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diff --git a/doc/rluserman.html b/doc/rluserman.html new file mode 100644 index 0000000..b594615 --- /dev/null +++ b/doc/rluserman.html @@ -0,0 +1,2529 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ --> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<!-- This manual describes the end user interface of the GNU Readline Library +(version 8.2, 19 September 2022), a library which aids in the +consistency of user interface across discrete programs which provide +a command line interface. + +Copyright (C) 1988-2022 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 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". + --> +<title>GNU Readline Library</title> + +<meta name="description" content="GNU Readline Library"> +<meta name="keywords" content="GNU Readline Library"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta name="viewport" content="width=device-width,initial-scale=1"> + +<link href="#Top" rel="start" title="Top"> +<link href="#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="#Command-Line-Editing" rel="next" title="Command Line Editing"> +<style type="text/css"> +<!-- +a.copiable-anchor {visibility: hidden; text-decoration: none; line-height: 0em} +a.summary-letter {text-decoration: none} +blockquote.indentedblock {margin-right: 0em} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +kbd {font-style: oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +span.nolinebreak {white-space: nowrap} +span.roman {font-family: initial; font-weight: normal} +span.sansserif {font-family: sans-serif; font-weight: normal} +span:hover a.copiable-anchor {visibility: visible} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en"> +<h1 class="settitle" align="center">GNU Readline Library</h1> + + + + + + + + + +<div class="top" id="Top"> +<div class="header"> +<p> +Next: <a href="#Command-Line-Editing" accesskey="n" rel="next">Command Line Editing</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="GNU-Readline-Library"></span><h1 class="top">GNU Readline Library</h1> + +<p>This document describes the end user interface of the GNU Readline Library, +a utility which aids in the consistency of user interface across discrete +programs which provide a command line interface. +The Readline home page is <a href="http://www.gnu.org/software/readline/">http://www.gnu.org/software/readline/</a>. +</p> + + + + + +<div class="Contents_element" id="SEC_Contents"> +<h2 class="contents-heading">Table of Contents</h2> + +<div class="contents"> + +<ul class="no-bullet"> + <li><a id="toc-Command-Line-Editing-1" href="#Command-Line-Editing">1 Command Line Editing</a> + <ul class="no-bullet"> + <li><a id="toc-Introduction-to-Line-Editing" href="#Introduction-and-Notation">1.1 Introduction to Line Editing</a></li> + <li><a id="toc-Readline-Interaction-1" href="#Readline-Interaction">1.2 Readline Interaction</a> + <ul class="no-bullet"> + <li><a id="toc-Readline-Bare-Essentials-1" href="#Readline-Bare-Essentials">1.2.1 Readline Bare Essentials</a></li> + <li><a id="toc-Readline-Movement-Commands-1" href="#Readline-Movement-Commands">1.2.2 Readline Movement Commands</a></li> + <li><a id="toc-Readline-Killing-Commands-1" href="#Readline-Killing-Commands">1.2.3 Readline Killing Commands</a></li> + <li><a id="toc-Readline-Arguments-1" href="#Readline-Arguments">1.2.4 Readline Arguments</a></li> + <li><a id="toc-Searching-for-Commands-in-the-History" href="#Searching">1.2.5 Searching for Commands in the History</a></li> + </ul></li> + <li><a id="toc-Readline-Init-File-1" href="#Readline-Init-File">1.3 Readline Init File</a> + <ul class="no-bullet"> + <li><a id="toc-Readline-Init-File-Syntax-1" href="#Readline-Init-File-Syntax">1.3.1 Readline Init File Syntax</a></li> + <li><a id="toc-Conditional-Init-Constructs-1" href="#Conditional-Init-Constructs">1.3.2 Conditional Init Constructs</a></li> + <li><a id="toc-Sample-Init-File-1" href="#Sample-Init-File">1.3.3 Sample Init File</a></li> + </ul></li> + <li><a id="toc-Bindable-Readline-Commands-1" href="#Bindable-Readline-Commands">1.4 Bindable Readline Commands</a> + <ul class="no-bullet"> + <li><a id="toc-Commands-For-Moving-1" href="#Commands-For-Moving">1.4.1 Commands For Moving</a></li> + <li><a id="toc-Commands-For-Manipulating-The-History" href="#Commands-For-History">1.4.2 Commands For Manipulating The History</a></li> + <li><a id="toc-Commands-For-Changing-Text" href="#Commands-For-Text">1.4.3 Commands For Changing Text</a></li> + <li><a id="toc-Killing-And-Yanking" href="#Commands-For-Killing">1.4.4 Killing And Yanking</a></li> + <li><a id="toc-Specifying-Numeric-Arguments" href="#Numeric-Arguments">1.4.5 Specifying Numeric Arguments</a></li> + <li><a id="toc-Letting-Readline-Type-For-You" href="#Commands-For-Completion">1.4.6 Letting Readline Type For You</a></li> + <li><a id="toc-Keyboard-Macros-1" href="#Keyboard-Macros">1.4.7 Keyboard Macros</a></li> + <li><a id="toc-Some-Miscellaneous-Commands" href="#Miscellaneous-Commands">1.4.8 Some Miscellaneous Commands</a></li> + </ul></li> + <li><a id="toc-Readline-vi-Mode-1" href="#Readline-vi-Mode">1.5 Readline vi Mode</a></li> + </ul></li> + <li><a id="toc-GNU-Free-Documentation-License-1" href="#GNU-Free-Documentation-License">Appendix A GNU Free Documentation License</a></li> +</ul> +</div> +</div> +<hr> +<div class="chapter" id="Command-Line-Editing"> +<div class="header"> +<p> +Next: <a href="#GNU-Free-Documentation-License" accesskey="n" rel="next">GNU Free Documentation License</a>, Previous: <a href="#Top" accesskey="p" rel="prev">GNU Readline Library</a>, Up: <a href="#Top" accesskey="u" rel="up">GNU Readline Library</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Command-Line-Editing-1"></span><h2 class="chapter">1 Command Line Editing</h2> + +<p>This chapter describes the basic features of the <small>GNU</small> +command line editing interface. +</p> + +<ul class="section-toc"> +<li><a href="#Introduction-and-Notation" accesskey="1">Introduction to Line Editing</a></li> +<li><a href="#Readline-Interaction" accesskey="2">Readline Interaction</a></li> +<li><a href="#Readline-Init-File" accesskey="3">Readline Init File</a></li> +<li><a href="#Bindable-Readline-Commands" accesskey="4">Bindable Readline Commands</a></li> +<li><a href="#Readline-vi-Mode" accesskey="5">Readline vi Mode</a></li> +</ul> +<hr> +<div class="section" id="Introduction-and-Notation"> +<div class="header"> +<p> +Next: <a href="#Readline-Interaction" accesskey="n" rel="next">Readline Interaction</a>, Up: <a href="#Command-Line-Editing" accesskey="u" rel="up">Command Line Editing</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Introduction-to-Line-Editing"></span><h3 class="section">1.1 Introduction to Line Editing</h3> + +<p>The following paragraphs describe the notation used to represent +keystrokes. +</p> +<p>The text <kbd>C-k</kbd> is read as ‘Control-K’ and describes the character +produced when the <tt class="key">k</tt> key is pressed while the Control key +is depressed. +</p> +<p>The text <kbd>M-k</kbd> is read as ‘Meta-K’ and describes the character +produced when the Meta key (if you have one) is depressed, and the <tt class="key">k</tt> +key is pressed. +The Meta key is labeled <tt class="key">ALT</tt> on many keyboards. +On keyboards with two keys labeled <tt class="key">ALT</tt> (usually to either side of +the space bar), the <tt class="key">ALT</tt> on the left side is generally set to +work as a Meta key. +The <tt class="key">ALT</tt> key on the right may also be configured to work as a +Meta key or may be configured as some other modifier, such as a +Compose key for typing accented characters. +</p> +<p>If you do not have a Meta or <tt class="key">ALT</tt> key, or another key working as +a Meta key, the identical keystroke can be generated by typing <tt class="key">ESC</tt> +<em>first</em>, and then typing <tt class="key">k</tt>. +Either process is known as <em>metafying</em> the <tt class="key">k</tt> key. +</p> +<p>The text <kbd>M-C-k</kbd> is read as ‘Meta-Control-k’ and describes the +character produced by <em>metafying</em> <kbd>C-k</kbd>. +</p> +<p>In addition, several keys have their own names. Specifically, +<tt class="key">DEL</tt>, <tt class="key">ESC</tt>, <tt class="key">LFD</tt>, <tt class="key">SPC</tt>, <tt class="key">RET</tt>, and <tt class="key">TAB</tt> all +stand for themselves when seen in this text, or in an init file +(see <a href="#Readline-Init-File">Readline Init File</a>). +If your keyboard lacks a <tt class="key">LFD</tt> key, typing <tt class="key">C-j</tt> will +produce the desired character. +The <tt class="key">RET</tt> key may be labeled <tt class="key">Return</tt> or <tt class="key">Enter</tt> on +some keyboards. +</p> +<hr> +</div> +<div class="section" id="Readline-Interaction"> +<div class="header"> +<p> +Next: <a href="#Readline-Init-File" accesskey="n" rel="next">Readline Init File</a>, Previous: <a href="#Introduction-and-Notation" accesskey="p" rel="prev">Introduction to Line Editing</a>, Up: <a href="#Command-Line-Editing" accesskey="u" rel="up">Command Line Editing</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Interaction-1"></span><h3 class="section">1.2 Readline Interaction</h3> +<span id="index-interaction_002c-readline"></span> + +<p>Often during an interactive session you type in a long line of text, +only to notice that the first word on the line is misspelled. The +Readline library gives you a set of commands for manipulating the text +as you type it in, allowing you to just fix your typo, and not forcing +you to retype the majority of the line. Using these editing commands, +you move the cursor to the place that needs correction, and delete or +insert the text of the corrections. Then, when you are satisfied with +the line, you simply press <tt class="key">RET</tt>. You do not have to be at the +end of the line to press <tt class="key">RET</tt>; the entire line is accepted +regardless of the location of the cursor within the line. +</p> + +<ul class="section-toc"> +<li><a href="#Readline-Bare-Essentials" accesskey="1">Readline Bare Essentials</a></li> +<li><a href="#Readline-Movement-Commands" accesskey="2">Readline Movement Commands</a></li> +<li><a href="#Readline-Killing-Commands" accesskey="3">Readline Killing Commands</a></li> +<li><a href="#Readline-Arguments" accesskey="4">Readline Arguments</a></li> +<li><a href="#Searching" accesskey="5">Searching for Commands in the History</a></li> +</ul> +<hr> +<div class="subsection" id="Readline-Bare-Essentials"> +<div class="header"> +<p> +Next: <a href="#Readline-Movement-Commands" accesskey="n" rel="next">Readline Movement Commands</a>, Up: <a href="#Readline-Interaction" accesskey="u" rel="up">Readline Interaction</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Bare-Essentials-1"></span><h4 class="subsection">1.2.1 Readline Bare Essentials</h4> +<span id="index-notation_002c-readline"></span> +<span id="index-command-editing"></span> +<span id="index-editing-command-lines"></span> + +<p>In order to enter characters into the line, simply type them. The typed +character appears where the cursor was, and then the cursor moves one +space to the right. If you mistype a character, you can use your +erase character to back up and delete the mistyped character. +</p> +<p>Sometimes you may mistype a character, and +not notice the error until you have typed several other characters. In +that case, you can type <kbd>C-b</kbd> to move the cursor to the left, and then +correct your mistake. Afterwards, you can move the cursor to the right +with <kbd>C-f</kbd>. +</p> +<p>When you add text in the middle of a line, you will notice that characters +to the right of the cursor are ‘pushed over’ to make room for the text +that you have inserted. Likewise, when you delete text behind the cursor, +characters to the right of the cursor are ‘pulled back’ to fill in the +blank space created by the removal of the text. A list of the bare +essentials for editing the text of an input line follows. +</p> +<dl compact="compact"> +<dt><span><kbd>C-b</kbd></span></dt> +<dd><p>Move back one character. +</p></dd> +<dt><span><kbd>C-f</kbd></span></dt> +<dd><p>Move forward one character. +</p></dd> +<dt><span><tt class="key">DEL</tt> or <tt class="key">Backspace</tt></span></dt> +<dd><p>Delete the character to the left of the cursor. +</p></dd> +<dt><span><kbd>C-d</kbd></span></dt> +<dd><p>Delete the character underneath the cursor. +</p></dd> +<dt><span>Printing characters<!