How to make cmdline's tab case insensitive?

Question

I want to know if it is possible to make cmdline's tab case-insensitive?

For example, let's say I would like to use AvanteChat. To achieve this, I would type Avantec<TAB>, which would auto-complete to AvanteC*****.

FYI, I do use lazyvim, which comes with:

ignorecase = true
smartcase = true

Answer 1

In this case, 'smartcase' does exactly what it should do: your input has at least one uppercase character which makes completion default to case-sensitive matches. This is documented in :help 'smartcase' and :help 'ignorecase'.

There are several ways to work around this:

• Input lowercase characters only:

  :avantec<Tab>
  

• Use the correct case:

  :AvanteC<Tab>
  

• Disable smartcase:

  :set nosmartcase
  :Avantec<Tab>
  

• Create command-line abbreviations for commonly used commands:

  :cabbrev AC AvanteChat
  :AC<Space>
  

Some might find it helpful to have smartcase when searching and nosmartcase when issuing Ex commands. Unfortunately, I don't know how this could be accomplished.