1985 lines
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1985 lines
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<TITLE>Debugging with GDB: Command Line Editing</TITLE>
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<H1> 27. Command Line Editing </H1>
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<!--docid::SEC657::-->
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<P>
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This chapter describes the basic features of the GNU
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command line editing interface.
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</P><P>
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<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC658">27.1 Introduction to Line Editing</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Notation used in this text.</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC659">27.2 Readline Interaction</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">The minimum set of commands for editing a line.</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC665">27.3 Readline Init File</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Customizing Readline from a user's view.</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC669">27.4 Bindable Readline Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">A description of most of the Readline commands
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available for binding</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC678">27.5 Readline vi Mode</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">A short description of how to make Readline
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behave like the vi editor.</TD></TR>
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</TABLE></BLOCKQUOTE>
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<P>
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<A NAME="Introduction and Notation"></A>
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<HR SIZE="6">
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<A NAME="SEC658"></A>
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<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC657"> < </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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</TR></TABLE>
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<H2> 27.1 Introduction to Line Editing </H2>
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<!--docid::SEC658::-->
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<P>
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The following paragraphs describe the notation used to represent
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keystrokes.
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</P><P>
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The text <KBD>C-k</KBD> is read as `Control-K' and describes the character
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produced when the <KBD>k</KBD> key is pressed while the Control key
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is depressed.
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</P><P>
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The text <KBD>M-k</KBD> is read as `Meta-K' and describes the character
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produced when the Meta key (if you have one) is depressed, and the <KBD>k</KBD>
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key is pressed.
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The Meta key is labeled <KBD>ALT</KBD> on many keyboards.
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On keyboards with two keys labeled <KBD>ALT</KBD> (usually to either side of
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the space bar), the <KBD>ALT</KBD> on the left side is generally set to
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work as a Meta key.
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The <KBD>ALT</KBD> key on the right may also be configured to work as a
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Meta key or may be configured as some other modifier, such as a
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Compose key for typing accented characters.
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</P><P>
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If you do not have a Meta or <KBD>ALT</KBD> key, or another key working as
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a Meta key, the identical keystroke can be generated by typing <KBD>ESC</KBD>
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<EM>first</EM>, and then typing <KBD>k</KBD>.
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Either process is known as <EM>metafying</EM> the <KBD>k</KBD> key.
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</P><P>
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The text <KBD>M-C-k</KBD> is read as `Meta-Control-k' and describes the
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character produced by <EM>metafying</EM> <KBD>C-k</KBD>.
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</P><P>
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In addition, several keys have their own names. Specifically,
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<KBD>DEL</KBD>, <KBD>ESC</KBD>, <KBD>LFD</KBD>, <KBD>SPC</KBD>, <KBD>RET</KBD>, and <KBD>TAB</KBD> all
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stand for themselves when seen in this text, or in an init file
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(see section <A HREF="gdb_28.html#SEC665">27.3 Readline Init File</A>).
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If your keyboard lacks a <KBD>LFD</KBD> key, typing <KBD>C-j</KBD> will
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produce the desired character.
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The <KBD>RET</KBD> key may be labeled <KBD>Return</KBD> or <KBD>Enter</KBD> on
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some keyboards.
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</P><P>
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<A NAME="Readline Interaction"></A>
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<HR SIZE="6">
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<A NAME="SEC659"></A>
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<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC658"> < </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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</TR></TABLE>
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<H2> 27.2 Readline Interaction </H2>
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<!--docid::SEC659::-->
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<P>
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Often during an interactive session you type in a long line of text,
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only to notice that the first word on the line is misspelled. The
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Readline library gives you a set of commands for manipulating the text
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as you type it in, allowing you to just fix your typo, and not forcing
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you to retype the majority of the line. Using these editing commands,
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you move the cursor to the place that needs correction, and delete or
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insert the text of the corrections. Then, when you are satisfied with
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the line, you simply press <KBD>RET</KBD>. You do not have to be at the
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end of the line to press <KBD>RET</KBD>; the entire line is accepted
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regardless of the location of the cursor within the line.
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</P><P>
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<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC660">27.2.1 Readline Bare Essentials</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">The least you need to know about Readline.</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC661">27.2.2 Readline Movement Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Moving about the input line.</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC662">27.2.3 Readline Killing Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">How to delete text, and how to get it back!</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC663">27.2.4 Readline Arguments</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Giving numeric arguments to commands.</TD></TR>
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<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC664">27.2.5 Searching for Commands in the History</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Searching through previous lines.</TD></TR>
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</TABLE></BLOCKQUOTE>
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<P>
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<A NAME="Readline Bare Essentials"></A>
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<HR SIZE="6">
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<A NAME="SEC660"></A>
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<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
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<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC659"> < </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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</TR></TABLE>
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<H3> 27.2.1 Readline Bare Essentials </H3>
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<!--docid::SEC660::-->
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<P>
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In order to enter characters into the line, simply type them. The typed
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character appears where the cursor was, and then the cursor moves one
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space to the right. If you mistype a character, you can use your
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erase character to back up and delete the mistyped character.
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</P><P>
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Sometimes you may mistype a character, and
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not notice the error until you have typed several other characters. In
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that case, you can type <KBD>C-b</KBD> to move the cursor to the left, and then
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correct your mistake. Afterwards, you can move the cursor to the right
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with <KBD>C-f</KBD>.
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</P><P>
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When you add text in the middle of a line, you will notice that characters
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to the right of the cursor are `pushed over' to make room for the text
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that you have inserted. Likewise, when you delete text behind the cursor,
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characters to the right of the cursor are `pulled back' to fill in the
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blank space created by the removal of the text. A list of the bare
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essentials for editing the text of an input line follows.
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</P><P>
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<DL COMPACT>
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<DT><KBD>C-b</KBD>
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<DD>Move back one character.
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<DT><KBD>C-f</KBD>
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<DD>Move forward one character.
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<DT><KBD>DEL</KBD> or <KBD>Backspace</KBD>
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<DD>Delete the character to the left of the cursor.
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<DT><KBD>C-d</KBD>
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<DD>Delete the character underneath the cursor.
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<DT>Printing characters
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<DD>Insert the character into the line at the cursor.
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<DT><KBD>C-_</KBD> or <KBD>C-x C-u</KBD>
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<DD>Undo the last editing command. You can undo all the way back to an
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empty line.
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</DL>
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<P>
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(Depending on your configuration, the <KBD>Backspace</KBD> key be set to
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delete the character to the left of the cursor and the <KBD>DEL</KBD> key set
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to delete the character underneath the cursor, like <KBD>C-d</KBD>, rather
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than the character to the left of the cursor.)