-- /@w --></span></dt> +<dd><p>Insert the character into the line at the cursor. +</p></dd> +<dt><span><kbd>C-_</kbd> or <kbd>C-x C-u</kbd></span></dt> +<dd><p>Undo the last editing command. You can undo all the way back to an +empty line. +</p></dd> +</dl> + +<p>(Depending on your configuration, the <tt class="key">Backspace</tt> key might be set to +delete the character to the left of the cursor and the <tt class="key">DEL</tt> key set +to delete the character underneath the cursor, like <kbd>C-d</kbd>, rather +than the character to the left of the cursor.) +</p> +<hr> +</div> +<div class="subsection" id="Readline-Movement-Commands"> +<div class="header"> +<p> +Next: <a href="#Readline-Killing-Commands" accesskey="n" rel="next">Readline Killing Commands</a>, Previous: <a href="#Readline-Bare-Essentials" accesskey="p" rel="prev">Readline Bare Essentials</a>, Up: <a href="#Readline-Interaction" accesskey="u" rel="up">Readline Interaction</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Movement-Commands-1"></span><h4 class="subsection">1.2.2 Readline Movement Commands</h4> + + +<p>The above table describes the most basic keystrokes that you need +in order to do editing of the input line. For your convenience, many +other commands have been added in addition to <kbd>C-b</kbd>, <kbd>C-f</kbd>, +<kbd>C-d</kbd>, and <tt class="key">DEL</tt>. Here are some commands for moving more rapidly +about the line. +</p> +<dl compact="compact"> +<dt><span><kbd>C-a</kbd></span></dt> +<dd><p>Move to the start of the line. +</p></dd> +<dt><span><kbd>C-e</kbd></span></dt> +<dd><p>Move to the end of the line. +</p></dd> +<dt><span><kbd>M-f</kbd></span></dt> +<dd><p>Move forward a word, where a word is composed of letters and digits. +</p></dd> +<dt><span><kbd>M-b</kbd></span></dt> +<dd><p>Move backward a word. +</p></dd> +<dt><span><kbd>C-l</kbd></span></dt> +<dd><p>Clear the screen, reprinting the current line at the top. +</p></dd> +</dl> + +<p>Notice how <kbd>C-f</kbd> moves forward a character, while <kbd>M-f</kbd> moves +forward a word. It is a loose convention that control keystrokes +operate on characters while meta keystrokes operate on words. +</p> +<hr> +</div> +<div class="subsection" id="Readline-Killing-Commands"> +<div class="header"> +<p> +Next: <a href="#Readline-Arguments" accesskey="n" rel="next">Readline Arguments</a>, Previous: <a href="#Readline-Movement-Commands" accesskey="p" rel="prev">Readline Movement Commands</a>, Up: <a href="#Readline-Interaction" accesskey="u" rel="up">Readline Interaction</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Killing-Commands-1"></span><h4 class="subsection">1.2.3 Readline Killing Commands</h4> + +<span id="index-killing-text"></span> +<span id="index-yanking-text"></span> + +<p><em>Killing</em> text means to delete the text from the line, but to save +it away for later use, usually by <em>yanking</em> (re-inserting) +it back into the line. +(‘Cut’ and ‘paste’ are more recent jargon for ‘kill’ and ‘yank’.) +</p> +<p>If the description for a command says that it ‘kills’ text, then you can +be sure that you can get the text back in a different (or the same) +place later. +</p> +<p>When you use a kill command, the text is saved in a <em>kill-ring</em>. +Any number of consecutive kills save all of the killed text together, so +that when you yank it back, you get it all. The kill +ring is not line specific; the text that you killed on a previously +typed line is available to be yanked back later, when you are typing +another line. +<span id="index-kill-ring"></span> +</p> +<p>Here is the list of commands for killing text. +</p> +<dl compact="compact"> +<dt><span><kbd>C-k</kbd></span></dt> +<dd><p>Kill the text from the current cursor position to the end of the line. +</p> +</dd> +<dt><span><kbd>M-d</kbd></span></dt> +<dd><p>Kill from the cursor to the end of the current word, or, if between +words, to the end of the next word. +Word boundaries are the same as those used by <kbd>M-f</kbd>. +</p> +</dd> +<dt><span><kbd>M-<span class="key">DEL</span></kbd></span></dt> +<dd><p>Kill from the cursor to the start of the current word, or, if between +words, to the start of the previous word. +Word boundaries are the same as those used by <kbd>M-b</kbd>. +</p> +</dd> +<dt><span><kbd>C-w</kbd></span></dt> +<dd><p>Kill from the cursor to the previous whitespace. This is different than +<kbd>M-<span class="key">DEL</span></kbd> because the word boundaries differ. +</p> +</dd> +</dl> + +<p>Here is how to <em>yank</em> the text back into the line. Yanking +means to copy the most-recently-killed text from the kill buffer. +</p> +<dl compact="compact"> +<dt><span><kbd>C-y</kbd></span></dt> +<dd><p>Yank the most recently killed text back into the buffer at the cursor. +</p> +</dd> +<dt><span><kbd>M-y</kbd></span></dt> +<dd><p>Rotate the kill-ring, and yank the new top. You can only do this if +the prior command is <kbd>C-y</kbd> or <kbd>M-y</kbd>. +</p></dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Readline-Arguments"> +<div class="header"> +<p> +Next: <a href="#Searching" accesskey="n" rel="next">Searching for Commands in the History</a>, Previous: <a href="#Readline-Killing-Commands" accesskey="p" rel="prev">Readline Killing Commands</a>, Up: <a href="#Readline-Interaction" accesskey="u" rel="up">Readline Interaction</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Arguments-1"></span><h4 class="subsection">1.2.4 Readline Arguments</h4> + +<p>You can pass numeric arguments to Readline commands. Sometimes the +argument acts as a repeat count, other times it is the <i>sign</i> of the +argument that is significant. If you pass a negative argument to a +command which normally acts in a forward direction, that command will +act in a backward direction. For example, to kill text back to the +start of the line, you might type ‘<samp>M-- C-k</samp>’. +</p> +<p>The general way to pass numeric arguments to a command is to type meta +digits before the command. If the first ‘digit’ typed is a minus +sign (‘<samp>-</samp>’), then the sign of the argument will be negative. Once +you have typed one meta digit to get the argument started, you can type +the remainder of the digits, and then the command. For example, to give +the <kbd>C-d</kbd> command an argument of 10, you could type ‘<samp>M-1 0 C-d</samp>’, +which will delete the next ten characters on the input line. +</p> +<hr> +</div> +<div class="subsection" id="Searching"> +<div class="header"> +<p> +Previous: <a href="#Readline-Arguments" accesskey="p" rel="prev">Readline Arguments</a>, Up: <a href="#Readline-Interaction" accesskey="u" rel="up">Readline Interaction</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Searching-for-Commands-in-the-History"></span><h4 class="subsection">1.2.5 Searching for Commands in the History</h4> + +<p>Readline provides commands for searching through the command history +for lines containing a specified string. +There are two search modes: <em>incremental</em> and <em>non-incremental</em>. +</p> +<p>Incremental searches begin before the user has finished typing the +search string. +As each character of the search string is typed, Readline displays +the next entry from the history matching the string typed so far. +An incremental search requires only as many characters as needed to +find the desired history entry. +To search backward in the history for a particular string, type +<kbd>C-r</kbd>. Typing <kbd>C-s</kbd> searches forward through the history. +The characters present in the value of the <code>isearch-terminators</code> variable +are used to terminate an incremental search. +If that variable has not been assigned a value, the <tt class="key">ESC</tt> and +<kbd>C-J</kbd> characters will terminate an incremental search. +<kbd>C-g</kbd> will abort an incremental search and restore the original line. +When the search is terminated, the history entry containing the +search string becomes the current line. +</p> +<p>To find other matching entries in the history list, type <kbd>C-r</kbd> or +<kbd>C-s</kbd> as appropriate. +This will search backward or forward in the history for the next +entry matching the search string typed so far. +Any other key sequence bound to a Readline command will terminate +the search and execute that command. +For instance, a <tt class="key">RET</tt> will terminate the search and accept +the line, thereby executing the command from the history list. +A movement command will terminate the search, make the last line found +the current line, and begin editing. +</p> +<p>Readline remembers the last incremental search string. If two +<kbd>C-r</kbd>s are typed without any intervening characters defining a new +search string, any remembered search string is used. +</p> +<p>Non-incremental searches read the entire search string before starting +to search for matching history lines. The search string may be +typed by the user or be part of the contents of the current line. +</p> +<hr> +</div> +</div> +<div class="section" id="Readline-Init-File"> +<div class="header"> +<p> +Next: <a href="#Bindable-Readline-Commands" accesskey="n" rel="next">Bindable Readline Commands</a>, Previous: <a href="#Readline-Interaction" accesskey="p" rel="prev">Readline Interaction</a>, Up: <a href="#Command-Line-Editing" accesskey="u" rel="up">Command Line Editing</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Init-File-1"></span><h3 class="section">1.3 Readline Init File</h3> +<span id="index-initialization-file_002c-readline"></span> + +<p>Although the Readline library comes with a set of Emacs-like +keybindings installed by default, it is possible to use a different set +of keybindings. +Any user can customize programs that use Readline by putting +commands in an <em>inputrc</em> file, +conventionally in their home directory. +The name of this +file is taken from the value of the environment variable <code>INPUTRC</code>. If +that variable is unset, the default is <samp>~/.inputrc</samp>. If that +file does not exist or cannot be read, the ultimate default is +<samp>/etc/inputrc</samp>. +</p> +<p>When a program which uses the Readline library starts up, the +init file is read, and the key bindings are set. +</p> +<p>In addition, the <code>C-x C-r</code> command re-reads this init file, thus +incorporating any changes that you might have made to it. +</p> + +<ul class="section-toc"> +<li><a href="#Readline-Init-File-Syntax" accesskey="1">Readline Init File Syntax</a></li> +<li><a href="#Conditional-Init-Constructs" accesskey="2">Conditional Init Constructs</a></li> +<li><a href="#Sample-Init-File" accesskey="3">Sample Init File</a></li> +</ul> +<hr> +<div class="subsection" id="Readline-Init-File-Syntax"> +<div class="header"> +<p> +Next: <a href="#Conditional-Init-Constructs" accesskey="n" rel="next">Conditional Init Constructs</a>, Up: <a href="#Readline-Init-File" accesskey="u" rel="up">Readline Init File</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-Init-File-Syntax-1"></span><h4 class="subsection">1.3.1 Readline Init File Syntax</h4> + +<p>There are only a few basic constructs allowed in the +Readline init file. Blank lines are ignored. +Lines beginning with a ‘<samp>#</samp>’ are comments. +Lines beginning with a ‘<samp>$</samp>’ indicate conditional +constructs (see <a href="#Conditional-Init-Constructs">Conditional Init Constructs</a>). Other lines +denote variable settings and key bindings. +</p> +<dl compact="compact"> +<dt><span>Variable Settings</span></dt> +<dd><p>You can modify the run-time behavior of Readline by +altering the values of variables in Readline +using the <code>set</code> command within the init file. +The syntax is simple: +</p> +<div class="example"> +<pre class="example">set <var>variable</var> <var>value</var> +</pre></div> + +<p>Here, for example, is how to +change from the default Emacs-like key binding to use +<code>vi</code> line editing commands: +</p> +<div class="example"> +<pre class="example">set editing-mode vi +</pre></div> + +<p>Variable names and values, where appropriate, are recognized without regard +to case. Unrecognized variable names are ignored. +</p> +<p>Boolean variables (those that can be set to on or off) are set to on if +the value is null or empty, <var>on</var> (case-insensitive), or 1. Any other +value results in the variable being set to off. +</p> + +<p>A great deal of run-time behavior is changeable with the following +variables. +</p> +<span id="index-variables_002c-readline"></span> +<dl compact="compact"> +<dt id='index-active_002dregion_002dstart_002dcolor'><span><code>active-region-start-color</code><a href='#index-active_002dregion_002dstart_002dcolor' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>A string variable that controls the text color and background when displaying +the text in the active region (see the description of +<code>enable-active-region</code> below). +This string must not take up any physical character positions on the display, +so it should consist only of terminal escape sequences. +It is output to the terminal before displaying the text in the active region. +This variable is reset to the default value whenever the terminal type changes. +The default value is the string that puts the terminal in standout mode, +as obtained from the terminal’s terminfo description. +A sample value might be ‘<samp>\e[01;33m</samp>’. +</p> +</dd> +<dt id='index-active_002dregion_002dend_002dcolor'><span><code>active-region-end-color</code><a href='#index-active_002dregion_002dend_002dcolor' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>A string variable that "undoes" the effects of <code>active-region-start-color</code> +and restores "normal" terminal display appearance after displaying text +in the active region. +This string must not take up any physical character positions on the display, +so it should consist only of terminal escape sequences. +It is output to the terminal after displaying the text in the active region. +This variable is reset to the default value whenever the terminal type changes. +The default value is the string that restores the terminal from standout mode, +as