forked from Imagelibrary/binutils-gdb
1747 lines
71 KiB
Plaintext
1747 lines
71 KiB
Plaintext
This is rluserman.info, produced by makeinfo version 4.7 from
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/Users/chet/src/bash/readline-src/doc/rluserman.texi.
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This manual describes the end user interface of the GNU Readline
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Library (version 5.1-beta1, 11 November 2005), a library which aids in
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the consistency of user interface across discrete programs which provide
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a command line interface.
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Copyright (C) 1988-2005 Free Software Foundation, Inc.
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Permission is granted to make and distribute verbatim copies of this
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manual provided the copyright notice and this permission notice are
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preserved on all copies.
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Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License,
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Version 1.1 or any later version published by the Free Software
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||
Foundation; with no Invariant Sections, with the Front-Cover texts
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||
being "A GNU Manual," and with the Back-Cover Texts as in (a)
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||
below. A copy of the license is included in the section entitled
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||
"GNU Free Documentation License."
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|
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(a) The FSF's Back-Cover Text is: "You have freedom to copy and
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modify this GNU Manual, like GNU software. Copies published by
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the Free Software Foundation raise funds for GNU development."
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INFO-DIR-SECTION Libraries
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START-INFO-DIR-ENTRY
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* RLuserman: (rluserman). The GNU readline library User's Manual.
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END-INFO-DIR-ENTRY
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File: rluserman.info, Node: Top, Next: Command Line Editing, Up: (dir)
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GNU Readline Library
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********************
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This document describes the end user interface of the GNU Readline
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Library, a utility which aids in the consistency of user interface
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across discrete programs which provide a command line interface.
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* Menu:
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* Command Line Editing:: GNU Readline User's Manual.
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* Copying This Manual:: Copying This Manual.
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File: rluserman.info, Node: Command Line Editing, Next: Copying This Manual, Prev: Top, Up: Top
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1 Command Line Editing
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**********************
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This chapter describes the basic features of the GNU command line
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editing interface.
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* Menu:
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* Introduction and Notation:: Notation used in this text.
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* Readline Interaction:: The minimum set of commands for editing a line.
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* Readline Init File:: Customizing Readline from a user's view.
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* Bindable Readline Commands:: A description of most of the Readline commands
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available for binding
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* Readline vi Mode:: A short description of how to make Readline
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behave like the vi editor.
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File: rluserman.info, Node: Introduction and Notation, Next: Readline Interaction, Up: Command Line Editing
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1.1 Introduction to Line Editing
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================================
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The following paragraphs describe the notation used to represent
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keystrokes.
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The text `C-k' is read as `Control-K' and describes the character
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produced when the <k> key is pressed while the Control key is depressed.
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The text `M-k' is read as `Meta-K' and describes the character
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produced when the Meta key (if you have one) is depressed, and the <k>
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key is pressed. The Meta key is labeled <ALT> on many keyboards. On
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keyboards with two keys labeled <ALT> (usually to either side of the
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space bar), the <ALT> on the left side is generally set to work as a
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Meta key. The <ALT> key on the right may also be configured to work as
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a Meta key or may be configured as some other modifier, such as a
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Compose key for typing accented characters.
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If you do not have a Meta or <ALT> key, or another key working as a
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Meta key, the identical keystroke can be generated by typing <ESC>
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_first_, and then typing <k>. Either process is known as "metafying"
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the <k> key.
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The text `M-C-k' is read as `Meta-Control-k' and describes the
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character produced by "metafying" `C-k'.
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In addition, several keys have their own names. Specifically,
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<DEL>, <ESC>, <LFD>, <SPC>, <RET>, and <TAB> all stand for themselves
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when seen in this text, or in an init file (*note Readline Init File::).
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If your keyboard lacks a <LFD> key, typing <C-j> will produce the
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desired character. The <RET> key may be labeled <Return> or <Enter> on
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some keyboards.
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File: rluserman.info, Node: Readline Interaction, Next: Readline Init File, Prev: Introduction and Notation, Up: Command Line Editing
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1.2 Readline Interaction
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========================
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Often during an interactive session you type in a long line of text,
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only to notice that the first word on the line is misspelled. The
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Readline library gives you a set of commands for manipulating the text
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as you type it in, allowing you to just fix your typo, and not forcing
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you to retype the majority of the line. Using these editing commands,
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you move the cursor to the place that needs correction, and delete or
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insert the text of the corrections. Then, when you are satisfied with
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the line, you simply press <RET>. You do not have to be at the end of
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the line to press <RET>; the entire line is accepted regardless of the
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location of the cursor within the line.
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* Menu:
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* Readline Bare Essentials:: The least you need to know about Readline.
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* Readline Movement Commands:: Moving about the input line.
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* Readline Killing Commands:: How to delete text, and how to get it back!
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* Readline Arguments:: Giving numeric arguments to commands.
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* Searching:: Searching through previous lines.
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File: rluserman.info, Node: Readline Bare Essentials, Next: Readline Movement Commands, Up: Readline Interaction
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1.2.1 Readline Bare Essentials
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------------------------------
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In order to enter characters into the line, simply type them. The typed
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character appears where the cursor was, and then the cursor moves one
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space to the right. If you mistype a character, you can use your erase
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character to back up and delete the mistyped character.
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Sometimes you may mistype a character, and not notice the error
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until you have typed several other characters. In that case, you can
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type `C-b' to move the cursor to the left, and then correct your
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mistake. Afterwards, you can move the cursor to the right with `C-f'.
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When you add text in the middle of a line, you will notice that
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characters to the right of the cursor are `pushed over' to make room
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for the text that you have inserted. Likewise, when you delete text
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behind the cursor, characters to the right of the cursor are `pulled
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back' to fill in the blank space created by the removal of the text. A
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list of the bare essentials for editing the text of an input line
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follows.
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`C-b'
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Move back one character.
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`C-f'
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Move forward one character.
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<DEL> or <Backspace>
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Delete the character to the left of the cursor.
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`C-d'
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Delete the character underneath the cursor.
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Printing characters
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Insert the character into the line at the cursor.
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`C-_' or `C-x C-u'
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Undo the last editing command. You can undo all the way back to an
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empty line.
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||
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(Depending on your configuration, the <Backspace> key be set to delete
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the character to the left of the cursor and the <DEL> key set to delete
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||
the character underneath the cursor, like `C-d', rather than the
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||
character to the left of the cursor.)
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||
|
||
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||
File: rluserman.info, Node: Readline Movement Commands, Next: Readline Killing Commands, Prev: Readline Bare Essentials, Up: Readline Interaction
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|
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1.2.2 Readline Movement Commands
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--------------------------------
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The above table describes the most basic keystrokes that you need in
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order to do editing of the input line. For your convenience, many
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other commands have been added in addition to `C-b', `C-f', `C-d', and
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<DEL>. Here are some commands for moving more rapidly about the line.
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`C-a'
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Move to the start of the line.
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`C-e'
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Move to the end of the line.
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||
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`M-f'
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Move forward a word, where a word is composed of letters and
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digits.
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||
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`M-b'
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Move backward a word.
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||
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`C-l'
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Clear the screen, reprinting the current line at the top.
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||
|
||
Notice how `C-f' moves forward a character, while `M-f' moves
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||
forward a word. It is a loose convention that control keystrokes
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operate on characters while meta keystrokes operate on words.
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||
|
||
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||
File: rluserman.info, Node: Readline Killing Commands, Next: Readline Arguments, Prev: Readline Movement Commands, Up: Readline Interaction
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1.2.3 Readline Killing Commands
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-------------------------------
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"Killing" text means to delete the text from the line, but to save it
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away for later use, usually by "yanking" (re-inserting) it back into
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the line. (`Cut' and `paste' are more recent jargon for `kill' and
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`yank'.)
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||
|
||
If the description for a command says that it `kills' text, then you
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can be sure that you can get the text back in a different (or the same)
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place later.
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||
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When you use a kill command, the text is saved in a "kill-ring".
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Any number of consecutive kills save all of the killed text together, so
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that when you yank it back, you get it all. The kill ring is not line
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specific; the text that you killed on a previously typed line is
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available to be yanked back later, when you are typing another line.
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Here is the list of commands for killing text.
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`C-k'
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Kill the text from the current cursor position to the end of the
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line.
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`M-d'
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Kill from the cursor to the end of the current word, or, if between
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words, to the end of the next word. Word boundaries are the same
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as those used by `M-f'.
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||
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`M-<DEL>'
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Kill from the cursor the start of the current word, or, if between
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words, to the start of the previous word. Word boundaries are the
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same as those used by `M-b'.
