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How to define a function in Vim for real?
Okay, let’s define a function for real this time. Run the following commands: :function Meow() : echom “Meow!” :endfunction This time Vim will happily define the function. Let’s try running it: :call Meow() Vim will display Meow!as expected. Let’s try returning a value. Run the following commands: :function GetMeow() : return “Meow String!”
How to call a function directly in vimscript?
Calling Functions We can already see that there are two different ways of calling functions in Vimscript. When you want to call a function directly you use the callcommand. Run the following commands: :call Meow() :call GetMeow() The first will display Meow!but the second doesn’t display anything.
How to run a meow function in Vim?
Run the following commands: :function Meow() : echom “Meow!” :endfunction This time Vim will happily define the function. Let’s try running it: :call Meow() Vim will display Meow!as expected. Let’s try returning a value. Run the following commands: :function GetMeow() : return “Meow String!” :endfunction Now try it out by running this command:
How to set bar as a variable in Vim?
The first thing we need to talk about are variables. Run the following commands: :let foo = “bar” :echo foo Vim will display bar. foois now a variable, and we’ve assigned it a string: “bar”. Now run these commands:
When to use ampersand in front of a variable in Vim?
Using an ampersand in front of a name tells Vim that you’re referring to the option, not a variable that happens to have the same name. Let’s see how Vim works with boolean options.
Why does Vim display the integer 42 as a variable?
Vim will display 42, because we’ve reassigned footo the integer 42. From these short examples it may seem like Vimscript is dynamically typed. That’s not the case, but we’ll talk more about that later. Options as Variables
How to create a function in Vimscript command?
Like most programming languages, Vimscript has functions. Let’s take a look at how to create them, and then talk about some of their quirks. Run the following command: :function meow() You might think this would start defining a function named meow. Unfortunately this is not the case, and we’ve already run into one of Vimscript’s quirks.
How can I exit Vim with a non zero exit code?
This is not possible directly from Vim. This is something that has to be done in the calling shell. If Vim returns a non-zero exit code, the command exit is called to exit the shell and hence close the terminal. To produce a non-zero exit code use :cq instead of :q.