obtained from the terminal’s terminfo description. +A sample value might be ‘<samp>\e[0m</samp>’. +</p> +</dd> +<dt id='index-bell_002dstyle'><span><code>bell-style</code><a href='#index-bell_002dstyle' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Controls what happens when Readline wants to ring the terminal bell. +If set to ‘<samp>none</samp>’, Readline never rings the bell. If set to +‘<samp>visible</samp>’, Readline uses a visible bell if one is available. +If set to ‘<samp>audible</samp>’ (the default), Readline attempts to ring +the terminal’s bell. +</p> +</dd> +<dt id='index-bind_002dtty_002dspecial_002dchars'><span><code>bind-tty-special-chars</code><a href='#index-bind_002dtty_002dspecial_002dchars' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’ (the default), Readline attempts to bind the control +characters treated specially by the kernel’s terminal driver to their +Readline equivalents. +</p> +</dd> +<dt id='index-blink_002dmatching_002dparen'><span><code>blink-matching-paren</code><a href='#index-blink_002dmatching_002dparen' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline attempts to briefly move the cursor to an +opening parenthesis when a closing parenthesis is inserted. The default +is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-colored_002dcompletion_002dprefix'><span><code>colored-completion-prefix</code><a href='#index-colored_002dcompletion_002dprefix' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, when listing completions, Readline displays the +common prefix of the set of possible completions using a different color. +The color definitions are taken from the value of the <code>LS_COLORS</code> +environment variable. +If there is a color definition in <code>LS_COLORS</code> for the custom suffix +‘<samp>readline-colored-completion-prefix</samp>’, Readline uses this color for +the common prefix instead of its default. +The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-colored_002dstats'><span><code>colored-stats</code><a href='#index-colored_002dstats' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline displays possible completions using different +colors to indicate their file type. +The color definitions are taken from the value of the <code>LS_COLORS</code> +environment variable. +The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-comment_002dbegin'><span><code>comment-begin</code><a href='#index-comment_002dbegin' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The string to insert at the beginning of the line when the +<code>insert-comment</code> command is executed. The default value +is <code>"#"</code>. +</p> +</dd> +<dt id='index-completion_002ddisplay_002dwidth'><span><code>completion-display-width</code><a href='#index-completion_002ddisplay_002dwidth' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The number of screen columns used to display possible matches +when performing completion. +The value is ignored if it is less than 0 or greater than the terminal +screen width. +A value of 0 will cause matches to be displayed one per line. +The default value is -1. +</p> +</dd> +<dt id='index-completion_002dignore_002dcase'><span><code>completion-ignore-case</code><a href='#index-completion_002dignore_002dcase' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline performs filename matching and completion +in a case-insensitive fashion. +The default value is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-completion_002dmap_002dcase'><span><code>completion-map-case</code><a href='#index-completion_002dmap_002dcase' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, and <var>completion-ignore-case</var> is enabled, Readline +treats hyphens (‘<samp>-</samp>’) and underscores (‘<samp>_</samp>’) as equivalent when +performing case-insensitive filename matching and completion. +The default value is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-completion_002dprefix_002ddisplay_002dlength'><span><code>completion-prefix-display-length</code><a href='#index-completion_002dprefix_002ddisplay_002dlength' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The length in characters of the common prefix of a list of possible +completions that is displayed without modification. When set to a +value greater than zero, common prefixes longer than this value are +replaced with an ellipsis when displaying possible completions. +</p> +</dd> +<dt id='index-completion_002dquery_002ditems'><span><code>completion-query-items</code><a href='#index-completion_002dquery_002ditems' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 or equal to this value, +Readline will ask whether or not the user wishes to view them; +otherwise, they are simply listed. +This variable must be set to an integer value greater than or equal to zero. +A zero value means Readline should never ask; negative values are +treated as zero. +The default limit is <code>100</code>. +</p> +</dd> +<dt id='index-convert_002dmeta'><span><code>convert-meta</code><a href='#index-convert_002dmeta' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline will convert characters with the +eighth bit set to an <small>ASCII</small> key sequence by stripping the eighth +bit and prefixing an <tt class="key">ESC</tt> character, converting them to a +meta-prefixed key sequence. +The default value is ‘<samp>on</samp>’, but +will be set to ‘<samp>off</samp>’ if the locale is one that contains +eight-bit characters. +This variable is dependent on the <code>LC_CTYPE</code> locale category, and +may change if the locale is changed. +</p> +</dd> +<dt id='index-disable_002dcompletion'><span><code>disable-completion</code><a href='#index-disable_002dcompletion' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>On</samp>’, Readline will inhibit word completion. +Completion characters will be inserted into the line as if they had +been mapped to <code>self-insert</code>. The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-echo_002dcontrol_002dcharacters'><span><code>echo-control-characters</code><a href='#index-echo_002dcontrol_002dcharacters' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>When set to ‘<samp>on</samp>’, on operating systems that indicate they support it, +Readline echoes a character corresponding to a signal generated from the +keyboard. The default is ‘<samp>on</samp>’. +</p> +</dd> +<dt id='index-editing_002dmode'><span><code>editing-mode</code><a href='#index-editing_002dmode' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The <code>editing-mode</code> 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 ‘<samp>emacs</samp>’ or ‘<samp>vi</samp>’. +</p> +</dd> +<dt id='index-emacs_002dmode_002dstring'><span><code>emacs-mode-string</code><a href='#index-emacs_002dmode_002dstring' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If the <var>show-mode-in-prompt</var> variable is enabled, +this string is displayed immediately before the last line of the primary +prompt when emacs editing mode is active. The value is expanded like a +key binding, so the standard set of meta- and control prefixes and +backslash escape sequences is available. +Use the ‘<samp>\1</samp>’ and ‘<samp>\2</samp>’ escapes to begin and end sequences of +non-printing characters, which can be used to embed a terminal control +sequence into the mode string. +The default is ‘<samp>@</samp>’. +</p> +</dd> +<dt id='index-enable_002dactive_002dregion'><span><code>enable-active-region</code><a href='#index-enable_002dactive_002dregion' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The <em>point</em> is the current cursor position, and <em>mark</em> refers +to a saved cursor position (see <a href="#Commands-For-Moving">Commands For Moving</a>). +The text between the point and mark is referred to as the <em>region</em>. +When this variable is set to ‘<samp>On</samp>’, Readline allows certain commands +to designate the region as <em>active</em>. +When the region is active, Readline highlights the text in the region using +the value of the <code>active-region-start-color</code>, which defaults to the +string that enables +the terminal’s standout mode. +The active region shows the text inserted by bracketed-paste and any +matching text found by incremental and non-incremental history searches. +The default is ‘<samp>On</samp>’. +</p> +</dd> +<dt id='index-enable_002dbracketed_002dpaste'><span><code>enable-bracketed-paste</code><a href='#index-enable_002dbracketed_002dpaste' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>When set to ‘<samp>On</samp>’, Readline configures the terminal to insert each +paste into the editing buffer as a single string of characters, instead +of treating each character as if it had been read from the keyboard. +This is called putting the terminal into <em>bracketed paste mode</em>; +it prevents Readline from executing any editing commands bound to key +sequences appearing in the pasted text. +The default is ‘<samp>On</samp>’. +</p> +</dd> +<dt id='index-enable_002dkeypad'><span><code>enable-keypad</code><a href='#index-enable_002dkeypad' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>When set to ‘<samp>on</samp>’, Readline will try to enable the application +keypad when it is called. Some systems need this to enable the +arrow keys. The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt><span><code>enable-meta-key</code></span></dt> +<dd><p>When set to ‘<samp>on</samp>’, Readline will try to enable any meta modifier +key the terminal claims to support when it is called. On many terminals, +the meta key is used to send eight-bit characters. +The default is ‘<samp>on</samp>’. +</p> +</dd> +<dt id='index-expand_002dtilde'><span><code>expand-tilde</code><a href='#index-expand_002dtilde' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, tilde expansion is performed when Readline +attempts word completion. The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-history_002dpreserve_002dpoint'><span><code>history-preserve-point</code><a href='#index-history_002dpreserve_002dpoint' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, the history code attempts to place the point (the +current cursor position) at the +same location on each history line retrieved with <code>previous-history</code> +or <code>next-history</code>. The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-history_002dsize'><span><code>history-size</code><a href='#index-history_002dsize' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Set the maximum number of history entries saved in the history list. +If set to zero, any existing history entries are deleted and no new entries +are saved. +If set to a value less than zero, the number of history entries is not +limited. +By default, the number of history entries is not limited. +If an attempt is made to set <var>history-size</var> to a non-numeric value, +the maximum number of history entries will be set to 500. +</p> +</dd> +<dt id='index-horizontal_002dscroll_002dmode'><span><code>horizontal-scroll-mode</code><a href='#index-horizontal_002dscroll_002dmode' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>This variable can be set to either ‘<samp>on</samp>’ or ‘<samp>off</samp>’. Setting it +to ‘<samp>on</samp>’ 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. +This variable is automatically set to ‘<samp>on</samp>’ for terminals of height 1. +By default, this variable is set to ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-input_002dmeta'><span><code>input-meta</code><a href='#index-input_002dmeta' class='copiable-anchor'> ¶</a></span></dt> +<dd><span id="index-meta_002dflag"></span> +<p>If set to ‘<samp>on</samp>’, 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 ‘<samp>off</samp>’, but Readline will set it to ‘<samp>on</samp>’ if the +locale contains eight-bit characters. +The name <code>meta-flag</code> is a synonym for this variable. +This variable is dependent on the <code>LC_CTYPE</code> locale category, and +may change if the locale is changed. +</p> +</dd> +<dt id='index-isearch_002dterminators'><span><code>isearch-terminators</code><a href='#index-isearch_002dterminators' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The string of characters that should terminate an incremental search without +subsequently executing the character as a command (see <a href="#Searching">Searching for Commands in the History</a>). +If this variable has not been given a value, the characters <tt class="key">ESC</tt> and +<kbd>C-J</kbd> will terminate an incremental search. +</p> +</dd> +<dt id='index-keymap'><span><code>keymap</code><a href='#index-keymap' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Sets Readline’s idea of the current keymap for key binding commands. +Built-in <code>keymap</code> names are +<code>emacs</code>, +<code>emacs-standard</code>, +<code>emacs-meta</code>, +<code>emacs-ctlx</code>, +<code>vi</code>, +<code>vi-move</code>, +<code>vi-command</code>, and +<code>vi-insert</code>. +<code>vi</code> is equivalent to <code>vi-command</code> (<code>vi-move</code> is also a +synonym); <code>emacs</code> is equivalent to <code>emacs-standard</code>. +Applications may add additional names. +The default value is <code>emacs</code>. +The value of the <code>editing-mode</code> variable also affects the +default keymap. +</p> +</dd> +<dt><span><code>keyseq-timeout</code></span></dt> +<dd><p>Specifies