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||
|
||
`C-w'
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Kill from the cursor to the previous whitespace. This is
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||
different than `M-<DEL>' because the word boundaries differ.
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||
|
||
|
||
Here is how to "yank" the text back into the line. Yanking means to
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copy the most-recently-killed text from the kill buffer.
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||
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`C-y'
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Yank the most recently killed text back into the buffer at the
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cursor.
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||
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`M-y'
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Rotate the kill-ring, and yank the new top. You can only do this
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if the prior command is `C-y' or `M-y'.
|
||
|
||
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||
File: rluserman.info, Node: Readline Arguments, Next: Searching, Prev: Readline Killing Commands, Up: Readline Interaction
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||
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||
1.2.4 Readline Arguments
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------------------------
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||
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||
You can pass numeric arguments to Readline commands. Sometimes the
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argument acts as a repeat count, other times it is the sign of the
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argument that is significant. If you pass a negative argument to a
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||
command which normally acts in a forward direction, that command will
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||
act in a backward direction. For example, to kill text back to the
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start of the line, you might type `M-- C-k'.
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||
|
||
The general way to pass numeric arguments to a command is to type
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meta digits before the command. If the first `digit' typed is a minus
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sign (`-'), then the sign of the argument will be negative. Once you
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||
have typed one meta digit to get the argument started, you can type the
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remainder of the digits, and then the command. For example, to give
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the `C-d' command an argument of 10, you could type `M-1 0 C-d', which
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will delete the next ten characters on the input line.
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||
|
||
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||
File: rluserman.info, Node: Searching, Prev: Readline Arguments, Up: Readline Interaction
|
||
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||
1.2.5 Searching for Commands in the History
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-------------------------------------------
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||
|
||
Readline provides commands for searching through the command history
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for lines containing a specified string. There are two search modes:
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||
"incremental" and "non-incremental".
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||
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||
Incremental searches begin before the user has finished typing the
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search string. As each character of the search string is typed,
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Readline displays the next entry from the history matching the string
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typed so far. An incremental search requires only as many characters
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as needed to find the desired history entry. To search backward in the
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history for a particular string, type `C-r'. Typing `C-s' searches
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forward through the history. The characters present in the value of
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the `isearch-terminators' variable are used to terminate an incremental
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search. If that variable has not been assigned a value, the <ESC> and
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`C-J' characters will terminate an incremental search. `C-g' will
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||
abort an incremental search and restore the original line. When the
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||
search is terminated, the history entry containing the search string
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||
becomes the current line.
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||
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||
To find other matching entries in the history list, type `C-r' or
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`C-s' as appropriate. This will search backward or forward in the
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history for the next entry matching the search string typed so far.
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||
Any other key sequence bound to a Readline command will terminate the
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||
search and execute that command. For instance, a <RET> will terminate
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||
the search and accept the line, thereby executing the command from the
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history list. A movement command will terminate the search, make the
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last line found the current line, and begin editing.
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||
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Readline remembers the last incremental search string. If two
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`C-r's are typed without any intervening characters defining a new
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search string, any remembered search string is used.
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||
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Non-incremental searches read the entire search string before
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starting to search for matching history lines. The search string may be
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typed by the user or be part of the contents of the current line.
|
||
|
||
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||
File: rluserman.info, Node: Readline Init File, Next: Bindable Readline Commands, Prev: Readline Interaction, Up: Command Line Editing
|
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1.3 Readline Init File
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||
======================
|
||
|
||
Although the Readline library comes with a set of Emacs-like
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keybindings installed by default, it is possible to use a different set
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of keybindings. Any user can customize programs that use Readline by
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putting commands in an "inputrc" file, conventionally in his home
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directory. The name of this file is taken from the value of the
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environment variable `INPUTRC'. If that variable is unset, the default
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is `~/.inputrc'.
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||
|
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When a program which uses the Readline library starts up, the init
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||
file is read, and the key bindings are set.
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||
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||
In addition, the `C-x C-r' command re-reads this init file, thus
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||
incorporating any changes that you might have made to it.
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||
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* Menu:
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||
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* Readline Init File Syntax:: Syntax for the commands in the inputrc file.
|
||
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||
* Conditional Init Constructs:: Conditional key bindings in the inputrc file.
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||
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* Sample Init File:: An example inputrc file.
|
||
|
||
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File: rluserman.info, Node: Readline Init File Syntax, Next: Conditional Init Constructs, Up: Readline Init File
|
||
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1.3.1 Readline Init File Syntax
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-------------------------------
|
||
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||
There are only a few basic constructs allowed in the Readline init
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file. Blank lines are ignored. Lines beginning with a `#' are
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comments. Lines beginning with a `$' indicate conditional constructs
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(*note Conditional Init Constructs::). Other lines denote variable
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||
settings and key bindings.
|
||
|
||
Variable Settings
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||
You can modify the run-time behavior of Readline by altering the
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||
values of variables in Readline using the `set' command within the
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init file. The syntax is simple:
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||
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||
set VARIABLE VALUE
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||
|
||
Here, for example, is how to change from the default Emacs-like
|
||
key binding to use `vi' line editing commands:
|
||
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||
set editing-mode vi
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||
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||
Variable names and values, where appropriate, are recognized
|
||
without regard to case. Unrecognized variable names are ignored.
|
||
|
||
Boolean variables (those that can be set to on or off) are set to
|
||
on if the value is null or empty, ON (case-insensitive), or 1.
|
||
Any other value results in the variable being set to off.
|
||
|
||
A great deal of run-time behavior is changeable with the following
|
||
variables.
|
||
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||
`bell-style'
|
||
Controls what happens when Readline wants to ring the
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||
terminal bell. If set to `none', Readline never rings the
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||
bell. If set to `visible', Readline uses a visible bell if
|
||
one is available. If set to `audible' (the default),
|
||
Readline attempts to ring the terminal's bell.
|
||
|
||
`bind-tty-special-chars'
|
||
If set to `on', Readline attempts to bind the control
|
||
characters treated specially by the kernel's terminal driver
|
||
to their Readline equivalents.
|
||
|
||
`comment-begin'
|
||
The string to insert at the beginning of the line when the
|
||
`insert-comment' command is executed. The default value is
|
||
`"#"'.
|
||
|
||
`completion-ignore-case'
|
||
If set to `on', Readline performs filename matching and
|
||
completion in a case-insensitive fashion. The default value
|
||
is `off'.
|
||
|
||
`completion-query-items'
|
||
The number of possible completions that determines when the
|
||
user is asked whether the list of possibilities should be
|
||
displayed. If the number of possible completions is greater
|
||
than this value, Readline will ask the user whether or not he
|
||
wishes to view them; otherwise, they are simply listed. This
|
||
variable must be set to an integer value greater than or
|
||
equal to 0. A negative value means Readline should never ask.
|
||
The default limit is `100'.
|
||
|
||
`convert-meta'
|
||
If set to `on', Readline will convert characters with the
|
||
eighth bit set to an ASCII key sequence by stripping the
|
||
eighth bit and prefixing an <ESC> character, converting them
|
||
to a meta-prefixed key sequence. The default value is `on'.
|
||
|
||
`disable-completion'
|
||
If set to `On', Readline will inhibit word completion.
|
||
Completion characters will be inserted into the line as if
|
||
they had been mapped to `self-insert'. The default is `off'.
|
||
|
||
`editing-mode'
|
||
The `editing-mode' variable controls which default set of key
|
||
bindings is used. By default, Readline starts up in Emacs
|
||
editing mode, where the keystrokes are most similar to Emacs.
|
||
This variable can be set to either `emacs' or `vi'.
|
||
|
||
`enable-keypad'
|
||
When set to `on', Readline will try to enable the application
|
||
keypad when it is called. Some systems need this to enable
|
||
the arrow keys. The default is `off'.
|
||
|
||
`expand-tilde'
|
||
If set to `on', tilde expansion is performed when Readline
|
||
attempts word completion. The default is `off'.
|
||
|
||
`history-preserve-point'
|
||
If set to `on', the history code attempts to place point at
|
||
the same location on each history line retrieved with
|
||
`previous-history' or `next-history'. The default is `off'.
|
||
|
||
`horizontal-scroll-mode'
|
||
This variable can be set to either `on' or `off'. Setting it
|
||
to `on' means that the text of the lines being edited will
|
||
scroll horizontally on a single screen line when they are
|
||
longer than the width of the screen, instead of wrapping onto
|
||
a new screen line. By default, this variable is set to `off'.
|
||
|
||
`input-meta'
|
||
If set to `on', Readline will enable eight-bit input (it will
|
||
not clear the eighth bit in the characters it reads),
|
||
regardless of what the terminal claims it can support. The
|
||
default value is `off'. The name `meta-flag' is a synonym
|
||
for this variable.
