Contents
How to set the value of a variable in vimscript?
When you use letand set it as a variable you can use the full power of Vimscript to determine the value. Local Options If you want to set the localvalue of an option as a variable, instead of the globalvalue, you need to prefix the variable name. Open two files in separate splits. Run the following command: :let &l:number = 1
How to set Boolean options in vimscript the Hard Way?
Go through your ~/.vimrcfile and change some of the setand setlocalcommands to their letforms. Remember that boolean options still need to be set to something. Try setting a boolean option like wrapto something other than zero or one. What happens when you set it to a different number?
How to read and set registers in Vim?
You can also read and set registersas variables. Run the following command: :let @a = “hello!” Now put your cursor somewhere in your text and type “ap. This command tells Vim to “paste the contents of register ahere”. We just set the contents of that register, so Vim pastes hello!into your text. Registers can also be read.
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.
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:
Is there a way to run LS Vim?
Try it out by running the following command: :!ls Vim should show you the output of the lscommand, as well as a “Press ENTER or type command to continue” prompt. Vim doesn’t pass any input to the command when run this way. Confirm this by running:
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 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!”
Which is the second way to call function in Vimscript?
Run the following commands: :call Meow() :call GetMeow() The first will display Meow!but the second doesn’t display anything. The return value is thrown away when you use call, so this is only useful when the function has side effects. The second way to call functions is in expressions.
How to set textwidth to 80 in Vim?
Run the following commands: :set textwidth=80 :echo &textwidth Vim will display 80. 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.