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(readline.info)Readline vi Mode

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Readline vi Mode
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   While the Readline library does not have a full set of `vi' editing
functions, it does contain enough to allow simple editing of the line.
The Readline `vi' mode behaves as specified in the POSIX 1003.2
standard.

   In order to switch interactively between `emacs' and `vi' editing
modes, use the command `M-C-j' (bound to emacs-editing-mode when in
`vi' mode and to vi-editing-mode in `emacs' mode).  The Readline
default is `emacs' mode.

   When you enter a line in `vi' mode, you are already placed in
`insertion' mode, as if you had typed an `i'.  Pressing <ESC> switches
you into `command' mode, where you can edit the text of the line with
the standard `vi' movement keys, move to previous history lines with
`k' and subsequent lines with `j', and so forth.

   This document describes the GNU Readline Library, a utility for
aiding in the consitency of user interface across discrete programs
that need to provide a command line interface.

   Copyright (C) 1988-2001 Free Software Foundation, Inc.

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manual provided the copyright notice and this permission notice pare
preserved on all copies.

   Permission is granted to copy and distribute modified versions of
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permission notice identical to this one.

   Permission is granted to copy and distribute translations of this
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versions, except that this permission notice may be stated in a
translation approved by the Foundation.