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  • Committer: Bazaar Package Importer
  • Author(s): Camm Maguire
  • Date: 2006-12-04 10:35:42 UTC
  • mfrom: (1.1.5 upstream) (3.1.1 etch)
  • Revision ID: james.westby@ubuntu.com-20061204103542-68nf4pkilci0018n
Tags: 3.1-1
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doc/HTML/UBU_bang_.html
 
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<html>
 
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<head><title>UBU_bang_.html  --  ACL2 Version 3.1</title></head>
 
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<body text=#000000 bgcolor="#FFFFFF">
 
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<h2>UBU!</h2>undo <a href="COMMAND.html">command</a>s, without a query or an error
 
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<pre>Major Section:  <a href="HISTORY.html">HISTORY</a>
 
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</pre><p>
 
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<pre>
 
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Example:
 
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:ubu! :x-4
 
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</pre>
 
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<p>
 
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The keyword <a href="COMMAND.html">command</a> <code>:ubu!</code> is the same as <code>:</code><code><a href="UBU.html">ubu</a></code>, but with
 
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related queries suppressed appropriately, and with a guarantee that it is
 
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``error-free.''  More precisely, the error triple returned by <code>:ubu!</code>  will
 
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always have a first component of <code>nil</code>.  <code>:</code><code><a href="OOPS.html">Oops</a></code> will undo the last
 
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<code>:ubu!</code>.  Also see <a href="UBU.html">ubu</a>, see <a href="UBT.html">ubt</a>, and see <a href="U.html">u</a>.
 
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<br><br><br><a href="acl2-doc.html"><img src="llogo.gif"></a> <a href="acl2-doc-index.html"><img src="index.gif"></a>
 
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</body>
 
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</html>