Prompt to load a locked session

[kamykaze]

User case scenario:

• working on a project, session saved as 'myproject'
• to restore the project the next day, I use tmuxinator to reload all my environments, server scripts, etc., including 'vi -c "OpenSession myproject" '
• this works fine if vim was properly quit, but throws a warning when the session is locked due to a crash

Feature request:

It would be nice to have a prompt like "Session is locked by another process. Do you really want to load it?"

The reason for the prompt is because when called with -c, the command isn't stored in the command history, so typing the entire line to add a ! to OpenSession is quite a hassle, specially when you have multiple vim instances per project.

#143 is a related issue that I believe tries to solve this by checking the process id. But as pointed out in the thread, that would require platform specific support.