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</P><P>
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<A NAME="Readline Movement Commands"></A>
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<HR SIZE="6">
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<A NAME="SEC661"></A>
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<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
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<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC660"> < </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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</TR></TABLE>
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<H3> 27.2.2 Readline Movement Commands </H3>
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<!--docid::SEC661::-->
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<P>
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The above table describes the most basic keystrokes that you need
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in order to do editing of the input line. For your convenience, many
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other commands have been added in addition to <KBD>C-b</KBD>, <KBD>C-f</KBD>,
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<KBD>C-d</KBD>, and <KBD>DEL</KBD>. Here are some commands for moving more rapidly
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about the line.
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</P><P>
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<DL COMPACT>
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<DT><KBD>C-a</KBD>
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<DD>Move to the start of the line.
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<DT><KBD>C-e</KBD>
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<DD>Move to the end of the line.
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<DT><KBD>M-f</KBD>
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<DD>Move forward a word, where a word is composed of letters and digits.
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<DT><KBD>M-b</KBD>
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<DD>Move backward a word.
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<DT><KBD>C-l</KBD>
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<DD>Clear the screen, reprinting the current line at the top.
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</DL>
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<P>
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Notice how <KBD>C-f</KBD> moves forward a character, while <KBD>M-f</KBD> moves
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forward a word. It is a loose convention that control keystrokes
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operate on characters while meta keystrokes operate on words.
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</P><P>
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<A NAME="Readline Killing Commands"></A>
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<HR SIZE="6">
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<A NAME="SEC662"></A>
|
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<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
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<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC661"> < </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC663"> > </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC663"> << </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC659"> Up </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> >> </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
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</TR></TABLE>
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<H3> 27.2.3 Readline Killing Commands </H3>
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<!--docid::SEC662::-->
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<P>
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<A NAME="IDX1333"></A>
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<A NAME="IDX1334"></A>
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</P><P>
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<EM>Killing</EM> text means to delete the text from the line, but to save
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it away for later use, usually by <EM>yanking</EM> (re-inserting)
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it back into the line.
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(`Cut' and `paste' are more recent jargon for `kill' and `yank'.)
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</P><P>
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If the description for a command says that it `kills' text, then you can
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be sure that you can get the text back in a different (or the same)
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place later.
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</P><P>
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When you use a kill command, the text is saved in a <EM>kill-ring</EM>.
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Any number of consecutive kills save all of the killed text together, so
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that when you yank it back, you get it all. The kill
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ring is not line specific; the text that you killed on a previously
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typed line is available to be yanked back later, when you are typing
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another line.
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<A NAME="IDX1335"></A>
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</P><P>
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|
|
Here is the list of commands for killing text.
|
|
</P><P>
|
|
|
|
<DL COMPACT>
|
|
<DT><KBD>C-k</KBD>
|
|
<DD>Kill the text from the current cursor position to the end of the line.
|
|
<P>
|
|
|
|
<DT><KBD>M-d</KBD>
|
|
<DD>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>
|
|
|
|
<DT><KBD>M-<KBD>DEL</KBD></KBD>
|
|
<DD>Kill from the cursor 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>
|
|
|
|
<DT><KBD>C-w</KBD>
|
|
<DD>Kill from the cursor to the previous whitespace. This is different than
|
|
<KBD>M-<KBD>DEL</KBD></KBD> because the word boundaries differ.
|
|
<P>
|
|
|
|
</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><P>
|
|
|
|
<DL COMPACT>
|
|
<DT><KBD>C-y</KBD>
|
|
<DD>Yank the most recently killed text back into the buffer at the cursor.
|
|
<P>
|
|
|
|
<DT><KBD>M-y</KBD>
|
|
<DD>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>.
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Readline Arguments"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC663"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC662"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC664"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC664"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC659"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.2.4 Readline Arguments </H3>
|
|
<!--docid::SEC663::-->
|
|
<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><P>
|
|
|
|
<A NAME="Searching"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC664"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC663"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC659"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.2.5 Searching for Commands in the History </H3>
|
|
<!--docid::SEC664::-->
|
|
<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 <KBD>ESC</KBD> 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 <KBD>RET</KBD> 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><P>
|
|
|
|
<A NAME="Readline Init File"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC665"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC664"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC666"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC657"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H2> 27.3 Readline Init File </H2>
|
|
<!--docid::SEC665::-->
|
|
<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 his 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 <TT>`~/.inputrc'</TT>.
|
|
</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><P>
|
|
|
|
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC666">27.3.1 Readline Init File Syntax</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Syntax for the commands in the inputrc file.</TD></TR>
|
|
</TABLE>
|
|
|
|
<br>
|
|
<TABLE BORDER=0 CELLSPACING=0>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC667">27.3.2 Conditional Init Constructs</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Conditional key bindings in the inputrc file.</TD></TR>
|
|
</TABLE>
|
|
|
|
<br>
|
|
<TABLE BORDER=0 CELLSPACING=0>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC668">27.3.3 Sample Init File</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">An example inputrc file.</TD></TR>
|
|
</TABLE></BLOCKQUOTE>
|
|
<P>
|
|
|
|
<A NAME="Readline Init File Syntax"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC666"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC667"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.3.1 Readline Init File Syntax </H3>
|
|
<!--docid::SEC666::-->
|
|
<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 section <A HREF="gdb_28.html#SEC667">27.3.2 Conditional Init Constructs</A>). Other lines
|
|
denote variable settings and key bindings.
|
|
</P><P>
|
|
|
|
<DL COMPACT>
|
|
<DT>Variable Settings
|
|
<DD>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>
|
|
|
|
<TABLE><tr><td> </td><td class=example><pre>set <VAR>variable</VAR> <VAR>value</VAR>
|
|
</pre></td></tr></table></P><P>
|
|
|
|
Here, for example, is how to
|
|
change from the default Emacs-like key binding to use
|
|
<CODE>vi</CODE> line editing commands:
|
|
</P><P>
|
|
|
|
<TABLE><tr><td> </td><td class=example><pre>set editing-mode vi
|
|
</pre></td></tr></table></P><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><P>
|
|
|
|
<A NAME="IDX1336"></A>
|
|
<DL COMPACT>
|
|
|
|
<DT><CODE>bell-style</CODE>
|
|
<DD><A NAME="IDX1337"></A>
|
|
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>
|
|
|
|
<DT><CODE>bind-tty-special-chars</CODE>
|
|
<DD><A NAME="IDX1338"></A>
|
|
If set to <SAMP>`on'</SAMP>, Readline attempts to bind the control characters
|
|
treated specially by the kernel's terminal driver to their Readline
|
|
equivalents.
|
|
<P>
|
|
|
|
<DT><CODE>comment-begin</CODE>
|
|
<DD><A NAME="IDX1339"></A>
|
|
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>
|
|
|
|
<DT><CODE>completion-ignore-case</CODE>
|
|
<DD>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>
|
|
|
|
<DT><CODE>completion-query-items</CODE>
|
|
<DD><A NAME="IDX1340"></A>
|
|
The number of possible completions that determines when the user is
|
|
asked whether the list of possibilities should be displayed.
