How can i get the arglist count?

Question

I am writing a bash script about session management and what I want is if there's something in the arglist not to source the session.

But I couldn't find a way to check the length of :args

First of all how do I even assign the output of it into a variable?

Answer 1

You can use the argv() function:

$ vim a b c
:echo argv()
['a', 'b', 'c']

There is also the argc() function to get the length of the argument list (which is the same as len(argv())).

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Note: I found this by going to :help function-list and searching for arg :-) I find :help function-list to be one of the most useful Vim pages when writing VimScript. Tattoo it on your arm!

It's also documented in some detail at :help argument-list.