On Thu, Apr 17, 2014 at 5:14 PM, Magnus Henkel wrote:
> I'm writing a python script which starts MacVim as the editor for a couple of 
> files. These files will be scanned (and copied into other files) while they 
> are open.
> The background processing for a certain file stops when it is closed manually.
>
> I'm trying to use the vim server capabilities, since obviously I don't want 
> to fire up the MacVim application several times.
>
> I discovered that there are (at least) two ways of starting MacVim and both 
> are not working correctly for me:
> Using the path /Applications/MacVim.app/Contents/MacOS/MacVim from python 
> opens a white window without any content on top of the other window showing 
> the text file. It also starts up the application more than once and it keeps 
> opening white windows when more files are opened.
>
> Using the path /usr/bin/mvim doesn't show this behavior but it makes it more 
> awkward to track the process from python (that might be more python than vim 
> related). Using subprocess.call doesn't wait for the MacVim window of current 
> text file to be closed (as it should and it does with the other path).
>
> The subprocess.Popen records a PID which is not the one of the text file but 
> of some other vim "instance" (maybe it is the server, ps aux only shows 
> "(Vim)" and the text file opened previously gets another PID).
>
> I wonder if these issues are related to how the vim server starts up and if 
> there is a way to deal with the server in a more "clean" way.
>
> I have been posting a question related to the same problem on stackoverflow:
>
> http://stackoverflow.com/questions/23067612/python-cant-get-hold-of-real-process-id-with-subprocess

Check out ":h macvim-start".

I *think* what you are looking for is:

/Applications/MacVim.app/Contents/MacOS/Vim -fg

Björn

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