|
|
If the number of possible completions is greater than this value,
|
|
Readline will ask the user whether or not he wishes to view
|
|
them; otherwise, they are simply listed.
|
|
This variable must be set to an integer value greater than or equal to 0.
|
|
A negative value means Readline should never ask.
|
|
The default limit is <CODE>100</CODE>.
|
|
<P>
|
|
|
|
<DT><CODE>convert-meta</CODE>
|
|
<DD><A NAME="IDX1341"></A>
|
|
If set to <SAMP>`on'</SAMP>, Readline will convert characters with the
|
|
eighth bit set to an ASCII key sequence by stripping the eighth
|
|
bit and prefixing an <KBD>ESC</KBD> character, converting them to a
|
|
meta-prefixed key sequence. The default value is <SAMP>`on'</SAMP>.
|
|
<P>
|
|
|
|
<DT><CODE>disable-completion</CODE>
|
|
<DD><A NAME="IDX1342"></A>
|
|
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>
|
|
|
|
<DT><CODE>editing-mode</CODE>
|
|
<DD><A NAME="IDX1343"></A>
|
|
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>
|
|
|
|
<DT><CODE>enable-keypad</CODE>
|
|
<DD><A NAME="IDX1344"></A>
|
|
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>
|
|
|
|
<DT><CODE>expand-tilde</CODE>
|
|
<DD><A NAME="IDX1345"></A>
|
|
If set to <SAMP>`on'</SAMP>, tilde expansion is performed when Readline
|
|
attempts word completion. The default is <SAMP>`off'</SAMP>.
|
|
<P>
|
|
|
|
<DT><CODE>history-preserve-point</CODE>
|
|
<DD><A NAME="IDX1346"></A>
|
|
If set to <SAMP>`on'</SAMP>, the history code attempts to place point 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>
|
|
|
|
<DT><CODE>horizontal-scroll-mode</CODE>
|
|
<DD><A NAME="IDX1347"></A>
|
|
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. By default,
|
|
this variable is set to <SAMP>`off'</SAMP>.
|
|
<P>
|
|
|
|
<DT><CODE>input-meta</CODE>
|
|
<DD><A NAME="IDX1348"></A>
|
|
<A NAME="IDX1349"></A>
|
|
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>. The name <CODE>meta-flag</CODE> is a
|
|
synonym for this variable.
|
|
<P>
|
|
|
|
<DT><CODE>isearch-terminators</CODE>
|
|
<DD><A NAME="IDX1350"></A>
|
|
The string of characters that should terminate an incremental search without
|
|
subsequently executing the character as a command (see section <A HREF="gdb_28.html#SEC664">27.2.5 Searching for Commands in the History</A>).
|
|
If this variable has not been given a value, the characters <KBD>ESC</KBD> and
|
|
<KBD>C-J</KBD> will terminate an incremental search.
|
|
<P>
|
|
|
|
<DT><CODE>keymap</CODE>
|
|
<DD><A NAME="IDX1351"></A>
|
|
Sets Readline's idea of the current keymap for key binding commands.
|
|
Acceptable <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>emacs</CODE> is
|
|
equivalent to <CODE>emacs-standard</CODE>. The default value is <CODE>emacs</CODE>.
|
|
The value of the <CODE>editing-mode</CODE> variable also affects the
|
|
default keymap.
|
|
<P>
|
|
|
|
<DT><CODE>mark-directories</CODE>
|
|
<DD>If set to <SAMP>`on'</SAMP>, completed directory names have a slash
|
|
appended. The default is <SAMP>`on'</SAMP>.
|
|
<P>
|
|
|
|
<DT><CODE>mark-modified-lines</CODE>
|
|
<DD><A NAME="IDX1352"></A>
|
|
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>
|
|
|
|
<DT><CODE>mark-symlinked-directories</CODE>
|
|
<DD><A NAME="IDX1353"></A>
|
|
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>
|
|
|
|
<DT><CODE>match-hidden-files</CODE>
|
|
<DD><A NAME="IDX1354"></A>
|
|
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, unless the leading <SAMP>`.'</SAMP> is
|
|
supplied by the user in the filename to be completed.
|
|
This variable is <SAMP>`on'</SAMP> by default.
|
|
<P>
|
|
|
|
<DT><CODE>output-meta</CODE>
|
|
<DD><A NAME="IDX1355"></A>
|
|
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>.
|
|
<P>
|
|
|
|
<DT><CODE>page-completions</CODE>
|
|
<DD><A NAME="IDX1356"></A>
|
|
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>
|
|
|
|
<DT><CODE>print-completions-horizontally</CODE>
|
|
<DD>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>
|
|
|
|
<DT><CODE>show-all-if-ambiguous</CODE>
|
|
<DD><A NAME="IDX1357"></A>
|
|
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>
|
|
|
|
<DT><CODE>show-all-if-unmodified</CODE>
|
|
<DD><A NAME="IDX1358"></A>
|
|
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>
|
|
|
|
<DT><CODE>visible-stats</CODE>
|
|
<DD><A NAME="IDX1359"></A>
|
|
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>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<DT>Key Bindings
|
|
<DD>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>
|
|
|
|
Once you know the name of the command, simply place on a line
|
|
in the init file the name of the key
|
|
you wish to bind the command to, a colon, and then the name of the
|
|
command. The name of the key
|
|
can be expressed in different ways, depending on what you find most
|
|
comfortable.
|
|
</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><P>
|
|
|
|
<DL COMPACT>
|
|
<DT><VAR>keyname</VAR>: <VAR>function-name</VAR> or <VAR>macro</VAR>
|
|
<DD><VAR>keyname</VAR> is the name of a key spelled out in English. For example:
|
|
<TABLE><tr><td> </td><td class=example><pre>Control-u: universal-argument
|
|
Meta-Rubout: backward-kill-word
|
|
Control-o: "> output"
|
|
</pre></td></tr></table><P>
|
|
|
|
In the above example, <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><P>
|
|
|
|
<DT>"<VAR>keyseq</VAR>": <VAR>function-name</VAR> or <VAR>macro</VAR>
|
|
<DD><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 GNU Emacs style key
|
|
escapes can be used, as in the following example, but the
|
|
special character names are not recognized.
|
|
<P>
|
|
|
|
<TABLE><tr><td> </td><td class=example><pre>"\C-u": universal-argument
|
|
"\C-x\C-r": re-read-init-file
|
|
"\e[11~": "Function Key 1"
|
|
</pre></td></tr></table></P><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>`<KBD>ESC</KBD> <KBD>[</KBD> <KBD>1</KBD> <KBD>1</KBD> <KBD>~</KBD>'</SAMP> is bound to insert
|
|
the text <SAMP>`Function Key 1'</SAMP>.