the duration Readline will wait for a character when reading an +ambiguous key sequence (one that can form a complete key sequence using +the input read so far, or can take additional input to complete a longer +key sequence). +If no input is received within the timeout, Readline will use the shorter +but complete key sequence. +Readline uses this value to determine whether or not input is +available on the current input source (<code>rl_instream</code> by default). +The value is specified in milliseconds, so a value of 1000 means that +Readline will wait one second for additional input. +If this variable is set to a value less than or equal to zero, or to a +non-numeric value, Readline will wait until another key is pressed to +decide which key sequence to complete. +The default value is <code>500</code>. +</p> +</dd> +<dt><span><code>mark-directories</code></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, completed directory names have a slash +appended. The default is ‘<samp>on</samp>’. +</p> +</dd> +<dt id='index-mark_002dmodified_002dlines'><span><code>mark-modified-lines</code><a href='#index-mark_002dmodified_002dlines' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>This variable, when set to ‘<samp>on</samp>’, causes Readline to display an +asterisk (‘<samp>*</samp>’) at the start of history lines which have been modified. +This variable is ‘<samp>off</samp>’ by default. +</p> +</dd> +<dt id='index-mark_002dsymlinked_002ddirectories'><span><code>mark-symlinked-directories</code><a href='#index-mark_002dsymlinked_002ddirectories' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, completed names which are symbolic links +to directories have a slash appended (subject to the value of +<code>mark-directories</code>). +The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-match_002dhidden_002dfiles'><span><code>match-hidden-files</code><a href='#index-match_002dhidden_002dfiles' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>This variable, when set to ‘<samp>on</samp>’, causes Readline to match files whose +names begin with a ‘<samp>.</samp>’ (hidden files) when performing filename +completion. +If set to ‘<samp>off</samp>’, the leading ‘<samp>.</samp>’ must be +supplied by the user in the filename to be completed. +This variable is ‘<samp>on</samp>’ by default. +</p> +</dd> +<dt id='index-menu_002dcomplete_002ddisplay_002dprefix'><span><code>menu-complete-display-prefix</code><a href='#index-menu_002dcomplete_002ddisplay_002dprefix' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, menu completion displays the common prefix of the +list of possible completions (which may be empty) before cycling through +the list. The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-output_002dmeta'><span><code>output-meta</code><a href='#index-output_002dmeta' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline will display characters with the +eighth bit set directly rather than as a meta-prefixed escape +sequence. +The default is ‘<samp>off</samp>’, but Readline will set it to ‘<samp>on</samp>’ if the +locale contains eight-bit characters. +This variable is dependent on the <code>LC_CTYPE</code> locale category, and +may change if the locale is changed. +</p> +</dd> +<dt id='index-page_002dcompletions'><span><code>page-completions</code><a href='#index-page_002dcompletions' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline uses an internal <code>more</code>-like pager +to display a screenful of possible completions at a time. +This variable is ‘<samp>on</samp>’ by default. +</p> +</dd> +<dt><span><code>print-completions-horizontally</code></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline will display completions with matches +sorted horizontally in alphabetical order, rather than down the screen. +The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-revert_002dall_002dat_002dnewline'><span><code>revert-all-at-newline</code><a href='#index-revert_002dall_002dat_002dnewline' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, Readline will undo all changes to history lines +before returning when <code>accept-line</code> is executed. By default, +history lines may be modified and retain individual undo lists across +calls to <code>readline()</code>. The default is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-show_002dall_002dif_002dambiguous'><span><code>show-all-if-ambiguous</code><a href='#index-show_002dall_002dif_002dambiguous' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>This alters the default behavior of the completion functions. If +set to ‘<samp>on</samp>’, +words which have more than one possible completion cause the +matches to be listed immediately instead of ringing the bell. +The default value is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-show_002dall_002dif_002dunmodified'><span><code>show-all-if-unmodified</code><a href='#index-show_002dall_002dif_002dunmodified' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>This alters the default behavior of the completion functions in +a fashion similar to <var>show-all-if-ambiguous</var>. +If set to ‘<samp>on</samp>’, +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 ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-show_002dmode_002din_002dprompt'><span><code>show-mode-in-prompt</code><a href='#index-show_002dmode_002din_002dprompt' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, add a string to the beginning of the prompt +indicating the editing mode: emacs, vi command, or vi insertion. +The mode strings are user-settable (e.g., <var>emacs-mode-string</var>). +The default value is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-skip_002dcompleted_002dtext'><span><code>skip-completed-text</code><a href='#index-skip_002dcompleted_002dtext' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, this alters the default completion behavior when +inserting a single match into the line. It’s only active when +performing completion in the middle of a word. If enabled, Readline +does not insert characters from the completion that match characters +after point in the word being completed, so portions of the word +following the cursor are not duplicated. +For instance, if this is enabled, attempting completion when the cursor +is after the ‘<samp>e</samp>’ in ‘<samp>Makefile</samp>’ will result in ‘<samp>Makefile</samp>’ +rather than ‘<samp>Makefilefile</samp>’, assuming there is a single possible +completion. +The default value is ‘<samp>off</samp>’. +</p> +</dd> +<dt id='index-vi_002dcmd_002dmode_002dstring'><span><code>vi-cmd-mode-string</code><a href='#index-vi_002dcmd_002dmode_002dstring' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If the <var>show-mode-in-prompt</var> variable is enabled, +this string is displayed immediately before the last line of the primary +prompt when vi editing mode is active and in command mode. +The value is expanded like a +key binding, so the standard set of meta- and control prefixes and +backslash escape sequences is available. +Use the ‘<samp>\1</samp>’ and ‘<samp>\2</samp>’ escapes to begin and end sequences of +non-printing characters, which can be used to embed a terminal control +sequence into the mode string. +The default is ‘<samp>(cmd)</samp>’. +</p> +</dd> +<dt id='index-vi_002dins_002dmode_002dstring'><span><code>vi-ins-mode-string</code><a href='#index-vi_002dins_002dmode_002dstring' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If the <var>show-mode-in-prompt</var> variable is enabled, +this string is displayed immediately before the last line of the primary +prompt when vi editing mode is active and in insertion mode. +The value is expanded like a +key binding, so the standard set of meta- and control prefixes and +backslash escape sequences is available. +Use the ‘<samp>\1</samp>’ and ‘<samp>\2</samp>’ escapes to begin and end sequences of +non-printing characters, which can be used to embed a terminal control +sequence into the mode string. +The default is ‘<samp>(ins)</samp>’. +</p> +</dd> +<dt id='index-visible_002dstats'><span><code>visible-stats</code><a href='#index-visible_002dstats' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If set to ‘<samp>on</samp>’, a character denoting a file’s type +is appended to the filename when listing possible +completions. The default is ‘<samp>off</samp>’. +</p> +</dd> +</dl> + +</dd> +<dt><span>Key Bindings</span></dt> +<dd><p>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. +</p> +<p>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. +There can be no space between the key name and the colon – that will be +interpreted as part of the key name. +The name of the key can be expressed in different ways, depending on +what you find most comfortable. +</p> +<p>In addition to command names, Readline allows keys to be bound +to a string that is inserted when the key is pressed (a <var>macro</var>). +</p> + +<dl compact="compact"> +<dt><span><var>keyname</var>: <var><span class="nolinebreak">function-name</span></var> or <var>macro</var><!-- /@w --></span></dt> +<dd><p><var>keyname</var> is the name of a key spelled out in English. For example: +</p><div class="example"> +<pre class="example">Control-u: universal-argument +Meta-Rubout: backward-kill-word +Control-o: "> output" +</pre></div> + +<p>In the example above, <kbd>C-u</kbd> is bound to the function +<code>universal-argument</code>, +<kbd>M-DEL</kbd> is bound to the function <code>backward-kill-word</code>, and +<kbd>C-o</kbd> is bound to run the macro +expressed on the right hand side (that is, to insert the text +‘<samp>> output</samp>’ into the line). +</p> +<p>A number of symbolic character names are recognized while +processing this key binding syntax: +<var>DEL</var>, +<var>ESC</var>, +<var>ESCAPE</var>, +<var>LFD</var>, +<var>NEWLINE</var>, +<var>RET</var>, +<var>RETURN</var>, +<var>RUBOUT</var>, +<var>SPACE</var>, +<var>SPC</var>, +and +<var>TAB</var>. +</p> +</dd> +<dt><span>"<var>keyseq</var>": <var><span class="nolinebreak">function-name</span></var> or <var>macro</var><!-- /@w --></span></dt> +<dd><p><var>keyseq</var> differs from <var>keyname</var> above in that strings +denoting an entire key sequence can be specified, by placing +the key sequence in double quotes. Some <small>GNU</small> Emacs style key +escapes can be used, as in the following example, but the +special character names are not recognized. +</p> +<div class="example"> +<pre class="example">"\C-u": universal-argument +"\C-x\C-r": re-read-init-file +"\e[11~": "Function Key 1" +</pre></div> + +<p>In the above example, <kbd>C-u</kbd> is again bound to the function +<code>universal-argument</code> (just as it was in the first example), +‘<samp><kbd>C-x</kbd> <kbd>C-r</kbd></samp>’ is bound to the function <code>re-read-init-file</code>, +and ‘<samp><span class="key">ESC</span> <span class="key">[</span> <span class="key">1</span> <span class="key">1</span> <span class="key">~</span></samp>’ is bound to insert +the text ‘<samp>Function Key 1</samp>’. +</p> +</dd> +</dl> + +<p>The following <small>GNU</small> Emacs style escape sequences are available when +specifying key sequences: +</p> +<dl compact="compact"> +<dt><span><code><kbd>\C-</kbd></code></span></dt> +<dd><p>control prefix +</p></dd> +<dt><span><code><kbd>\M-</kbd></code></span></dt> +<dd><p>meta prefix +</p></dd> +<dt><span><code><kbd>\e</kbd></code></span></dt> +<dd><p>an escape character +</p></dd> +<dt><span><code><kbd>\\</kbd></code></span></dt> +<dd><p>backslash +</p></dd> +<dt><span><code><kbd>\"</kbd></code></span></dt> +<dd><p><tt class="key">"</tt>, a double quotation mark +</p></dd> +<dt><span><code><kbd>\'</kbd></code></span></dt> +<dd><p><tt class="key">'</tt>, a single quote or apostrophe +</p></dd> +</dl> + +<p>In addition to the <small>GNU</small> Emacs style escape sequences, a second +set of backslash escapes is available: +</p> +<dl compact="compact"> +<dt><span><code>\a</code></span></dt> +<dd><p>alert (bell) +</p></dd> +<dt><span><code>\b</code></span></dt> +<dd><p>backspace +</p></dd> +<dt><span><code>\d</code></span></dt> +<dd><p>delete +</p></dd> +<dt><span><code>\f</code></span></dt> +<dd><p>form feed +</p></dd> +<dt><span><code>\n</code></span></dt> +<dd><p>newline +</p></dd> +<dt><span><code>\r</code></span></dt> +<dd><p>carriage return +</p></dd> +<dt><span><code>\t</code></span></dt> +<dd><p>horizontal tab +</p></dd> +<dt><span><code>\v</code></span></dt> +<dd><p>vertical tab +</p></dd> +<dt><span><code>\<var>nnn</var></code></span></dt> +<dd><p>the eight-bit character whose value is the octal value <var>nnn</var> +(one to three digits) +</p></dd> +<dt><span><code>\x<var>HH</var></code></span></dt> +<dd><p>the eight-bit character whose value is the hexadecimal value <var>HH</var> +(one or two hex digits) +</p></dd> +</dl> + +<p>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 ‘<samp>"</samp>’ and ‘<samp>'</samp>’. +For example, the following binding will make ‘<samp><kbd>C-x</kbd> \</samp>’ +insert a single ‘<samp>\</samp>’ into the line: +</p><div class="example"> +<pre class="example">"\C-x\\": "\\" +</pre></div> + +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Conditional-Init-Constructs"> +<div class="header"> +<p> +Next: <a href="#Sample-Init-File" accesskey="n" rel="next">Sample Init File</a>, Previous: <a href="#Readline-Init-File-Syntax" accesskey="p" rel="prev">Readline Init File Syntax</a>, Up: <a href="#Readline-Init-File" accesskey="u" rel="up">Readline Init File</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Conditional-Init-Constructs-1"></span><h4 class="subsection">1.3.2 Conditional Init Constructs</h4> + +<p>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. +</p> +<dl compact="compact"> +<dt><span><code>$if</code></span></dt> +<dd><p>The <code>$if</code> construct allows bindings to be made based on the +editing mode, the terminal being used, or the application using +Readline. The text of the test, after any comparison operator, +extends to the end of the line; +unless otherwise noted, no characters are required to isolate it. +</p> +<dl compact="compact"> +<dt><span><code>mode</code></span></dt> +<dd><p>The <code>mode=</code> form of the <code>$if</code> directive is used to test +whether Readline is in <code>emacs</code> or <code>vi</code> mode. +This may be used in conjunction +with the ‘<samp>set keymap</samp>’ command, for instance, to set bindings in +the <code>emacs-standard</code> and <code>emacs-ctlx</code> keymaps only if +Readline is starting out in <code>emacs</code> mode. +</p> +</dd> +<dt><span><code>term</code></span></dt> +<dd><p>The <code>term=</code> 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 +‘<samp>=</samp>’ is tested against both the full name of the terminal and +the portion of the terminal name before the first ‘<samp>-</samp>’. This +allows <code>sun</code> to match both <code>sun</code> and <code>sun-cmd</code>, +for instance. +</p> +</dd> +<dt><span><code>version</code></span></dt> +<dd><p>The <code>version</code> test may be used to perform comparisons against +specific Readline versions. +The <code>version</code> expands to the current Readline version. +The set of comparison operators includes +‘<samp>=</samp>’ (and ‘<samp>==</samp>’), ‘<samp>!