Add MMUseMouseTime, Revise #77

[splhack]

MMUseMouseTime allows to override the time threshold for detecting multiple
mouse down events using Vim mousetime option.

$ defaults write org.vim.MacVim MMUseMouseTime -bool TRUE

[djjcast]

Thanks for the update! I think this looks like a good solution to the problem.

Although, we should be using mach_absolute_time() instead of NSDate to calculate the time interval between mouse clicks. I'm not sure if it's still the case, but calls to NSDate are not guaranteed to return times in chronological order:

http://stackoverflow.com/questions/7854932/will-two-nsdate-date-following-each-other-always-return-different-times

[splhack]

It is not the case. time resolution of mouse click or trackpad tap is 50~100ms-ish.

[djjcast]

Okay, I just installed the update and everything's working as expected; setting mousetime to zero disables multi clicks and setting mousetime to a really large value also works as expected. Thanks again.

Here's a vimscript snippet that sets MMUseMouseTime:

if has('gui_running') && has('macunix')
    call system('defaults write org.vim.MacVim MMUseMouseTime -bool TRUE')
endif

[splhack]

Thank you for the test. But I don't think the snippet is needed. It just one time execution on Terminal, it's persistent setting on the system.

[djjcast]

Yeah, it's a one time thing that should go in a "new-system initialization script". The snippet's just a convenience hack so I don't have to think about setting MMUseMouseTime after cloning my Vim config to a new system.