command_completion
Synopsis:
bind <key>
Description:
This function attempts to complete a command name used on the input line, much
like modern Unix shells do. It can expand both builtin commands and aliases.
It only attempts to expand the first word on the input line, and only if it
is prefixed by the command character, and thus unlike Unix shells, the cursor
does not need to be near the command name to expand it.
See Also:
alias
set cmdchars