cmdfix.nvim: A Lua repository from gcmt

Cmdfix

Allow user-defined commands to be typed lowercase in command line mode by hijacking the command line and fixing commands case just before execution. Also fixes typing mistakes such as :W and :Set, which are respectively fixed to :w and :set (but only if W and Set are not already user-defined commands)

Installation

Your favorite plugin manager should work just fine.

Configuration

require("cmdfix").setup({
    enabled = true,  -- enable or disable plugin
    threshold = 2, -- minimum characters to consider before fixing the command
    ignore = { "Next" },  -- won't be fixed (default value)
    aliases = { VeryLongCommand = "vlc" },  -- custom aliases
})

Commands shadowing

If you have for example a user-defined command :Marks, the vim-native command :marks will effectively never be executed. If you want to retain the ability to execute both commands independently, just add the Marks command to the ignore list.

This plugin leverages the CmdlineLeave autocommand for its functionality. According to the neovim documentation (:help CmdlineLeave), this autocommand is triggered even in non-interactive uses of :. This means it might potentially break some existing functionality (eg. you have a user-defined command with the same name of a native command). It also might impact performace in some cases. Use <Cmd> in your mappings instead of : to avoid this.

Fixing rules

A command is fixed just before execution or after pressing space after the command (this allows command completion to still work for every command).
A lowercase command is fixed if a matching user-defined command is found and it's not ignored.
An uppercase command (a command containing an uppercase letter) is transformed to lowercase if a matching user-defined command IS NOT found and is not ignored. The threshold option is ignored in this case.

Notes