|
||
|
||
`isearch-terminators'
|
||
The string of characters that should terminate an incremental
|
||
search without subsequently executing the character as a
|
||
command (*note Searching::). If this variable has not been
|
||
given a value, the characters <ESC> and `C-J' will terminate
|
||
an incremental search.
|
||
|
||
`keymap'
|
||
Sets Readline's idea of the current keymap for key binding
|
||
commands. Acceptable `keymap' names are `emacs',
|
||
`emacs-standard', `emacs-meta', `emacs-ctlx', `vi', `vi-move',
|
||
`vi-command', and `vi-insert'. `vi' is equivalent to
|
||
`vi-command'; `emacs' is equivalent to `emacs-standard'. The
|
||
default value is `emacs'. The value of the `editing-mode'
|
||
variable also affects the default keymap.
|
||
|
||
`mark-directories'
|
||
If set to `on', completed directory names have a slash
|
||
appended. The default is `on'.
|
||
|
||
`mark-modified-lines'
|
||
This variable, when set to `on', causes Readline to display an
|
||
asterisk (`*') at the start of history lines which have been
|
||
modified. This variable is `off' by default.
|
||
|
||
`mark-symlinked-directories'
|
||
If set to `on', completed names which are symbolic links to
|
||
directories have a slash appended (subject to the value of
|
||
`mark-directories'). The default is `off'.
|
||
|
||
`match-hidden-files'
|
||
This variable, when set to `on', causes Readline to match
|
||
files whose names begin with a `.' (hidden files) when
|
||
performing filename completion, unless the leading `.' is
|
||
supplied by the user in the filename to be completed. This
|
||
variable is `on' by default.
|
||
|
||
`output-meta'
|
||
If set to `on', Readline will display characters with the
|
||
eighth bit set directly rather than as a meta-prefixed escape
|
||
sequence. The default is `off'.
|
||
|
||
`page-completions'
|
||
If set to `on', Readline uses an internal `more'-like pager
|
||
to display a screenful of possible completions at a time.
|
||
This variable is `on' by default.
|
||
|
||
`print-completions-horizontally'
|
||
If set to `on', Readline will display completions with matches
|
||
sorted horizontally in alphabetical order, rather than down
|
||
the screen. The default is `off'.
|
||
|
||
`show-all-if-ambiguous'
|
||
This alters the default behavior of the completion functions.
|
||
If set to `on', words which have more than one possible
|
||
completion cause the matches to be listed immediately instead
|
||
of ringing the bell. The default value is `off'.
|
||
|
||
`show-all-if-unmodified'
|
||
This alters the default behavior of the completion functions
|
||
in a fashion similar to SHOW-ALL-IF-AMBIGUOUS. If set to
|
||
`on', words which have more than one possible completion
|
||
without any possible partial completion (the possible
|
||
completions don't share a common prefix) cause the matches to
|
||
be listed immediately instead of ringing the bell. The
|
||
default value is `off'.
|
||
|
||
`visible-stats'
|
||
If set to `on', a character denoting a file's type is
|
||
appended to the filename when listing possible completions.
|
||
The default is `off'.
|
||
|
||
|
||
Key Bindings
|
||
The syntax for controlling key bindings in the init file is
|
||
simple. First you need to find the name of the command that you
|
||
want to change. The following sections contain tables of the
|
||
command name, the default keybinding, if any, and a short
|
||
description of what the command does.
|
||
|
||
Once you know the name of the command, simply place on a line in
|
||
the init file the name of the key you wish to bind the command to,
|
||
a colon, and then the name of the command. The name of the key
|
||
can be expressed in different ways, depending on what you find most
|
||
comfortable.
|
||
|
||
In addition to command names, readline allows keys to be bound to
|
||
a string that is inserted when the key is pressed (a MACRO).
|
||
|
||
KEYNAME: FUNCTION-NAME or MACRO
|
||
KEYNAME is the name of a key spelled out in English. For
|
||
example:
|
||
Control-u: universal-argument
|
||
Meta-Rubout: backward-kill-word
|
||
Control-o: "> output"
|
||
|
||
In the above example, `C-u' is bound to the function
|
||
`universal-argument', `M-DEL' is bound to the function
|
||
`backward-kill-word', and `C-o' is bound to run the macro
|
||
expressed on the right hand side (that is, to insert the text
|
||
`> output' into the line).
|
||
|
||
A number of symbolic character names are recognized while
|
||
processing this key binding syntax: DEL, ESC, ESCAPE, LFD,
|
||
NEWLINE, RET, RETURN, RUBOUT, SPACE, SPC, and TAB.
|
||
|
||
"KEYSEQ": FUNCTION-NAME or MACRO
|
||
KEYSEQ differs from KEYNAME above in that strings denoting an
|
||
entire key sequence can be specified, by placing the key
|
||
sequence in double quotes. Some GNU Emacs style key escapes
|
||
can be used, as in the following example, but the special
|
||
character names are not recognized.
|
||
|
||
"\C-u": universal-argument
|
||
"\C-x\C-r": re-read-init-file
|
||
"\e[11~": "Function Key 1"
|
||
|
||
In the above example, `C-u' is again bound to the function
|
||
`universal-argument' (just as it was in the first example),
|
||
`C-x C-r' is bound to the function `re-read-init-file', and
|
||
`<ESC> <[> <1> <1> <~>' is bound to insert the text `Function
|
||
Key 1'.
|
||
|
||
|
||
The following GNU Emacs style escape sequences are available when
|
||
specifying key sequences:
|
||
|
||
`\C-'
|
||
control prefix
|
||
|
||
`\M-'
|
||
meta prefix
|
||
|
||
`\e'
|
||
an escape character
|
||
|
||
`\\'
|
||
backslash
|
||
|
||
`\"'
|
||
<">, a double quotation mark
|
||
|
||
`\''
|
||
<'>, a single quote or apostrophe
|
||
|
||
In addition to the GNU Emacs style escape sequences, a second set
|
||
of backslash escapes is available:
|
||
|
||
`\a'
|
||
alert (bell)
|
||
|
||
`\b'
|
||
backspace
|
||
|
||
`\d'
|
||
delete
|
||
|
||
`\f'
|
||
form feed
|
||
|
||
`\n'
|
||
newline
|
||
|
||
`\r'
|
||
carriage return
|
||
|
||
`\t'
|
||
horizontal tab
|
||
|
||
`\v'
|
||
vertical tab
|
||
|
||
`\NNN'
|
||
the eight-bit character whose value is the octal value NNN
|
||
(one to three digits)
|
||
|
||
`\xHH'
|
||
the eight-bit character whose value is the hexadecimal value
|
||
HH (one or two hex digits)
|
||
|
||
When entering the text of a macro, single or double quotes must be
|
||
used to indicate a macro definition. Unquoted text is assumed to
|
||
be a function name. In the macro body, the backslash escapes
|
||
described above are expanded. Backslash will quote any other
|
||
character in the macro text, including `"' and `''. For example,
|
||
the following binding will make `C-x \' insert a single `\' into
|
||
the line:
|
||
"\C-x\\": "\\"
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Conditional Init Constructs, Next: Sample Init File, Prev: Readline Init File Syntax, Up: Readline Init File
|
||
|
||
1.3.2 Conditional Init Constructs
|
||
---------------------------------
|
||
|
||
Readline implements a facility similar in spirit to the conditional
|
||
compilation features of the C preprocessor which allows key bindings
|
||
and variable settings to be performed as the result of tests. There
|
||
are four parser directives used.
|
||
|
||
`$if'
|
||
The `$if' construct allows bindings to be made based on the
|
||
editing mode, the terminal being used, or the application using
|
||
Readline. The text of the test extends to the end of the line; no
|
||
characters are required to isolate it.
|
||
|
||
`mode'
|
||
The `mode=' form of the `$if' directive is used to test
|
||
whether Readline is in `emacs' or `vi' mode. This may be
|
||
used in conjunction with the `set keymap' command, for
|
||
instance, to set bindings in the `emacs-standard' and
|
||
`emacs-ctlx' keymaps only if Readline is starting out in
|
||
`emacs' mode.
|
||
|
||
`term'
|
||
The `term=' form may be used to include terminal-specific key
|
||
bindings, perhaps to bind the key sequences output by the
|
||
terminal's function keys. The word on the right side of the
|
||
`=' is tested against both the full name of the terminal and
|
||
the portion of the terminal name before the first `-'. This
|
||
allows `sun' to match both `sun' and `sun-cmd', for instance.