=</samp>’, ‘<samp><=</samp>’, ‘<samp>>=</samp>’, ‘<samp><</samp>’, +and ‘<samp>></samp>’. +The version number supplied on the right side of the operator consists +of a major version number, an optional decimal point, and an optional +minor version (e.g., ‘<samp>7.1</samp>’). If the minor version is omitted, it +is assumed to be ‘<samp>0</samp>’. +The operator may be separated from the string <code>version</code> and +from the version number argument by whitespace. +The following example sets a variable if the Readline version being used +is 7.0 or newer: +</p><div class="example"> +<pre class="example">$if version >= 7.0 +set show-mode-in-prompt on +$endif +</pre></div> + +</dd> +<dt><span><code>application</code></span></dt> +<dd><p>The <var>application</var> construct is used to include +application-specific settings. Each program using the Readline +library sets the <var>application name</var>, 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: +</p><div class="example"> +<pre class="example">$if Bash +# Quote the current or previous word +"\C-xq": "\eb\"\ef\"" +$endif +</pre></div> + +</dd> +<dt><span><code>variable</code></span></dt> +<dd><p>The <var>variable</var> construct provides simple equality tests for Readline +variables and values. +The permitted comparison operators are ‘<samp>=</samp>’, ‘<samp>==</samp>’, and ‘<samp>!=</samp>’. +The variable name must be separated from the comparison operator by +whitespace; the operator may be separated from the value on the right hand +side by whitespace. +Both string and boolean variables may be tested. Boolean variables must be +tested against the values <var>on</var> and <var>off</var>. +The following example is equivalent to the <code>mode=emacs</code> test described +above: +</p><div class="example"> +<pre class="example">$if editing-mode == emacs +set show-mode-in-prompt on +$endif +</pre></div> +</dd> +</dl> + +</dd> +<dt><span><code>$endif</code></span></dt> +<dd><p>This command, as seen in the previous example, terminates an +<code>$if</code> command. +</p> +</dd> +<dt><span><code>$else</code></span></dt> +<dd><p>Commands in this branch of the <code>$if</code> directive are executed if +the test fails. +</p> +</dd> +<dt><span><code>$include</code></span></dt> +<dd><p>This directive takes a single filename as an argument and reads commands +and bindings from that file. +For example, the following directive reads from <samp>/etc/inputrc</samp>: +</p><div class="example"> +<pre class="example">$include /etc/inputrc +</pre></div> +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Sample-Init-File"> +<div class="header"> +<p> +Previous: <a href="#Conditional-Init-Constructs" accesskey="p" rel="prev">Conditional Init Constructs</a>, Up: <a href="#Readline-Init-File" accesskey="u" rel="up">Readline Init File</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Sample-Init-File-1"></span><h4 class="subsection">1.3.3 Sample Init File</h4> + +<p>Here is an example of an <var>inputrc</var> file. This illustrates key +binding, variable assignment, and conditional syntax. +</p> +<div class="example"> +<pre class="example"># 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 system-wide 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=" +$endif + +# use a visible bell if one is available +set bell-style visible + +# don't strip characters to 7 bits when reading +set input-meta on + +# allow iso-latin1 characters to be inserted rather +# than converted to prefix-meta sequences +set convert-meta off + +# display characters with the eighth bit set directly +# rather than as meta-prefixed characters +set output-meta on + +# if there are 150 or more possible completions for a word, +# ask whether or not the user wants to see all of them +set completion-query-items 150 + +# For FTP +$if Ftp +"\C-xg": "get \M-?" +"\C-xt": "put \M-?" +"\M-.": yank-last-arg +$endif +</pre></div> + +<hr> +</div> +</div> +<div class="section" id="Bindable-Readline-Commands"> +<div class="header"> +<p> +Next: <a href="#Readline-vi-Mode" accesskey="n" rel="next">Readline vi Mode</a>, Previous: <a href="#Readline-Init-File" accesskey="p" rel="prev">Readline Init File</a>, Up: <a href="#Command-Line-Editing" accesskey="u" rel="up">Command Line Editing</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Bindable-Readline-Commands-1"></span><h3 class="section">1.4 Bindable Readline Commands</h3> + + +<p>This section describes Readline commands that may be bound to key +sequences. +Command names without an accompanying key sequence are unbound by default. +</p> +<p>In the following descriptions, <em>point</em> refers to the current cursor +position, and <em>mark</em> refers to a cursor position saved by the +<code>set-mark</code> command. +The text between the point and mark is referred to as the <em>region</em>. +</p> +<ul class="section-toc"> +<li><a href="#Commands-For-Moving" accesskey="1">Commands For Moving</a></li> +<li><a href="#Commands-For-History" accesskey="2">Commands For Manipulating The History</a></li> +<li><a href="#Commands-For-Text" accesskey="3">Commands For Changing Text</a></li> +<li><a href="#Commands-For-Killing" accesskey="4">Killing And Yanking</a></li> +<li><a href="#Numeric-Arguments" accesskey="5">Specifying Numeric Arguments</a></li> +<li><a href="#Commands-For-Completion" accesskey="6">Letting Readline Type For You</a></li> +<li><a href="#Keyboard-Macros" accesskey="7">Keyboard Macros</a></li> +<li><a href="#Miscellaneous-Commands" accesskey="8">Some Miscellaneous Commands</a></li> +</ul> +<hr> +<div class="subsection" id="Commands-For-Moving"> +<div class="header"> +<p> +Next: <a href="#Commands-For-History" accesskey="n" rel="next">Commands For Manipulating The History</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Commands-For-Moving-1"></span><h4 class="subsection">1.4.1 Commands For Moving</h4> +<dl compact="compact"> +<dt id='index-beginning_002dof_002dline-_0028C_002da_0029'><span><code>beginning-of-line (C-a)</code><a href='#index-beginning_002dof_002dline-_0028C_002da_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move to the start of the current line. +</p> +</dd> +<dt id='index-end_002dof_002dline-_0028C_002de_0029'><span><code>end-of-line (C-e)</code><a href='#index-end_002dof_002dline-_0028C_002de_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move to the end of the line. +</p> +</dd> +<dt id='index-forward_002dchar-_0028C_002df_0029'><span><code>forward-char (C-f)</code><a href='#index-forward_002dchar-_0028C_002df_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move forward a character. +</p> +</dd> +<dt id='index-backward_002dchar-_0028C_002db_0029'><span><code>backward-char (C-b)</code><a href='#index-backward_002dchar-_0028C_002db_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move back a character. +</p> +</dd> +<dt id='index-forward_002dword-_0028M_002df_0029'><span><code>forward-word (M-f)</code><a href='#index-forward_002dword-_0028M_002df_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move forward to the end of the next word. +Words are composed of letters and digits. +</p> +</dd> +<dt id='index-backward_002dword-_0028M_002db_0029'><span><code>backward-word (M-b)</code><a href='#index-backward_002dword-_0028M_002db_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move back to the start of the current or previous word. +Words are composed of letters and digits. +</p> + +</dd> +<dt id='index-previous_002dscreen_002dline-_0028_0029'><span><code>previous-screen-line ()</code><a href='#index-previous_002dscreen_002dline-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Attempt to move point to the same physical screen column on the previous +physical screen line. This will not have the desired effect if the current +Readline line does not take up more than one physical line or if point is not +greater than the length of the prompt plus the screen width. +</p> +</dd> +<dt id='index-next_002dscreen_002dline-_0028_0029'><span><code>next-screen-line ()</code><a href='#index-next_002dscreen_002dline-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Attempt to move point to the same physical screen column on the next +physical screen line. This will not have the desired effect if the current +Readline line does not take up more than one physical line or if the length +of the current Readline line is not greater than the length of the prompt +plus the screen width. +</p> +</dd> +<dt id='index-clear_002ddisplay-_0028M_002dC_002dl_0029'><span><code>clear-display (M-C-l)</code><a href='#index-clear_002ddisplay-_0028M_002dC_002dl_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Clear the screen and, if possible, the terminal’s scrollback buffer, +then redraw the current line, +leaving the current line at the top of the screen. +</p> +</dd> +<dt id='index-clear_002dscreen-_0028C_002dl_0029'><span><code>clear-screen (C-l)</code><a href='#index-clear_002dscreen-_0028C_002dl_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Clear the screen, +then redraw the current line, +leaving the current line at the top of the screen. +</p> +</dd> +<dt id='index-redraw_002dcurrent_002dline-_0028_0029'><span><code>redraw-current-line ()</code><a href='#index-redraw_002dcurrent_002dline-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Refresh the current line. By default, this is unbound. +</p> +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Commands-For-History"> +<div class="header"> +<p> +Next: <a href="#Commands-For-Text" accesskey="n" rel="next">Commands For Changing Text</a>, Previous: <a href="#Commands-For-Moving" accesskey="p" rel="prev">Commands For Moving</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Commands-For-Manipulating-The-History"></span><h4 class="subsection">1.4.2 Commands For Manipulating The History</h4> + +<dl compact="compact"> +<dt id='index-accept_002dline-_0028Newline-or-Return_0029'><span><code>accept-line (Newline or Return)</code><a href='#index-accept_002dline-_0028Newline-or-Return_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 +<code>add_history()</code>. +If this line is a modified history line, the history line is restored +to its original state. +</p> +</dd> +<dt id='index-previous_002dhistory-_0028C_002dp_0029'><span><code>previous-history (C-p)</code><a href='#index-previous_002dhistory-_0028C_002dp_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move ‘back’ through the history list, fetching the previous command. +</p> +</dd> +<dt id='index-next_002dhistory-_0028C_002dn_0029'><span><code>next-history (C-n)</code><a href='#index-next_002dhistory-_0028C_002dn_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move ‘forward’ through the history list, fetching the next command. +</p> +</dd> +<dt id='index-beginning_002dof_002dhistory-_0028M_002d_003c_0029'><span><code>beginning-of-history (M-<)</code><a href='#index-beginning_002dof_002dhistory-_0028M_002d_003c_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move to the first line in the history. +</p> +</dd> +<dt id='index-end_002dof_002dhistory-_0028M_002d_003e_0029'><span><code>end-of-history (M->)</code><a href='#index-end_002dof_002dhistory-_0028M_002d_003e_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Move to the end of the input history, i.e., the line currently +being entered. +</p> +</dd> +<dt id='index-reverse_002dsearch_002dhistory-_0028C_002dr_0029'><span><code>reverse-search-history (C-r)</code><a href='#index-reverse_002dsearch_002dhistory-_0028C_002dr_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search backward starting at the current line and moving ‘up’ through +the history as necessary. This is an incremental search. +This command sets the region to the matched text and activates the mark. +</p> +</dd> +<dt id='index-forward_002dsearch_002dhistory-_0028C_002ds_0029'><span><code>forward-search-history (C-s)</code><a href='#index-forward_002dsearch_002dhistory-_0028C_002ds_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search forward starting at the current line and moving ‘down’ through +the history as necessary. This is an incremental search. +This command sets the region to the matched text and activates the mark. +</p> +</dd> +<dt id='index-non_002dincremental_002dreverse_002dsearch_002dhistory-_0028M_002dp_0029'><span><code>non-incremental-reverse-search-history (M-p)</code><a href='#index-non_002dincremental_002dreverse_002dsearch_002dhistory-_0028M_002dp_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><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. +The search string may match anywhere in a history line. +</p> +</dd> +<dt id='index-non_002dincremental_002dforward_002dsearch_002dhistory-_0028M_002dn_0029'><span><code>non-incremental-forward-search-history (M-n)</code><a href='#index-non_002dincremental_002dforward_002dsearch_002dhistory-_0028M_002dn_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search forward starting at the current line and moving ‘down’ +through the history as necessary using a non-incremental search +for a string supplied by the user. +The search string may match anywhere in a history line. +</p> +</dd> +<dt id='index-history_002dsearch_002dforward-_0028_0029'><span><code>history-search-forward ()</code><a href='#index-history_002dsearch_002dforward-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search forward through the history for the string of characters +between the start of the current line and the point. +The search string must match at the beginning of a history line. +This is a non-incremental search. +By default, this command is unbound. +</p> +</dd> +<dt id='index-history_002dsearch_002dbackward-_0028_0029'><span><code>history-search-backward ()</code><a href='#index-history_002dsearch_002dbackward-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search backward through the history for the string of characters +between the start of the current line and the point. +The search string must match at the beginning of a history line. +This is a non-incremental search. +By default, this command is unbound. +</p> +</dd> +<dt id='index-history_002dsubstring_002dsearch_002dforward-_0028_0029'><span><code>history-substring-search-forward ()</code><a href='#index-history_002dsubstring_002dsearch_002dforward-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search forward through the history for the string of characters +between the start of the current line and the point. +The search string may match anywhere in a history line. +This is a non-incremental search. +By default, this command is unbound. +</p> +</dd> +<dt id='index-history_002dsubstring_002dsearch_002dbackward-_0028_0029'><span><code>history-substring-search-backward ()</code><a href='#index-history_002dsubstring_002dsearch_002dbackward-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Search backward through the history for the string of characters +between the start of the current line and the point. +The search string may match anywhere in a history line. +This is a non-incremental search. +By default, this command is unbound. +</p> +</dd> +<dt id='index-yank_002dnth_002darg-_0028M_002dC_002dy_0029'><span><code>yank-nth-arg (M-C-y)</code><a href='#index-yank_002dnth_002darg-_0028M_002dC_002dy_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Insert the first argument to the previous command (usually +the second word on the previous line) at point. +With an argument <var>n</var>, +insert the <var>n</var>th word from the previous command (the words +in the previous command begin with word 0). A negative argument +inserts the <var>n</var>th word from the end of the previous command. +Once the argument <var>n</var> is computed, the argument is extracted +as if the ‘<samp>!<var>n</var></samp>’ history expansion had been specified. +</p> +</dd> +<dt id='index-yank_002dlast_002darg-_0028M_002d_002e-or-M_002d_005f_0029'><span><code>yank-last-arg (M-. or M-_)</code><a href='#index-yank_002dlast_002darg-_0028M_002d_002e-or-M_002d_005f_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Insert last argument to the previous command (the last word of the +previous history entry). +With a numeric argument, behave exactly like <code>yank-nth-arg</code>. +Successive calls to <code>yank-last-arg</code> move back through the history +list, inserting the last word (or the word specified by the argument to +the first call) of each line in turn. +Any numeric argument supplied to these successive calls determines +the direction to move through the history. A negative argument switches +the direction through the history (back or forward). +The history expansion facilities are used to extract the last argument, +as if the ‘<samp>!$</samp>’ history expansion had been specified. +</p> +</dd> +<dt id='index-operate_002dand_002dget_002dnext-_0028C_002do_0029'><span><code>operate-and-get-next (C-o)</code><a href='#index-operate_002dand_002dget_002dnext-_0028C_002do_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Accept the current line for return to the calling application as if a +newline had been entered, +and fetch the next line relative to the current line from the history +for editing. +A numeric argument, if supplied, specifies the history entry to use instead +of the current line. +</p> +</dd> +<dt id='index-fetch_002dhistory-_0028_0029'><span><code>fetch-history ()</code><a href='#index-fetch_002dhistory-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>With a numeric argument, fetch that entry from the history list +and make it the current line. +Without an argument, move back to the first entry in the history list. +</p> +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Commands-For-Text"> +<div class="header"> +<p> +Next: <a href="#Commands-For-Killing" accesskey="n" rel="next">Killing And Yanking</a>, Previous: <a href="#Commands-For-History" accesskey="p" rel="prev">Commands For Manipulating The History</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Commands-For-Changing-Text"></span><h4 class="subsection">1.4.3 Commands For Changing Text</h4> + +<dl compact="compact"> +<dt id='index-end_002dof_002dfile-_0028usually-C_002dd_0029'><span><code><i>end-of-file</i> (usually C-d)</code><a href='#index-end_002dof_002dfile-_0028usually-C_002dd_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>The character indicating end-of-file as set, for example, by +<code>stty</code>. If this character is read when there are no characters +on the line, and point is at the beginning of the line, Readline +interprets it as the end of input and returns <small>EOF</small>. +</p> +</dd> +<dt id='index-delete_002dchar-_0028C_002dd_0029'><span><code>delete-char (C-d)</code><a href='#index-delete_002dchar-_0028C_002dd_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Delete the character at point. If this function is bound to the +same character as the tty <small>EOF</small> character, as <kbd>C-d</kbd> +commonly is, see above for the effects. +</p> +</dd> +<dt id='index-backward_002ddelete_002dchar-_0028Rubout_0029'><span><code>backward-delete-char (Rubout)</code><a href='#index-backward_002ddelete_002dchar-_0028Rubout_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Delete the character behind the cursor. A numeric argument means +to kill the characters instead of deleting them. +</p> +</dd> +<dt id='index-forward_002dbackward_002ddelete_002dchar-_0028_0029'><span><code>forward-backward-delete-char ()</code><a href='#index-forward_002dbackward_002ddelete_002dchar-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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. +</p> +</dd> +<dt id='index-quoted_002dinsert-_0028C_002dq-or-C_002dv_0029'><span><code>quoted-insert (C-q or C-v)</code><a href='#index-quoted_002dinsert-_0028C_002dq-or-C_002dv_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Add the next character typed to the line verbatim. This is +how to insert key sequences like <kbd>C-q</kbd>, for example. +</p> +</dd> +<dt id='index-tab_002dinsert-_0028M_002dTAB_0029'><span><code>tab-insert (M-<span class="key">TAB</span>)</code><a href='#index-tab_002dinsert-_0028M_002dTAB_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Insert a tab character. +</p> +</dd> +<dt id='index-self_002dinsert-_0028a_002c-b_002c-A_002c-1_002c-_0021_002c-_2026_0029'><span><code>self-insert (a, b, A, 1, !, …)</code><a href='#index-self_002dinsert-_0028a_002c-b_002c-A_002c-1_002c-_0021_002c-_2026_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Insert yourself. +</p> +</dd> +<dt id='index-bracketed_002dpaste_002dbegin-_0028_0029'><span><code>bracketed-paste-begin ()</code><a href='#index-bracketed_002dpaste_002dbegin-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>This function is intended to be bound to the "bracketed paste" escape +sequence sent by some terminals, and such a binding is assigned by default. +It allows Readline to insert the pasted text as a single unit without treating +each character as if it had been read from the keyboard. The characters +are inserted as if each one was bound to <code>self-insert</code> instead of +executing any editing commands. +</p> +<p>Bracketed paste sets the region (the characters between point and the mark) +to the inserted text. It uses the concept of an <em>active mark</em>: when the +mark is active, Readline redisplay uses the terminal’s standout mode to +denote the region. +</p> +</dd> +<dt id='index-transpose_002dchars-_0028C_002dt_0029'><span><code>transpose-chars (C-t)</code><a href='#index-transpose_002dchars-_0028C_002dt_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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. +</p> +</dd> +<dt id='index-transpose_002dwords-_0028M_002dt_0029'><span><code>transpose-words (M-t)</code><a href='#index-transpose_002dwords-_0028M_002dt_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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. +</p> +</dd> +<dt id='index-upcase_002dword-_0028M_002du_0029'><span><code>upcase-word (M-u)</code><a href='#index-upcase_002dword-_0028M_002du_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Uppercase the current (or following) word. With a negative argument, +uppercase the previous word, but do not move the cursor. +</p> +</dd> +<dt id='index-downcase_002dword-_0028M_002dl_0029'><span><code>downcase-word (M-l)</code><a href='#index-downcase_002dword-_0028M_002dl_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Lowercase the current (or following) word. With a negative argument, +lowercase the previous word, but do not move the cursor. +</p> +</dd> +<dt id='index-capitalize_002dword-_0028M_002dc_0029'><span><code>capitalize-word (M-c)</code><a href='#index-capitalize_002dword-_0028M_002dc_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Capitalize the current (or following) word. With a negative argument, +capitalize the previous word, but do not move the cursor. +</p> +</dd> +<dt id='index-overwrite_002dmode-_0028_0029'><span><code>overwrite-mode ()</code><a href='#index-overwrite_002dmode-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 +<code>emacs</code> mode; <code>vi</code> mode does overwrite differently. +Each call to <code>readline()</code> starts in insert mode. +</p> +<p>In overwrite mode, characters bound to <code>self-insert</code> replace +the text at point rather than pushing the text to the right. +Characters bound to <code>backward-delete-char</code> replace the character +before point with a space. +</p> +<p>By default, this command is unbound. +</p> +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Commands-For-Killing"> +<div class="header"> +<p> +Next: <a href="#Numeric-Arguments" accesskey="n" rel="next">Specifying Numeric Arguments</a>, Previous: <a href="#Commands-For-Text" accesskey="p" rel="prev">Commands For Changing Text</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Killing-And-Yanking"></span><h4 class="subsection">1.4.4 Killing And Yanking</h4> + +<dl compact="compact"> +<dt id='index-kill_002dline-_0028C_002dk_0029'><span><code>kill-line (C-k)</code><a href='#index-kill_002dline-_0028C_002dk_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill the text from point to the end of the line. +With a negative numeric argument, kill backward from the cursor to the +beginning of the current line. +</p> +</dd> +<dt id='index-backward_002dkill_002dline-_0028C_002dx-Rubout_0029'><span><code>backward-kill-line (C-x Rubout)</code><a href='#index-backward_002dkill_002dline-_0028C_002dx-Rubout_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill backward from the cursor to the beginning of the current line. +With a negative numeric argument, kill forward from the cursor to the +end of the current line. +</p> +</dd> +<dt