1This is a terse description of the new features added to readline-5.1 since 2the release of readline-5.0. 3 41. New Features in Readline 5 6a. The key sequence sent by the keypad `delete' key is now automatically 7 bound to delete-char. 8 9b. A negative argument to menu-complete now cycles backward through the 10 completion list. 11 12c. A new bindable readline variable: bind-tty-special-chars. If non-zero, 13 readline will bind the terminal special characters to their readline 14 equivalents when it's called (on by default). 15 16d. New bindable command: vi-rubout. Saves deleted text for possible 17 reinsertion, as with any vi-mode `text modification' command; `X' is bound 18 to this in vi command mode. 19 20e. If the rl_completion_query_items is set to a value < 0, readline never 21 asks the user whether or not to view the possible completions. 22 23f. New application-callable auxiliary function, rl_variable_value, returns 24 a string corresponding to a readline variable's value. 25 26g. When parsing inputrc files and variable binding commands, the parser 27 strips trailing whitespace from values assigned to boolean variables 28 before checking them. 29 30h. A new external application-controllable variable that allows the LINES 31 and COLUMNS environment variables to set the window size regardless of 32 what the kernel returns. 33