|
|
</P><P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
The following GNU Emacs style escape sequences are available when
|
|
specifying key sequences:
|
|
</P><P>
|
|
|
|
<DL COMPACT>
|
|
<DT><CODE><KBD>\C-</KBD></CODE>
|
|
<DD>control prefix
|
|
<DT><CODE><KBD>\M-</KBD></CODE>
|
|
<DD>meta prefix
|
|
<DT><CODE><KBD>\e</KBD></CODE>
|
|
<DD>an escape character
|
|
<DT><CODE><KBD>\\</KBD></CODE>
|
|
<DD>backslash
|
|
<DT><CODE><KBD>\"</KBD></CODE>
|
|
<DD><KBD>"</KBD>, a double quotation mark
|
|
<DT><CODE><KBD>\'</KBD></CODE>
|
|
<DD><KBD>'</KBD>, a single quote or apostrophe
|
|
</DL>
|
|
<P>
|
|
|
|
In addition to the GNU Emacs style escape sequences, a second
|
|
set of backslash escapes is available:
|
|
</P><P>
|
|
|
|
<DL COMPACT>
|
|
<DT><CODE>\a</CODE>
|
|
<DD>alert (bell)
|
|
<DT><CODE>\b</CODE>
|
|
<DD>backspace
|
|
<DT><CODE>\d</CODE>
|
|
<DD>delete
|
|
<DT><CODE>\f</CODE>
|
|
<DD>form feed
|
|
<DT><CODE>\n</CODE>
|
|
<DD>newline
|
|
<DT><CODE>\r</CODE>
|
|
<DD>carriage return
|
|
<DT><CODE>\t</CODE>
|
|
<DD>horizontal tab
|
|
<DT><CODE>\v</CODE>
|
|
<DD>vertical tab
|
|
<DT><CODE>\<VAR>nnn</VAR></CODE>
|
|
<DD>the eight-bit character whose value is the octal value <VAR>nnn</VAR>
|
|
(one to three digits)
|
|
<DT><CODE>\x<VAR>HH</VAR></CODE>
|
|
<DD>the eight-bit character whose value is the hexadecimal value <VAR>HH</VAR>
|
|
(one or two hex digits)
|
|
</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:
|
|
<TABLE><tr><td> </td><td class=example><pre>"\C-x\\": "\\"
|
|
</pre></td></tr></table></P><P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Conditional Init Constructs"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC667"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC666"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC668"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC668"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.3.2 Conditional Init Constructs </H3>
|
|
<!--docid::SEC667::-->
|
|
<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><P>
|
|
|
|
<DL COMPACT>
|
|
<DT><CODE>$if</CODE>
|
|
<DD>The <CODE>$if</CODE> construct allows bindings to be made based on the
|
|
editing mode, the terminal being used, or the application using
|
|
Readline. The text of the test extends to the end of the line;
|
|
no characters are required to isolate it.
|
|
<P>
|
|
|
|
<DL COMPACT>
|
|
<DT><CODE>mode</CODE>
|
|
<DD>The <CODE>mode=</CODE> form of the <CODE>$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>
|
|
|
|
<DT><CODE>term</CODE>
|
|
<DD>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>
|
|
|
|
<DT><CODE>application</CODE>
|
|
<DD>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:
|
|
<TABLE><tr><td> </td><td class=example><pre>$if Bash
|
|
# Quote the current or previous word
|
|
"\C-xq": "\eb\"\ef\""
|
|
$endif
|
|
</pre></td></tr></table></DL>
|
|
<P>
|
|
|
|
<DT><CODE>$endif</CODE>
|
|
<DD>This command, as seen in the previous example, terminates an
|
|
<CODE>$if</CODE> command.
|
|
<P>
|
|
|
|
<DT><CODE>$else</CODE>
|
|
<DD>Commands in this branch of the <CODE>$if</CODE> directive are executed if
|
|
the test fails.
|
|
<P>
|
|
|
|
<DT><CODE>$include</CODE>
|
|
<DD>This directive takes a single filename as an argument and reads commands
|
|
and bindings from that file.
|
|
For example, the following directive reads from <TT>`/etc/inputrc'</TT>:
|
|
<TABLE><tr><td> </td><td class=example><pre>$include /etc/inputrc
|
|
</pre></td></tr></table></DL>
|
|
<P>
|
|
|
|
<A NAME="Sample Init File"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC668"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC667"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC665"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.3.3 Sample Init File </H3>
|
|
<!--docid::SEC668::-->
|
|
<P>
|
|
|
|
Here is an example of an <VAR>inputrc</VAR> file. This illustrates key
|
|
binding, variable assignment, and conditional syntax.
|
|
</P><P>
|
|
|
|
<TABLE><tr><td> </td><td class=example><pre># This file controls the behaviour of line input editing for