|
||
|
||
`application'
|
||
The APPLICATION construct is used to include
|
||
application-specific settings. Each program using the
|
||
Readline library sets the APPLICATION NAME, and you can test
|
||
for a particular value. This could be used to bind key
|
||
sequences to functions useful for a specific program. For
|
||
instance, the following command adds a key sequence that
|
||
quotes the current or previous word in Bash:
|
||
$if Bash
|
||
# Quote the current or previous word
|
||
"\C-xq": "\eb\"\ef\""
|
||
$endif
|
||
|
||
`$endif'
|
||
This command, as seen in the previous example, terminates an `$if'
|
||
command.
|
||
|
||
`$else'
|
||
Commands in this branch of the `$if' directive are executed if the
|
||
test fails.
|
||
|
||
`$include'
|
||
This directive takes a single filename as an argument and reads
|
||
commands and bindings from that file. For example, the following
|
||
directive reads from `/etc/inputrc':
|
||
$include /etc/inputrc
|
||
|
||
|
||
File: rluserman.info, Node: Sample Init File, Prev: Conditional Init Constructs, Up: Readline Init File
|
||
|
||
1.3.3 Sample Init File
|
||
----------------------
|
||
|
||
Here is an example of an INPUTRC file. This illustrates key binding,
|
||
variable assignment, and conditional syntax.
|
||
|
||
|
||
# This file controls the behaviour of line input editing for
|
||
# programs that use the GNU Readline library. Existing
|
||
# programs include FTP, Bash, and GDB.
|
||
#
|
||
# You can re-read the inputrc file with C-x C-r.
|
||
# Lines beginning with '#' are comments.
|
||
#
|
||
# First, include any systemwide bindings and variable
|
||
# assignments from /etc/Inputrc
|
||
$include /etc/Inputrc
|
||
|
||
#
|
||
# Set various bindings for emacs mode.
|
||
|
||
set editing-mode emacs
|
||
|
||
$if mode=emacs
|
||
|
||
Meta-Control-h: backward-kill-word Text after the function name is ignored
|
||
|
||
#
|
||
# Arrow keys in keypad mode
|
||
#
|
||
#"\M-OD": backward-char
|
||
#"\M-OC": forward-char
|
||
#"\M-OA": previous-history
|
||
#"\M-OB": next-history
|
||
#
|
||
# Arrow keys in ANSI mode
|
||
#
|
||
"\M-[D": backward-char
|
||
"\M-[C": forward-char
|
||
"\M-[A": previous-history
|
||
"\M-[B": next-history
|
||
#
|
||
# Arrow keys in 8 bit keypad mode
|
||
#
|
||
#"\M-\C-OD": backward-char
|
||
#"\M-\C-OC": forward-char
|
||
#"\M-\C-OA": previous-history
|
||
#"\M-\C-OB": next-history
|
||
#
|
||
# Arrow keys in 8 bit ANSI mode
|
||
#
|
||
#"\M-\C-[D": backward-char
|
||
#"\M-\C-[C": forward-char
|
||
#"\M-\C-[A": previous-history
|
||
#"\M-\C-[B": next-history
|
||
|
||
C-q: quoted-insert
|
||
|
||
$endif
|
||
|
||
# An old-style binding. This happens to be the default.
|
||
TAB: complete
|
||
|
||
# Macros that are convenient for shell interaction
|
||
$if Bash
|
||
# edit the path
|
||
"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
|
||
# prepare to type a quoted word --
|
||
# insert open and close double quotes
|
||
# and move to just after the open quote
|
||
"\C-x\"": "\"\"\C-b"
|
||
# insert a backslash (testing backslash escapes
|
||
# in sequences and macros)
|
||
"\C-x\\": "\\"
|
||
# Quote the current or previous word
|
||
"\C-xq": "\eb\"\ef\""
|
||
# Add a binding to refresh the line, which is unbound
|
||
"\C-xr": redraw-current-line
|
||
# Edit variable on current line.
|
||
"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
|
||
$endif
|
||
|
||
# use a visible bell if one is available
|
||
set bell-style visible
|
||
|
||
# don't strip characters to 7 bits when reading
|
||
set input-meta on
|
||
|
||
# allow iso-latin1 characters to be inserted rather
|
||
# than converted to prefix-meta sequences
|
||
set convert-meta off
|
||
|
||
# display characters with the eighth bit set directly
|
||
# rather than as meta-prefixed characters
|
||
set output-meta on
|
||
|
||
# if there are more than 150 possible completions for
|
||
# a word, ask the user if he wants to see all of them
|
||
set completion-query-items 150
|
||
|
||
# For FTP
|
||
$if Ftp
|
||
"\C-xg": "get \M-?"
|
||
"\C-xt": "put \M-?"
|
||
"\M-.": yank-last-arg
|
||
$endif
|
||
|
||
|
||
File: rluserman.info, Node: Bindable Readline Commands, Next: Readline vi Mode, Prev: Readline Init File, Up: Command Line Editing
|
||
|
||
1.4 Bindable Readline Commands
|
||
==============================
|
||
|
||
* Menu:
|
||
|
||
* Commands For Moving:: Moving about the line.
|
||
* Commands For History:: Getting at previous lines.
|
||
* Commands For Text:: Commands for changing text.
|
||
* Commands For Killing:: Commands for killing and yanking.
|
||
* Numeric Arguments:: Specifying numeric arguments, repeat counts.
|
||
* Commands For Completion:: Getting Readline to do the typing for you.
|
||
* Keyboard Macros:: Saving and re-executing typed characters
|
||
* Miscellaneous Commands:: Other miscellaneous commands.
|
||
|
||
This section describes Readline commands that may be bound to key
|
||
sequences. Command names without an accompanying key sequence are
|
||
unbound by default.
|
||
|
||
In the following descriptions, "point" refers to the current cursor
|
||
position, and "mark" refers to a cursor position saved by the
|
||
`set-mark' command. The text between the point and mark is referred to
|
||
as the "region".
|
||
|
||
|
||
File: rluserman.info, Node: Commands For Moving, Next: Commands For History, Up: Bindable Readline Commands
|
||
|
||
1.4.1 Commands For Moving
|
||
-------------------------
|
||
|
||
`beginning-of-line (C-a)'
|
||
Move to the start of the current line.
|
||
|
||
`end-of-line (C-e)'
|
||
Move to the end of the line.
|
||
|
||
`forward-char (C-f)'
|
||
Move forward a character.
|
||
|
||
`backward-char (C-b)'
|
||
Move back a character.
|
||
|
||
`forward-word (M-f)'
|
||
Move forward to the end of the next word. Words are composed of
|
||
letters and digits.
|
||
|
||
`backward-word (M-b)'
|
||
Move back to the start of the current or previous word. Words are
|
||
composed of letters and digits.
|
||
|
||
`clear-screen (C-l)'
|
||
Clear the screen and redraw the current line, leaving the current
|
||
line at the top of the screen.
|
||
|
||
`redraw-current-line ()'
|
||
Refresh the current line. By default, this is unbound.
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Commands For History, Next: Commands For Text, Prev: Commands For Moving, Up: Bindable Readline Commands
|
||
|
||
1.4.2 Commands For Manipulating The History
|
||
-------------------------------------------
|
||
|
||
`accept-line (Newline or Return)'
|
||
Accept the line regardless of where the cursor is. If this line is
|
||
non-empty, it may be added to the history list for future recall
|
||
with `add_history()'. If this line is a modified history line,
|
||
the history line is restored to its original state.
|
||
|
||
`previous-history (C-p)'
|
||
Move `back' through the history list, fetching the previous
|
||
command.
|
||
|
||
`next-history (C-n)'
|
||
Move `forward' through the history list, fetching the next command.
|
||
|
||
`beginning-of-history (M-<)'
|
||
Move to the first line in the history.
|
||
|
||
`end-of-history (M->)'
|
||
Move to the end of the input history, i.e., the line currently
|
||
being entered.
|
||
|
||
`reverse-search-history (C-r)'
|
||
Search backward starting at the current line and moving `up'
|
||
through the history as necessary. This is an incremental search.
|
||
|
||
`forward-search-history (C-s)'
|
||
Search forward starting at the current line and moving `down'
|
||
through the the history as necessary. This is an incremental
|
||
search.
|
||
|
||
`non-incremental-reverse-search-history (M-p)'
|
||
Search backward starting at the current line and moving `up'
|
||
through the history as necessary using a non-incremental search
|
||
for a string supplied by the user.
|
||
|
||
`non-incremental-forward-search-history (M-n)'
|
||
Search forward starting at the current line and moving `down'
|
||
through the the history as necessary using a non-incremental search
|
||
for a string supplied by the user.
|
||
|
||
`history-search-forward ()'
|
||
Search forward through the history for the string of characters
|
||
between the start of the current line and the point. This is a
|
||
non-incremental search. By default, this command is unbound.
|
||
|
||
`history-search-backward ()'
|
||
Search backward through the history for the string of characters
|
||
between the start of the current line and the point. This is a
|
||
non-incremental search. By default, this command is unbound.
|
||
|
||
`yank-nth-arg (M-C-y)'
|
||
Insert the first argument to the previous command (usually the
|
||
second word on the previous line) at point. With an argument N,
|
||
insert the Nth word from the previous command (the words in the
|
||
previous command begin with word 0). A negative argument inserts
|
||
the Nth word from the end of the previous command. Once the
|
||
argument N is computed, the argument is extracted as if the `!N'
|
||
history expansion had been specified.
|
||
|
||
`yank-last-arg (M-. or M-_)'
|
||
Insert last argument to the previous command (the last word of the
|
||
previous history entry). With an argument, behave exactly like
|
||
`yank-nth-arg'. Successive calls to `yank-last-arg' move back
|
||
through the history list, inserting the last argument of each line
|
||
in turn. The history expansion facilities are used to extract the
|
||
last argument, as if the `!$' history expansion had been specified.
