completion-display-width, the value of the environment variable
COLUMNS, or the screen width, in that order.
complete, but replaces the word to be completed with a single match from the list of possible completions. Repeated execution of
menu-completesteps through the list of possible completions, inserting each match in turn. At the end of the list of completions, the bell is rung (subject to the setting of
bell-style) and the original text is restored. An argument of
npositions forward in the list of matches; a negative argument may be used to move backward through the list. This command is intended to be bound to
TAB, but is unbound by default.
menu-complete, but moves backward through the list of possible completions, as if
menu-completehad been given a negative argument.
delete-char). If at the end of the line, behaves identically to
possible-completions. This command is unbound by default.