|
|
# programs that use the GNU Readline library. Existing
|
|
# programs include FTP, Bash, and GDB.
|
|
#
|
|
# You can re-read the inputrc file with C-x C-r.
|
|
# Lines beginning with '#' are comments.
|
|
#
|
|
# First, include any systemwide bindings and variable
|
|
# assignments from /etc/Inputrc
|
|
$include /etc/Inputrc
|
|
|
|
#
|
|
# Set various bindings for emacs mode.
|
|
|
|
set editing-mode emacs
|
|
|
|
$if mode=emacs
|
|
|
|
Meta-Control-h: backward-kill-word Text after the function name is ignored
|
|
|
|
#
|
|
# Arrow keys in keypad mode
|
|
#
|
|
#"\M-OD": backward-char
|
|
#"\M-OC": forward-char
|
|
#"\M-OA": previous-history
|
|
#"\M-OB": next-history
|
|
#
|
|
# Arrow keys in ANSI mode
|
|
#
|
|
"\M-[D": backward-char
|
|
"\M-[C": forward-char
|
|
"\M-[A": previous-history
|
|
"\M-[B": next-history
|
|
#
|
|
# Arrow keys in 8 bit keypad mode
|
|
#
|
|
#"\M-\C-OD": backward-char
|
|
#"\M-\C-OC": forward-char
|
|
#"\M-\C-OA": previous-history
|
|
#"\M-\C-OB": next-history
|
|
#
|
|
# Arrow keys in 8 bit ANSI mode
|
|
#
|
|
#"\M-\C-[D": backward-char
|
|
#"\M-\C-[C": forward-char
|
|
#"\M-\C-[A": previous-history
|
|
#"\M-\C-[B": next-history
|
|
|
|
C-q: quoted-insert
|
|
|
|
$endif
|
|
|
|
# An old-style binding. This happens to be the default.
|
|
TAB: complete
|
|
|
|
# Macros that are convenient for shell interaction
|
|
$if Bash
|
|
# edit the path
|
|
"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
|
|
# prepare to type a quoted word --
|
|
# insert open and close double quotes
|
|
# and move to just after the open quote
|
|
"\C-x\"": "\"\"\C-b"
|
|
# insert a backslash (testing backslash escapes
|
|
# in sequences and macros)
|
|
"\C-x\\": "\\"
|
|
# Quote the current or previous word
|
|
"\C-xq": "\eb\"\ef\""
|
|
# Add a binding to refresh the line, which is unbound
|
|
"\C-xr": redraw-current-line
|
|
# Edit variable on current line.
|
|
"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
|
|
$endif
|
|
|
|
# use a visible bell if one is available
|
|
set bell-style visible
|
|
|
|
# don't strip characters to 7 bits when reading
|
|
set input-meta on
|
|
|
|
# allow iso-latin1 characters to be inserted rather
|
|
# than converted to prefix-meta sequences
|
|
set convert-meta off
|
|
|
|
# display characters with the eighth bit set directly
|
|
# rather than as meta-prefixed characters
|
|
set output-meta on
|
|
|
|
# if there are more than 150 possible completions for
|
|
# a word, ask the user if he wants to see all of them
|
|
set completion-query-items 150
|
|
|
|
# For FTP
|
|
$if Ftp
|
|
"\C-xg": "get \M-?"
|
|
"\C-xt": "put \M-?"
|
|
"\M-.": yank-last-arg
|
|
$endif
|
|
</pre></td></tr></table></P><P>
|
|
|
|
<A NAME="Bindable Readline Commands"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC669"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC668"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC670"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC657"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H2> 27.4 Bindable Readline Commands </H2>
|
|
<!--docid::SEC669::-->
|
|
<P>
|
|
|
|
<BLOCKQUOTE><TABLE BORDER=0 CELLSPACING=0>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC670">27.4.1 Commands For Moving</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Moving about the line.</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC671">27.4.2 Commands For Manipulating The History</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Getting at previous lines.</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC672">27.4.3 Commands For Changing Text</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Commands for changing text.</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC673">27.4.4 Killing And Yanking</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Commands for killing and yanking.</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC674">27.4.5 Specifying Numeric Arguments</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Specifying numeric arguments, repeat counts.</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC675">27.4.6 Letting Readline Type For You</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Getting Readline to do the typing for you.</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC676">27.4.7 Keyboard Macros</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Saving and re-executing typed characters</TD></TR>
|
|
<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="gdb_28.html#SEC677">27.4.8 Some Miscellaneous Commands</A></TD><TD> </TD><TD ALIGN="left" VALIGN="TOP">Other miscellaneous commands.</TD></TR>
|
|
</TABLE></BLOCKQUOTE>
|
|
<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><P>
|
|
|
|
<A NAME="Commands For Moving"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC670"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC671"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.1 Commands For Moving </H3>
|
|
<!--docid::SEC670::-->
|
|
<DL COMPACT>
|
|
<A NAME="IDX1360"></A>
|
|
<DT><CODE>beginning-of-line (C-a)</CODE>
|
|
<DD><A NAME="IDX1361"></A>
|
|
Move to the start of the current line.
|
|
<P>
|
|
|
|
<A NAME="IDX1362"></A>
|
|
<DT><CODE>end-of-line (C-e)</CODE>
|
|
<DD><A NAME="IDX1363"></A>
|
|
Move to the end of the line.
|
|
<P>
|
|
|
|
<A NAME="IDX1364"></A>
|
|
<DT><CODE>forward-char (C-f)</CODE>
|
|
<DD><A NAME="IDX1365"></A>
|
|
Move forward a character.
|
|
<P>
|
|
|
|
<A NAME="IDX1366"></A>
|
|
<DT><CODE>backward-char (C-b)</CODE>
|
|
<DD><A NAME="IDX1367"></A>
|
|
Move back a character.
|
|
<P>
|
|
|
|
<A NAME="IDX1368"></A>
|
|
<DT><CODE>forward-word (M-f)</CODE>
|
|
<DD><A NAME="IDX1369"></A>
|
|
Move forward to the end of the next word. Words are composed of
|
|
letters and digits.
|
|
<P>
|
|
|
|
<A NAME="IDX1370"></A>
|
|
<DT><CODE>backward-word (M-b)</CODE>
|
|
<DD><A NAME="IDX1371"></A>
|
|
Move back to the start of the current or previous word. Words are
|
|
composed of letters and digits.
|
|
<P>
|
|
|
|
<A NAME="IDX1372"></A>
|
|
<DT><CODE>clear-screen (C-l)</CODE>
|
|
<DD><A NAME="IDX1373"></A>
|
|
Clear the screen and redraw the current line,
|
|
leaving the current line at the top of the screen.
|
|
<P>
|
|
|
|
<A NAME="IDX1374"></A>
|
|
<DT><CODE>redraw-current-line ()</CODE>
|
|
<DD><A NAME="IDX1375"></A>
|
|
Refresh the current line. By default, this is unbound.
|
|
<P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Commands For History"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC671"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC670"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC672"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC672"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.2 Commands For Manipulating The History </H3>
|
|
<!--docid::SEC671::-->
|
|
<P>
|
|
|
|
<DL COMPACT>
|
|
<A NAME="IDX1376"></A>
|
|
<DT><CODE>accept-line (Newline or Return)</CODE>
|
|
<DD><A NAME="IDX1377"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1378"></A>
|
|
<DT><CODE>previous-history (C-p)</CODE>
|
|
<DD><A NAME="IDX1379"></A>
|
|
Move `back' through the history list, fetching the previous command.
|
|
<P>
|
|
|
|
<A NAME="IDX1380"></A>
|
|
<DT><CODE>next-history (C-n)</CODE>
|
|
<DD><A NAME="IDX1381"></A>
|
|
Move `forward' through the history list, fetching the next command.
|
|
<P>
|
|
|
|
<A NAME="IDX1382"></A>
|
|
<DT><CODE>beginning-of-history (M-<)</CODE>
|
|
<DD><A NAME="IDX1383"></A>
|
|
Move to the first line in the history.
|
|
<P>
|
|
|
|
<A NAME="IDX1384"></A>
|
|
<DT><CODE>end-of-history (M->)</CODE>
|
|
<DD><A NAME="IDX1385"></A>
|
|
Move to the end of the input history, i.e., the line currently
|
|
being entered.
|
|
<P>
|
|
|
|
<A NAME="IDX1386"></A>
|
|
<DT><CODE>reverse-search-history (C-r)</CODE>
|
|
<DD><A NAME="IDX1387"></A>
|
|
Search backward starting at the current line and moving `up' through
|
|
the history as necessary. This is an incremental search.
|
|
<P>
|
|
|
|
<A NAME="IDX1388"></A>
|
|
<DT><CODE>forward-search-history (C-s)</CODE>
|
|
<DD><A NAME="IDX1389"></A>
|
|
Search forward starting at the current line and moving `down' through
|
|
the the history as necessary. This is an incremental search.