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Commands For Text, Next: Commands For Killing, Prev: Commands For History, Up: Bindable Readline Commands
|
||
|
||
1.4.3 Commands For Changing Text
|
||
--------------------------------
|
||
|
||
`delete-char (C-d)'
|
||
Delete the character at point. If point is at the beginning of
|
||
the line, there are no characters in the line, and the last
|
||
character typed was not bound to `delete-char', then return EOF.
|
||
|
||
`backward-delete-char (Rubout)'
|
||
Delete the character behind the cursor. A numeric argument means
|
||
to kill the characters instead of deleting them.
|
||
|
||
`forward-backward-delete-char ()'
|
||
Delete the character under the cursor, unless the cursor is at the
|
||
end of the line, in which case the character behind the cursor is
|
||
deleted. By default, this is not bound to a key.
|
||
|
||
`quoted-insert (C-q or C-v)'
|
||
Add the next character typed to the line verbatim. This is how to
|
||
insert key sequences like `C-q', for example.
|
||
|
||
`tab-insert (M-<TAB>)'
|
||
Insert a tab character.
|
||
|
||
`self-insert (a, b, A, 1, !, ...)'
|
||
Insert yourself.
|
||
|
||
`transpose-chars (C-t)'
|
||
Drag the character before the cursor forward over the character at
|
||
the cursor, moving the cursor forward as well. If the insertion
|
||
point is at the end of the line, then this transposes the last two
|
||
characters of the line. Negative arguments have no effect.
|
||
|
||
`transpose-words (M-t)'
|
||
Drag the word before point past the word after point, moving point
|
||
past that word as well. If the insertion point is at the end of
|
||
the line, this transposes the last two words on the line.
|
||
|
||
`upcase-word (M-u)'
|
||
Uppercase the current (or following) word. With a negative
|
||
argument, uppercase the previous word, but do not move the cursor.
|
||
|
||
`downcase-word (M-l)'
|
||
Lowercase the current (or following) word. With a negative
|
||
argument, lowercase the previous word, but do not move the cursor.
|
||
|
||
`capitalize-word (M-c)'
|
||
Capitalize the current (or following) word. With a negative
|
||
argument, capitalize the previous word, but do not move the cursor.
|
||
|
||
`overwrite-mode ()'
|
||
Toggle overwrite mode. With an explicit positive numeric argument,
|
||
switches to overwrite mode. With an explicit non-positive numeric
|
||
argument, switches to insert mode. This command affects only
|
||
`emacs' mode; `vi' mode does overwrite differently. Each call to
|
||
`readline()' starts in insert mode.
|
||
|
||
In overwrite mode, characters bound to `self-insert' replace the
|
||
text at point rather than pushing the text to the right.
|
||
Characters bound to `backward-delete-char' replace the character
|
||
before point with a space.
|
||
|
||
By default, this command is unbound.
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Commands For Killing, Next: Numeric Arguments, Prev: Commands For Text, Up: Bindable Readline Commands
|
||
|
||
1.4.4 Killing And Yanking
|
||
-------------------------
|
||
|
||
`kill-line (C-k)'
|
||
Kill the text from point to the end of the line.
|
||
|
||
`backward-kill-line (C-x Rubout)'
|
||
Kill backward to the beginning of the line.
|
||
|
||
`unix-line-discard (C-u)'
|
||
Kill backward from the cursor to the beginning of the current line.
|
||
|
||
`kill-whole-line ()'
|
||
Kill all characters on the current line, no matter where point is.
|
||
By default, this is unbound.
|
||
|
||
`kill-word (M-d)'
|
||
Kill from point to the end of the current word, or if between
|
||
words, to the end of the next word. Word boundaries are the same
|
||
as `forward-word'.
|
||
|
||
`backward-kill-word (M-<DEL>)'
|
||
Kill the word behind point. Word boundaries are the same as
|
||
`backward-word'.
|
||
|
||
`unix-word-rubout (C-w)'
|
||
Kill the word behind point, using white space as a word boundary.
|
||
The killed text is saved on the kill-ring.
|
||
|
||
`unix-filename-rubout ()'
|
||
Kill the word behind point, using white space and the slash
|
||
character as the word boundaries. The killed text is saved on the
|
||
kill-ring.
|
||
|
||
`delete-horizontal-space ()'
|
||
Delete all spaces and tabs around point. By default, this is
|
||
unbound.
|
||
|
||
`kill-region ()'
|
||
Kill the text in the current region. By default, this command is
|
||
unbound.
|
||
|
||
`copy-region-as-kill ()'
|
||
Copy the text in the region to the kill buffer, so it can be yanked
|
||
right away. By default, this command is unbound.
|
||
|
||
`copy-backward-word ()'
|
||
Copy the word before point to the kill buffer. The word
|
||
boundaries are the same as `backward-word'. By default, this
|
||
command is unbound.
|
||
|
||
`copy-forward-word ()'
|
||
Copy the word following point to the kill buffer. The word
|
||
boundaries are the same as `forward-word'. By default, this
|
||
command is unbound.
|
||
|
||
`yank (C-y)'
|
||
Yank the top of the kill ring into the buffer at point.
|
||
|
||
`yank-pop (M-y)'
|
||
Rotate the kill-ring, and yank the new top. You can only do this
|
||
if the prior command is `yank' or `yank-pop'.
|
||
|
||
|
||
File: rluserman.info, Node: Numeric Arguments, Next: Commands For Completion, Prev: Commands For Killing, Up: Bindable Readline Commands
|
||
|
||
1.4.5 Specifying Numeric Arguments
|
||
----------------------------------
|
||
|
||
`digit-argument (M-0, M-1, ... M--)'
|
||
Add this digit to the argument already accumulating, or start a new
|
||
argument. `M--' starts a negative argument.
|
||
|
||
`universal-argument ()'
|
||
This is another way to specify an argument. If this command is
|
||
followed by one or more digits, optionally with a leading minus
|
||
sign, those digits define the argument. If the command is
|
||
followed by digits, executing `universal-argument' again ends the
|
||
numeric argument, but is otherwise ignored. As a special case, if
|
||
this command is immediately followed by a character that is
|
||
neither a digit or minus sign, the argument count for the next
|
||
command is multiplied by four. The argument count is initially
|
||
one, so executing this function the first time makes the argument
|
||
count four, a second time makes the argument count sixteen, and so
|
||
on. By default, this is not bound to a key.
|
||
|
||
|
||
File: rluserman.info, Node: Commands For Completion, Next: Keyboard Macros, Prev: Numeric Arguments, Up: Bindable Readline Commands
|
||
|
||
1.4.6 Letting Readline Type For You
|
||
-----------------------------------
|
||
|
||
`complete (<TAB>)'
|
||
Attempt to perform completion on the text before point. The
|
||
actual completion performed is application-specific. The default
|
||
is filename completion.
|
||
|
||
`possible-completions (M-?)'
|
||
List the possible completions of the text before point.
|
||
|
||
`insert-completions (M-*)'
|
||
Insert all completions of the text before point that would have
|
||
been generated by `possible-completions'.
|
||
|
||
`menu-complete ()'
|
||
Similar to `complete', but replaces the word to be completed with
|
||
a single match from the list of possible completions. Repeated
|
||
execution of `menu-complete' steps through the list of possible
|
||
completions, inserting each match in turn. At the end of the list
|
||
of completions, the bell is rung (subject to the setting of
|
||
`bell-style') and the original text is restored. An argument of N
|
||
moves N positions forward in the list of matches; a negative
|
||
argument may be used to move backward through the list. This
|
||
command is intended to be bound to <TAB>, but is unbound by
|
||
default.
|
||
|
||
`delete-char-or-list ()'
|
||
Deletes the character under the cursor if not at the beginning or
|
||
end of the line (like `delete-char'). If at the end of the line,
|
||
behaves identically to `possible-completions'. This command is
|
||
unbound by default.
