Using script-local function as operator?

[ddickstein]

I'm having trouble using call operator#user#define('my-op', '<SID>Foo') with a function s:Foo. If I remove the <SID> and s, things work as expected.

[kana]

<SID> is available only for :map commands. <SID> is just a synonym for <SNR>123_, where 123 is an arbitrary number for each script file. So that it's possible to use a script-local function if you know the script number. See :help <SNR> and search s:SID() for how to get the script number.

But it's tedious to refer script-local functions from other scripts. I recommend to use autoload functions.