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<h2><a name="echo">DefaultExcludes</a></h2>

<p><em>since Ant 1.6</em></p>

<h3>Description</h3>
<p>Alters the default excludes for all subsequent processing in the
build, and prints out the current default excludes if desired.

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">echo</td>
    <td valign="top">whether or not to print out the default excludes.(defaults to false)</td>
    <td valign="top" align="center">attribute "true" required if no
                                    other attribute specified</td>
  </tr>
  <tr>
    <td valign="top">default</td>
    <td valign="top">go back to hard wired default excludes</td>
    <td valign="top" align="center">attribute "true" required if no
    if no other attribute is specified</td>
  </tr>
  <tr>
    <td valign="top">add</td>
    <td valign="top">the pattern to add to the default excludes</td>
    <td valign="top" align="center">if no other attribute is specified</td>
  </tr>
  <tr>
    <td valign="top">remove</td>
    <td valign="top">remove the specified pattern from the default excludes</td>
    <td valign="top" align="center">if no other attribute is specified</td>
  </tr>
</table>

<h3>Examples</h3>

<p>Print out the default excludes</p>

<pre>  &lt;defaultexcludes echo=&quot;true&quot;/&gt;</pre>

<p>Print out the default excludes and exclude all *.bak files in
<strong>all</strong> further processing</p>

<pre>  &lt;defaultexcludes echo=&quot;true&quot; add=&quot;**/*.bak&quot;/&gt;</pre>

<p>Silently allow several fileset based tasks to operate on emacs
backup files and then restore normal behavior</p>

<pre>
  &lt;defaultexcludes remove=&quot;**/*~&quot;/&gt;

  (do several fileset based tasks here)

  &lt;defaultexcludes default=&quot;true&quot;/&gt;
</pre>

<h3>Notes</h3>
By default the pattern <tt>**/.svn</tt> and <tt>**/.svn/**</tt> are set as default 
excludes. With version 1.3 Subversion supports the 
<a target="_blank" href="http://subversion.tigris.org/svn_1.3_releasenotes.html">&quot;_svn hack&quot;</a>.
That means, that the svn-libraries evaluate environment variables and use <i>.svn</i> 
or <i>_svn</i> directory regarding to that value. We had chosen not to evaluate environment variables to
get a more reliable build. Instead you have to change the settings by yourself by changing
the exclude patterns:
<pre>
  &lt;defaultexcludes remove=&quot;**/.svn&quot;/&gt;
  &lt;defaultexcludes remove=&quot;**/.svn/**&quot;/&gt;
  &lt;defaultexcludes add=&quot;**/_svn&quot;/&gt;
  &lt;defaultexcludes add=&quot;**/_svn/**&quot;/&gt;
</pre>


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