Vi - ":call append()"

Question

Where can I learn about more commands like this using the "call" command? I can't seem to be able to type relevant keywords into google.

Answer 1

"call" can call any vim function. You can write your own function or use a built-in function.

To see all of the built-in functions and what they do, use

:help functions

in vim. Ctrl+] while viewing that list will toggle expanded function explanations. Use j/k as usual to scroll the list.

Answer 2

You can write a Vim function to do basically anything, then call it using :call func(). The language is called vim script, it's not too difficult to learn. The vim wiki has an excellent tutorial on the matter. There's a wikibook on vim scripting as well.

So, to answer your question, the "call" command can do anything! It's whatever you program functions for.