id='index-unix_002dline_002ddiscard-_0028C_002du_0029'><span><code>unix-line-discard (C-u)</code><a href='#index-unix_002dline_002ddiscard-_0028C_002du_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill backward from the cursor to the beginning of the current line. +</p> +</dd> +<dt id='index-kill_002dwhole_002dline-_0028_0029'><span><code>kill-whole-line ()</code><a href='#index-kill_002dwhole_002dline-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill all characters on the current line, no matter where point is. +By default, this is unbound. +</p> +</dd> +<dt id='index-kill_002dword-_0028M_002dd_0029'><span><code>kill-word (M-d)</code><a href='#index-kill_002dword-_0028M_002dd_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 <code>forward-word</code>. +</p> +</dd> +<dt id='index-backward_002dkill_002dword-_0028M_002dDEL_0029'><span><code>backward-kill-word (M-<span class="key">DEL</span>)</code><a href='#index-backward_002dkill_002dword-_0028M_002dDEL_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill the word behind point. +Word boundaries are the same as <code>backward-word</code>. +</p> + +</dd> +<dt id='index-shell_002dtranspose_002dwords-_0028M_002dC_002dt_0029'><span><code>shell-transpose-words (M-C-t)</code><a href='#index-shell_002dtranspose_002dwords-_0028M_002dC_002dt_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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. +Word boundaries are the same as <code>shell-forward-word</code> and +<code>shell-backward-word</code>. +</p> +</dd> +<dt id='index-unix_002dword_002drubout-_0028C_002dw_0029'><span><code>unix-word-rubout (C-w)</code><a href='#index-unix_002dword_002drubout-_0028C_002dw_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill the word behind point, using white space as a word boundary. +The killed text is saved on the kill-ring. +</p> +</dd> +<dt id='index-unix_002dfilename_002drubout-_0028_0029'><span><code>unix-filename-rubout ()</code><a href='#index-unix_002dfilename_002drubout-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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. +</p> +</dd> +<dt id='index-delete_002dhorizontal_002dspace-_0028_0029'><span><code>delete-horizontal-space ()</code><a href='#index-delete_002dhorizontal_002dspace-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Delete all spaces and tabs around point. By default, this is unbound. +</p> +</dd> +<dt id='index-kill_002dregion-_0028_0029'><span><code>kill-region ()</code><a href='#index-kill_002dregion-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Kill the text in the current region. +By default, this command is unbound. +</p> +</dd> +<dt id='index-copy_002dregion_002das_002dkill-_0028_0029'><span><code>copy-region-as-kill ()</code><a href='#index-copy_002dregion_002das_002dkill-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Copy the text in the region to the kill buffer, so it can be yanked +right away. By default, this command is unbound. +</p> +</dd> +<dt id='index-copy_002dbackward_002dword-_0028_0029'><span><code>copy-backward-word ()</code><a href='#index-copy_002dbackward_002dword-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Copy the word before point to the kill buffer. +The word boundaries are the same as <code>backward-word</code>. +By default, this command is unbound. +</p> +</dd> +<dt id='index-copy_002dforward_002dword-_0028_0029'><span><code>copy-forward-word ()</code><a href='#index-copy_002dforward_002dword-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Copy the word following point to the kill buffer. +The word boundaries are the same as <code>forward-word</code>. +By default, this command is unbound. +</p> +</dd> +<dt id='index-yank-_0028C_002dy_0029'><span><code>yank (C-y)</code><a href='#index-yank-_0028C_002dy_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Yank the top of the kill ring into the buffer at point. +</p> +</dd> +<dt id='index-yank_002dpop-_0028M_002dy_0029'><span><code>yank-pop (M-y)</code><a href='#index-yank_002dpop-_0028M_002dy_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Rotate the kill-ring, and yank the new top. You can only do this if +the prior command is <code>yank</code> or <code>yank-pop</code>. +</p></dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Numeric-Arguments"> +<div class="header"> +<p> +Next: <a href="#Commands-For-Completion" accesskey="n" rel="next">Letting Readline Type For You</a>, Previous: <a href="#Commands-For-Killing" accesskey="p" rel="prev">Killing And Yanking</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Specifying-Numeric-Arguments"></span><h4 class="subsection">1.4.5 Specifying Numeric Arguments</h4> +<dl compact="compact"> +<dt id='index-digit_002dargument-_0028M_002d0_002c-M_002d1_002c-_2026-M_002d_002d_0029'><span><code>digit-argument (<kbd>M-0</kbd>, <kbd>M-1</kbd>, … <kbd>M--</kbd>)</code><a href='#index-digit_002dargument-_0028M_002d0_002c-M_002d1_002c-_2026-M_002d_002d_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Add this digit to the argument already accumulating, or start a new +argument. <kbd>M--</kbd> starts a negative argument. +</p> +</dd> +<dt id='index-universal_002dargument-_0028_0029'><span><code>universal-argument ()</code><a href='#index-universal_002dargument-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 <code>universal-argument</code> +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 nor 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. +</p></dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Commands-For-Completion"> +<div class="header"> +<p> +Next: <a href="#Keyboard-Macros" accesskey="n" rel="next">Keyboard Macros</a>, Previous: <a href="#Numeric-Arguments" accesskey="p" rel="prev">Specifying Numeric Arguments</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Letting-Readline-Type-For-You"></span><h4 class="subsection">1.4.6 Letting Readline Type For You</h4> + +<dl compact="compact"> +<dt id='index-complete-_0028TAB_0029'><span><code>complete (<span class="key">TAB</span>)</code><a href='#index-complete-_0028TAB_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Attempt to perform completion on the text before point. +The actual completion performed is application-specific. +The default is filename completion. +</p> +</dd> +<dt id='index-possible_002dcompletions-_0028M_002d_003f_0029'><span><code>possible-completions (M-?)</code><a href='#index-possible_002dcompletions-_0028M_002d_003f_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>List the possible completions of the text before point. +When displaying completions, Readline sets the number of columns used +for display to the value of <code>completion-display-width</code>, the value of +the environment variable <code>COLUMNS</code>, or the screen width, in that order. +</p> +</dd> +<dt id='index-insert_002dcompletions-_0028M_002d_002a_0029'><span><code>insert-completions (M-*)</code><a href='#index-insert_002dcompletions-_0028M_002d_002a_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Insert all completions of the text before point that would have +been generated by <code>possible-completions</code>. +</p> +</dd> +<dt id='index-menu_002dcomplete-_0028_0029'><span><code>menu-complete ()</code><a href='#index-menu_002dcomplete-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Similar to <code>complete</code>, but replaces the word to be completed +with a single match from the list of possible completions. +Repeated execution of <code>menu-complete</code> 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 <code>bell-style</code>) +and the original text is restored. +An argument of <var>n</var> moves <var>n</var> 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 <tt class="key">TAB</tt>, but is unbound +by default. +</p> +</dd> +<dt id='index-menu_002dcomplete_002dbackward-_0028_0029'><span><code>menu-complete-backward ()</code><a href='#index-menu_002dcomplete_002dbackward-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Identical to <code>menu-complete</code>, but moves backward through the list +of possible completions, as if <code>menu-complete</code> had been given a +negative argument. +</p> +</dd> +<dt id='index-delete_002dchar_002dor_002dlist-_0028_0029'><span><code>delete-char-or-list ()</code><a href='#index-delete_002dchar_002dor_002dlist-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Deletes the character under the cursor if not at the beginning or +end of the line (like <code>delete-char</code>). +If at the end of the line, behaves identically to +<code>possible-completions</code>. +This command is unbound by default. +</p> +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Keyboard-Macros"> +<div class="header"> +<p> +Next: <a href="#Miscellaneous-Commands" accesskey="n" rel="next">Some Miscellaneous Commands</a>, Previous: <a href="#Commands-For-Completion" accesskey="p" rel="prev">Letting Readline Type For You</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Keyboard-Macros-1"></span><h4 class="subsection">1.4.7 Keyboard Macros</h4> +<dl compact="compact"> +<dt id='index-start_002dkbd_002dmacro-_0028C_002dx-_0028_0029'><span><code>start-kbd-macro (C-x ()</code><a href='#index-start_002dkbd_002dmacro-_0028C_002dx-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Begin saving the characters typed into the current keyboard macro. +</p> +</dd> +<dt id='index-end_002dkbd_002dmacro-_0028C_002dx-_0029_0029'><span><code>end-kbd-macro (C-x ))</code><a href='#index-end_002dkbd_002dmacro-_0028C_002dx-_0029_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Stop saving the characters typed into the current keyboard macro +and save the definition. +</p> +</dd> +<dt id='index-call_002dlast_002dkbd_002dmacro-_0028C_002dx-e_0029'><span><code>call-last-kbd-macro (C-x e)</code><a href='#index-call_002dlast_002dkbd_002dmacro-_0028C_002dx-e_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Re-execute the last keyboard macro defined, by making the characters +in the macro appear as if typed at the keyboard. +</p> +</dd> +<dt id='index-print_002dlast_002dkbd_002dmacro-_0028_0029'><span><code>print-last-kbd-macro ()</code><a href='#index-print_002dlast_002dkbd_002dmacro-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Print the last keyboard macro defined in a format suitable for the +<var>inputrc</var> file. +</p> +</dd> +</dl> + +<hr> +</div> +<div class="subsection" id="Miscellaneous-Commands"> +<div class="header"> +<p> +Previous: <a href="#Keyboard-Macros" accesskey="p" rel="prev">Keyboard Macros</a>, Up: <a href="#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Some-Miscellaneous-Commands"></span><h4 class="subsection">1.4.8 Some Miscellaneous Commands</h4> +<dl compact="compact"> +<dt id='index-re_002dread_002dinit_002dfile-_0028C_002dx-C_002dr_0029'><span><code>re-read-init-file (C-x C-r)</code><a href='#index-re_002dread_002dinit_002dfile-_0028C_002dx-C_002dr_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Read in the contents of the <var>inputrc</var> file, and incorporate +any bindings or variable assignments found there. +</p> +</dd> +<dt id='index-abort-_0028C_002dg_0029'><span><code>abort (C-g)</code><a href='#index-abort-_0028C_002dg_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Abort the current editing command and +ring the terminal’s bell (subject to the setting of +<code>bell-style</code>). +</p> +</dd> +<dt id='index-do_002dlowercase_002dversion-_0028M_002dA_002c-M_002dB_002c-M_002dx_002c-_2026_0029'><span><code>do-lowercase-version (M-A, M-B, M-<var>x</var>, …)</code><a href='#index-do_002dlowercase_002dversion-_0028M_002dA_002c-M_002dB_002c-M_002dx_002c-_2026_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>If the metafied character <var>x</var> is upper case, run the command +that is bound to the corresponding metafied lower case character. +The behavior is undefined if <var>x</var> is already lower case. +</p> +</dd> +<dt id='index-prefix_002dmeta-_0028ESC_0029'><span><code>prefix-meta (<span class="key">ESC</span>)</code><a href='#index-prefix_002dmeta-_0028ESC_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Metafy the next character typed. This is for keyboards +without a meta key. Typing ‘<samp><span class="key">ESC</span> f</samp>’ is equivalent to typing +<kbd>M-f</kbd>. +</p> +</dd> +<dt id='index-undo-_0028C_002d_005f-or-C_002dx-C_002du_0029'><span><code>undo (C-_ or C-x C-u)</code><a href='#index-undo-_0028C_002d_005f-or-C_002dx-C_002du_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Incremental undo, separately remembered for each line. +</p> +</dd> +<dt id='index-revert_002dline-_0028M_002dr_0029'><span><code>revert-line (M-r)</code><a href='#index-revert_002dline-_0028M_002dr_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Undo all changes made to this line. This is like executing the <code>undo</code> +command enough times to get back to the beginning. +</p> +</dd> +<dt id='index-tilde_002dexpand-_0028M_002d_007e_0029'><span><code>tilde-expand (M-~)</code><a href='#index-tilde_002dexpand-_0028M_002d_007e_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Perform tilde expansion on the current word. +</p> +</dd> +<dt id='index-set_002dmark-_0028C_002d_0040_0029'><span><code>set-mark (C-@)</code><a href='#index-set_002dmark-_0028C_002d_0040_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Set the