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Keyboard Macros, Next: Miscellaneous Commands, Prev: Commands For Completion, Up: Bindable Readline Commands
|
||
|
||
1.4.7 Keyboard Macros
|
||
---------------------
|
||
|
||
`start-kbd-macro (C-x ()'
|
||
Begin saving the characters typed into the current keyboard macro.
|
||
|
||
`end-kbd-macro (C-x ))'
|
||
Stop saving the characters typed into the current keyboard macro
|
||
and save the definition.
|
||
|
||
`call-last-kbd-macro (C-x e)'
|
||
Re-execute the last keyboard macro defined, by making the
|
||
characters in the macro appear as if typed at the keyboard.
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Miscellaneous Commands, Prev: Keyboard Macros, Up: Bindable Readline Commands
|
||
|
||
1.4.8 Some Miscellaneous Commands
|
||
---------------------------------
|
||
|
||
`re-read-init-file (C-x C-r)'
|
||
Read in the contents of the INPUTRC file, and incorporate any
|
||
bindings or variable assignments found there.
|
||
|
||
`abort (C-g)'
|
||
Abort the current editing command and ring the terminal's bell
|
||
(subject to the setting of `bell-style').
|
||
|
||
`do-uppercase-version (M-a, M-b, M-X, ...)'
|
||
If the metafied character X is lowercase, run the command that is
|
||
bound to the corresponding uppercase character.
|
||
|
||
`prefix-meta (<ESC>)'
|
||
Metafy the next character typed. This is for keyboards without a
|
||
meta key. Typing `<ESC> f' is equivalent to typing `M-f'.
|
||
|
||
`undo (C-_ or C-x C-u)'
|
||
Incremental undo, separately remembered for each line.
|
||
|
||
`revert-line (M-r)'
|
||
Undo all changes made to this line. This is like executing the
|
||
`undo' command enough times to get back to the beginning.
|
||
|
||
`tilde-expand (M-~)'
|
||
Perform tilde expansion on the current word.
|
||
|
||
`set-mark (C-@)'
|
||
Set the mark to the point. If a numeric argument is supplied, the
|
||
mark is set to that position.
|
||
|
||
`exchange-point-and-mark (C-x C-x)'
|
||
Swap the point with the mark. The current cursor position is set
|
||
to the saved position, and the old cursor position is saved as the
|
||
mark.
|
||
|
||
`character-search (C-])'
|
||
A character is read and point is moved to the next occurrence of
|
||
that character. A negative count searches for previous
|
||
occurrences.
|
||
|
||
`character-search-backward (M-C-])'
|
||
A character is read and point is moved to the previous occurrence
|
||
of that character. A negative count searches for subsequent
|
||
occurrences.
|
||
|
||
`insert-comment (M-#)'
|
||
Without a numeric argument, the value of the `comment-begin'
|
||
variable is inserted at the beginning of the current line. If a
|
||
numeric argument is supplied, this command acts as a toggle: if
|
||
the characters at the beginning of the line do not match the value
|
||
of `comment-begin', the value is inserted, otherwise the
|
||
characters in `comment-begin' are deleted from the beginning of
|
||
the line. In either case, the line is accepted as if a newline
|
||
had been typed.
|
||
|
||
`dump-functions ()'
|
||
Print all of the functions and their key bindings to the Readline
|
||
output stream. If a numeric argument is supplied, the output is
|
||
formatted in such a way that it can be made part of an INPUTRC
|
||
file. This command is unbound by default.
|
||
|
||
`dump-variables ()'
|
||
Print all of the settable variables and their values to the
|
||
Readline output stream. If a numeric argument is supplied, the
|
||
output is formatted in such a way that it can be made part of an
|
||
INPUTRC file. This command is unbound by default.
|
||
|
||
`dump-macros ()'
|
||
Print all of the Readline key sequences bound to macros and the
|
||
strings they output. If a numeric argument is supplied, the
|
||
output is formatted in such a way that it can be made part of an
|
||
INPUTRC file. This command is unbound by default.
|
||
|
||
`emacs-editing-mode (C-e)'
|
||
When in `vi' command mode, this causes a switch to `emacs' editing
|
||
mode.
|
||
|
||
`vi-editing-mode (M-C-j)'
|
||
When in `emacs' editing mode, this causes a switch to `vi' editing
|
||
mode.
|
||
|
||
|
||
|
||
File: rluserman.info, Node: Readline vi Mode, Prev: Bindable Readline Commands, Up: Command Line Editing
|
||
|
||
1.5 Readline vi Mode
|
||
====================
|
||
|
||
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.
|
||
|
||
|
||
File: rluserman.info, Node: Copying This Manual, Prev: Command Line Editing, Up: Top
|
||
|
||
Appendix A Copying This Manual
|
||
******************************
|
||
|
||
* Menu:
|
||
|
||
* GNU Free Documentation License:: License for copying this manual.
|
||
|
||
|
||
File: rluserman.info, Node: GNU Free Documentation License, Up: Copying This Manual
|
||
|
||
A.1 GNU Free Documentation License
|
||
==================================
|
||
|
||
Version 1.2, November 2002
|
||
|
||
Copyright (C) 2000,2001,2002 Free Software Foundation, Inc.
|
||
59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
|
||
|
||
Everyone is permitted to copy and distribute verbatim copies
|
||
of this license document, but changing it is not allowed.
|
||
|
||
0. PREAMBLE
|
||
|
||
The purpose of this License is to make a manual, textbook, or other
|
||
functional and useful document "free" in the sense of freedom: to
|
||
assure everyone the effective freedom to copy and redistribute it,
|
||
with or without modifying it, either commercially or
|
||
noncommercially. Secondarily, this License preserves for the
|
||
author and publisher a way to get credit for their work, while not
|
||
being considered responsible for modifications made by others.
|
||
|
||
This License is a kind of "copyleft", which means that derivative
|
||
works of the document must themselves be free in the same sense.
|
||
It complements the GNU General Public License, which is a copyleft
|
||
license designed for free software.
|
||
|
||
We have designed this License in order to use it for manuals for
|
||
free software, because free software needs free documentation: a
|
||
free program should come with manuals providing the same freedoms
|
||
that the software does. But this License is not limited to
|
||
software manuals; it can be used for any textual work, regardless
|
||
of subject matter or whether it is published as a printed book.
|
||
We recommend this License principally for works whose purpose is
|
||
instruction or reference.
|
||
|
||
1. APPLICABILITY AND DEFINITIONS
|
||
|
||
This License applies to any manual or other work, in any medium,
|
||
that contains a notice placed by the copyright holder saying it
|
||
can be distributed under the terms of this License. Such a notice
|
||
grants a world-wide, royalty-free license, unlimited in duration,
|
||
to use that work under the conditions stated herein. The
|
||
"Document", below, refers to any such manual or work. Any member
|
||
of the public is a licensee, and is addressed as "you". You
|
||
accept the license if you copy, modify or distribute the work in a
|
||
way requiring permission under copyright law.
|
||
|
||
A "Modified Version" of the Document means any work containing the
|
||
Document or a portion of it, either copied verbatim, or with
|
||
modifications and/or translated into another language.
|
||
|
||
A "Secondary Section" is a named appendix or a front-matter section
|
||
of the Document that deals exclusively with the relationship of the
|
||
publishers or authors of the Document to the Document's overall
|
||
subject (or to related matters) and contains nothing that could
|
||
fall directly within that overall subject. (Thus, if the Document
|
||
is in part a textbook of mathematics, a Secondary Section may not
|
||
explain any mathematics.) The relationship could be a matter of
|
||
historical connection with the subject or with related matters, or
|
||
of legal, commercial, philosophical, ethical or political position
|
||
regarding them.
|
||
|
||
The "Invariant Sections" are certain Secondary Sections whose
|
||
titles are designated, as being those of Invariant Sections, in
|
||
the notice that says that the Document is released under this
|
||
License. If a section does not fit the above definition of
|
||
Secondary then it is not allowed to be designated as Invariant.
|
||
The Document may contain zero Invariant Sections. If the Document
|
||
does not identify any Invariant Sections then there are none.
|
||
|
||
The "Cover Texts" are certain short passages of text that are
|
||
listed, as Front-Cover Texts or Back-Cover Texts, in the notice
|
||
that says that the Document is released under this License. A
|
||
Front-Cover Text may be at most 5 words, and a Back-Cover Text may
|
||
be at most 25 words.
