Vim: How to pass arguments to functions from user commands?

Question

I am trying to create a user-defined command in Vim that takes one argument and calls a function with the user-supplied argument. Seems simple but I am unable to get it to work. Here is the code from my foo.vim plugin:

function! s:MyFunc(myParam)
    do something
endfunction

command! -nargs=1 MyCommand call s:MyFunc(myParam)

When I try this out in a Vim buffer like this:

:MyCommand exampleParam

I get the following errors:

E121: Undefined variable: myParam
E116: Invalid arguments for function <SNR>7_MyFunc

What's wrong here? How do I fix this? Any help is greatly appreciated.

Rory O'Kane · Accepted Answer · 2015-01-10 12:32:35Z

78

Use <f-args>:

command! -nargs=1 MyCommand call s:MyFunc(<f-args>)

edited Jan 10, 2015 at 12:32

Rory O'Kane

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answered Jul 9, 2010 at 14:54

JSBձոգչ

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1 Comment

alockwood05 Over a year ago

I wasn't sure what the ! meant... it means overwrite existing command. I found this helpful: adp-gmbh.ch/vim/user_commands.html > :com! Existing-cmd-name cmd-replacement

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