|
|
<P>
|
|
|
|
<A NAME="IDX1390"></A>
|
|
<DT><CODE>non-incremental-reverse-search-history (M-p)</CODE>
|
|
<DD><A NAME="IDX1391"></A>
|
|
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.
|
|
<P>
|
|
|
|
<A NAME="IDX1392"></A>
|
|
<DT><CODE>non-incremental-forward-search-history (M-n)</CODE>
|
|
<DD><A NAME="IDX1393"></A>
|
|
Search forward starting at the current line and moving `down'
|
|
through the the history as necessary using a non-incremental search
|
|
for a string supplied by the user.
|
|
<P>
|
|
|
|
<A NAME="IDX1394"></A>
|
|
<DT><CODE>history-search-forward ()</CODE>
|
|
<DD><A NAME="IDX1395"></A>
|
|
Search forward through the history for the string of characters
|
|
between the start of the current line and the point.
|
|
This is a non-incremental search.
|
|
By default, this command is unbound.
|
|
<P>
|
|
|
|
<A NAME="IDX1396"></A>
|
|
<DT><CODE>history-search-backward ()</CODE>
|
|
<DD><A NAME="IDX1397"></A>
|
|
Search backward through the history for the string of characters
|
|
between the start of the current line and the point. This
|
|
is a non-incremental search. By default, this command is unbound.
|
|
<P>
|
|
|
|
<A NAME="IDX1398"></A>
|
|
<DT><CODE>yank-nth-arg (M-C-y)</CODE>
|
|
<DD><A NAME="IDX1399"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1400"></A>
|
|
<DT><CODE>yank-last-arg (M-. or M-_)</CODE>
|
|
<DD><A NAME="IDX1401"></A>
|
|
Insert last argument to the previous command (the last word of the
|
|
previous history entry). With an
|
|
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 argument of each line in turn.
|
|
The history expansion facilities are used to extract the last argument,
|
|
as if the <SAMP>`!$'</SAMP> history expansion had been specified.
|
|
<P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Commands For Text"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC672"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC671"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC673"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC673"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.3 Commands For Changing Text </H3>
|
|
<!--docid::SEC672::-->
|
|
<P>
|
|
|
|
<DL COMPACT>
|
|
<A NAME="IDX1402"></A>
|
|
<DT><CODE>delete-char (C-d)</CODE>
|
|
<DD><A NAME="IDX1403"></A>
|
|
Delete the character at point. If point is at the
|
|
beginning of the line, there are no characters in the line, and
|
|
the last character typed was not bound to <CODE>delete-char</CODE>, then
|
|
return EOF.
|
|
<P>
|
|
|
|
<A NAME="IDX1404"></A>
|
|
<DT><CODE>backward-delete-char (Rubout)</CODE>
|
|
<DD><A NAME="IDX1405"></A>
|
|
Delete the character behind the cursor. A numeric argument means
|
|
to kill the characters instead of deleting them.
|
|
<P>
|
|
|
|
<A NAME="IDX1406"></A>
|
|
<DT><CODE>forward-backward-delete-char ()</CODE>
|
|
<DD><A NAME="IDX1407"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1408"></A>
|
|
<DT><CODE>quoted-insert (C-q or C-v)</CODE>
|
|
<DD><A NAME="IDX1409"></A>
|
|
Add the next character typed to the line verbatim. This is
|
|
how to insert key sequences like <KBD>C-q</KBD>, for example.
|
|
<P>
|
|
|
|
<A NAME="IDX1410"></A>
|
|
<DT><CODE>tab-insert (M-<KBD>TAB</KBD>)</CODE>
|
|
<DD><A NAME="IDX1411"></A>
|
|
Insert a tab character.
|
|
<P>
|
|
|
|
<A NAME="IDX1412"></A>
|
|
<DT><CODE>self-insert (a, b, A, 1, !, <small>...</small>)</CODE>
|
|
<DD><A NAME="IDX1413"></A>
|
|
Insert yourself.
|
|
<P>
|
|
|
|
<A NAME="IDX1414"></A>
|
|
<DT><CODE>transpose-chars (C-t)</CODE>
|
|
<DD><A NAME="IDX1415"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1416"></A>
|
|
<DT><CODE>transpose-words (M-t)</CODE>
|
|
<DD><A NAME="IDX1417"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1418"></A>
|
|
<DT><CODE>upcase-word (M-u)</CODE>
|
|
<DD><A NAME="IDX1419"></A>
|
|
Uppercase the current (or following) word. With a negative argument,
|
|
uppercase the previous word, but do not move the cursor.
|
|
<P>
|
|
|
|
<A NAME="IDX1420"></A>
|
|
<DT><CODE>downcase-word (M-l)</CODE>
|
|
<DD><A NAME="IDX1421"></A>
|
|
Lowercase the current (or following) word. With a negative argument,
|
|
lowercase the previous word, but do not move the cursor.
|
|
<P>
|
|
|
|
<A NAME="IDX1422"></A>
|
|
<DT><CODE>capitalize-word (M-c)</CODE>
|
|
<DD><A NAME="IDX1423"></A>
|
|
Capitalize the current (or following) word. With a negative argument,
|
|
capitalize the previous word, but do not move the cursor.
|
|
<P>
|
|
|
|
<A NAME="IDX1424"></A>
|
|
<DT><CODE>overwrite-mode ()</CODE>
|
|
<DD><A NAME="IDX1425"></A>
|
|
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>
|
|
|
|
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><P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Commands For Killing"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC673"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC672"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC674"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC674"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.4 Killing And Yanking </H3>
|
|
<!--docid::SEC673::-->
|
|
<P>
|
|
|
|
<DL COMPACT>
|
|
|
|
<A NAME="IDX1426"></A>
|
|
<DT><CODE>kill-line (C-k)</CODE>
|
|
<DD><A NAME="IDX1427"></A>
|
|
Kill the text from point to the end of the line.
|
|
<P>
|
|
|
|
<A NAME="IDX1428"></A>
|
|
<DT><CODE>backward-kill-line (C-x Rubout)</CODE>
|
|
<DD><A NAME="IDX1429"></A>
|
|
Kill backward to the beginning of the line.
|
|
<P>
|
|
|
|
<A NAME="IDX1430"></A>
|
|
<DT><CODE>unix-line-discard (C-u)</CODE>
|
|
<DD><A NAME="IDX1431"></A>
|
|
Kill backward from the cursor to the beginning of the current line.
|
|
<P>
|
|
|
|
<A NAME="IDX1432"></A>
|
|
<DT><CODE>kill-whole-line ()</CODE>
|
|
<DD><A NAME="IDX1433"></A>
|
|
Kill all characters on the current line, no matter where point is.
