Re: SWI-Prolog MacOS app

One thing I like about the R GUI is that if you do
	% open <<directory>> -a R
it starts up with <<directory>> as its current directory.

As for opening from Applications (and I most earnestly hope that
you mean ~/Applications), I would expect the program to save
portions of its state in ~/Library/SWIProlog/ (so that
File|Recent works).  So it doesn't much matter where it starts
the first time you run it, as long as the second time it picks
up where it left off.

Starting a new instance would I think come as a surprise to most
Mac users.  I have a several programming language implementations
on my Mac, and none of them start a new instance when you open a
second file.  They all just open a new editing window (or tab).

As for file extensions, it's a matter of Cmd-I and a few clicks
to associate either a single file or all instances of an
extensions with the application of your choice, so I wouldn't
worry about making the perfect extension list.  (I have no idea
why '.pl' files default to TextWrangler on my machine.)



On 17/08/2013, at 12:16 AM, Jan Wielemaker wrote:

> Hi,
> 
> A real Prolog MacOS app is getting close to testing phase.  One of
> the remaining issues is integration with the finder.  Below are
> some thoughts about that.  Comments from Mac users is welcome.
> 
>  - Currently, I register Prolog for .pl and .prolog files (still need
>    to figure out how to get an icon there).   More?
> 
>  - Double clicking always sends a message to the already running app,
>    while I think you want to load the file into a new instance.  So,
>    if a running app gets a file-open-event, it now runs
> 
> 	open -n -a <myself> <file>
> 
>    Does that make sense?
> 
>  - What if you just start Prolog from the Applications folder, it
>    now starts in this directory.  That is most likely not what you
>    want.  In Windows it creates a Prolog directory under the
>    `personal' folder and starts there.  Is there a similar convention
>    for the Mac?
> 
> 	Cheers --- Jan
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