bug in parsing file ... comments

[Brian Withnell]

We ran into a parsing bug that prevents commenting out an option with a
command line for maven. We tried commenting out (for testing purposes) the
following plugin, which contains the "thrift --gen" command. The "--gen"
caused a parse error in the file (looks like it thinks it needs to have -->
because it is in a comment rather than --> as the only thing that matters.
It would be *great* if it allowed nesting of comments, but I'll take that
it just doesn't barf on valid command structures. Because the following is
a comment, you *should* be able to paste it into any pom file and have
maven process the file properly.

      <!--  plugin>

        <artifactId>maven-compiler-plugin</artifactId>

        <version>3.1</version>

        <configuration>

          <source>1.6</source>

          <target>1.6</target>

        </configuration>

      </plugin -->

      <!-- plugin>

        <artifactId>maven-antrun-plugin</artifactId>

        <executions>

          <execution>

            <id>generate-sources</id>

            <phase>generate-sources</phase>

            <configuration>

              <tasks>

                <mkdir dir="target/generated-sources/" />

                <apply executable="/usr/local/bin/thrift" parallel="false">

the line below in a comment causes problems:

                  <arg value="--gen" />

                  <arg value="java" />

                  <arg value="-out" />

                  <arg value="target/generated-sources/" />

                  <fileset dir="src/">

                    <include name="*.thrift" />

                  </fileset>

                </apply>

              </tasks>

            </configuration>

            <goals>

              <goal>run</goal>

            </goals>

          </execution>

        </executions>

      </plugin -->