|
||
|
||
A "Transparent" copy of the Document means a machine-readable copy,
|
||
represented in a format whose specification is available to the
|
||
general public, that is suitable for revising the document
|
||
straightforwardly with generic text editors or (for images
|
||
composed of pixels) generic paint programs or (for drawings) some
|
||
widely available drawing editor, and that is suitable for input to
|
||
text formatters or for automatic translation to a variety of
|
||
formats suitable for input to text formatters. A copy made in an
|
||
otherwise Transparent file format whose markup, or absence of
|
||
markup, has been arranged to thwart or discourage subsequent
|
||
modification by readers is not Transparent. An image format is
|
||
not Transparent if used for any substantial amount of text. A
|
||
copy that is not "Transparent" is called "Opaque".
|
||
|
||
Examples of suitable formats for Transparent copies include plain
|
||
ASCII without markup, Texinfo input format, LaTeX input format,
|
||
SGML or XML using a publicly available DTD, and
|
||
standard-conforming simple HTML, PostScript or PDF designed for
|
||
human modification. Examples of transparent image formats include
|
||
PNG, XCF and JPG. Opaque formats include proprietary formats that
|
||
can be read and edited only by proprietary word processors, SGML or
|
||
XML for which the DTD and/or processing tools are not generally
|
||
available, and the machine-generated HTML, PostScript or PDF
|
||
produced by some word processors for output purposes only.
|
||
|
||
The "Title Page" means, for a printed book, the title page itself,
|
||
plus such following pages as are needed to hold, legibly, the
|
||
material this License requires to appear in the title page. For
|
||
works in formats which do not have any title page as such, "Title
|
||
Page" means the text near the most prominent appearance of the
|
||
work's title, preceding the beginning of the body of the text.
|
||
|
||
A section "Entitled XYZ" means a named subunit of the Document
|
||
whose title either is precisely XYZ or contains XYZ in parentheses
|
||
following text that translates XYZ in another language. (Here XYZ
|
||
stands for a specific section name mentioned below, such as
|
||
"Acknowledgements", "Dedications", "Endorsements", or "History".)
|
||
To "Preserve the Title" of such a section when you modify the
|
||
Document means that it remains a section "Entitled XYZ" according
|
||
to this definition.
|
||
|
||
The Document may include Warranty Disclaimers next to the notice
|
||
which states that this License applies to the Document. These
|
||
Warranty Disclaimers are considered to be included by reference in
|
||
this License, but only as regards disclaiming warranties: any other
|
||
implication that these Warranty Disclaimers may have is void and
|
||
has no effect on the meaning of this License.
|
||
|
||
2. VERBATIM COPYING
|
||
|
||
You may copy and distribute the Document in any medium, either
|
||
commercially or noncommercially, provided that this License, the
|
||
copyright notices, and the license notice saying this License
|
||
applies to the Document are reproduced in all copies, and that you
|
||
add no other conditions whatsoever to those of this License. You
|
||
may not use technical measures to obstruct or control the reading
|
||
or further copying of the copies you make or distribute. However,
|
||
you may accept compensation in exchange for copies. If you
|
||
distribute a large enough number of copies you must also follow
|
||
the conditions in section 3.
|
||
|
||
You may also lend copies, under the same conditions stated above,
|
||
and you may publicly display copies.
|
||
|
||
3. COPYING IN QUANTITY
|
||
|
||
If you publish printed copies (or copies in media that commonly
|
||
have printed covers) of the Document, numbering more than 100, and
|
||
the Document's license notice requires Cover Texts, you must
|
||
enclose the copies in covers that carry, clearly and legibly, all
|
||
these Cover Texts: Front-Cover Texts on the front cover, and
|
||
Back-Cover Texts on the back cover. Both covers must also clearly
|
||
and legibly identify you as the publisher of these copies. The
|
||
front cover must present the full title with all words of the
|
||
title equally prominent and visible. You may add other material
|
||
on the covers in addition. Copying with changes limited to the
|
||
covers, as long as they preserve the title of the Document and
|
||
satisfy these conditions, can be treated as verbatim copying in
|
||
other respects.
|
||
|
||
If the required texts for either cover are too voluminous to fit
|
||
legibly, you should put the first ones listed (as many as fit
|
||
reasonably) on the actual cover, and continue the rest onto
|
||
adjacent pages.
|
||
|
||
If you publish or distribute Opaque copies of the Document
|
||
numbering more than 100, you must either include a
|
||
machine-readable Transparent copy along with each Opaque copy, or
|
||
state in or with each Opaque copy a computer-network location from
|
||
which the general network-using public has access to download
|
||
using public-standard network protocols a complete Transparent
|
||
copy of the Document, free of added material. If you use the
|
||
latter option, you must take reasonably prudent steps, when you
|
||
begin distribution of Opaque copies in quantity, to ensure that
|
||
this Transparent copy will remain thus accessible at the stated
|
||
location until at least one year after the last time you
|
||
distribute an Opaque copy (directly or through your agents or
|
||
retailers) of that edition to the public.
|
||
|
||
It is requested, but not required, that you contact the authors of
|
||
the Document well before redistributing any large number of
|
||
copies, to give them a chance to provide you with an updated
|
||
version of the Document.
|
||
|
||
4. MODIFICATIONS
|
||
|
||
You may copy and distribute a Modified Version of the Document
|
||
under the conditions of sections 2 and 3 above, provided that you
|
||
release the Modified Version under precisely this License, with
|
||
the Modified Version filling the role of the Document, thus
|
||
licensing distribution and modification of the Modified Version to
|
||
whoever possesses a copy of it. In addition, you must do these
|
||
things in the Modified Version:
|
||
|
||
A. Use in the Title Page (and on the covers, if any) a title
|
||
distinct from that of the Document, and from those of
|
||
previous versions (which should, if there were any, be listed
|
||
in the History section of the Document). You may use the
|
||
same title as a previous version if the original publisher of
|
||
that version gives permission.
|
||
|
||
B. List on the Title Page, as authors, one or more persons or
|
||
entities responsible for authorship of the modifications in
|
||
the Modified Version, together with at least five of the
|
||
principal authors of the Document (all of its principal
|
||
authors, if it has fewer than five), unless they release you
|
||
from this requirement.
|
||
|
||
C. State on the Title page the name of the publisher of the
|
||
Modified Version, as the publisher.
|
||
|
||
D. Preserve all the copyright notices of the Document.
|
||
|
||
E. Add an appropriate copyright notice for your modifications
|
||
adjacent to the other copyright notices.
|
||
|
||
F. Include, immediately after the copyright notices, a license
|
||
notice giving the public permission to use the Modified
|
||
Version under the terms of this License, in the form shown in
|
||
the Addendum below.
|
||
|
||
G. Preserve in that license notice the full lists of Invariant
|
||
Sections and required Cover Texts given in the Document's
|
||
license notice.
|
||
|
||
H. Include an unaltered copy of this License.
|
||
|
||
I. Preserve the section Entitled "History", Preserve its Title,
|
||
and add to it an item stating at least the title, year, new
|
||
authors, and publisher of the Modified Version as given on
|
||
the Title Page. If there is no section Entitled "History" in
|
||
the Document, create one stating the title, year, authors,
|
||
and publisher of the Document as given on its Title Page,
|
||
then add an item describing the Modified Version as stated in
|
||
the previous sentence.
|
||
|
||
J. Preserve the network location, if any, given in the Document
|
||
for public access to a Transparent copy of the Document, and
|
||
likewise the network locations given in the Document for
|
||
previous versions it was based on. These may be placed in
|
||
the "History" section. You may omit a network location for a
|
||
work that was published at least four years before the
|
||
Document itself, or if the original publisher of the version
|
||
it refers to gives permission.
|
||
|
||
K. For any section Entitled "Acknowledgements" or "Dedications",
|
||
Preserve the Title of the section, and preserve in the
|
||
section all the substance and tone of each of the contributor
|
||
acknowledgements and/or dedications given therein.
|
||
|
||
L. Preserve all the Invariant Sections of the Document,
|
||
unaltered in their text and in their titles. Section numbers
|
||
or the equivalent are not considered part of the section
|
||
titles.
|
||
|
||
M. Delete any section Entitled "Endorsements". Such a section
|
||
may not be included in the Modified Version.
|
||
|
||
N. Do not retitle any existing section to be Entitled
|
||
"Endorsements" or to conflict in title with any Invariant
|
||
Section.
