(octave.info)Commands for Completion

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Enter node , (file) or (file)node

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.