Official documentation

Vim documentation: usr_41

My Notes

• string comparison
  • "foo" ==? "FOO"
    • “case-insensitive no matter what the user has set”
  • "foo" ==# "FOO"
  • “case-sensitive no matter what the user has set”
  • test if not equal
    • !=?
    • !=#
• echoing variables
  • echom
• abort after function name
  • When the [abort] argument is added, the function will abort as soon as an error is detected.

Functions

• functions with ! after their name override pre-existing functions with the same name
• passing arguments to functions
  • Function Arguments / Learn Vimscript the Hard Way
  • arguments passed must be prefixed with a:

Tutorials and guides

• Vim scripting cheatsheet
• Learn Vimscript the Hard Way

Other notes linking here:

vim