Issue 22923: No prompt for "display all X possibilities" on completion-enabled input() (original) (raw)

When running input() (or raw_input() for Python 2) while tab-completion has been enabled using readline.parse_and_bind('tab: complete'), pressing the tab key twice display the message Display all X possibilities? (y or n) when there are more than 100 remaining possibilities (default value). However, I am not asked any input to answer the question, and readline then proceeds to display all possibilities.

Steps to reproduce:

• run the following code: __import__('readline').parse_and_bind('tab:complete');input()"
• press tab twice

If your current directory has more than 100 files, the message Display all X possibilities? (y or n) should show, following by a list of the files.

The bug still shows up with:

• rlcompleter or custom completer
• versions 2.7.3, 2.7.8, 3.2.3 and 3.4.2
• bash or zsh
• tty, screen, ssh+screen, xterm, urxvt, gnome-terminal
• command-line flags -S (no site module), -u (unbuffered) or -Su
• being run as script, as -c command-line argument, or in the interactive interpreter
• import readline;readline. or from readline import * in stead of __import__('readline').

On the other hand, the C program "#include <readline/readline.h>", "main(){readline(0);}" behaves as expected: after the message is displayed, user input is waited for and typing "y" lists the possibilities, "n" resumes the line editing, and anything else is ignored.