[PD] get dir of current pd

[Jonathan Wilkes]

On 07/30/2013 07:05 PM, Max wrote:
> Am 30.07.2013 um 23:32 schrieb Jonathan Wilkes <jancsika at yahoo.com>:
>> Max- Are you experiencing dropouts from the subprocess stalling, or are you saying you're trying to avoid the possibility of dropouts.  If it's the latter, then I'm having a hard time figuring out how two Pds connected through netsend would avoid dropouts.  Also, what causes the freezes?
> Cyrille has repeatedly said on this list that [pd~] is not the way to completely detach the two instances and that it one should use two instances instead. Never mind - I thought there was an elegant solution to launch another instance from a patch programmatically.
>
> m.
>

Attached is a patch to s_path.c that fleshes out a pd_getdirname 
function which
should return the executable's path on OSX, Windows, Linux, and FreeBSD.
I don't have FreeBSD running so I didn't test that one.

Question: should this function print an error, or should it send an 
empty symbol on error
and let the caller do that?  I'm currently doing the latter when using 
the function in
[pdinfo]-- that let's me tailor the error message to the relevant object 
which should help with
user error report.  (I.e., generate a "findable" error.)

Anyway if this looks good I'll go ahead and update [pdinfo] and add a 
"dir" method,
or maybe a "pddir" method.  (Suggestions welcome on method name.)

-Jonathan
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