Added in 4.3


Returns the Nth built-in and/or alias command.


N - If N = 0 number of commands, otherwise the Nth command.
command - Returns $true if the command exists, otherwise $false.


.builtin - Only list the built-in commands.
.aliases - Only list the aliases found in scripts/plugins.


; Print number of total commands.
//echo -ag $commands(0)

; Print number of built-in commands.
//echo -ag $commands(0).builtin

; Print number of aliases commands found in scripts/plugins.
//echo -ag $commands(0).aliases

; Print the first commands.
//echo -ag $commands(1)