How do I change bash history completion to complete what's already on the line?

Question

I found a command a couple of months ago that made my bash history auto-complete on what\'s already on the line when pressing the up arrow:

$ vim fi
         


        

Answer 1

If set enable-keypad on is in your ~/.inputrc as some st (suckless simple terminal) users might, be aware that the arrows keys are in keypad mode. Ubuntu ships with this useful /usr/share/doc/bash/inputrc.arrows:

# This file controls the behaviour of line input editing for
# programs that use the Gnu Readline library.
#
# Arrow keys in keypad mode
#
"\C-[OD"        backward-char
"\C-[OC"        forward-char
"\C-[OA"        previous-history
"\C-[OB"        next-history
#
# Arrow keys in ANSI mode
#
"\C-[[D"        backward-char
"\C-[[C"        forward-char
"\C-[[A"        previous-history
"\C-[[B"        next-history
#
# Arrow keys in 8 bit keypad mode
#
"\C-M-OD"       backward-char
"\C-M-OC"       forward-char
"\C-M-OA"       previous-history
"\C-M-OB"       next-history
#
# Arrow keys in 8 bit ANSI mode
#
"\C-M-[D"       backward-char
"\C-M-[C"       forward-char
"\C-M-[A"       previous-history
"\C-M-[B"       next-history

So I'm not sure if you'll need all, but it might not hurt to have in your ~/.inputrc:

# Arrow keys in keypad mode
"\C-[OA": history-search-backward
"\C-[OB": history-search-forward
"\C-[OC": forward-char
"\C-[OD": backward-char

# Arrow keys in ANSI mode
"\C-[[A": history-search-backward
"\C-[[B": history-search-forward
"\C-[[C": forward-char
"\C-[[D": backward-char

This is also on the same topic: My cursor keys do not work and also this xterm: special keys