PATH doesn't
suffice, because then mit-scheme can't find its libraries. However, if
I put the actual directory where the binary resides in $PATH, or if I
invoke it with a full pathname, it works. Would it be possible for the
OS X build to include a shell script to launch it?

Also, I found that configure didn't detect my X11 headers and/or
libraries. I had to supply --x-libraries=/usr/X11/lib
--x-includes=/usr/X11/include. Perhaps someone could look into that.

Finally, it might be nice if it were possible to specify at launch
time whether to open Edwin in an X window or the current terminal.

mit-scheme-macosx-application.diff
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