of the values from |vim.log.levels|.
      • {opts}   (`table?`) Optional parameters. Unused by default.

vim.notify_once({msg}, {level}, {opts})                    *vim.notify_once()*
    Displays a notification only one time.

    Like |vim.notify()|, but subsequent calls with the same message will not
    display a notification.

    Parameters: ~
      • {msg}    (`string`) Content of the notification to show to the user.
      • {level}  (`integer?`) One of the values from |vim.log.levels|.
      • {opts}   (`table?`) Optional parameters. Unused by default.

    Return: ~
        (`boolean`) true if message was displayed, else false

vim.on_key({fn}, {ns_id}, {opts})                               *vim.on_key()*
    Adds Lua function {fn} with namespace id {ns_id} as a listener to every,
    yes every, input key.

    The Nvim command-line option |-w| is related but does not support
    callbacks and cannot be toggled dynamically.

    Note: ~
      • {fn} will be removed on error.
      • {fn} won't be invoked recursively, i.e. if {fn} itself consumes input,
        it won't be invoked for those keys.
      • {fn} will not be cleared by |nvim_buf_clear_namespace()|

    Parameters: ~
      • {fn}     (`fun(key: string, typed: string): string??`) Function
                 invoked for every input key, after mappings have been applied
                 but before further processing. Arguments {key} and {typed}
                 are raw keycodes, where {key} is the key after mappings are
                 applied, and {typed} is the key(s) before mappings are
                 applied. {typed} may be empty if {key} is produced by
                 non-typed key(s) or by the same typed key(s) that produced a
                 previous {key}. If {fn} returns an empty string, {key} is
                 discarded/ignored. When {fn} is `nil`, the callback
                 associated with namespace {ns_id} is removed.
      • {ns_id}  (`integer?`) Namespace ID. If nil or 0, generates and returns
                 a new |nvim_create_namespace()| id.
      • {opts}   (`table?`) Optional parameters

    Return: ~
        (`integer`) Namespace id associated with {fn}. Or count of all
        callbacks if on_key() is called without arguments.

    See also: ~
      • |keytrans()|

vim.paste({lines}, {phase})                                      *vim.paste()*
    Paste handler, invoked by |nvim_paste()|.

    Note: This is provided only as a "hook", don't call it directly; call
    |nvim_paste()| instead, which arranges redo (dot-repeat) and invokes
    `vim.paste`.

    Example: To remove ANSI color codes when pasting: >lua
        vim.paste = (function(overridden)
          return function(lines, phase)
            for i,line in ipairs(lines) do
              -- Scrub ANSI color codes from paste input.
              lines[i] = line:gsub('\27%[[0-9;mK]+', '')
            end
            return overridden(lines, phase)
          end
        end)(vim.paste)
<

    Parameters: ~
      • {lines}  (`string[]`) |readfile()|-style list of lines to paste.
                 |channel-lines|
      • {phase}  (`-1|1|2|3`) -1: "non-streaming" paste: the call contains all
                 lines. If paste is "streamed", `phase` indicates the stream
                 state:
                 • 1: starts the paste (exactly once)
                 • 2: continues the paste (zero or more times)
                 • 3: ends the paste (exactly once)

    Return: ~
        (`boolean`) result false if client should cancel the paste.

    See also: ~
      • |paste|

vim.print({...})                                                 *vim.print()*
    "Pretty prints" the given arguments and returns them unmodified.

    Example: >lua
        local hl_normal = vim.print(vim.api.nvim_get_hl(0, { name = 'Normal' }))
<

    Parameters: ~
      • {...}  (`any`)

    Return: ~
        (`any`) given arguments.

    See also: ~
      • |vim.inspect()|
      • |:=|

vim.schedule_wrap({fn})