90 lines
4.2 KiB
HTML
90 lines
4.2 KiB
HTML
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<html lang="en">
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<head>
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<title>Searching - Debugging with GDB</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Debugging with GDB">
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<meta name="generator" content="makeinfo 4.13">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Readline-Interaction.html#Readline-Interaction" title="Readline Interaction">
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<link rel="prev" href="Readline-Arguments.html#Readline-Arguments" title="Readline Arguments">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being ``Free Software'' and ``Free Software Needs
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Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,''
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: ``You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom.''
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</head>
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<body>
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<div class="node">
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<a name="Searching"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="Readline-Arguments.html#Readline-Arguments">Readline Arguments</a>,
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Up: <a rel="up" accesskey="u" href="Readline-Interaction.html#Readline-Interaction">Readline Interaction</a>
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<hr>
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</div>
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<h4 class="subsection">32.2.5 Searching for Commands in the History</h4>
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<p>Readline provides commands for searching through the command history
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for lines containing a specified string.
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There are two search modes: <dfn>incremental</dfn> and <dfn>non-incremental</dfn>.
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<p>Incremental searches begin before the user has finished typing the
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search string.
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As each character of the search string is typed, Readline displays
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the next entry from the history matching the string typed so far.
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An incremental search requires only as many characters as needed to
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find the desired history entry.
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To search backward in the history for a particular string, type
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<kbd>C-r</kbd>. Typing <kbd>C-s</kbd> searches forward through the history.
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The characters present in the value of the <code>isearch-terminators</code> variable
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are used to terminate an incremental search.
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If that variable has not been assigned a value, the <ESC> and
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<kbd>C-J</kbd> characters will terminate an incremental search.
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<kbd>C-g</kbd> will abort an incremental search and restore the original line.
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When the search is terminated, the history entry containing the
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search string becomes the current line.
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<p>To find other matching entries in the history list, type <kbd>C-r</kbd> or
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<kbd>C-s</kbd> as appropriate.
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This will search backward or forward in the history for the next
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entry matching the search string typed so far.
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Any other key sequence bound to a Readline command will terminate
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the search and execute that command.
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For instance, a <RET> will terminate the search and accept
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the line, thereby executing the command from the history list.
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A movement command will terminate the search, make the last line found
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the current line, and begin editing.
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<p>Readline remembers the last incremental search string. If two
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<kbd>C-r</kbd>s are typed without any intervening characters defining a new
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search string, any remembered search string is used.
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<p>Non-incremental searches read the entire search string before starting
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to search for matching history lines. The search string may be
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typed by the user or be part of the contents of the current line.
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</body></html>
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