mingw/info/gdb/Readline-Bare-Essentials.html

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  12 Node:<a name="Readline%20Bare%20Essentials">Readline Bare Essentials</a>,
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  18 <h4 class="subsection">Readline Bare Essentials</h4>
  19
  20    <p>In order to enter characters into the line, simply type them.  The typed
  21 character appears where the cursor was, and then the cursor moves one
  22 space to the right.  If you mistype a character, you can use your
  23 erase character to back up and delete the mistyped character.
  24
  25    <p>Sometimes you may mistype a character, and
  26 not notice the error until you have typed several other characters.  In
  27 that case, you can type <kbd>C-b</kbd> to move the cursor to the left, and then
  28 correct your mistake.  Afterwards, you can move the cursor to the right
  29 with <kbd>C-f</kbd>.
  30
  31    <p>When you add text in the middle of a line, you will notice that characters
  32 to the right of the cursor are `pushed over' to make room for the text
  33 that you have inserted.  Likewise, when you delete text behind the cursor,
  34 characters to the right of the cursor are `pulled back' to fill in the
  35 blank space created by the removal of the text.  A list of the bare
  36 essentials for editing the text of an input line follows.
  37
  38      <dl>
  39 <dt><kbd>C-b</kbd>
  40      <dd>Move back one character.
  41 <br><dt><kbd>C-f</kbd>
  42      <dd>Move forward one character.
  43 <br><dt>&lt;DEL&gt; or &lt;Backspace&gt;
  44      <dd>Delete the character to the left of the cursor.
  45 <br><dt><kbd>C-d</kbd>
  46      <dd>Delete the character underneath the cursor.
  47 <br><dt>Printing&nbsp;characters
  48      <dd>Insert the character into the line at the cursor.
  49 <br><dt><kbd>C-_</kbd> or <kbd>C-x C-u</kbd>
  50      <dd>Undo the last editing command.  You can undo all the way back to an
  51 empty line.
  52 </dl>
  53
  54 <p>(Depending on your configuration, the &lt;Backspace&gt; key be set to
  55 delete the character to the left of the cursor and the &lt;DEL&gt; key set
  56 to delete the character underneath the cursor, like <kbd>C-d</kbd>, rather
  57 than the character to the left of the cursor.)
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