mark to the point. If a +numeric argument is supplied, the mark is set to that position. +</p> +</dd> +<dt id='index-exchange_002dpoint_002dand_002dmark-_0028C_002dx-C_002dx_0029'><span><code>exchange-point-and-mark (C-x C-x)</code><a href='#index-exchange_002dpoint_002dand_002dmark-_0028C_002dx-C_002dx_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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. +</p> +</dd> +<dt id='index-character_002dsearch-_0028C_002d_005d_0029'><span><code>character-search (C-])</code><a href='#index-character_002dsearch-_0028C_002d_005d_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>A character is read and point is moved to the next occurrence of that +character. A negative argument searches for previous occurrences. +</p> +</dd> +<dt id='index-character_002dsearch_002dbackward-_0028M_002dC_002d_005d_0029'><span><code>character-search-backward (M-C-])</code><a href='#index-character_002dsearch_002dbackward-_0028M_002dC_002d_005d_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>A character is read and point is moved to the previous occurrence +of that character. A negative argument searches for subsequent +occurrences. +</p> +</dd> +<dt id='index-skip_002dcsi_002dsequence-_0028_0029'><span><code>skip-csi-sequence ()</code><a href='#index-skip_002dcsi_002dsequence-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Read enough characters to consume a multi-key sequence such as those +defined for keys like Home and End. Such sequences begin with a +Control Sequence Indicator (CSI), usually ESC-[. If this sequence is +bound to "\e[", keys producing such sequences will have no effect +unless explicitly bound to a Readline command, instead of inserting +stray characters into the editing buffer. This is unbound by default, +but usually bound to ESC-[. +</p> +</dd> +<dt id='index-insert_002dcomment-_0028M_002d_0023_0029'><span><code>insert-comment (M-#)</code><a href='#index-insert_002dcomment-_0028M_002d_0023_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>Without a numeric argument, the value of the <code>comment-begin</code> +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 <code>comment-begin</code>, the value is inserted, otherwise +the characters in <code>comment-begin</code> are deleted from the beginning of +the line. +In either case, the line is accepted as if a newline had been typed. +</p> +</dd> +<dt id='index-dump_002dfunctions-_0028_0029'><span><code>dump-functions ()</code><a href='#index-dump_002dfunctions-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 <var>inputrc</var> file. This command is unbound by default. +</p> +</dd> +<dt id='index-dump_002dvariables-_0028_0029'><span><code>dump-variables ()</code><a href='#index-dump_002dvariables-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 <var>inputrc</var> file. This command is unbound by default. +</p> +</dd> +<dt id='index-dump_002dmacros-_0028_0029'><span><code>dump-macros ()</code><a href='#index-dump_002dmacros-_0028_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>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 <var>inputrc</var> file. This command is unbound by default. +</p> + +</dd> +<dt id='index-emacs_002dediting_002dmode-_0028C_002de_0029'><span><code>emacs-editing-mode (C-e)</code><a href='#index-emacs_002dediting_002dmode-_0028C_002de_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>When in <code>vi</code> command mode, this causes a switch to <code>emacs</code> +editing mode. +</p> +</dd> +<dt id='index-vi_002dediting_002dmode-_0028M_002dC_002dj_0029'><span><code>vi-editing-mode (M-C-j)</code><a href='#index-vi_002dediting_002dmode-_0028M_002dC_002dj_0029' class='copiable-anchor'> ¶</a></span></dt> +<dd><p>When in <code>emacs</code> editing mode, this causes a switch to <code>vi</code> +editing mode. +</p> + +</dd> +</dl> + +<hr> +</div> +</div> +<div class="section" id="Readline-vi-Mode"> +<div class="header"> +<p> +Previous: <a href="#Bindable-Readline-Commands" accesskey="p" rel="prev">Bindable Readline Commands</a>, Up: <a href="#Command-Line-Editing" accesskey="u" rel="up">Command Line Editing</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="Readline-vi-Mode-1"></span><h3 class="section">1.5 Readline vi Mode</h3> + +<p>While the Readline library does not have a full set of <code>vi</code> +editing functions, it does contain enough to allow simple editing +of the line. The Readline <code>vi</code> mode behaves as specified in +the <small>POSIX</small> standard. +</p> +<p>In order to switch interactively between <code>emacs</code> and <code>vi</code> +editing modes, use the command <kbd>M-C-j</kbd> (bound to emacs-editing-mode +when in <code>vi</code> mode and to vi-editing-mode in <code>emacs</code> mode). +The Readline default is <code>emacs</code> mode. +</p> +<p>When you enter a line in <code>vi</code> mode, you are already placed in +‘insertion’ mode, as if you had typed an ‘<samp>i</samp>’. Pressing <tt class="key">ESC</tt> +switches you into ‘command’ mode, where you can edit the text of the +line with the standard <code>vi</code> movement keys, move to previous +history lines with ‘<samp>k</samp>’ and subsequent lines with ‘<samp>j</samp>’, and +so forth. +</p> + +<hr> +</div> +</div> +<div class="appendix" id="GNU-Free-Documentation-License"> +<div class="header"> +<p> +Previous: <a href="#Command-Line-Editing" accesskey="p" rel="prev">Command Line Editing</a>, Up: <a href="#Top" accesskey="u" rel="up">GNU Readline Library</a> [<a href="#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p> +</div> +<span id="GNU-Free-Documentation-License-1"></span><h2 class="appendix">Appendix A GNU Free Documentation License</h2> + +<div align="center">Version 1.3, 3 November 2008 +</div> + +<div class="display"> +<pre class="display">Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. +<a href="http://fsf.org/">http://fsf.org/</a> + +Everyone is permitted to copy and distribute verbatim copies +of this license document, but changing it is not allowed. +</pre></div> + +<ol start="0"> +<li> PREAMBLE + +<p>The purpose of this License is to make a manual, textbook, or other +functional and useful document <em>free</em> 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. +</p> +<p>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. +</p> +<p>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. +</p> +</li><li> APPLICABILITY AND DEFINITIONS + +<p>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. +</p> +<p>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. +</p> +<p>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.) 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In addition, you must do these things in the Modified Version: +</p> +<ol type="A" start="1"> +<li> 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. + +</li><li> 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. + +</li><li> State on the Title page the name of the publisher of the +Modified Version, as the publisher. + +</li><li> Preserve all the copyright notices of the Document. + +</li><li> Add an appropriate copyright notice for your modifications +adjacent to the other copyright notices. + +</li><li> 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. + +</li><li> Preserve in that license notice the full lists of Invariant Sections +and required Cover Texts given in the Document’s license notice. + +</li><li> Include an unaltered copy of this License. + +</li><li> 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. + +</li><li> 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. + +</li><li> 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. + +</li><li> 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. + +</li><li> Delete any section Entitled “Endorsements”. 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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. +</p> +<p>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. +</p> +<p>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. +</p> +<p>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. +</p> +</li><li> COMBINING DOCUMENTS + +<p>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. +</p> +<p>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. +</p> +<p>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.” +</p> +</li><li> COLLECTIONS OF DOCUMENTS + +<p>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. +</p> +<p>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. +</p> +</li><li> AGGREGATION WITH INDEPENDENT WORKS + +<p>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 in an aggregate, this License does not +apply to the other works in the aggregate which are not themselves +derivative works of the Document. +</p> +<p>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. +</p> +</li><li> TRANSLATION + +<p>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. +</p> +<p>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. +</p> +</li><li> TERMINATION + +<p>You may not copy, modify, sublicense, or distribute the Document +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense, or distribute it is void, and +will automatically terminate your rights under this License. +</p> +<p>However, if you cease all violation of this License, then your license +from a particular copyright holder is reinstated (a) provisionally, +unless and until the copyright holder explicitly and finally +terminates your license, and (b) permanently, if the copyright holder +fails to notify you of the violation by some reasonable means prior to +60 days after the cessation. +</p> +<p>Moreover, your license from a particular copyright holder is +reinstated permanently if the copyright holder notifies you of the +violation by some reasonable means, this is the first time you have +received notice of violation of this License (for any work) from that +copyright holder, and you cure the violation prior to 30 days after +your receipt of the notice. +</p> +<p>Termination of your rights under this section does not terminate the +licenses of parties who have received copies or rights from you under +this License. If your rights have been terminated and not permanently +reinstated, receipt of a copy of some or all of the same material does +not give you any rights to use it. +</p> +</li><li> FUTURE REVISIONS OF THIS LICENSE + +<p>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 +<a href="http://www.gnu.org/copyleft/">http://www.gnu.org/copyleft/</a>. +</p> +<p>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. If the Document +specifies that a proxy can decide which future versions of this +License can be used, that proxy’s public statement of acceptance of a +version permanently authorizes you to choose that version for the +Document. +</p> +</li><li> RELICENSING + +<p>“Massive Multiauthor Collaboration Site” (or “MMC Site”) means any +World Wide Web server that publishes copyrightable works and also +provides prominent facilities for anybody to edit those works. A +public wiki that anybody can edit is an example of such a server. A +“Massive Multiauthor Collaboration” (or “MMC”) contained in the +site means any set of copyrightable works thus published on the MMC +site. +</p> +<p>“CC-BY-SA” means the Creative Commons Attribution-Share Alike 3.0 +license published by Creative Commons Corporation, a not-for-profit +corporation with a principal place of business in San Francisco, +California, as well as future copyleft versions of that license +published by that same organization. +</p> +<p>“Incorporate” means to publish or republish a Document, in whole or +in part, as part of another Document. +</p> +<p>An MMC is “eligible for relicensing” if it is licensed under this +License, and if all works that were first published under this License +somewhere other than this MMC, and subsequently incorporated in whole +or in part into the MMC, (1) had no cover texts or invariant sections, +and (2) were thus incorporated prior to November 1, 2008. +</p> +<p>The operator of an MMC Site may republish an MMC contained in the site +under CC-BY-SA on the same site at any time before August 1, 2009, +provided the MMC is eligible for relicensing. +</p> +</li></ol> + +<span id="ADDENDUM_003a-How-to-use-this-License-for-your-documents"></span><h3 class="heading">ADDENDUM: How to use this License for your documents</h3> + +<p>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: +</p> +<div class="example"> +<pre class="example"> Copyright (C) <var>year</var> <var>your name</var>. + Permission is granted to copy, distribute and/or modify this document + under the terms of the GNU Free Documentation License, Version 1.3 + 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''. +</pre></div> + +<p>If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, +replace the “with…Texts.” line with this: +</p> +<div class="example"> +<pre class="example"> with the Invariant Sections being <var>list their titles</var>, with + the Front-Cover Texts being <var>list</var>, and with the Back-Cover Texts + being <var>list</var>. +</pre></div> + +<p>If you have Invariant Sections without Cover Texts, or some other +combination of the three, merge those two alternatives to suit the +situation. +</p> +<p>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. +</p> + + +</div> +</div> + + + +</body> +</html> |