|
||
|
||
O. Preserve any Warranty Disclaimers.
|
||
|
||
If the Modified Version includes new front-matter sections or
|
||
appendices that qualify as Secondary Sections and contain no
|
||
material copied from the Document, you may at your option
|
||
designate some or all of these sections as invariant. To do this,
|
||
add their titles to the list of Invariant Sections in the Modified
|
||
Version's license notice. These titles must be distinct from any
|
||
other section titles.
|
||
|
||
You may add a section Entitled "Endorsements", provided it contains
|
||
nothing but endorsements of your Modified Version by various
|
||
parties--for example, statements of peer review or that the text
|
||
has been approved by an organization as the authoritative
|
||
definition of a standard.
|
||
|
||
You may add a passage of up to five words as a Front-Cover Text,
|
||
and a passage of up to 25 words as a Back-Cover Text, to the end
|
||
of the list of Cover Texts in the Modified Version. Only one
|
||
passage of Front-Cover Text and one of Back-Cover Text may be
|
||
added by (or through arrangements made by) any one entity. If the
|
||
Document already includes a cover text for the same cover,
|
||
previously added by you or by arrangement made by the same entity
|
||
you are acting on behalf of, you may not add another; but you may
|
||
replace the old one, on explicit permission from the previous
|
||
publisher that added the old one.
|
||
|
||
The author(s) and publisher(s) of the Document do not by this
|
||
License give permission to use their names for publicity for or to
|
||
assert or imply endorsement of any Modified Version.
|
||
|
||
5. COMBINING DOCUMENTS
|
||
|
||
You may combine the Document with other documents released under
|
||
this License, under the terms defined in section 4 above for
|
||
modified versions, provided that you include in the combination
|
||
all of the Invariant Sections of all of the original documents,
|
||
unmodified, and list them all as Invariant Sections of your
|
||
combined work in its license notice, and that you preserve all
|
||
their Warranty Disclaimers.
|
||
|
||
The combined work need only contain one copy of this License, and
|
||
multiple identical Invariant Sections may be replaced with a single
|
||
copy. If there are multiple Invariant Sections with the same name
|
||
but different contents, make the title of each such section unique
|
||
by adding at the end of it, in parentheses, the name of the
|
||
original author or publisher of that section if known, or else a
|
||
unique number. Make the same adjustment to the section titles in
|
||
the list of Invariant Sections in the license notice of the
|
||
combined work.
|
||
|
||
In the combination, you must combine any sections Entitled
|
||
"History" in the various original documents, forming one section
|
||
Entitled "History"; likewise combine any sections Entitled
|
||
"Acknowledgements", and any sections Entitled "Dedications". You
|
||
must delete all sections Entitled "Endorsements."
|
||
|
||
6. COLLECTIONS OF DOCUMENTS
|
||
|
||
You may make a collection consisting of the Document and other
|
||
documents released under this License, and replace the individual
|
||
copies of this License in the various documents with a single copy
|
||
that is included in the collection, provided that you follow the
|
||
rules of this License for verbatim copying of each of the
|
||
documents in all other respects.
|
||
|
||
You may extract a single document from such a collection, and
|
||
distribute it individually under this License, provided you insert
|
||
a copy of this License into the extracted document, and follow
|
||
this License in all other respects regarding verbatim copying of
|
||
that document.
|
||
|
||
7. AGGREGATION WITH INDEPENDENT WORKS
|
||
|
||
A compilation of the Document or its derivatives with other
|
||
separate and independent documents or works, in or on a volume of
|
||
a storage or distribution medium, is called an "aggregate" if the
|
||
copyright resulting from the compilation is not used to limit the
|
||
legal rights of the compilation's users beyond what the individual
|
||
works permit. When the Document is included an aggregate, this
|
||
License does not apply to the other works in the aggregate which
|
||
are not themselves derivative works of the Document.
|
||
|
||
If the Cover Text requirement of section 3 is applicable to these
|
||
copies of the Document, then if the Document is less than one half
|
||
of the entire aggregate, the Document's Cover Texts may be placed
|
||
on covers that bracket the Document within the aggregate, or the
|
||
electronic equivalent of covers if the Document is in electronic
|
||
form. Otherwise they must appear on printed covers that bracket
|
||
the whole aggregate.
|
||
|
||
8. TRANSLATION
|
||
|
||
Translation is considered a kind of modification, so you may
|
||
distribute translations of the Document under the terms of section
|
||
4. Replacing Invariant Sections with translations requires special
|
||
permission from their copyright holders, but you may include
|
||
translations of some or all Invariant Sections in addition to the
|
||
original versions of these Invariant Sections. You may include a
|
||
translation of this License, and all the license notices in the
|
||
Document, and any Warranty Disclaimers, provided that you also
|
||
include the original English version of this License and the
|
||
original versions of those notices and disclaimers. In case of a
|
||
disagreement between the translation and the original version of
|
||
this License or a notice or disclaimer, the original version will
|
||
prevail.
|
||
|
||
If a section in the Document is Entitled "Acknowledgements",
|
||
"Dedications", or "History", the requirement (section 4) to
|
||
Preserve its Title (section 1) will typically require changing the
|
||
actual title.
|
||
|
||
9. TERMINATION
|
||
|
||
You may not copy, modify, sublicense, or distribute the Document
|
||
except as expressly provided for under this License. Any other
|
||
attempt to copy, modify, sublicense or distribute the Document is
|
||
void, and will automatically terminate your rights under this
|
||
License. However, parties who have received copies, or rights,
|
||
from you under this License will not have their licenses
|
||
terminated so long as such parties remain in full compliance.
|
||
|
||
10. FUTURE REVISIONS OF THIS LICENSE
|
||
|
||
The Free Software Foundation may publish new, revised versions of
|
||
the GNU Free Documentation License from time to time. Such new
|
||
versions will be similar in spirit to the present version, but may
|
||
differ in detail to address new problems or concerns. See
|
||
`http://www.gnu.org/copyleft/'.
|
||
|
||
Each version of the License is given a distinguishing version
|
||
number. If the Document specifies that a particular numbered
|
||
version of this License "or any later version" applies to it, you
|
||
have the option of following the terms and conditions either of
|
||
that specified version or of any later version that has been
|
||
published (not as a draft) by the Free Software Foundation. If
|
||
the Document does not specify a version number of this License,
|
||
you may choose any version ever published (not as a draft) by the
|
||
Free Software Foundation.
|
||
|
||
A.1.1 ADDENDUM: How to use this License for your documents
|
||
----------------------------------------------------------
|
||
|
||
To use this License in a document you have written, include a copy of
|
||
the License in the document and put the following copyright and license
|
||
notices just after the title page:
|
||
|
||
Copyright (C) YEAR YOUR NAME.
|
||
Permission is granted to copy, distribute and/or modify this document
|
||
under the terms of the GNU Free Documentation License, Version 1.2
|
||
or any later version published by the Free Software Foundation;
|
||
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
|
||
A copy of the license is included in the section entitled ``GNU
|
||
Free Documentation License''.
|
||
|
||
If you have Invariant Sections, Front-Cover Texts and Back-Cover
|
||
Texts, replace the "with...Texts." line with this:
|
||
|
||
with the Invariant Sections being LIST THEIR TITLES, with
|
||
the Front-Cover Texts being LIST, and with the Back-Cover Texts
|
||
being LIST.
|
||
|
||
If you have Invariant Sections without Cover Texts, or some other
|
||
combination of the three, merge those two alternatives to suit the
|
||
situation.
|
||
|
||
If your document contains nontrivial examples of program code, we
|
||
recommend releasing these examples in parallel under your choice of
|
||
free software license, such as the GNU General Public License, to
|
||
permit their use in free software.
|
||
|
||
|
||
|
||
Tag Table:
|
||
Node: Top1382
|
||
Node: Command Line Editing1814
|
||
Node: Introduction and Notation2457
|
||
Node: Readline Interaction4081
|
||
Node: Readline Bare Essentials5274
|
||
Node: Readline Movement Commands7065
|
||
Node: Readline Killing Commands8032
|
||
Node: Readline Arguments9954
|
||
Node: Searching11000
|
||
Node: Readline Init File13153
|
||
Node: Readline Init File Syntax14220
|
||
Node: Conditional Init Constructs26156
|
||
Node: Sample Init File28691
|
||
Node: Bindable Readline Commands31810
|
||
Node: Commands For Moving32869
|
||
Node: Commands For History33732
|
||
Node: Commands For Text36858
|
||
Node: Commands For Killing39586
|
||
Node: Numeric Arguments41730
|
||
Node: Commands For Completion42871
|
||
Node: Keyboard Macros44417
|
||
Node: Miscellaneous Commands44990
|
||
Node: Readline vi Mode48353
|
||
Node: Copying This Manual49274
|
||
Node: GNU Free Documentation License49506
|
||
|
||
End Tag Table
|