Add FAQ contributed by Henri Gomez <hgomez at apache.org>

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@273343 13f79535-47bb-0310-9956-ffa450edef68

docs/faq.html

@@ -225,6 +225,12 @@
                     <li><a href="#encoding">
   How can I include national characters like German
         umlauts in my build file?
+  </a></li>
+                    <li><a href="#properties-not-trimmed">
+  <code>ant</code> failed to build my program via javac
+      even when I put the needed jars in an external
+      <code>build.properties</code> file and reference them by
+      <code>pathelement</code> or <code>classpath refid</code>.
   </a></li>
                 </ul>
       </blockquote>
@@ -1329,6 +1335,31 @@ shell-prompt&gt; cat &lt; foo
                         </blockquote>
     </td></tr>
   </table>
+  </a>
+        <a name="properties-not-trimmed">
+  <table border="0" cellspacing="0" cellpadding="2" width="100%">
+    <tr><td bgcolor="#828DA6">
+      <font color="#ffffff" face="arial,helvetica,sanserif">
+        <strong>
+          <code>ant</code> failed to build my program via javac
+      even when I put the needed jars in an external
+      <code>build.properties</code> file and reference them by
+      <code>pathelement</code> or <code>classpath refid</code>.
+        </strong>
+      </font>
+    </td></tr>
+    <tr><td>
+      <blockquote>
+                              <p>When <code>ant</code> loads properties from an external
+        file it dosn't touch the value of properties, trailing blanks
+        will not be trimmed for example.</p>
+                                        <p>If the value represents a file path, like a jar needed to
+        compile, the task which requires the value, javac for example
+        would fail to compile since it can't find the file due to
+        trailing spaces.</p>
+                        </blockquote>
+    </td></tr>
+  </table>
   </a>
                         <a name="integration">
   <table border="0" cellspacing="0" cellpadding="2" width="100%">

xdocs/faq.xml

@@ -594,6 +594,25 @@ shell-prompt> cat < foo
 ]]></source>
       </answer>
     </faq>
+
+    <faq id="properties-not-trimmed">
+      <question><code>ant</code> failed to build my program via javac
+      even when I put the needed jars in an external
+      <code>build.properties</code> file and reference them by
+      <code>pathelement</code> or <code>classpath refid</code>.</question>
+
+      <answer>
+
+        <p>When <code>ant</code> loads properties from an external
+        file it dosn't touch the value of properties, trailing blanks
+        will not be trimmed for example.</p>
+
+        <p>If the value represents a file path, like a jar needed to
+        compile, the task which requires the value, javac for example
+        would fail to compile since it can't find the file due to
+        trailing spaces.</p>
+      </answer>
+    </faq>
   </faqsection>
 
   <faqsection title="Ant and IDEs/Editors">