|
|
By default, this is unbound.
|
|
<P>
|
|
|
|
<A NAME="IDX1434"></A>
|
|
<DT><CODE>kill-word (M-d)</CODE>
|
|
<DD><A NAME="IDX1435"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1436"></A>
|
|
<DT><CODE>backward-kill-word (M-<KBD>DEL</KBD>)</CODE>
|
|
<DD><A NAME="IDX1437"></A>
|
|
Kill the word behind point.
|
|
Word boundaries are the same as <CODE>backward-word</CODE>.
|
|
<P>
|
|
|
|
<A NAME="IDX1438"></A>
|
|
<DT><CODE>unix-word-rubout (C-w)</CODE>
|
|
<DD><A NAME="IDX1439"></A>
|
|
Kill the word behind point, using white space as a word boundary.
|
|
The killed text is saved on the kill-ring.
|
|
<P>
|
|
|
|
<A NAME="IDX1440"></A>
|
|
<DT><CODE>unix-filename-rubout ()</CODE>
|
|
<DD><A NAME="IDX1441"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1442"></A>
|
|
<DT><CODE>delete-horizontal-space ()</CODE>
|
|
<DD><A NAME="IDX1443"></A>
|
|
Delete all spaces and tabs around point. By default, this is unbound.
|
|
<P>
|
|
|
|
<A NAME="IDX1444"></A>
|
|
<DT><CODE>kill-region ()</CODE>
|
|
<DD><A NAME="IDX1445"></A>
|
|
Kill the text in the current region.
|
|
By default, this command is unbound.
|
|
<P>
|
|
|
|
<A NAME="IDX1446"></A>
|
|
<DT><CODE>copy-region-as-kill ()</CODE>
|
|
<DD><A NAME="IDX1447"></A>
|
|
Copy the text in the region to the kill buffer, so it can be yanked
|
|
right away. By default, this command is unbound.
|
|
<P>
|
|
|
|
<A NAME="IDX1448"></A>
|
|
<DT><CODE>copy-backward-word ()</CODE>
|
|
<DD><A NAME="IDX1449"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1450"></A>
|
|
<DT><CODE>copy-forward-word ()</CODE>
|
|
<DD><A NAME="IDX1451"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1452"></A>
|
|
<DT><CODE>yank (C-y)</CODE>
|
|
<DD><A NAME="IDX1453"></A>
|
|
Yank the top of the kill ring into the buffer at point.
|
|
<P>
|
|
|
|
<A NAME="IDX1454"></A>
|
|
<DT><CODE>yank-pop (M-y)</CODE>
|
|
<DD><A NAME="IDX1455"></A>
|
|
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>.
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Numeric Arguments"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC674"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC673"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC675"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC675"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.5 Specifying Numeric Arguments </H3>
|
|
<!--docid::SEC674::-->
|
|
<DL COMPACT>
|
|
|
|
<A NAME="IDX1456"></A>
|
|
<DT><CODE>digit-argument (<KBD>M-0</KBD>, <KBD>M-1</KBD>, <small>...</small> <KBD>M--</KBD>)</CODE>
|
|
<DD><A NAME="IDX1457"></A>
|
|
Add this digit to the argument already accumulating, or start a new
|
|
argument. <KBD>M--</KBD> starts a negative argument.
|
|
<P>
|
|
|
|
<A NAME="IDX1458"></A>
|
|
<DT><CODE>universal-argument ()</CODE>
|
|
<DD><A NAME="IDX1459"></A>
|
|
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 or minus sign, the argument count
|
|
for the next command is multiplied by four.
|
|
The argument count is initially one, so executing this function the
|
|
first time makes the argument count four, a second time makes the
|
|
argument count sixteen, and so on.
|
|
By default, this is not bound to a key.
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Commands For Completion"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC675"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC674"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC676"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC676"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.6 Letting Readline Type For You </H3>
|
|
<!--docid::SEC675::-->
|
|
<P>
|
|
|
|
<DL COMPACT>
|
|
<A NAME="IDX1460"></A>
|
|
<DT><CODE>complete (<KBD>TAB</KBD>)</CODE>
|
|
<DD><A NAME="IDX1461"></A>
|
|
Attempt to perform completion on the text before point.
|
|
The actual completion performed is application-specific.
|
|
The default is filename completion.
|
|
<P>
|
|
|
|
<A NAME="IDX1462"></A>
|
|
<DT><CODE>possible-completions (M-?)</CODE>
|
|
<DD><A NAME="IDX1463"></A>
|
|
List the possible completions of the text before point.
|
|
<P>
|
|
|
|
<A NAME="IDX1464"></A>
|
|
<DT><CODE>insert-completions (M-*)</CODE>
|
|
<DD><A NAME="IDX1465"></A>
|
|
Insert all completions of the text before point that would have
|
|
been generated by <CODE>possible-completions</CODE>.
|
|
<P>
|
|
|
|
<A NAME="IDX1466"></A>
|
|
<DT><CODE>menu-complete ()</CODE>
|
|
<DD><A NAME="IDX1467"></A>
|
|
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 <KBD>TAB</KBD>, but is unbound
|
|
by default.
|
|
<P>
|
|
|
|
<A NAME="IDX1468"></A>
|
|
<DT><CODE>delete-char-or-list ()</CODE>
|
|
<DD><A NAME="IDX1469"></A>
|
|
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>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Keyboard Macros"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC676"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC675"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC677"> > </A>]</TD>
|
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|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.7 Keyboard Macros </H3>
|
|
<!--docid::SEC676::-->
|
|
<DL COMPACT>
|
|
|
|
<A NAME="IDX1470"></A>
|
|
<DT><CODE>start-kbd-macro (C-x ()</CODE>
|
|
<DD><A NAME="IDX1471"></A>
|
|
Begin saving the characters typed into the current keyboard macro.
|
|
<P>
|
|
|
|
<A NAME="IDX1472"></A>
|
|
<DT><CODE>end-kbd-macro (C-x ))</CODE>
|
|
<DD><A NAME="IDX1473"></A>
|
|
Stop saving the characters typed into the current keyboard macro
|
|
and save the definition.
|
|
<P>
|
|
|
|
<A NAME="IDX1474"></A>
|
|
<DT><CODE>call-last-kbd-macro (C-x e)</CODE>
|
|
<DD><A NAME="IDX1475"></A>
|
|
Re-execute the last keyboard macro defined, by making the characters
|
|
in the macro appear as if typed at the keyboard.
