octave: Commands for Completion

 
 2.4.4 Letting Readline Type for You
 -----------------------------------
 
 The following commands allow Octave to complete command and variable
 names for you.
 
 ‘<TAB>’
      Attempt to do completion on the text before the cursor.  Octave can
      complete the names of commands and variables.
 
 ‘M-?’
      List the possible completions of the text before the cursor.
 
  -- : VAL = completion_append_char ()
  -- : OLD_VAL = completion_append_char (NEW_VAL)
  -- : completion_append_char (NEW_VAL, "local")
      Query or set the internal character variable that is appended to
      successful command-line completion attempts.
 
      The default value is " " (a single space).
 
      When called from inside a function with the "local" option, the
      variable is changed locally for the function and any subroutines it
      calls.  The original variable value is restored when exiting the
      function.
 
  -- : completion_matches (HINT)
      Generate possible completions given HINT.
 
      This function is provided for the benefit of programs like Emacs
      which might be controlling Octave and handling user input.  The
      current command number is not incremented when this function is
      called.  This is a feature, not a bug.