|
|
<P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Miscellaneous Commands"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC677"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC676"> < </A>]</TD>
|
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> > </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> << </A>]</TD>
|
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC669"> Up </A>]</TD>
|
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<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC678"> >> </A>]</TD>
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<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H3> 27.4.8 Some Miscellaneous Commands </H3>
|
|
<!--docid::SEC677::-->
|
|
<DL COMPACT>
|
|
|
|
<A NAME="IDX1476"></A>
|
|
<DT><CODE>re-read-init-file (C-x C-r)</CODE>
|
|
<DD><A NAME="IDX1477"></A>
|
|
Read in the contents of the <VAR>inputrc</VAR> file, and incorporate
|
|
any bindings or variable assignments found there.
|
|
<P>
|
|
|
|
<A NAME="IDX1478"></A>
|
|
<DT><CODE>abort (C-g)</CODE>
|
|
<DD><A NAME="IDX1479"></A>
|
|
Abort the current editing command and
|
|
ring the terminal's bell (subject to the setting of
|
|
<CODE>bell-style</CODE>).
|
|
<P>
|
|
|
|
<A NAME="IDX1480"></A>
|
|
<DT><CODE>do-uppercase-version (M-a, M-b, M-<VAR>x</VAR>, <small>...</small>)</CODE>
|
|
<DD><A NAME="IDX1481"></A>
|
|
If the metafied character <VAR>x</VAR> is lowercase, run the command
|
|
that is bound to the corresponding uppercase character.
|
|
<P>
|
|
|
|
<A NAME="IDX1482"></A>
|
|
<DT><CODE>prefix-meta (<KBD>ESC</KBD>)</CODE>
|
|
<DD><A NAME="IDX1483"></A>
|
|
Metafy the next character typed. This is for keyboards
|
|
without a meta key. Typing <SAMP>`<KBD>ESC</KBD> f'</SAMP> is equivalent to typing
|
|
<KBD>M-f</KBD>.
|
|
<P>
|
|
|
|
<A NAME="IDX1484"></A>
|
|
<DT><CODE>undo (C-_ or C-x C-u)</CODE>
|
|
<DD><A NAME="IDX1485"></A>
|
|
Incremental undo, separately remembered for each line.
|
|
<P>
|
|
|
|
<A NAME="IDX1486"></A>
|
|
<DT><CODE>revert-line (M-r)</CODE>
|
|
<DD><A NAME="IDX1487"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1488"></A>
|
|
<DT><CODE>tilde-expand (M-~)</CODE>
|
|
<DD><A NAME="IDX1489"></A>
|
|
Perform tilde expansion on the current word.
|
|
<P>
|
|
|
|
<A NAME="IDX1490"></A>
|
|
<DT><CODE>set-mark (C-@)</CODE>
|
|
<DD><A NAME="IDX1491"></A>
|
|
Set the mark to the point. If a
|
|
numeric argument is supplied, the mark is set to that position.
|
|
<P>
|
|
|
|
<A NAME="IDX1492"></A>
|
|
<DT><CODE>exchange-point-and-mark (C-x C-x)</CODE>
|
|
<DD><A NAME="IDX1493"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1494"></A>
|
|
<DT><CODE>character-search (C-])</CODE>
|
|
<DD><A NAME="IDX1495"></A>
|
|
A character is read and point is moved to the next occurrence of that
|
|
character. A negative count searches for previous occurrences.
|
|
<P>
|
|
|
|
<A NAME="IDX1496"></A>
|
|
<DT><CODE>character-search-backward (M-C-])</CODE>
|
|
<DD><A NAME="IDX1497"></A>
|
|
A character is read and point is moved to the previous occurrence
|
|
of that character. A negative count searches for subsequent
|
|
occurrences.
|
|
<P>
|
|
|
|
<A NAME="IDX1498"></A>
|
|
<DT><CODE>insert-comment (M-#)</CODE>
|
|
<DD><A NAME="IDX1499"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1500"></A>
|
|
<DT><CODE>dump-functions ()</CODE>
|
|
<DD><A NAME="IDX1501"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1502"></A>
|
|
<DT><CODE>dump-variables ()</CODE>
|
|
<DD><A NAME="IDX1503"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1504"></A>
|
|
<DT><CODE>dump-macros ()</CODE>
|
|
<DD><A NAME="IDX1505"></A>
|
|
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>
|
|
|
|
<A NAME="IDX1506"></A>
|
|
<DT><CODE>emacs-editing-mode (C-e)</CODE>
|
|
<DD><A NAME="IDX1507"></A>
|
|
When in <CODE>vi</CODE> command mode, this causes a switch to <CODE>emacs</CODE>
|
|
editing mode.
|
|
<P>
|
|
|
|
<A NAME="IDX1508"></A>
|
|
<DT><CODE>vi-editing-mode (M-C-j)</CODE>
|
|
<DD><A NAME="IDX1509"></A>
|
|
When in <CODE>emacs</CODE> editing mode, this causes a switch to <CODE>vi</CODE>
|
|
editing mode.
|
|
<P>
|
|
|
|
</DL>
|
|
<P>
|
|
|
|
<A NAME="Readline vi Mode"></A>
|
|
<HR SIZE="6">
|
|
<A NAME="SEC678"></A>
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC677"> < </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_29.html#SEC679"> > </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC657"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC657"> Up </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_29.html#SEC679"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<H2> 27.5 Readline vi Mode </H2>
|
|
<!--docid::SEC678::-->
|
|
<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 POSIX 1003.2 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 <KBD>ESC</KBD>
|
|
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><P>
|
|
|
|
<A NAME="Using History Interactively"></A>
|
|
<HR SIZE="6">
|
|
<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
|
|
<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_28.html#SEC657"> << </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_29.html#SEC679"> >> </A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT"> <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb.html#SEC_Top">Top</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_toc.html#SEC_Contents">Contents</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_38.html#SEC764">Index</A>]</TD>
|
|
<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="gdb_abt.html#SEC_About"> ? </A>]</TD>
|
|
</TR></TABLE>
|
|
<BR>
|
|
<FONT SIZE="-1">
|
|
|
|
<address>
|
|
|
|
<p>Please send FSF & GNU inquiries & questions to <a
|
|
href="mailto:gnu@gnu.org">gnu@gnu.org</a>. There are also <a
|
|
href="http://www.gnu.org/home.html#ContactInfo">other ways to
|
|
contact</a> the FSF.</p>
|
|
|
|
<p>These pages are maintained by <a
|
|
href="http://www.gnu.org/software/gdb/">the GDB developers</a>.</p>
|
|
|
|
<p>Copyright Free Software Foundation, Inc., 59 Temple Place - Suite
|
|
330, Boston, MA 02111, USA.</p>
|
|
|
|
<p>Verbatim copying and distribution of this entire article is
|
|
permitted in any medium, provided this notice is preserved.</p>
|
|
|
|
</address>
|
|
|
|
This document was generated
|
|
by <I>GDB Administrator</I> on <I>March, 27 2008</I>
|
|
using <A HREF="http://www.mathematik.uni-kl.de/~obachman/Texi2html
|
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"><I>texi2html</I></A>
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